/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_spec9_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:08:46,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:08:46,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:08:46,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:08:46,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:08:46,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:08:46,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:08:46,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:08:46,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:08:46,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:08:46,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:08:46,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:08:46,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:08:46,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:08:46,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:08:46,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:08:46,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:08:46,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:08:46,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:08:46,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:08:46,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:08:46,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:08:46,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:08:46,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:08:46,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:08:46,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:08:46,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:08:46,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:08:46,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:08:46,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:08:46,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:08:46,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:08:46,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:08:46,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:08:46,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:08:46,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:08:46,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:08:46,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:08:46,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:08:46,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:08:46,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:08:46,440 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 12:08:46,467 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:08:46,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:08:46,468 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:08:46,468 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:08:46,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:08:46,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:08:46,469 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:08:46,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:08:46,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:08:46,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:08:46,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:08:46,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:08:46,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:08:46,470 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:08:46,470 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:08:46,470 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:08:46,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:08:46,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:08:46,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:08:46,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:08:46,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:08:46,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:08:46,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:08:46,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:08:46,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:08:46,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:08:46,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:08:46,471 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:08:46,472 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:08:46,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:08:46,472 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:08:46,472 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:08:46,472 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:08:46,473 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:08:46,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:08:46,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:08:46,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:08:46,901 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:08:46,910 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:08:46,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product27.cil.c [2022-01-10 12:08:46,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ebfd263/93968e69467d4cbea0581c71169464cc/FLAG5b401472a [2022-01-10 12:08:47,654 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:08:47,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product27.cil.c [2022-01-10 12:08:47,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ebfd263/93968e69467d4cbea0581c71169464cc/FLAG5b401472a [2022-01-10 12:08:47,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ebfd263/93968e69467d4cbea0581c71169464cc [2022-01-10 12:08:47,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:08:47,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:08:47,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:08:47,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:08:47,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:08:47,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:08:47" (1/1) ... [2022-01-10 12:08:47,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6665c0e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:08:47, skipping insertion in model container [2022-01-10 12:08:47,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:08:47" (1/1) ... [2022-01-10 12:08:48,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:08:48,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:08:48,711 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_spec9_product27.cil.c[66437,66450] [2022-01-10 12:08:48,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:08:48,734 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:08:48,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:08:48,832 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_spec9_product27.cil.c[66437,66450] [2022-01-10 12:08:48,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:08:48,841 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:08:48,949 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_spec9_product27.cil.c[66437,66450] [2022-01-10 12:08:48,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:08:49,034 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:08:49,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:08:49 WrapperNode [2022-01-10 12:08:49,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:08:49,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:08:49,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:08:49,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:08:49,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:08:49" (1/1) ... [2022-01-10 12:08:49,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:08:49" (1/1) ... [2022-01-10 12:08:49,295 INFO L137 Inliner]: procedures = 97, calls = 339, calls flagged for inlining = 192, calls inlined = 324, statements flattened = 9556 [2022-01-10 12:08:49,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:08:49,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:08:49,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:08:49,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:08:49,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:08:49" (1/1) ... [2022-01-10 12:08:49,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:08:49" (1/1) ... [2022-01-10 12:08:49,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:08:49" (1/1) ... [2022-01-10 12:08:49,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:08:49" (1/1) ... [2022-01-10 12:08:49,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:08:49" (1/1) ... [2022-01-10 12:08:49,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:08:49" (1/1) ... [2022-01-10 