/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:05:01,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:05:01,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:05:02,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:05:02,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:05:02,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:05:02,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:05:02,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:05:02,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:05:02,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:05:02,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:05:02,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:05:02,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:05:02,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:05:02,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:05:02,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:05:02,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:05:02,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:05:02,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:05:02,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:05:02,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:05:02,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:05:02,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:05:02,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:05:02,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:05:02,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:05:02,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:05:02,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:05:02,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:05:02,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:05:02,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:05:02,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:05:02,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:05:02,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:05:02,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:05:02,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:05:02,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:05:02,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:05:02,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:05:02,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:05:02,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:05:02,111 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:05:02,152 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:05:02,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:05:02,152 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:05:02,153 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:05:02,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:05:02,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:05:02,154 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:05:02,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:05:02,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:05:02,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:05:02,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:05:02,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:05:02,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:05:02,155 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:05:02,155 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:05:02,155 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:05:02,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:05:02,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:05:02,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:05:02,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:05:02,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:05:02,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:05:02,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:05:02,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:05:02,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:05:02,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:05:02,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:05:02,163 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:05:02,164 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:05:02,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:05:02,164 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:05:02,164 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:05:02,165 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:05:02,165 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:05:02,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:05:02,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:05:02,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:05:02,473 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:05:02,474 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:05:02,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c [2022-01-10 12:05:02,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b85b302f3/b8fefd5f7d6e4080ace22f7ed8d605c4/FLAG63575a8bd [2022-01-10 12:05:03,101 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:05:03,102 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c [2022-01-10 12:05:03,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b85b302f3/b8fefd5f7d6e4080ace22f7ed8d605c4/FLAG63575a8bd [2022-01-10 12:05:03,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b85b302f3/b8fefd5f7d6e4080ace22f7ed8d605c4 [2022-01-10 12:05:03,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:05:03,507 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:05:03,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:05:03,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:05:03,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:05:03,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:05:03" (1/1) ... [2022-01-10 12:05:03,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b63c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:03, skipping insertion in model container [2022-01-10 12:05:03,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:05:03" (1/1) ... [2022-01-10 12:05:03,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:05:03,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:05:04,086 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c[63597,63610] [2022-01-10 12:05:04,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:05:04,131 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:05:04,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:05:04,234 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c[63597,63610] [2022-01-10 12:05:04,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:05:04,272 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:05:04,369 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c[63597,63610] [2022-01-10 12:05:04,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:05:04,406 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:05:04,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:04 WrapperNode [2022-01-10 12:05:04,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:05:04,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:05:04,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:05:04,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:05:04,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:04" (1/1) ... [2022-01-10 12:05:04,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:04" (1/1) ... [2022-01-10 12:05:04,660 INFO L137 Inliner]: procedures = 99, calls = 349, calls flagged for inlining = 201, calls inlined = 604, statements flattened = 18167 [2022-01-10 12:05:04,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:05:04,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:05:04,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:05:04,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:05:04,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:04" (1/1) ... [2022-01-10 12:05:04,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:04" (1/1) ... [2022-01-10 12:05:04,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:04" (1/1) ... [2022-01-10 12:05:04,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:04" (1/1) ... [2022-01-10 12:05:04,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:04" (1/1) ... [2022-01-10 12:05:04,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:04" (1/1) ... [2022-01-10 12:05:05,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:04" (1/1) ... [2022-01-10 12:05:05,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:05:05,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:05:05,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:05:05,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:05:05,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:04" (1/1) ... [2022-01-10 12:05:05,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:05:05,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:05:05,100 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 12:05:05,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 12:05:05,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:05:05,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:05:05,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:05:05,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:05:05,430 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:05:05,432 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:05:12,552 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:05:12,594 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:05:12,594 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:05:12,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:05:12 BoogieIcfgContainer [2022-01-10 12:05:12,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:05:12,601 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:05:12,601 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:05:12,602 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:05:12,605 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:05:12" (1/1) ... [2022-01-10 12:05:13,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:05:13 BasicIcfg [2022-01-10 12:05:13,837 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:05:13,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:05:13,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:05:13,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:05:13,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:05:03" (1/4) ... [2022-01-10 12:05:13,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251831f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:05:13, skipping insertion in model container [2022-01-10 12:05:13,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:04" (2/4) ... [2022-01-10 