/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/email_spec27_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:14:01,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:14:01,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:14:01,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:14:01,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:14:01,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:14:01,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:14:01,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:14:01,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:14:01,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:14:01,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:14:01,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:14:01,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:14:01,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:14:01,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:14:01,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:14:01,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:14:01,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:14:01,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:14:01,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:14:01,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:14:01,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:14:01,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:14:01,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:14:01,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:14:01,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:14:01,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:14:01,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:14:01,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:14:01,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:14:01,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:14:01,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:14:01,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:14:01,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:14:01,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:14:01,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:14:01,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:14:01,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:14:01,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:14:01,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:14:01,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:14:01,719 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 12:14:01,739 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:14:01,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:14:01,739 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:14:01,739 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:14:01,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:14:01,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:14:01,740 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:14:01,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:14:01,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:14:01,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:14:01,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:14:01,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:14:01,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:14:01,741 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:14:01,741 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:14:01,741 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:14:01,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:14:01,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:14:01,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:14:01,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:14:01,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:14:01,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:14:01,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:14:01,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:14:01,742 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:14:01,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:14:01,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:14:01,742 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:14:01,742 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:14:01,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:14:01,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:14:01,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:14:01,743 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:14:01,743 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:14:01,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:14:01,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:14:01,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:14:01,958 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:14:01,960 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:14:01,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product27.cil.c [2022-01-10 12:14:02,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11ff0433f/bf8b1dc6f2ed4153af4d01770285e795/FLAG3c1eeab41 [2022-01-10 12:14:02,413 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:14:02,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product27.cil.c [2022-01-10 12:14:02,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11ff0433f/bf8b1dc6f2ed4153af4d01770285e795/FLAG3c1eeab41 [2022-01-10 12:14:02,761 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11ff0433f/bf8b1dc6f2ed4153af4d01770285e795 [2022-01-10 12:14:02,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:14:02,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:14:02,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:14:02,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:14:02,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:14:02,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:14:02" (1/1) ... [2022-01-10 12:14:02,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ae5c65e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:02, skipping insertion in model container [2022-01-10 12:14:02,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:14:02" (1/1) ... [2022-01-10 12:14:02,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:14:02,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:14:03,174 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/email_spec27_product27.cil.c[57688,57701] [2022-01-10 12:14:03,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:14:03,198 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:14:03,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:14:03,282 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/email_spec27_product27.cil.c[57688,57701] [2022-01-10 12:14:03,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:14:03,313 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:14:03,389 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/email_spec27_product27.cil.c[57688,57701] [2022-01-10 12:14:03,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:14:03,432 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:14:03,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:03 WrapperNode [2022-01-10 12:14:03,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:14:03,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:14:03,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:14:03,434 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:14:03,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:03" (1/1) ... [2022-01-10 12:14:03,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:03" (1/1) ... [2022-01-10 12:14:03,586 INFO L137 Inliner]: procedures = 135, calls = 229, calls flagged for inlining = 136, calls inlined = 354, statements flattened = 5366 [2022-01-10 12:14:03,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:14:03,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:14:03,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:14:03,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:14:03,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:03" (1/1) ... [2022-01-10 12:14:03,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:03" (1/1) ... [2022-01-10 12:14:03,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:03" (1/1) ... [2022-01-10 12:14:03,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:03" (1/1) ... [2022-01-10 12:14:03,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:03" (1/1) ... [2022-01-10 12:14:03,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:03" (1/1) ... [2022-01-10 12:14:03,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:03" (1/1) ... [2022-01-10 12:14:03,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:14:03,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:14:03,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:14:03,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:14:03,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:03" (1/1) ... [2022-01-10 12:14:03,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:14:03,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:14:03,754 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 12:14:03,775 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 12:14:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:14:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:14:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:14:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:14:03,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:14:03,932 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:14:03,933 