12:08:49,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:08:49" (1/1) ... [2022-01-10 12:08:49,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:08:49,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:08:49,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:08:49,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:08:49,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:08:49" (1/1) ... [2022-01-10 12:08:49,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:08:49,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:08:49,624 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 12:08:49,641 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 12:08:49,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:08:49,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:08:49,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:08:49,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:08:49,845 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:08:49,847 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:08:54,013 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:08:54,041 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:08:54,042 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:08:54,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:08:54 BoogieIcfgContainer [2022-01-10 12:08:54,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:08:54,049 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:08:54,049 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:08:54,050 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:08:54,053 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:08:54" (1/1) ... [2022-01-10 12:08:54,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:08:54 BasicIcfg [2022-01-10 12:08:54,782 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:08:54,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:08:54,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:08:54,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:08:54,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:08:47" (1/4) ... [2022-01-10 12:08:54,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1504f8c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:08:54, skipping insertion in model container [2022-01-10 12:08:54,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:08:49" (2/4) ... [2022-01-10 12:08:54,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1504f8c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:08:54, skipping insertion in model container [2022-01-10 12:08:54,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:08:54" (3/4) ... [2022-01-10 12:08:54,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1504f8c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:08:54, skipping insertion in model container [2022-01-10 12:08:54,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:08:54" (4/4) ... [2022-01-10 12:08:54,786 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product27.cil.cTransformedIcfg [2022-01-10 12:08:54,790 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:08:54,790 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 12:08:54,835 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:08:54,841 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 12:08:54,841 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 12:08:54,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 2676 states, 2670 states have (on average 1.8610486891385767) internal successors, (4969), 2675 states have internal predecessors, (4969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:08:54,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 12:08:54,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:08:54,896 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] [2022-01-10 12:08:54,897 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 12:08:54,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:08:54,900 INFO L85 PathProgramCache]: Analyzing trace with hash -710395541, now seen corresponding path program 1 times [2022-01-10 12:08:54,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:08:54,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111756043] [2022-01-10 12:08:54,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:08:54,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:08:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:08:55,216 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 12:08:55,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:08:55,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111756043] [2022-01-10 12:08:55,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111756043] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:08:55,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:08:55,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:08:55,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346582214] [2022-01-10 12:08:55,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:08:55,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:08:55,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:08:55,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:08:55,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:08:55,244 INFO L87 Difference]: Start difference. First operand has 2676 states, 2670 states have (on average 1.8610486891385767) internal successors, (4969), 2675 states have internal predecessors, (4969), 0 states have call successors, (0), 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 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:08:55,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:08:55,433 INFO L93 Difference]: Finished difference Result 5337 states and 9915 transitions. [2022-01-10 12:08:55,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:08:55,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2022-01-10 12:08:55,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:08:55,503 INFO L225 Difference]: With dead ends: 5337 [2022-01-10 12:08:55,503 INFO L226 Difference]: Without dead ends: 2665 [2022-01-10 12:08:55,515 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 12:08:55,526 INFO L933 BasicCegarLoop]: 4948 mSDtfsCounter, 4943 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4943 SdHoareTripleChecker+Valid, 4959 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:08:55,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4943 Valid, 4959 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:08:55,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2022-01-10 12:08:55,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2665. [2022-01-10 12:08:55,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2665 states, 2660 states have (on average 1.8590225563909775) internal successors, (4945), 2664 states have internal predecessors, (4945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:08:55,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 4945 transitions. [2022-01-10 12:08:55,856 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 4945 transitions. Word has length 50 [2022-01-10 12:08:55,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:08:55,857 INFO L470 AbstractCegarLoop]: Abstraction has 2665 states and 4945 transitions. [2022-01-10 12:08:55,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:08:55,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 4945 transitions. [2022-01-10 12:08:55,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 12:08:55,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:08:55,862 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] [2022-01-10 12:08:55,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:08:55,862 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 12:08:55,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:08:55,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1308047072, now seen corresponding path program 1 times [2022-01-10 12:08:55,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:08:55,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229100918] [2022-01-10 12:08:55,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:08:55,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:08:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:08:55,945 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 12:08:55,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:08:55,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229100918] [2022-01-10 12:08:55,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229100918] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:08:55,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:08:55,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:08:55,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228356180] [2022-01-10 