12:05:13,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251831f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:05:13, skipping insertion in model container [2022-01-10 12:05:13,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:05:12" (3/4) ... [2022-01-10 12:05:13,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251831f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:05:13, skipping insertion in model container [2022-01-10 12:05:13,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:05:13" (4/4) ... [2022-01-10 12:05:13,843 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product28.cil.cTransformedIcfg [2022-01-10 12:05:13,847 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:05:13,848 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 12:05:13,906 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:05:13,913 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 12:05:13,913 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 12:05:14,000 INFO L276 IsEmpty]: Start isEmpty. Operand has 5097 states, 5091 states have (on average 1.864073855824003) internal successors, (9490), 5096 states have internal predecessors, (9490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:14,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 12:05:14,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:14,020 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] [2022-01-10 12:05:14,021 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:14,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:14,025 INFO L85 PathProgramCache]: Analyzing trace with hash -868761367, now seen corresponding path program 1 times [2022-01-10 12:05:14,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:14,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337646524] [2022-01-10 12:05:14,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:14,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:14,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:14,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:14,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337646524] [2022-01-10 12:05:14,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337646524] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:14,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:14,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:05:14,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029047554] [2022-01-10 12:05:14,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:14,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:05:14,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:14,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:05:14,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:14,421 INFO L87 Difference]: Start difference. First operand has 5097 states, 5091 states have (on average 1.864073855824003) internal successors, (9490), 5096 states have internal predecessors, (9490), 0 states have call successors, (0), 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 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:15,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:15,004 INFO L93 Difference]: Finished difference Result 15196 states and 28310 transitions. [2022-01-10 12:05:15,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:05:15,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-01-10 12:05:15,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:15,080 INFO L225 Difference]: With dead ends: 15196 [2022-01-10 12:05:15,080 INFO L226 Difference]: Without dead ends: 10101 [2022-01-10 12:05:15,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:15,103 INFO L933 BasicCegarLoop]: 18815 mSDtfsCounter, 9451 mSDsluCounter, 9357 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9451 SdHoareTripleChecker+Valid, 28172 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:15,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9451 Valid, 28172 Invalid, 24 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:15,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10101 states. [2022-01-10 12:05:15,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10101 to 5086. [2022-01-10 12:05:15,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5086 states, 5081 states have (on average 1.8630190907301711) internal successors, (9466), 5085 states have internal predecessors, (9466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:15,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5086 states to 5086 states and 9466 transitions. [2022-01-10 12:05:15,370 INFO L78 Accepts]: Start accepts. Automaton has 5086 states and 9466 transitions. Word has length 46 [2022-01-10 12:05:15,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:15,371 INFO L470 AbstractCegarLoop]: Abstraction has 5086 states and 9466 transitions. [2022-01-10 12:05:15,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:15,371 INFO L276 IsEmpty]: Start isEmpty. Operand 5086 states and 9466 transitions. [2022-01-10 12:05:15,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 12:05:15,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:15,375 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] [2022-01-10 12:05:15,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:05:15,376 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:15,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:15,378 INFO L85 PathProgramCache]: Analyzing trace with hash 166297039, now seen corresponding path program 1 times [2022-01-10 12:05:15,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:15,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255832299] [2022-01-10 12:05:15,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:15,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:15,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:15,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255832299] [2022-01-10 12:05:15,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255832299] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:15,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:15,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:05:15,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251420383] [2022-01-10 12:05:15,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:15,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:05:15,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:15,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:05:15,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:15,595 INFO L87 Difference]: Start difference. First operand 5086 states and 9466 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:16,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:16,073 INFO L93 Difference]: Finished difference Result 15101 states and 28118 transitions. [2022-01-10 12:05:16,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:05:16,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-10 12:05:16,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:16,121 INFO L225 Difference]: With dead ends: 15101 [2022-01-10 12:05:16,122 INFO L226 Difference]: Without dead ends: 10065 [2022-01-10 12:05:16,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:16,138 INFO L933 BasicCegarLoop]: 18678 mSDtfsCounter, 9353 mSDsluCounter, 9297 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9353 SdHoareTripleChecker+Valid, 27975 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:16,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9353 Valid, 27975 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:05:16,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10065 states. [2022-01-10 12:05:16,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10065 to 5086. [2022-01-10 12:05:16,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5086 states, 5081 states have (on average 1.8580987994489273) internal successors, (9441), 5085 states have internal predecessors, (9441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5086 states to 5086 states and 9441 transitions. [2022-01-10 12:05:16,325 INFO L78 Accepts]: Start accepts. Automaton has 5086 states and 9441 transitions. Word has length 53 [2022-01-10 12:05:16,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:16,326 INFO L470 AbstractCegarLoop]: Abstraction has 5086 states and 9441 transitions. [2022-01-10 12:05:16,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:16,326 INFO L276 IsEmpty]: Start isEmpty. Operand 5086 states and 9441 transitions. [2022-01-10 12:05:16,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 12:05:16,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:16,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:05:16,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:05:16,329 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:16,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:16,330 INFO L85 PathProgramCache]: Analyzing trace with hash 693565464, now seen corresponding path program 1 times [2022-01-10 12:05:16,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:16,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775971096] [2022-01-10 12:05:16,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:16,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:16,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:16,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:16,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775971096] [2022-01-10 12:05:16,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775971096] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:16,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:16,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:05:16,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258043920] [2022-01-10 12:05:16,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:16,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:05:16,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:16,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:05:16,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:16,395 INFO L87 Difference]: Start difference. First operand 5086 states and 9441 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:16,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:16,587 INFO L93 Difference]: Finished difference Result 10101 states and 18784 transitions. [2022-01-10 12:05:16,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:05:16,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 12:05:16,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:16,608 INFO L225 Difference]: With dead ends: 10101 [2022-01-10 12:05:16,609 INFO L226 Difference]: Without dead ends: 5086 [2022-01-10 12:05:16,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:16,619 INFO L933 BasicCegarLoop]: 9422 mSDtfsCounter, 9430 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9430 SdHoareTripleChecker+Valid, 9429 