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:14:05,745 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:14:05,764 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:14:05,765 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:14:05,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:14:05 BoogieIcfgContainer [2022-01-10 12:14:05,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:14:05,768 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:14:05,768 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:14:05,769 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:14:05,771 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:14:05" (1/1) ... [2022-01-10 12:14:06,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:14:06 BasicIcfg [2022-01-10 12:14:06,161 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:14:06,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:14:06,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:14:06,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:14:06,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:14:02" (1/4) ... [2022-01-10 12:14:06,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d64330d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:14:06, skipping insertion in model container [2022-01-10 12:14:06,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:03" (2/4) ... [2022-01-10 12:14:06,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d64330d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:14:06, skipping insertion in model container [2022-01-10 12:14:06,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:14:05" (3/4) ... [2022-01-10 12:14:06,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d64330d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:14:06, skipping insertion in model container [2022-01-10 12:14:06,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:14:06" (4/4) ... [2022-01-10 12:14:06,166 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product27.cil.cTransformedIcfg [2022-01-10 12:14:06,171 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:14:06,171 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 12:14:06,216 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:14:06,221 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 12:14:06,221 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 12:14:06,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 1133 states, 1126 states have (on average 1.6767317939609236) internal successors, (1888), 1132 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:06,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 12:14:06,263 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:06,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:06,264 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:14:06,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:06,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1067416730, now seen corresponding path program 1 times [2022-01-10 12:14:06,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:06,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134188750] [2022-01-10 12:14:06,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:06,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:06,630 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 12:14:06,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:06,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134188750] [2022-01-10 12:14:06,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134188750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:06,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:06,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:14:06,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805552841] [2022-01-10 12:14:06,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:06,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:14:06,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:06,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:14:06,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:14:06,697 INFO L87 Difference]: Start difference. First operand has 1133 states, 1126 states have (on average 1.6767317939609236) internal successors, (1888), 1132 states have internal predecessors, (1888), 0 states have call successors, (0), 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 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:06,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:06,784 INFO L93 Difference]: Finished difference Result 1952 states and 3221 transitions. [2022-01-10 12:14:06,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:14:06,786 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 12:14:06,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:06,802 INFO L225 Difference]: With dead ends: 1952 [2022-01-10 12:14:06,802 INFO L226 Difference]: Without dead ends: 1013 [2022-01-10 12:14:06,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:14:06,814 INFO L933 BasicCegarLoop]: 1874 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:06,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1874 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:14:06,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-01-10 12:14:06,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1013. [2022-01-10 12:14:06,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1007 states have (on average 1.6911618669314796) internal successors, (1703), 1012 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:06,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1703 transitions. [2022-01-10 12:14:06,886 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1703 transitions. Word has length 58 [2022-01-10 12:14:06,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:06,887 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 1703 transitions. [2022-01-10 12:14:06,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:06,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1703 transitions. [2022-01-10 12:14:06,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 12:14:06,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:06,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:06,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:14:06,892 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:14:06,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:06,894 INFO L85 PathProgramCache]: Analyzing trace with hash -10033504, now seen corresponding path program 1 times [2022-01-10 12:14:06,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:06,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193367221] [2022-01-10 12:14:06,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:06,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:07,080 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 12:14:07,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:07,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193367221] [2022-01-10 12:14:07,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193367221] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:07,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:07,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:14:07,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602170794] [2022-01-10 12:14:07,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:07,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:14:07,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:07,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:14:07,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:14:07,087 INFO L87 Difference]: Start difference. First operand 1013 states and 1703 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:07,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:07,177 INFO L93 Difference]: Finished difference Result 2007 states and 3378 transitions. [2022-01-10 12:14:07,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:14:07,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-01-10 12:14:07,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:07,182 INFO L225 Difference]: With dead ends: 2007 [2022-01-10 12:14:07,183 INFO L226 Difference]: Without dead ends: 1013 [2022-01-10 12:14:07,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 12:14:07,186 INFO L933 BasicCegarLoop]: 1681 mSDtfsCounter, 1678 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1678 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:07,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1678 Valid, 1694 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:14:07,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-01-10 12:14:07,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1013. [2022-01-10 12:14:07,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1007 states have (on average 1.689175769612711) internal successors, (1701), 1012 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:07,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1701 transitions. [2022-01-10 12:14:07,231 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1701 transitions. Word has length 59 [2022-01-10 12:14:07,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:07,232 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 1701 transitions. [2022-01-10 12:14:07,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:07,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1701 transitions. [2022-01-10 12:14:07,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 12:14:07,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:07,242 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 12:14:07,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:14:07,242 