12:08:55,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:08:55,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:08:55,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:08:55,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:08:55,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:08:55,948 INFO L87 Difference]: Start difference. First operand 2665 states and 4945 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:08:56,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:08:56,128 INFO L93 Difference]: Finished difference Result 5280 states and 9804 transitions. [2022-01-10 12:08:56,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:08:56,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-10 12:08:56,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:08:56,137 INFO L225 Difference]: With dead ends: 5280 [2022-01-10 12:08:56,137 INFO L226 Difference]: Without dead ends: 2665 [2022-01-10 12:08:56,140 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 12:08:56,141 INFO L933 BasicCegarLoop]: 4885 mSDtfsCounter, 4903 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4903 SdHoareTripleChecker+Valid, 4900 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:08:56,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4903 Valid, 4900 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:08:56,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2022-01-10 12:08:56,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2665. [2022-01-10 12:08:56,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2665 states, 2660 states have (on average 1.849624060150376) internal successors, (4920), 2664 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:08:56,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 4920 transitions. [2022-01-10 12:08:56,234 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 4920 transitions. Word has length 57 [2022-01-10 12:08:56,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:08:56,235 INFO L470 AbstractCegarLoop]: Abstraction has 2665 states and 4920 transitions. [2022-01-10 12:08:56,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:08:56,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 4920 transitions. [2022-01-10 12:08:56,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 12:08:56,246 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:08:56,246 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 12:08:56,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:08:56,246 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 12:08:56,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:08:56,247 INFO L85 PathProgramCache]: Analyzing trace with hash 592592997, now seen corresponding path program 1 times [2022-01-10 12:08:56,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:08:56,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597391000] [2022-01-10 12:08:56,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:08:56,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:08:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:08:56,346 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 12:08:56,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:08:56,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597391000] [2022-01-10 12:08:56,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597391000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:08:56,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:08:56,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:08:56,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011957066] [2022-01-10 12:08:56,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:08:56,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:08:56,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:08:56,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:08:56,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:08:56,349 INFO L87 Difference]: Start difference. First operand 2665 states and 4920 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 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 12:08:56,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:08:56,537 INFO L93 Difference]: Finished difference Result 6849 states and 12708 transitions. [2022-01-10 12:08:56,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:08:56,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 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 12:08:56,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:08:56,555 INFO L225 Difference]: With dead ends: 6849 [2022-01-10 12:08:56,555 INFO L226 Difference]: Without dead ends: 4582 [2022-01-10 12:08:56,563 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 12:08:56,565 INFO L933 BasicCegarLoop]: 5021 mSDtfsCounter, 4750 mSDsluCounter, 3620 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4750 SdHoareTripleChecker+Valid, 8641 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:08:56,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4750 Valid, 8641 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:08:56,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4582 states. [2022-01-10 12:08:56,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4582 to 4565. [2022-01-10 12:08:56,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4565 states, 4560 states have (on average 1.8550438596491228) internal successors, (8459), 4564 states have internal predecessors, (8459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:08:56,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4565 states to 4565 states and 8459 transitions. [2022-01-10 12:08:56,841 INFO L78 Accepts]: Start accepts. Automaton has 4565 states and 8459 transitions. Word has length 60 [2022-01-10 12:08:56,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:08:56,841 INFO L470 AbstractCegarLoop]: Abstraction has 4565 states and 8459 transitions. [2022-01-10 12:08:56,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 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 12:08:56,842 INFO L276 IsEmpty]: Start isEmpty. Operand 4565 states and 8459 transitions. [2022-01-10 12:08:56,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 12:08:56,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:08:56,844 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 12:08:56,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:08:56,844 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 12:08:56,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:08:56,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1462337907, now seen corresponding path program 1 times [2022-01-10 12:08:56,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:08:56,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702073961] [2022-01-10 12:08:56,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:08:56,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:08:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:08:56,908 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 12:08:56,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:08:56,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702073961] [2022-01-10 12:08:56,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702073961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:08:56,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:08:56,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:08:56,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8194499] [2022-01-10 12:08:56,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:08:56,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:08:56,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:08:56,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:08:56,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:08:56,910 INFO L87 Difference]: Start difference. First operand 4565 states and 8459 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 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 12:08:57,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:08:57,220 INFO L93 Difference]: Finished difference Result 12450 states and 23142 transitions. [2022-01-10 12:08:57,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:08:57,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 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 12:08:57,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:08:57,250 INFO L225 Difference]: With dead ends: 12450 [2022-01-10 12:08:57,250 INFO L226 Difference]: Without dead