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:16,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9430 Valid, 9429 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:16,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5086 states. [2022-01-10 12:05:16,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5086 to 5086. [2022-01-10 12:05:16,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5086 states, 5081 states have (on average 1.8577051761464278) internal successors, (9439), 5085 states have internal predecessors, (9439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:16,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5086 states to 5086 states and 9439 transitions. [2022-01-10 12:05:16,759 INFO L78 Accepts]: Start accepts. Automaton has 5086 states and 9439 transitions. Word has length 56 [2022-01-10 12:05:16,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:16,759 INFO L470 AbstractCegarLoop]: Abstraction has 5086 states and 9439 transitions. [2022-01-10 12:05:16,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:16,760 INFO L276 IsEmpty]: Start isEmpty. Operand 5086 states and 9439 transitions. [2022-01-10 12:05:16,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 12:05:16,763 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:16,763 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] [2022-01-10 12:05:16,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:05:16,764 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:16,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:16,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1150088258, now seen corresponding path program 1 times [2022-01-10 12:05:16,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:16,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689812243] [2022-01-10 12:05:16,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:16,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:16,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:16,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:16,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689812243] [2022-01-10 12:05:16,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689812243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:16,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:16,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:05:16,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565262381] [2022-01-10 12:05:16,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:16,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:05:16,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:16,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:05:16,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:16,860 INFO L87 Difference]: Start difference. First operand 5086 states and 9439 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:17,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:17,081 INFO L93 Difference]: Finished difference Result 10065 states and 18711 transitions. [2022-01-10 12:05:17,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:05:17,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-01-10 12:05:17,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:17,096 INFO L225 Difference]: With dead ends: 10065 [2022-01-10 12:05:17,097 INFO L226 Difference]: Without dead ends: 5086 [2022-01-10 12:05:17,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:17,107 INFO L933 BasicCegarLoop]: 9344 mSDtfsCounter, 9411 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9411 SdHoareTripleChecker+Valid, 9359 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:17,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9411 Valid, 9359 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:05:17,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5086 states. [2022-01-10 12:05:17,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5086 to 5086. [2022-01-10 12:05:17,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5086 states, 5081 states have (on average 1.8557370596339304) internal successors, (9429), 5085 states have internal predecessors, (9429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:17,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5086 states to 5086 states and 9429 transitions. [2022-01-10 12:05:17,295 INFO L78 Accepts]: Start accepts. Automaton has 5086 states and 9429 transitions. Word has length 58 [2022-01-10 12:05:17,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:17,296 INFO L470 AbstractCegarLoop]: Abstraction has 5086 states and 9429 transitions. [2022-01-10 12:05:17,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:17,296 INFO L276 IsEmpty]: Start isEmpty. Operand 5086 states and 9429 transitions. [2022-01-10 12:05:17,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 12:05:17,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:17,297 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] [2022-01-10 12:05:17,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:05:17,298 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:17,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:17,298 INFO L85 PathProgramCache]: Analyzing trace with hash 89947444, now seen corresponding path program 1 times [2022-01-10 12:05:17,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:17,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323477770] [2022-01-10 12:05:17,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:17,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:17,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:17,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:17,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323477770] [2022-01-10 12:05:17,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323477770] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:17,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:17,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:05:17,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578005614] [2022-01-10 12:05:17,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:17,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:05:17,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:17,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:05:17,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:17,363 INFO L87 Difference]: Start difference. First operand 5086 states and 9429 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:17,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:17,615 INFO L93 Difference]: Finished difference Result 12633 states and 23476 transitions. [2022-01-10 12:05:17,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:05:17,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 12:05:17,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:17,646 INFO L225 Difference]: With dead ends: 12633 [2022-01-10 12:05:17,646 INFO L226 Difference]: Without dead ends: 10098 [2022-01-10 12:05:17,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:17,660 INFO L933 BasicCegarLoop]: 14102 mSDtfsCounter, 9407 mSDsluCounter, 9337 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9407 SdHoareTripleChecker+Valid, 23439 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:17,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9407 Valid, 23439 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:17,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10098 states. [2022-01-10 12:05:17,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10098 to 10098. [2022-01-10 12:05:17,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10098 states, 10093 states have (on average 1.8592093530169425) internal successors, (18765), 10097 states have internal predecessors, (18765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:17,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10098 states to 10098 states and 18765 transitions. [2022-01-10 12:05:17,948 INFO L78 Accepts]: Start accepts. Automaton has 10098 states and 18765 transitions. Word has length 60 [2022-01-10 12:05:17,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:17,954 INFO L470 AbstractCegarLoop]: Abstraction has 10098 states and 18765 transitions. [2022-01-10 12:05:17,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:17,955 INFO L276 IsEmpty]: Start isEmpty. Operand 10098 states and 18765 transitions. [2022-01-10 12:05:17,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 12:05:17,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:17,958 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] [2022-01-10 12:05:17,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:05:17,958 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:17,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:17,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1521299150, now seen corresponding path program 1 times [2022-01-10 12:05:17,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:17,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308752887] [2022-01-10 12:05:17,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:17,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:18,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:18,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:18,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308752887] [2022-01-10 12:05:18,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308752887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:18,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:18,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:05:18,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594509409] [2022-01-10 12:05:18,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:18,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:05:18,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:18,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:05:18,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:18,027 INFO L87 Difference]: Start difference. First operand 10098 states and 18765 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:18,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:18,458 INFO L93 Difference]: Finished difference Result 25110 states and 46726 transitions. [2022-01-10 12:05:18,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:05:18,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-10 12:05:18,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:18,517 INFO L225 Difference]: With dead ends: 25110 [2022-01-10 12:05:18,518 INFO L226 Difference]: Without dead ends: 20064 [2022-01-10 12:05:18,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:18,535 INFO L933 BasicCegarLoop]: 9426 mSDtfsCounter, 9373 mSDsluCounter, 9340 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9373 SdHoareTripleChecker+Valid, 18766 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:18,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9373 