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:14:07,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:07,243 INFO L85 PathProgramCache]: Analyzing trace with hash 538004640, now seen corresponding path program 1 times [2022-01-10 12:14:07,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:07,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227151514] [2022-01-10 12:14:07,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:07,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:07,416 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 12:14:07,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:07,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227151514] [2022-01-10 12:14:07,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227151514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:07,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:07,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:14:07,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63197597] [2022-01-10 12:14:07,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:07,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:14:07,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:07,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:14:07,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:07,418 INFO L87 Difference]: Start difference. First operand 1013 states and 1701 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:07,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:07,704 INFO L93 Difference]: Finished difference Result 4933 states and 8301 transitions. [2022-01-10 12:14:07,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:14:07,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 12:14:07,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:07,718 INFO L225 Difference]: With dead ends: 4933 [2022-01-10 12:14:07,718 INFO L226 Difference]: Without dead ends: 3944 [2022-01-10 12:14:07,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:14:07,739 INFO L933 BasicCegarLoop]: 3325 mSDtfsCounter, 8288 mSDsluCounter, 4975 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8288 SdHoareTripleChecker+Valid, 8300 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:07,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8288 Valid, 8300 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:07,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2022-01-10 12:14:07,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 1013. [2022-01-10 12:14:07,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1007 states have (on average 1.6881827209533267) internal successors, (1700), 1012 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:07,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1700 transitions. [2022-01-10 12:14:07,797 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1700 transitions. Word has length 61 [2022-01-10 12:14:07,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:07,798 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 1700 transitions. [2022-01-10 12:14:07,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:07,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1700 transitions. [2022-01-10 12:14:07,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 12:14:07,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:07,799 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 12:14:07,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:14:07,799 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:14:07,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:07,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1762800972, now seen corresponding path program 1 times [2022-01-10 12:14:07,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:07,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368942069] [2022-01-10 12:14:07,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:07,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:07,903 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 12:14:07,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:07,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368942069] [2022-01-10 12:14:07,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368942069] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:07,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:07,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:14:07,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294075007] [2022-01-10 12:14:07,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:07,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:14:07,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:07,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:14:07,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:14:07,905 INFO L87 Difference]: Start difference. First operand 1013 states and 1700 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 12:14:07,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:07,964 INFO L93 Difference]: Finished difference Result 2011 states and 3378 transitions. [2022-01-10 12:14:07,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:14:07,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 12:14:07,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:07,969 INFO L225 Difference]: With dead ends: 2011 [2022-01-10 12:14:07,970 INFO L226 Difference]: Without dead ends: 1027 [2022-01-10 12:14:07,971 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 12:14:07,979 INFO L933 BasicCegarLoop]: 1714 mSDtfsCounter, 1679 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:07,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1679 Valid, 1736 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:14:07,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-01-10 12:14:08,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1013. [2022-01-10 12:14:08,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1007 states have (on average 1.6871896722939423) internal successors, (1699), 1012 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:08,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1699 transitions. [2022-01-10 12:14:08,028 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1699 transitions. Word has length 62 [2022-01-10 12:14:08,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:08,028 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 1699 transitions. [2022-01-10 12:14:08,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 12:14:08,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1699 transitions. [2022-01-10 12:14:08,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 12:14:08,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:08,030 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 12:14:08,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:14:08,030 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:14:08,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:08,031 INFO L85 PathProgramCache]: Analyzing trace with hash -2047792767, now seen corresponding path program 1 times [2022-01-10 12:14:08,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:08,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442306315] [2022-01-10 12:14:08,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:08,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:08,152 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 12:14:08,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:08,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442306315] [2022-01-10 12:14:08,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442306315] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:08,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:08,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:14:08,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402401633] [2022-01-10 12:14:08,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:08,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:14:08,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:08,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:14:08,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:08,155 INFO L87 Difference]: Start difference. First operand 1013 states and 1699 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 12:14:08,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:08,326 INFO L93 Difference]: Finished difference Result 2973 states and 4997 transitions. [2022-01-10 12:14:08,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:14:08,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 12:14:08,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:08,334 INFO L225 Difference]: With dead ends: 2973 [2022-01-10 12:14:08,334 INFO L226 Difference]: Without dead ends: 1994 [2022-01-10 12:14:08,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:14:08,337 INFO L933 BasicCegarLoop]: 1708 mSDtfsCounter, 8211 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8211 SdHoareTripleChecker+Valid, 3430 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:08,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8211 Valid, 3430 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:08,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2022-01-10 12:14:08,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1013. [2022-01-10 12:14:08,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1007 states have (on average 1.6852035749751737) internal successors, (1697), 1012 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:08,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1697 transitions. [2022-01-10 12:14:08,396 