ends: 8284 [2022-01-10 12:08:57,260 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 12:08:57,260 INFO L933 BasicCegarLoop]: 4809 mSDtfsCounter, 4688 mSDsluCounter, 3620 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4688 SdHoareTripleChecker+Valid, 8429 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:08:57,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4688 Valid, 8429 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:08:57,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2022-01-10 12:08:57,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 8267. [2022-01-10 12:08:57,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8267 states, 8262 states have (on average 1.8575405470830308) internal successors, (15347), 8266 states have internal predecessors, (15347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:08:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8267 states to 8267 states and 15347 transitions. [2022-01-10 12:08:57,485 INFO L78 Accepts]: Start accepts. Automaton has 8267 states and 15347 transitions. Word has length 61 [2022-01-10 12:08:57,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:08:57,486 INFO L470 AbstractCegarLoop]: Abstraction has 8267 states and 15347 transitions. [2022-01-10 12:08:57,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 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 12:08:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 8267 states and 15347 transitions. [2022-01-10 12:08:57,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 12:08:57,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:08:57,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:08:57,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:08:57,488 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 12:08:57,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:08:57,489 INFO L85 PathProgramCache]: Analyzing trace with hash -165748034, now seen corresponding path program 1 times [2022-01-10 12:08:57,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:08:57,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145774748] [2022-01-10 12:08:57,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:08:57,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:08:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:08:57,587 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 12:08:57,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:08:57,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145774748] [2022-01-10 12:08:57,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145774748] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:08:57,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:08:57,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:08:57,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208243865] [2022-01-10 12:08:57,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:08:57,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:08:57,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:08:57,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:08:57,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:08:57,589 INFO L87 Difference]: Start difference. First operand 8267 states and 15347 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:08:57,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:08:57,857 INFO L93 Difference]: Finished difference Result 23327 states and 43374 transitions. [2022-01-10 12:08:57,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:08:57,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-01-10 12:08:57,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:08:57,898 INFO L225 Difference]: With dead ends: 23327 [2022-01-10 12:08:57,898 INFO L226 Difference]: Without dead ends: 15460 [2022-01-10 12:08:57,913 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 12:08:57,914 INFO L933 BasicCegarLoop]: 4751 mSDtfsCounter, 4628 mSDsluCounter, 3620 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4628 SdHoareTripleChecker+Valid, 8371 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:08:57,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4628 Valid, 8371 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:08:57,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15460 states. [2022-01-10 12:08:58,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15460 to 15443. [2022-01-10 12:08:58,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15443 states, 15438 states have (on average 1.857429718875502) internal successors, (28675), 15442 states have internal predecessors, (28675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:08:58,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15443 states to 15443 states and 28675 transitions. [2022-01-10 12:08:58,248 INFO L78 Accepts]: Start accepts. Automaton has 15443 states and 28675 transitions. Word has length 62 [2022-01-10 12:08:58,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:08:58,249 INFO L470 AbstractCegarLoop]: Abstraction has 15443 states and 28675 transitions. [2022-01-10 12:08:58,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:08:58,249 INFO L276 IsEmpty]: Start isEmpty. Operand 15443 states and 28675 transitions. [2022-01-10 12:08:58,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 12:08:58,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:08:58,251 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 12:08:58,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:08:58,252 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 12:08:58,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:08:58,252 INFO L85 PathProgramCache]: Analyzing trace with hash 2077853541, now seen corresponding path program 1 times [2022-01-10 12:08:58,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:08:58,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509227904] [2022-01-10 12:08:58,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:08:58,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:08:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:08:58,330 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 12:08:58,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:08:58,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509227904] [2022-01-10 12:08:58,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509227904] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:08:58,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:08:58,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:08:58,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568777947] [2022-01-10 12:08:58,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:08:58,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:08:58,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:08:58,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:08:58,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:08:58,332 INFO L87 Difference]: Start difference. First operand 15443 states and 28675 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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 12:08:59,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:08:59,205 INFO L93 Difference]: Finished difference Result 44366 states and 82430 transitions. [2022-01-10 12:08:59,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:08:59,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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 12:08:59,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:08:59,285 INFO L225 Difference]: With dead ends: 44366 [2022-01-10 12:08:59,286 INFO L226 Difference]: Without dead ends: 29324 [2022-01-10 12:08:59,317 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 12:08:59,320 INFO L933 BasicCegarLoop]: 4694 mSDtfsCounter, 4570 mSDsluCounter, 3620 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4570 SdHoareTripleChecker+Valid, 8314 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:08:59,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4570 Valid, 8314 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:08:59,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29324 states. [2022-01-10 12:09:00,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29324 to 29307. [2022-01-10 12:09:00,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29307 states, 29302 states have (on average 1.8554706163401815) internal successors, (54369), 29306 states have internal predecessors, (54369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:00,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29307 states to 29307 states and 54369 transitions. [2022-01-10 12:09:00,157 