Valid, 18766 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:18,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20064 states. [2022-01-10 12:05:18,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20064 to 20062. [2022-01-10 12:05:18,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20062 states, 20057 states have (on average 1.8614448820860547) internal successors, (37335), 20061 states have internal predecessors, (37335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:19,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20062 states to 20062 states and 37335 transitions. [2022-01-10 12:05:19,192 INFO L78 Accepts]: Start accepts. Automaton has 20062 states and 37335 transitions. Word has length 61 [2022-01-10 12:05:19,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:19,192 INFO L470 AbstractCegarLoop]: Abstraction has 20062 states and 37335 transitions. [2022-01-10 12:05:19,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:19,192 INFO L276 IsEmpty]: Start isEmpty. Operand 20062 states and 37335 transitions. [2022-01-10 12:05:19,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 12:05:19,195 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:19,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:05:19,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:05:19,196 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:19,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:19,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1204405874, now seen corresponding path program 1 times [2022-01-10 12:05:19,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:19,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215147118] [2022-01-10 12:05:19,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:19,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:19,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:19,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215147118] [2022-01-10 12:05:19,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215147118] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:19,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:19,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:05:19,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886866724] [2022-01-10 12:05:19,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:19,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:05:19,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:19,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:05:19,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:05:19,340 INFO L87 Difference]: Start difference. First operand 20062 states and 37335 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:21,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:21,762 INFO L93 Difference]: Finished difference Result 119588 states and 222805 transitions. [2022-01-10 12:05:21,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:05:21,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-10 12:05:21,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:22,174 INFO L225 Difference]: With dead ends: 119588 [2022-01-10 12:05:22,174 INFO L226 Difference]: Without dead ends: 99555 [2022-01-10 12:05:22,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:05:22,246 INFO L933 BasicCegarLoop]: 37263 mSDtfsCounter, 27988 mSDsluCounter, 46588 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27988 SdHoareTripleChecker+Valid, 83851 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:22,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27988 Valid, 83851 Invalid, 65 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:22,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99555 states. [2022-01-10 12:05:23,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99555 to 20050. [2022-01-10 12:05:23,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20050 states, 20045 states have (on average 1.8617610376652531) internal successors, (37319), 20049 states have internal predecessors, (37319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:23,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20050 states to 20050 states and 37319 transitions. [2022-01-10 12:05:23,594 INFO L78 Accepts]: Start accepts. Automaton has 20050 states and 37319 transitions. Word has length 61 [2022-01-10 12:05:23,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:23,595 INFO L470 AbstractCegarLoop]: Abstraction has 20050 states and 37319 transitions. [2022-01-10 12:05:23,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:23,595 INFO L276 IsEmpty]: Start isEmpty. Operand 20050 states and 37319 transitions. [2022-01-10 12:05:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 12:05:23,598 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:23,599 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] [2022-01-10 12:05:23,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:05:23,599 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:23,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:23,600 INFO L85 PathProgramCache]: Analyzing trace with hash -66538235, now seen corresponding path program 1 times [2022-01-10 12:05:23,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:23,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710803282] [2022-01-10 12:05:23,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:23,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:23,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:23,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:23,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710803282] [2022-01-10 12:05:23,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710803282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:23,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:23,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:05:23,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342583412] [2022-01-10 12:05:23,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:23,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:05:23,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:23,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:05:23,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:05:23,677 INFO L87 Difference]: Start difference. First operand 20050 states and 37319 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:25,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:25,199 INFO L93 Difference]: Finished difference Result 79912 states and 148826 transitions. [2022-01-10 12:05:25,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:05:25,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-10 12:05:25,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:25,335 INFO L225 Difference]: With dead ends: 79912 [2022-01-10 12:05:25,336 INFO L226 Difference]: Without dead ends: 59885 [2022-01-10 12:05:25,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:05:25,374 INFO L933 BasicCegarLoop]: 9421 mSDtfsCounter, 28037 mSDsluCounter, 27987 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28037 SdHoareTripleChecker+Valid, 37408 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:25,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28037 Valid, 37408 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:25,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59885 states. [2022-01-10 12:05:26,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59885 to 20058. [2022-01-10 12:05:26,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20058 states, 20053 states have (on average 1.8612676407520072) internal successors, (37324), 20057 states have internal predecessors, (37324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:26,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20058 states to 20058 states and 37324 transitions. [2022-01-10 12:05:26,257 INFO L78 Accepts]: Start accepts. Automaton has 20058 states and 37324 transitions. Word has length 63 [2022-01-10 12:05:26,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:26,257 INFO L470 AbstractCegarLoop]: Abstraction has 20058 states and 37324 transitions. [2022-01-10 12:05:26,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:26,257 INFO L276 IsEmpty]: Start isEmpty. Operand 20058 states and 37324 transitions. [2022-01-10 12:05:26,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:05:26,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:26,261 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] [2022-01-10 12:05:26,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:05:26,261 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:26,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:26,262 INFO L85 PathProgramCache]: Analyzing trace with hash -457230197, now seen corresponding path program 1 times [2022-01-10 12:05:26,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:26,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195467594] [2022-01-10 12:05:26,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:26,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:26,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:26,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195467594] [2022-01-10 12:05:26,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195467594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:26,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:26,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:05:26,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289537095] [2022-01-10 12:05:26,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:26,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:05:26,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:26,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:05:26,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:05:26,388 INFO L87 Difference]: Start difference. First operand 20058 states and 37324 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:28,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:28,490 INFO L93 Difference]: Finished difference Result 99717 states and 185747 transitions. [2022-01-10 12:05:28,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:05:28,491 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-10 12:05:28,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:28,653 INFO L225 Difference]: With dead ends: 99717 [2022-01-10 12:05:28,654 INFO L226 Difference]: Without dead ends: 79675 [2022-01-10 12:05:28,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:05:28,691 INFO L933 BasicCegarLoop]: 37231 mSDtfsCounter, 37344 mSDsluCounter, 37209 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37344 SdHoareTripleChecker+Valid, 74440 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:28,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37344 Valid, 74440 Invalid, 33 