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1697 transitions. Word has length 63 [2022-01-10 12:14:08,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:08,397 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 1697 transitions. [2022-01-10 12:14:08,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 12:14:08,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1697 transitions. [2022-01-10 12:14:08,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:14:08,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:08,399 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 12:14:08,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:14:08,399 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:14:08,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:08,400 INFO L85 PathProgramCache]: Analyzing trace with hash -137373666, now seen corresponding path program 1 times [2022-01-10 12:14:08,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:08,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750735884] [2022-01-10 12:14:08,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:08,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:08,512 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 12:14:08,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:08,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750735884] [2022-01-10 12:14:08,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750735884] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:08,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:08,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:14:08,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051775696] [2022-01-10 12:14:08,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:08,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:14:08,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:08,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:14:08,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:14:08,514 INFO L87 Difference]: Start difference. First operand 1013 states and 1697 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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 12:14:08,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:08,952 INFO L93 Difference]: Finished difference Result 5998 states and 10010 transitions. [2022-01-10 12:14:08,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:14:08,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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 12:14:08,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:08,971 INFO L225 Difference]: With dead ends: 5998 [2022-01-10 12:14:08,972 INFO L226 Difference]: Without dead ends: 5312 [2022-01-10 12:14:08,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:14:08,976 INFO L933 BasicCegarLoop]: 3256 mSDtfsCounter, 10697 mSDsluCounter, 10347 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10697 SdHoareTripleChecker+Valid, 13603 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:08,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10697 Valid, 13603 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:08,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5312 states. [2022-01-10 12:14:09,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5312 to 1719. [2022-01-10 12:14:09,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1713 states have (on average 1.6865148861646235) internal successors, (2889), 1718 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:09,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2889 transitions. [2022-01-10 12:14:09,108 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2889 transitions. Word has length 65 [2022-01-10 12:14:09,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:09,110 INFO L470 AbstractCegarLoop]: Abstraction has 1719 states and 2889 transitions. [2022-01-10 12:14:09,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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 12:14:09,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2889 transitions. [2022-01-10 12:14:09,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 12:14:09,111 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:09,112 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 12:14:09,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:14:09,112 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:14:09,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:09,112 INFO L85 PathProgramCache]: Analyzing trace with hash 501686971, now seen corresponding path program 1 times [2022-01-10 12:14:09,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:09,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763056989] [2022-01-10 12:14:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:09,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:09,231 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 12:14:09,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:09,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763056989] [2022-01-10 12:14:09,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763056989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:09,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:09,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:14:09,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41198570] [2022-01-10 12:14:09,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:09,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:14:09,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:09,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:14:09,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:09,233 INFO L87 Difference]: Start difference. First operand 1719 states and 2889 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:09,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:09,410 INFO L93 Difference]: Finished difference Result 3101 states and 5162 transitions. [2022-01-10 12:14:09,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:14:09,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 12:14:09,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:09,417 INFO L225 Difference]: With dead ends: 3101 [2022-01-10 12:14:09,417 INFO L226 Difference]: Without dead ends: 2008 [2022-01-10 12:14:09,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:14:09,420 INFO L933 BasicCegarLoop]: 1679 mSDtfsCounter, 4915 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4915 SdHoareTripleChecker+Valid, 3231 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:09,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4915 Valid, 3231 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:14:09,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2022-01-10 12:14:09,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 1719. [2022-01-10 12:14:09,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1713 states have (on average 1.684179801517805) internal successors, (2885), 1718 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:09,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2885 transitions. [2022-01-10 12:14:09,532 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2885 transitions. Word has length 66 [2022-01-10 12:14:09,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:09,533 INFO L470 AbstractCegarLoop]: Abstraction has 1719 states and 2885 transitions. [2022-01-10 12:14:09,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:09,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2885 transitions. [2022-01-10 12:14:09,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 12:14:09,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:09,534 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 12:14:09,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:14:09,535 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:14:09,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:09,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1433560070, now seen corresponding path program 1 times [2022-01-10 12:14:09,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:09,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763322741] [2022-01-10 12:14:09,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:09,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:09,600 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 12:14:09,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:09,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763322741] [2022-01-10 12:14:09,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763322741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:09,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:09,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:14:09,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282928642] [2022-01-10 12:14:09,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:09,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:14:09,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:09,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:14:09,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:09,601 INFO L87 Difference]: Start difference. First operand 1719 states and 2885 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:09,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:09,873 INFO L93 Difference]: Finished difference Result 5034 states and 8484 transitions. [2022-01-10 12:14:09,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:14:09,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 12:14:09,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:09,883 INFO L225 Difference]: With dead ends: 5034 [2022-01-10 12:14:09,883 INFO L226 Difference]: Without dead ends: 3352 [2022-01-10 12:14:09,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:14:09,886 INFO L933 BasicCegarLoop]: 3293 mSDtfsCounter, 5022 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5022 SdHoareTripleChecker+Valid, 4941 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:09,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5022 Valid, 4941 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:14:09,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3352 states. [2022-01-10 12:14:09,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3352 to 1719. [2022-01-10 12:14:09,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1713 states have (on average 1.683012259194396) internal successors, (2883), 1718 states have internal predecessors, (2883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:09,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2883 transitions. [2022-01-10 12:14:09,995 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2883 transitions. Word has length 66 [2022-01-10 12:14:09,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:09,995 INFO L470 AbstractCegarLoop]: Abstraction has 1719 states and 2883 transitions. [2022-01-10 12:14:09,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:09,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2883 transitions. [2022-01-10 12:14:09,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:14:09,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:09,997 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 12:14:09,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:14:09,997 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:14:09,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:09,997 INFO L85 PathProgramCache]: Analyzing trace with hash -541873622, now seen corresponding path program 1 times [2022-01-10 12:14:09,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:09,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439768514] [2022-01-10 12:14:09,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:09,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:10,103 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 12:14:10,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:10,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439768514] [2022-01-10 12:14:10,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439768514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:10,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:10,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:14:10,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953783834] [2022-01-10 12:14:10,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:10,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:14:10,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:10,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:14:10,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:14:10,106 INFO L87 Difference]: Start difference. First operand 1719 states and 2883 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:10,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:10,236 INFO L93 Difference]: Finished difference Result 2580 states and 4272 transitions. [2022-01-10 12:14:10,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:14:10,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 12:14:10,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:10,244 INFO L225 Difference]: With dead ends: 2580 [2022-01-10 12:14:10,244 INFO L226 Difference]: Without dead ends: 1719 [2022-01-10 12:14:10,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:10,248 INFO L933 BasicCegarLoop]: 1671 mSDtfsCounter, 2062 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 2961 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:10,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2062 Valid, 2961 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:14:10,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2022-01-10 12:14:10,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1719. [2022-01-10 12:14:10,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1713 states have (on average 1.6777583187390543) internal successors, (2874), 1718 states have internal predecessors, (2874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:10,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2874 transitions. [2022-01-10 12:14:10,367 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2874 transitions. Word has length 67 [2022-01-10 12:14:10,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:10,368 INFO L470 AbstractCegarLoop]: Abstraction has 1719 states and 2874 transitions. [2022-01-10 12:14:10,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:10,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2874 transitions. [2022-01-10 12:14:10,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 12:14:10,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:10,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:10,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:14:10,370 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:14:10,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:10,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1996210556, now seen corresponding path program 1 times [2022-01-10 12:14:10,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:10,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407372716] [2022-01-10 12:14:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:10,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:10,508 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 12:14:10,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:10,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407372716] [2022-01-10 12:14:10,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407372716] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:10,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:10,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 12:14:10,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638882062] [2022-01-10 12:14:10,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:10,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:14:10,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:10,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:14:10,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:14:10,510 INFO L87 Difference]: Start difference. First operand 1719 states and 2874 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:12,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:12,680 INFO L93 Difference]: Finished difference Result 11054 states and 17554 transitions. [2022-01-10 12:14:12,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-10 12:14:12,681 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 12:14:12,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:12,709 INFO L225 Difference]: With dead ends: 11054 [2022-01-10 12:14:12,709 INFO L226 Difference]: Without dead ends: 10253 [2022-01-10 12:14:12,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=537, Invalid=1533, Unknown=0, NotChecked=0, Total=2070 [2022-01-10 12:14:12,715 INFO L933 BasicCegarLoop]: 4179 mSDtfsCounter, 16765 mSDsluCounter, 23323 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16765 SdHoareTripleChecker+Valid, 27502 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:12,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16765 Valid, 27502 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 12:14:12,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10253 states. [2022-01-10 12:14:12,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10253 to 3077. [2022-01-10 12:14:12,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3077 states, 3071 states have (on average 1.660045587756431) internal successors, (5098), 3076 states have internal predecessors, (5098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:12,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 5098 transitions. [2022-01-10 12:14:12,985 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 5098 transitions. Word has length 70 [2022-01-10 12:14:12,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:12,986 INFO L470 AbstractCegarLoop]: Abstraction has 3077 states and 5098 transitions. [2022-01-10 12:14:12,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:12,986 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 5098 transitions. [2022-01-10 12:14:12,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 12:14:12,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:12,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:12,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:14:12,988 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:14:12,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:12,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1722434836, now seen corresponding path program 1 times [2022-01-10 12:14:12,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:12,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899103949] [2022-01-10 12:14:12,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:12,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:13,081 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 12:14:13,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:13,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899103949] [2022-01-10 12:14:13,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899103949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:13,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:13,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:14:13,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630213202] [2022-01-10 