INFO L78 Accepts]: Start accepts. Automaton has 29307 states and 54369 transitions. Word has length 63 [2022-01-10 12:09:00,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:00,157 INFO L470 AbstractCegarLoop]: Abstraction has 29307 states and 54369 transitions. [2022-01-10 12:09:00,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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 12:09:00,158 INFO L276 IsEmpty]: Start isEmpty. Operand 29307 states and 54369 transitions. [2022-01-10 12:09:00,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:09:00,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:00,160 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 12:09:00,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:09:00,161 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 12:09:00,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:00,161 INFO L85 PathProgramCache]: Analyzing trace with hash -551837771, now seen corresponding path program 1 times [2022-01-10 12:09:00,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:00,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821028721] [2022-01-10 12:09:00,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:00,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:09:00,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:00,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821028721] [2022-01-10 12:09:00,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821028721] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:00,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:00,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:09:00,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403093207] [2022-01-10 12:09:00,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:00,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:09:00,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:00,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:09:00,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:09:00,259 INFO L87 Difference]: Start difference. First operand 29307 states and 54369 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 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 12:09:01,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:01,770 INFO L93 Difference]: Finished difference Result 84949 states and 157594 transitions. [2022-01-10 12:09:01,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:09:01,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 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 12:09:01,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:02,094 INFO L225 Difference]: With dead ends: 84949 [2022-01-10 12:09:02,095 INFO L226 Difference]: Without dead ends: 56044 [2022-01-10 12:09:02,191 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 12:09:02,208 INFO L933 BasicCegarLoop]: 4639 mSDtfsCounter, 4514 mSDsluCounter, 3620 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4514 SdHoareTripleChecker+Valid, 8259 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:09:02,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4514 Valid, 8259 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:09:02,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56044 states. [2022-01-10 12:09:03,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56044 to 56027. [2022-01-10 12:09:03,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56027 states, 56022 states have (on average 1.8522901717182536) internal successors, (103769), 56026 states have internal predecessors, (103769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:04,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56027 states to 56027 states and 103769 transitions. [2022-01-10 12:09:04,083 INFO L78 Accepts]: Start accepts. Automaton has 56027 states and 103769 transitions. Word has length 64 [2022-01-10 12:09:04,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:04,083 INFO L470 AbstractCegarLoop]: Abstraction has 56027 states and 103769 transitions. [2022-01-10 12:09:04,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 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 12:09:04,083 INFO L276 IsEmpty]: Start isEmpty. Operand 56027 states and 103769 transitions. [2022-01-10 12:09:04,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:09:04,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:04,085 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 12:09:04,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:09:04,085 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 12:09:04,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:04,086 INFO L85 PathProgramCache]: Analyzing trace with hash 752462233, now seen corresponding path program 1 times [2022-01-10 12:09:04,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:04,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650923782] [2022-01-10 12:09:04,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:04,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:04,147 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 12:09:04,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:04,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650923782] [2022-01-10 12:09:04,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650923782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:04,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:04,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:09:04,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472460006] [2022-01-10 12:09:04,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:04,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:09:04,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:04,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:09:04,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:09:04,149 INFO L87 Difference]: Start difference. First operand 56027 states and 103769 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 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 12:09:06,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:06,039 INFO L93 Difference]: Finished difference Result 163060 states and 301898 transitions. [2022-01-10 12:09:06,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:09:06,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 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 12:09:06,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:06,404 INFO L225 Difference]: With dead ends: 163060 [2022-01-10 12:09:06,404 INFO L226 Difference]: Without dead ends: 107436 [2022-01-10 12:09:06,482 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 12:09:06,483 INFO L933 BasicCegarLoop]: 4586 mSDtfsCounter, 4460 mSDsluCounter, 3620 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4460 SdHoareTripleChecker+Valid, 8206 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:09:06,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4460 Valid, 8206 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:09:06,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107436 states. [2022-01-10 12:09:09,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107436 to 107419. [2022-01-10 12:09:09,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107419 states, 107414 states have (on average 1.8482786228983186) internal successors, (198531), 107418 states have internal predecessors, (198531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:09,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107419 states to 107419 states and 198531 transitions. [2022-01-10 12:09:09,688 INFO L78 Accepts]: Start accepts. Automaton has 107419 states and 198531 transitions. Word has length 65 [2022-01-10 12:09:09,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:09,691 INFO L470 AbstractCegarLoop]: Abstraction has 107419 states and 198531 transitions. [2022-01-10 12:09:09,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 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 12:09:09,692 INFO L276 IsEmpty]: Start isEmpty. Operand 107419 states and 198531 transitions. [2022-01-10 12:09:09,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:09:09,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:09,701 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 12:09:09,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:09:09,703 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 12:09:09,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:09,703 INFO L85 PathProgramCache]: Analyzing trace with hash 881544952, now seen corresponding path program 1 times [2022-01-10 