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:28,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79675 states. [2022-01-10 12:05:29,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79675 to 20050. [2022-01-10 12:05:29,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20050 states, 20045 states have (on average 1.8613120478922425) internal successors, (37310), 20049 states have internal predecessors, (37310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:29,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20050 states to 20050 states and 37310 transitions. [2022-01-10 12:05:29,820 INFO L78 Accepts]: Start accepts. Automaton has 20050 states and 37310 transitions. Word has length 64 [2022-01-10 12:05:29,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:29,820 INFO L470 AbstractCegarLoop]: Abstraction has 20050 states and 37310 transitions. [2022-01-10 12:05:29,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:29,821 INFO L276 IsEmpty]: Start isEmpty. Operand 20050 states and 37310 transitions. [2022-01-10 12:05:29,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:05:29,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:29,824 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] [2022-01-10 12:05:29,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:05:29,825 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:29,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:29,825 INFO L85 PathProgramCache]: Analyzing trace with hash 638777277, now seen corresponding path program 1 times [2022-01-10 12:05:29,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:29,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168506629] [2022-01-10 12:05:29,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:29,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:29,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:29,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168506629] [2022-01-10 12:05:29,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168506629] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:29,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:29,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:05:29,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609541659] [2022-01-10 12:05:29,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:29,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:05:29,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:29,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:05:29,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:05:29,895 INFO L87 Difference]: Start difference. First operand 20050 states and 37310 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:31,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:31,907 INFO L93 Difference]: Finished difference Result 79717 states and 148491 transitions. [2022-01-10 12:05:31,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:05:31,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 12:05:31,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:32,018 INFO L225 Difference]: With dead ends: 79717 [2022-01-10 12:05:32,018 INFO L226 Difference]: Without dead ends: 59714 [2022-01-10 12:05:32,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:05:32,043 INFO L933 BasicCegarLoop]: 9358 mSDtfsCounter, 46614 mSDsluCounter, 27820 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46614 SdHoareTripleChecker+Valid, 37178 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:32,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46614 Valid, 37178 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:32,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59714 states. [2022-01-10 12:05:32,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59714 to 20076. [2022-01-10 12:05:32,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20076 states, 20071 states have (on average 1.8607941806586616) internal successors, (37348), 20075 states have internal predecessors, (37348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:32,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20076 states to 20076 states and 37348 transitions. [2022-01-10 12:05:32,919 INFO L78 Accepts]: Start accepts. Automaton has 20076 states and 37348 transitions. Word has length 65 [2022-01-10 12:05:32,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:32,919 INFO L470 AbstractCegarLoop]: Abstraction has 20076 states and 37348 transitions. [2022-01-10 12:05:32,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:32,920 INFO L276 IsEmpty]: Start isEmpty. Operand 20076 states and 37348 transitions. [2022-01-10 12:05:32,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:05:32,923 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:32,923 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] [2022-01-10 12:05:32,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:05:32,923 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:32,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:32,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1865341197, now seen corresponding path program 1 times [2022-01-10 12:05:32,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:32,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515013048] [2022-01-10 12:05:32,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:32,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:32,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:32,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:32,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515013048] [2022-01-10 12:05:32,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515013048] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:32,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:32,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:05:32,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512310529] [2022-01-10 12:05:32,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:32,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:05:32,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:32,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:05:32,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:05:32,996 INFO L87 Difference]: Start difference. First operand 20076 states and 37348 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:34,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:34,032 INFO L93 Difference]: Finished difference Result 44938 states and 83669 transitions. [2022-01-10 12:05:34,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:05:34,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 12:05:34,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:34,088 INFO L225 Difference]: With dead ends: 44938 [2022-01-10 12:05:34,088 INFO L226 Difference]: Without dead ends: 29903 [2022-01-10 12:05:34,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:05:34,113 INFO L933 BasicCegarLoop]: 9351 mSDtfsCounter, 27859 mSDsluCounter, 9339 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27859 SdHoareTripleChecker+Valid, 18690 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:34,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27859 Valid, 18690 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:05:34,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29903 states. [2022-01-10 12:05:35,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29903 to 19996. [2022-01-10 12:05:35,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19996 states, 19991 states have (on average 1.861487669451253) internal successors, (37213), 19995 states have internal predecessors, (37213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:35,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19996 states to 19996 states and 37213 transitions. [2022-01-10 12:05:35,237 INFO L78 Accepts]: Start accepts. Automaton has 19996 states and 37213 transitions. Word has length 67 [2022-01-10 12:05:35,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:35,237 INFO L470 AbstractCegarLoop]: Abstraction has 19996 states and 37213 transitions. [2022-01-10 12:05:35,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:35,237 INFO L276 IsEmpty]: Start isEmpty. Operand 19996 states and 37213 transitions. [2022-01-10 12:05:35,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:05:35,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:35,240 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] [2022-01-10 12:05:35,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:05:35,240 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:35,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:35,241 INFO L85 PathProgramCache]: Analyzing trace with hash 399243244, now seen corresponding path program 1 times [2022-01-10 12:05:35,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:35,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687448772] [2022-01-10 12:05:35,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:35,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:35,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:35,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:35,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687448772] [2022-01-10 12:05:35,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687448772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:35,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:35,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:05:35,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385968293] [2022-01-10 12:05:35,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:35,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:05:35,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:35,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:05:35,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:05:35,319 INFO L87 Difference]: Start difference. First operand 19996 states and 37213 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:35,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:35,698 INFO L93 Difference]: Finished difference Result 29939 states and 55735 transitions. [2022-01-10 12:05:35,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:05:35,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 12:05:35,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:35,715 INFO L225 Difference]: With dead ends: 29939 [2022-01-10 12:05:35,715 INFO L226 Difference]: Without dead ends: 10044 [2022-01-10 12:05:35,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:05:35,733 INFO L933 BasicCegarLoop]: 9357 mSDtfsCounter, 9314 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9314 SdHoareTripleChecker+Valid, 9435 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:35,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9314 Valid, 9435 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:35,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10044 