12:14:13,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:13,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:14:13,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:13,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:14:13,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:13,083 INFO L87 Difference]: Start difference. First operand 3077 states and 5098 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:14,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:14,406 INFO L93 Difference]: Finished difference Result 14285 states and 22954 transitions. [2022-01-10 12:14:14,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:14:14,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 12:14:14,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:14,439 INFO L225 Difference]: With dead ends: 14285 [2022-01-10 12:14:14,439 INFO L226 Difference]: Without dead ends: 12482 [2022-01-10 12:14:14,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:14:14,446 INFO L933 BasicCegarLoop]: 1669 mSDtfsCounter, 7571 mSDsluCounter, 5358 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7571 SdHoareTripleChecker+Valid, 7027 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:14,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7571 Valid, 7027 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:14,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12482 states. [2022-01-10 12:14:14,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12482 to 4932. [2022-01-10 12:14:14,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4932 states, 4926 states have (on average 1.634997969955339) internal successors, (8054), 4931 states have internal predecessors, (8054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:14,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4932 states to 4932 states and 8054 transitions. [2022-01-10 12:14:14,900 INFO L78 Accepts]: Start accepts. Automaton has 4932 states and 8054 transitions. Word has length 71 [2022-01-10 12:14:14,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:14,900 INFO L470 AbstractCegarLoop]: Abstraction has 4932 states and 8054 transitions. [2022-01-10 12:14:14,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:14,900 INFO L276 IsEmpty]: Start isEmpty. Operand 4932 states and 8054 transitions. [2022-01-10 12:14:14,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:14:14,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:14,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:14,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:14:14,903 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:14:14,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:14,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1625543974, now seen corresponding path program 1 times [2022-01-10 12:14:14,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:14,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053261389] [2022-01-10 12:14:14,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:14,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:15,067 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 12:14:15,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:15,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053261389] [2022-01-10 12:14:15,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053261389] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:15,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:15,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 12:14:15,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522166857] [2022-01-10 12:14:15,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:15,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:14:15,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:15,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:14:15,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:14:15,069 INFO L87 Difference]: Start difference. First operand 4932 states and 8054 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:16,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:16,081 INFO L93 Difference]: Finished difference Result 10220 states and 16494 transitions. [2022-01-10 12:14:16,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 12:14:16,081 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 12:14:16,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:16,092 INFO L225 Difference]: With dead ends: 10220 [2022-01-10 12:14:16,092 INFO L226 Difference]: Without dead ends: 6634 [2022-01-10 12:14:16,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2022-01-10 12:14:16,097 INFO L933 BasicCegarLoop]: 1734 mSDtfsCounter, 8301 mSDsluCounter, 7923 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8301 SdHoareTripleChecker+Valid, 9657 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:16,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8301 Valid, 9657 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:16,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6634 states. [2022-01-10 12:14:16,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6634 to 4668. [2022-01-10 12:14:16,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4668 states, 4662 states have (on average 1.6233376233376233) internal successors, (7568), 4667 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:16,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4668 states to 4668 states and 7568 transitions. [2022-01-10 12:14:16,583 INFO L78 Accepts]: Start accepts. Automaton has 4668 states and 7568 transitions. Word has length 72 [2022-01-10 12:14:16,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:16,583 INFO L470 AbstractCegarLoop]: Abstraction has 4668 states and 7568 transitions. [2022-01-10 12:14:16,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:16,584 INFO L276 IsEmpty]: Start isEmpty. Operand 4668 states and 7568 transitions. [2022-01-10 12:14:16,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 12:14:16,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:16,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:16,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:14:16,589 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:14:16,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:16,590 INFO L85 PathProgramCache]: Analyzing trace with hash 393071510, now seen corresponding path program 1 times [2022-01-10 12:14:16,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:16,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459162531] [2022-01-10 12:14:16,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:16,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:16,702 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 12:14:16,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:16,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459162531] [2022-01-10 12:14:16,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459162531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:16,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:16,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:14:16,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191586057] [2022-01-10 12:14:16,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:16,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:14:16,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:16,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:14:16,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:14:16,703 INFO L87 Difference]: Start difference. First operand 4668 states and 7568 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:19,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:19,899 INFO L93 Difference]: Finished difference Result 19731 states and 30787 transitions. [2022-01-10 12:14:19,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-10 12:14:19,900 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 12:14:19,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:19,926 INFO L225 Difference]: With dead ends: 19731 [2022-01-10 12:14:19,926 INFO L226 Difference]: Without dead ends: 16485 [2022-01-10 12:14:19,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=336, Invalid=854, Unknown=0, NotChecked=0, Total=1190 [2022-01-10 12:14:19,934 INFO L933 BasicCegarLoop]: 3869 mSDtfsCounter, 13629 mSDsluCounter, 18233 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13629 SdHoareTripleChecker+Valid, 22102 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:19,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13629 Valid, 22102 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 12:14:19,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16485 states. [2022-01-10 12:14:20,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16485 to 4640. [2022-01-10 12:14:20,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4640 states, 4634 states have (on average 1.6180405697022011) internal successors, (7498), 4639 states have internal predecessors, (7498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:20,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4640 states to 4640 states and 7498 transitions. [2022-01-10 12:14:20,455 INFO L78 Accepts]: Start accepts. Automaton has 4640 states and 7498 transitions. Word has length 85 [2022-01-10 12:14:20,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:20,455 INFO L470 AbstractCegarLoop]: Abstraction has 4640 states and 7498 transitions. [2022-01-10 12:14:20,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:20,455 INFO L276 IsEmpty]: Start isEmpty. Operand 4640 states and 7498 transitions. [2022-01-10 12:14:20,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 