12:09:09,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:09,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97956674] [2022-01-10 12:09:09,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:09,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:09,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:09:09,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:09,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97956674] [2022-01-10 12:09:09,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97956674] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:09,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:09,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:09:09,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508062710] [2022-01-10 12:09:09,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:09,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:09:09,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:09,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:09:09,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:09:09,822 INFO L87 Difference]: Start difference. First operand 107419 states and 198531 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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 12:09:13,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:13,378 INFO L93 Difference]: Finished difference Result 296200 states and 546899 transitions. [2022-01-10 12:09:13,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:09:13,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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 12:09:13,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:14,241 INFO L225 Difference]: With dead ends: 296200 [2022-01-10 12:09:14,241 INFO L226 Difference]: Without dead ends: 214327 [2022-01-10 12:09:14,483 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 12:09:14,487 INFO L933 BasicCegarLoop]: 5037 mSDtfsCounter, 4539 mSDsluCounter, 3649 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4539 SdHoareTripleChecker+Valid, 8686 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:09:14,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4539 Valid, 8686 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:09:14,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214327 states. [2022-01-10 12:09:19,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214327 to 214327. [2022-01-10 12:09:19,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214327 states, 214322 states have (on average 1.84784576478383) internal successors, (396034), 214326 states have internal predecessors, (396034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:20,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214327 states to 214327 states and 396034 transitions. [2022-01-10 12:09:20,447 INFO L78 Accepts]: Start accepts. Automaton has 214327 states and 396034 transitions. Word has length 65 [2022-01-10 12:09:20,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:20,447 INFO L470 AbstractCegarLoop]: Abstraction has 214327 states and 396034 transitions. [2022-01-10 12:09:20,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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 12:09:20,448 INFO L276 IsEmpty]: Start isEmpty. Operand 214327 states and 396034 transitions. [2022-01-10 12:09:20,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 12:09:20,450 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:20,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:09:20,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:09:20,451 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:09:20,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:20,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1558104808, now seen corresponding path program 1 times [2022-01-10 12:09:20,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:20,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676902860] [2022-01-10 12:09:20,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:20,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:20,555 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 12:09:20,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:20,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676902860] [2022-01-10 12:09:20,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676902860] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:20,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:20,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:09:20,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145114079] [2022-01-10 12:09:20,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:20,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:09:20,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:20,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:09:20,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:09:20,556 INFO L87 Difference]: Start difference. First operand 214327 states and 396034 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:27,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:27,867 INFO L93 Difference]: Finished difference Result 591144 states and 1091171 transitions. [2022-01-10 12:09:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:09:27,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 12:09:27,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:29,288 INFO L225 Difference]: With dead ends: 591144 [2022-01-10 12:09:29,288 INFO L226 Difference]: Without dead ends: 427412 [2022-01-10 12:09:29,610 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 12:09:29,610 INFO L933 BasicCegarLoop]: 4563 mSDtfsCounter, 4538 mSDsluCounter, 3652 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4538 SdHoareTripleChecker+Valid, 8215 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:09:29,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4538 Valid, 8215 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:09:30,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427412 states. [2022-01-10 12:09:39,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427412 to 427410. [2022-01-10 12:09:40,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427410 states, 427405 states have (on average 1.847236227933693) internal successors, (789518), 427409 states have internal predecessors, (789518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:42,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427410 states to 427410 states and 789518 transitions. [2022-01-10 12:09:42,841 INFO L78 Accepts]: Start accepts. Automaton has 427410 states and 789518 transitions. Word has length 66 [2022-01-10 12:09:42,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:42,841 INFO L470 AbstractCegarLoop]: Abstraction has 427410 states and 789518 transitions. [2022-01-10 12:09:42,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:42,841 INFO L276 IsEmpty]: Start isEmpty. Operand 427410 states and 789518 transitions. [2022-01-10 12:09:42,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:09:42,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:42,845 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 12:09:42,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:09:42,845 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:09:42,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:42,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1056623939, now seen corresponding path program 1 times [2022-01-10 12:09:42,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:42,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031059419] [2022-01-10 12:09:42,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:42,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:42,930 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 12:09:42,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:42,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031059419] [2022-01-10 12:09:42,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031059419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:42,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:42,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:09:42,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732956531] [2022-01-10 12:09:42,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:42,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:09:42,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:42,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:09:42,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:09:42,932 INFO L87 Difference]: Start difference. First operand 427410 states and 789518 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)