states. [2022-01-10 12:05:36,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10044 to 10044. [2022-01-10 12:05:36,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10044 states, 10040 states have (on average 1.8593625498007968) internal successors, (18668), 10043 states have internal predecessors, (18668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:36,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10044 states to 10044 states and 18668 transitions. [2022-01-10 12:05:36,196 INFO L78 Accepts]: Start accepts. Automaton has 10044 states and 18668 transitions. Word has length 68 [2022-01-10 12:05:36,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:36,196 INFO L470 AbstractCegarLoop]: Abstraction has 10044 states and 18668 transitions. [2022-01-10 12:05:36,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:36,196 INFO L276 IsEmpty]: Start isEmpty. Operand 10044 states and 18668 transitions. [2022-01-10 12:05:36,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 12:05:36,198 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:36,199 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] [2022-01-10 12:05:36,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:05:36,199 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:36,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:36,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1262726759, now seen corresponding path program 1 times [2022-01-10 12:05:36,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:36,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085898214] [2022-01-10 12:05:36,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:36,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:36,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:36,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:36,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085898214] [2022-01-10 12:05:36,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085898214] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:36,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:36,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:05:36,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559092873] [2022-01-10 12:05:36,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:36,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:05:36,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:36,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:05:36,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:05:36,265 INFO L87 Difference]: Start difference. First operand 10044 states and 18668 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:36,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:36,694 INFO L93 Difference]: Finished difference Result 19975 states and 37170 transitions. [2022-01-10 12:05:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:05:36,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 12:05:36,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:36,711 INFO L225 Difference]: With dead ends: 19975 [2022-01-10 12:05:36,711 INFO L226 Difference]: Without dead ends: 10032 [2022-01-10 12:05:36,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:05:36,722 INFO L933 BasicCegarLoop]: 9339 mSDtfsCounter, 18596 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18596 SdHoareTripleChecker+Valid, 9430 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:36,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18596 Valid, 9430 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:36,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10032 states. [2022-01-10 12:05:37,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10032 to 10032. [2022-01-10 12:05:37,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10032 states, 10028 states have (on average 1.8593936976465895) internal successors, (18646), 10031 states have internal predecessors, (18646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:37,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10032 states to 10032 states and 18646 transitions. [2022-01-10 12:05:37,141 INFO L78 Accepts]: Start accepts. Automaton has 10032 states and 18646 transitions. Word has length 70 [2022-01-10 12:05:37,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:37,141 INFO L470 AbstractCegarLoop]: Abstraction has 10032 states and 18646 transitions. [2022-01-10 12:05:37,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:37,142 INFO L276 IsEmpty]: Start isEmpty. Operand 10032 states and 18646 transitions. [2022-01-10 12:05:37,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 12:05:37,144 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:37,144 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] [2022-01-10 12:05:37,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:05:37,144 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:37,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:37,144 INFO L85 PathProgramCache]: Analyzing trace with hash 836222083, now seen corresponding path program 1 times [2022-01-10 12:05:37,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:37,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527064672] [2022-01-10 12:05:37,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:37,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:37,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:37,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527064672] [2022-01-10 12:05:37,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527064672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:37,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:37,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:05:37,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216763001] [2022-01-10 12:05:37,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:37,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:05:37,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:37,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:05:37,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:05:37,221 INFO L87 Difference]: Start difference. First operand 10032 states and 18646 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:37,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:37,793 INFO L93 Difference]: Finished difference Result 20001 states and 37200 transitions. [2022-01-10 12:05:37,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:05:37,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 12:05:37,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:37,815 INFO L225 Difference]: With dead ends: 20001 [2022-01-10 12:05:37,815 INFO L226 Difference]: Without dead ends: 10094 [2022-01-10 12:05:37,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:05:37,830 INFO L933 BasicCegarLoop]: 9365 mSDtfsCounter, 18630 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18630 SdHoareTripleChecker+Valid, 9514 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:37,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18630 Valid, 9514 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:37,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10094 states. [2022-01-10 12:05:38,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10094 to 10032. [2022-01-10 12:05:38,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10032 states, 10028 states have (on average 1.8591942560829677) internal successors, (18644), 10031 states have internal predecessors, (18644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:38,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10032 states to 10032 states and 18644 transitions. [2022-01-10 12:05:38,463 INFO L78 Accepts]: Start accepts. Automaton has 10032 states and 18644 transitions. Word has length 70 [2022-01-10 12:05:38,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:38,463 INFO L470 AbstractCegarLoop]: Abstraction has 10032 states and 18644 transitions. [2022-01-10 12:05:38,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:38,464 INFO L276 IsEmpty]: Start isEmpty. Operand 10032 states and 18644 transitions. [2022-01-10 12:05:38,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 12:05:38,465 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:38,465 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] [2022-01-10 12:05:38,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:05:38,466 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:38,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:38,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1091337024, now seen corresponding path program 1 times [2022-01-10 12:05:38,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:38,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100428621] [2022-01-10 12:05:38,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:38,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:38,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:38,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:38,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100428621] [2022-01-10 12:05:38,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100428621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:38,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:38,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:05:38,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054370435] [2022-01-10 12:05:38,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:38,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:05:38,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:38,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:05:38,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:05:38,545 INFO L87 Difference]: Start difference. First operand 10032 states and 18644 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:39,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:39,866 INFO L93 Difference]: Finished difference Result 39841 states and 74162 transitions. [2022-01-10 12:05:39,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 12:05:39,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 12:05:39,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:39,928 INFO L225 Difference]: With dead ends: 39841 [2022-01-10 12:05:39,928 INFO L226 Difference]: Without dead ends: 29934 [2022-01-10 12:05:39,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:05:39,951 INFO L933 BasicCegarLoop]: 18606 mSDtfsCounter, 46439 mSDsluCounter, 27941 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46439 SdHoareTripleChecker+Valid, 46547 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:39,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46439 Valid, 46547 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:05:39,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29934 states. [2022-01-10 12:05:40,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29934 