12:14:20,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:20,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:20,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:14:20,458 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:14:20,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:20,459 INFO L85 PathProgramCache]: Analyzing trace with hash 147028445, now seen corresponding path program 1 times [2022-01-10 12:14:20,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:20,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582003149] [2022-01-10 12:14:20,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:20,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:20,562 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 12:14:20,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:20,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582003149] [2022-01-10 12:14:20,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582003149] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:20,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:20,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:14:20,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691123333] [2022-01-10 12:14:20,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:20,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:14:20,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:20,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:14:20,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:14:20,563 INFO L87 Difference]: Start difference. First operand 4640 states and 7498 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:21,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:21,473 INFO L93 Difference]: Finished difference Result 9990 states and 15935 transitions. [2022-01-10 12:14:21,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 12:14:21,479 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 12:14:21,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:21,517 INFO L225 Difference]: With dead ends: 9990 [2022-01-10 12:14:21,518 INFO L226 Difference]: Without dead ends: 6166 [2022-01-10 12:14:21,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-01-10 12:14:21,523 INFO L933 BasicCegarLoop]: 1659 mSDtfsCounter, 6833 mSDsluCounter, 5336 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6833 SdHoareTripleChecker+Valid, 6995 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:21,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6833 Valid, 6995 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:21,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6166 states. [2022-01-10 12:14:22,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6166 to 4640. [2022-01-10 12:14:22,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4640 states, 4634 states have (on average 1.6137246439361244) internal successors, (7478), 4639 states have internal predecessors, (7478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:22,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4640 states to 4640 states and 7478 transitions. [2022-01-10 12:14:22,012 INFO L78 Accepts]: Start accepts. Automaton has 4640 states and 7478 transitions. Word has length 85 [2022-01-10 12:14:22,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:22,012 INFO L470 AbstractCegarLoop]: Abstraction has 4640 states and 7478 transitions. [2022-01-10 12:14:22,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:22,012 INFO L276 IsEmpty]: Start isEmpty. Operand 4640 states and 7478 transitions. [2022-01-10 12:14:22,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 12:14:22,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:22,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:22,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:14:22,015 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:14:22,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:22,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1863075396, now seen corresponding path program 1 times [2022-01-10 12:14:22,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:22,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648384262] [2022-01-10 12:14:22,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:22,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:22,097 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 12:14:22,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:22,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648384262] [2022-01-10 12:14:22,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648384262] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:22,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:22,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:14:22,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217090043] [2022-01-10 12:14:22,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:22,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:14:22,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:22,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:14:22,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:22,099 INFO L87 Difference]: Start difference. First operand 4640 states and 7478 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:24,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:24,931 INFO L93 Difference]: Finished difference Result 22164 states and 34690 transitions. [2022-01-10 12:14:24,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:14:24,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 12:14:24,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:24,959 INFO L225 Difference]: With dead ends: 22164 [2022-01-10 12:14:24,959 INFO L226 Difference]: Without dead ends: 18454 [2022-01-10 12:14:24,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:14:24,968 INFO L933 BasicCegarLoop]: 1694 mSDtfsCounter, 6715 mSDsluCounter, 5314 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6715 SdHoareTripleChecker+Valid, 7008 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:24,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6715 Valid, 7008 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:24,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18454 states. [2022-01-10 12:14:26,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18454 to 8446. [2022-01-10 12:14:26,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8446 states, 8440 states have (on average 1.5950236966824645) internal successors, (13462), 8445 states have internal predecessors, (13462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:26,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8446 states to 8446 states and 13462 transitions. [2022-01-10 12:14:26,057 INFO L78 Accepts]: Start accepts. Automaton has 8446 states and 13462 transitions. Word has length 85 [2022-01-10 12:14:26,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:26,058 INFO L470 AbstractCegarLoop]: Abstraction has 8446 states and 13462 transitions. [2022-01-10 12:14:26,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:26,058 INFO L276 IsEmpty]: Start isEmpty. Operand 8446 states and 13462 transitions. [2022-01-10 12:14:26,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 12:14:26,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:26,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:26,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:14:26,063 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:14:26,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:26,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1121995867, now seen corresponding path program 1 times [2022-01-10 12:14:26,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:26,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220996108] [2022-01-10 12:14:26,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:26,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:26,143 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 12:14:26,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:26,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220996108] [2022-01-10 12:14:26,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220996108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:26,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:26,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:14:26,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085779905] [2022-01-10 12:14:26,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:26,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:14:26,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:26,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:14:26,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:26,146 INFO L87 Difference]: Start difference. First operand 8446 states and 13462 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:29,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:29,953 INFO L93 Difference]: Finished difference Result 30950 states and 48413 transitions. [2022-01-10 12:14:29,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:14:29,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-01-10 12:14:29,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:29,987 INFO L225 Difference]: With dead ends: 30950 [2022-01-10 12:14:29,987 INFO L226 Difference]: Without dead ends: 23742 [2022-01-10 12:14:29,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:14:29,997 INFO L933 BasicCegarLoop]: 2316 mSDtfsCounter, 5451 mSDsluCounter, 5330 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5451 SdHoareTripleChecker+Valid, 7646 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:29,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5451 