to 10052. [2022-01-10 12:05:40,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10052 states, 10048 states have (on average 1.85828025477707) internal successors, (18672), 10051 states have internal predecessors, (18672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:40,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10052 states to 10052 states and 18672 transitions. [2022-01-10 12:05:40,485 INFO L78 Accepts]: Start accepts. Automaton has 10052 states and 18672 transitions. Word has length 71 [2022-01-10 12:05:40,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:40,485 INFO L470 AbstractCegarLoop]: Abstraction has 10052 states and 18672 transitions. [2022-01-10 12:05:40,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:40,485 INFO L276 IsEmpty]: Start isEmpty. Operand 10052 states and 18672 transitions. [2022-01-10 12:05:40,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:05:40,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:40,487 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] [2022-01-10 12:05:40,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:05:40,488 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:40,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:40,488 INFO L85 PathProgramCache]: Analyzing trace with hash -414862369, now seen corresponding path program 1 times [2022-01-10 12:05:40,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:40,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852345792] [2022-01-10 12:05:40,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:40,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:40,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:40,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:40,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852345792] [2022-01-10 12:05:40,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852345792] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:40,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:40,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:05:40,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451485774] [2022-01-10 12:05:40,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:40,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:05:40,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:40,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:05:40,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:05:40,580 INFO L87 Difference]: Start difference. First operand 10052 states and 18672 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:41,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:41,201 INFO L93 Difference]: Finished difference Result 17615 states and 32721 transitions. [2022-01-10 12:05:41,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:05:41,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 12:05:41,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:41,223 INFO L225 Difference]: With dead ends: 17615 [2022-01-10 12:05:41,223 INFO L226 Difference]: Without dead ends: 10081 [2022-01-10 12:05:41,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:05:41,232 INFO L933 BasicCegarLoop]: 9313 mSDtfsCounter, 9368 mSDsluCounter, 18646 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9368 SdHoareTripleChecker+Valid, 27959 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:41,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9368 Valid, 27959 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:05:41,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10081 states. [2022-01-10 12:05:41,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10081 to 10049. [2022-01-10 12:05:41,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10049 states, 10045 states have (on average 1.857740169238427) internal successors, (18661), 10048 states have internal predecessors, (18661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:41,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10049 states to 10049 states and 18661 transitions. [2022-01-10 12:05:41,662 INFO L78 Accepts]: Start accepts. Automaton has 10049 states and 18661 transitions. Word has length 72 [2022-01-10 12:05:41,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:41,662 INFO L470 AbstractCegarLoop]: Abstraction has 10049 states and 18661 transitions. [2022-01-10 12:05:41,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:41,663 INFO L276 IsEmpty]: Start isEmpty. Operand 10049 states and 18661 transitions. [2022-01-10 12:05:41,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 12:05:41,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:41,665 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] [2022-01-10 12:05:41,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:05:41,665 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:41,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:41,666 INFO L85 PathProgramCache]: Analyzing trace with hash -2850936, now seen corresponding path program 1 times [2022-01-10 12:05:41,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:41,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446817360] [2022-01-10 12:05:41,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:41,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:41,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:41,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:41,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446817360] [2022-01-10 12:05:41,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446817360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:41,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:41,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:05:41,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213220248] [2022-01-10 12:05:41,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:41,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:05:41,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:41,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:05:41,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:05:41,764 INFO L87 Difference]: Start difference. First operand 10049 states and 18661 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:44,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:44,246 INFO L93 Difference]: Finished difference Result 30008 states and 55713 transitions. [2022-01-10 12:05:44,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:05:44,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-10 12:05:44,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:44,284 INFO L225 Difference]: With dead ends: 30008 [2022-01-10 12:05:44,284 INFO L226 Difference]: Without dead ends: 23833 [2022-01-10 12:05:44,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:05:44,298 INFO L933 BasicCegarLoop]: 9098 mSDtfsCounter, 28704 mSDsluCounter, 31374 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28704 SdHoareTripleChecker+Valid, 40472 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:44,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28704 Valid, 40472 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 12:05:44,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23833 states. [2022-01-10 12:05:44,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23833 to 13889. [2022-01-10 12:05:44,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13889 states, 13885 states have (on average 1.8397551314368024) internal successors, (25545), 13888 states have internal predecessors, (25545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:44,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13889 states to 13889 states and 25545 transitions. [2022-01-10 12:05:44,967 INFO L78 Accepts]: Start accepts. Automaton has 13889 states and 25545 transitions. Word has length 73 [2022-01-10 12:05:44,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:44,967 INFO L470 AbstractCegarLoop]: Abstraction has 13889 states and 25545 transitions. [2022-01-10 12:05:44,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:44,968 INFO L276 IsEmpty]: Start isEmpty. Operand 13889 states and 25545 transitions. [2022-01-10 12:05:44,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 12:05:44,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:44,970 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] [2022-01-10 12:05:44,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:05:44,970 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:44,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:44,970 INFO L85 PathProgramCache]: Analyzing trace with hash -513414314, now seen corresponding path program 1 times [2022-01-10 12:05:44,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:44,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314526396] [2022-01-10 12:05:44,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:44,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:45,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:45,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:45,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314526396] [2022-01-10 12:05:45,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314526396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:45,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:45,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:05:45,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371651329] [2022-01-10 12:05:45,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:45,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:05:45,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:45,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:05:45,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:45,132 INFO L87 Difference]: Start difference. First operand 13889 states and 25545 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:46,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:46,405 INFO L93 Difference]: Finished difference Result 35291 states and 65369 transitions. [2022-01-10 12:05:46,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:05:46,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-01-10 12:05:46,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:46,453 INFO L225 Difference]: With dead ends: 35291 [2022-01-10 12:05:46,453 INFO L226 Difference]: Without dead ends: 25894 [2022-01-10 12:05:46,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:46,470 INFO L933 BasicCegarLoop]: 8710 mSDtfsCounter, 8224 mSDsluCounter, 7823 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8224 SdHoareTripleChecker+Valid, 16533 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:46,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8224 Valid, 16533 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:05:46,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25894 states. [2022-01-10 12:05:47,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25894 to 19883. [2022-01-10 12:05:47,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19883 states, 19879 states have (on average 1.842798933547965) internal successors, (36633), 19882 states have internal predecessors, (36633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:47,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19883 states to 19883 states and 36633 transitions. [2022-01-10 12:05:47,512 INFO L78 Accepts]: Start accepts. Automaton has 19883 states and 36633 transitions. Word has length 74 [2022-01-10 12:05:47,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:47,513 INFO L470 AbstractCegarLoop]: Abstraction has 19883 states and 36633 transitions. [2022-01-10 12:05:47,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:47,513 INFO L276 IsEmpty]: Start isEmpty. Operand 19883 states and 36633 transitions. [2022-01-10 12:05:47,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 12:05:47,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:47,518 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] [2022-01-10 12:05:47,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:05:47,519 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:47,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:47,519 INFO L85 PathProgramCache]: Analyzing trace with hash -170433745, now seen corresponding path program 1 times [2022-01-10 12:05:47,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:47,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21801011] [2022-01-10 12:05:47,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:47,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:47,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:47,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:47,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21801011] [2022-01-10 12:05:47,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21801011] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:47,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:47,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:05:47,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971042715] [2022-01-10 12:05:47,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:47,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:05:47,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:47,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:05:47,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:05:47,590 INFO L87 Difference]: Start difference. First operand 19883 states and 36633 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:50,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:50,174 INFO L93 Difference]: Finished difference Result 55681 states and 102913 transitions. [2022-01-10 12:05:50,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:05:50,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-01-10 12:05:50,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:50,234 INFO L225 Difference]: With dead ends: 55681 [2022-01-10 12:05:50,235 INFO L226 Difference]: Without dead ends: 35972 [2022-01-10 12:05:50,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:05:50,254 INFO L933 BasicCegarLoop]: 8612 mSDtfsCounter, 23457 mSDsluCounter, 7716 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23457 SdHoareTripleChecker+Valid, 16328 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:50,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23457 Valid, 16328 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 12:05:50,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35972 states. [2022-01-10 12:05:51,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35972 to 19883. [2022-01-10 12:05:51,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19883 states, 19879 states have (on average 1.8307258916444489) internal successors, (36393), 19882 states have internal predecessors, (36393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:51,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19883 states to 19883 states and 36393 transitions. [2022-01-10 12:05:51,300 INFO L78 Accepts]: Start accepts. Automaton has 19883 states and 36393 transitions. Word has length 94 [2022-01-10 12:05:51,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:51,300 INFO L470 AbstractCegarLoop]: Abstraction has 19883 states and 36393 transitions. [2022-01-10 12:05:51,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:51,301 INFO L276 IsEmpty]: Start isEmpty. Operand 19883 states and 36393 transitions. [2022-01-10 12:05:51,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 12:05:51,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:51,307 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] [2022-01-10 12:05:51,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 12:05:51,307 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:51,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:51,308 INFO L85 PathProgramCache]: Analyzing trace with hash 802400270, now seen corresponding path program 1 times [2022-01-10 12:05:51,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:51,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135144267] [2022-01-10 12:05:51,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:51,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:51,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:51,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:51,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135144267] [2022-01-10 12:05:51,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135144267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:51,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:51,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:05:51,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759249837] [2022-01-10 12:05:51,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:51,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:05:51,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:51,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:05:51,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:05:51,384 INFO L87 Difference]: Start difference. First operand 19883 states and 36393 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:53,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:53,002 INFO L93 Difference]: Finished difference Result 39302 states and 71355 transitions. [2022-01-10 12:05:53,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:05:53,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 12:05:53,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:53,037 INFO L225 Difference]: With dead ends: 39302 [2022-01-10 12:05:53,037 INFO L226 Difference]: Without dead ends: 22305 [2022-01-10 12:05:53,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:05:53,050 INFO L933 BasicCegarLoop]: 10103 mSDtfsCounter, 15110 mSDsluCounter, 10095 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15110 SdHoareTripleChecker+Valid, 20198 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:53,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15110 Valid, 20198 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:05:53,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22305 states. [2022-01-10 12:05:54,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22305 to 16973. [2022-01-10 12:05:54,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16973 states, 16969 states have (on average 1.8075903117449468) internal successors, (30673), 16972 states have internal predecessors, (30673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:54,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16973 states to 16973 states and 30673 transitions. [2022-01-10 12:05:54,083 INFO L78 Accepts]: Start accepts. Automaton has 16973 states and 30673 transitions. Word has length 102 [2022-01-10 12:05:54,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:54,083 INFO L470 AbstractCegarLoop]: Abstraction has 16973 states and 30673 transitions. [2022-01-10 12:05:54,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:54,083 INFO L276 IsEmpty]: Start isEmpty. Operand 16973 states and 30673 transitions. [2022-01-10 12:05:54,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 12:05:54,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:54,087 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] [2022-01-10 12:05:54,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 12:05:54,088 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:54,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:54,088 INFO L85 PathProgramCache]: Analyzing trace with hash -804122619, now seen corresponding path program 1 times [2022-01-10 12:05:54,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:54,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669374498] [2022-01-10 12:05:54,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:54,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:54,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:05:54,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:54,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669374498] [2022-01-10 12:05:54,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669374498] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:54,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:54,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:05:54,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789198209] [2022-01-10 12:05:54,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:54,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:05:54,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:54,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:05:54,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:54,150 INFO L87 Difference]: Start difference. First operand 16973 states and 30673 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:56,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:56,109 INFO L93 Difference]: Finished difference Result 37759 states and 68341 transitions. [2022-01-10 12:05:56,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:05:56,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-01-10 12:05:56,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:56,162 INFO L225 Difference]: With dead ends: 37759 [2022-01-10 12:05:56,162 INFO L226 Difference]: Without dead ends: 27276 [2022-01-10 12:05:56,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:56,182 INFO L933 BasicCegarLoop]: 11309 mSDtfsCounter, 6690 mSDsluCounter, 4624 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6690 SdHoareTripleChecker+Valid, 15933 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:56,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6690 Valid, 15933 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:05:56,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27276 states.