Valid, 7646 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:14:30,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23742 states. [2022-01-10 12:14:31,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23742 to 10740. [2022-01-10 12:14:31,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10740 states, 10734 states have (on average 1.5905533817775293) internal successors, (17073), 10739 states have internal predecessors, (17073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:31,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10740 states to 10740 states and 17073 transitions. [2022-01-10 12:14:31,565 INFO L78 Accepts]: Start accepts. Automaton has 10740 states and 17073 transitions. Word has length 86 [2022-01-10 12:14:31,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:31,565 INFO L470 AbstractCegarLoop]: Abstraction has 10740 states and 17073 transitions. [2022-01-10 12:14:31,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:31,566 INFO L276 IsEmpty]: Start isEmpty. Operand 10740 states and 17073 transitions. [2022-01-10 12:14:31,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 12:14:31,572 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:31,572 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:31,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:14:31,572 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:14:31,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:31,573 INFO L85 PathProgramCache]: Analyzing trace with hash -892179592, now seen corresponding path program 1 times [2022-01-10 12:14:31,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:31,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200556543] [2022-01-10 12:14:31,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:31,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:31,671 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 12:14:31,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:31,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200556543] [2022-01-10 12:14:31,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200556543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:31,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:31,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:14:31,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786201692] [2022-01-10 12:14:31,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:31,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:14:31,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:31,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:14:31,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:31,672 INFO L87 Difference]: Start difference. First operand 10740 states and 17073 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:38,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:38,420 INFO L93 Difference]: Finished difference Result 45659 states and 70910 transitions. [2022-01-10 12:14:38,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:14:38,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-10 12:14:38,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:38,480 INFO L225 Difference]: With dead ends: 45659 [2022-01-10 12:14:38,480 INFO L226 Difference]: Without dead ends: 37963 [2022-01-10 12:14:38,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:14:38,494 INFO L933 BasicCegarLoop]: 3708 mSDtfsCounter, 3398 mSDsluCounter, 7645 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3398 SdHoareTripleChecker+Valid, 11353 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:38,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3398 Valid, 11353 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:14:38,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37963 states. [2022-01-10 12:14:40,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37963 to 11112. [2022-01-10 12:14:40,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11112 states, 11106 states have (on average 1.5718530524041059) internal successors, (17457), 11111 states have internal predecessors, (17457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:40,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11112 states to 11112 states and 17457 transitions. [2022-01-10 12:14:40,280 INFO L78 Accepts]: Start accepts. Automaton has 11112 states and 17457 transitions. Word has length 87 [2022-01-10 12:14:40,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:40,280 INFO L470 AbstractCegarLoop]: Abstraction has 11112 states and 17457 transitions. [2022-01-10 12:14:40,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:40,280 INFO L276 IsEmpty]: Start isEmpty. Operand 11112 states and 17457 transitions. [2022-01-10 12:14:40,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 12:14:40,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:40,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:40,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:14:40,286 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:14:40,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:40,286 INFO L85 PathProgramCache]: Analyzing trace with hash 266207763, now seen corresponding path program 1 times [2022-01-10 12:14:40,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:40,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217457973] [2022-01-10 12:14:40,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:40,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:40,342 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 12:14:40,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:40,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217457973] [2022-01-10 12:14:40,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217457973] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:40,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:40,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:14:40,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110806922] [2022-01-10 12:14:40,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:40,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:14:40,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:40,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:14:40,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:14:40,343 INFO L87 Difference]: Start difference. First operand 11112 states and 17457 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:42,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:42,714 INFO L93 Difference]: Finished difference Result 20924 states and 32655 transitions. [2022-01-10 12:14:42,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:14:42,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-10 12:14:42,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:42,739 INFO L225 Difference]: With dead ends: 20924 [2022-01-10 12:14:42,740 INFO L226 Difference]: Without dead ends: 15860 [2022-01-10 12:14:42,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:42,749 INFO L933 BasicCegarLoop]: 1672 mSDtfsCounter, 3112 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3112 SdHoareTripleChecker+Valid, 3646 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:42,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3112 Valid, 3646 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:42,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15860 states. [2022-01-10 12:14:44,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15860 to 11112. [2022-01-10 12:14:44,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11112 states, 11106 states have (on average 1.5716729695660003) internal successors, (17455), 11111 states have internal predecessors, (17455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:44,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11112 states to 11112 states and 17455 transitions. [2022-01-10 12:14:44,382 INFO L78 Accepts]: Start accepts. Automaton has 11112 states and 17455 transitions. Word has length 87 [2022-01-10 12:14:44,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:44,382 INFO L470 AbstractCegarLoop]: Abstraction has 11112 states and 17455 transitions. [2022-01-10 12:14:44,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:44,383 INFO L276 IsEmpty]: Start isEmpty. Operand 11112 states and 17455 transitions. [2022-01-10 12:14:44,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 12:14:44,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:44,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:44,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:14:44,388 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:14:44,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:44,388 INFO L85 PathProgramCache]: Analyzing trace with hash 25667634, now seen corresponding path program 1 times [2022-01-10 12:14:44,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:44,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501402385] [2022-01-10 12:14:44,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:44,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:44,467 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 12:14:44,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:44,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501402385] [2022-01-10 12:14:44,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501402385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:44,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:44,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:14:44,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323633999] [2022-01-10 12:14:44,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:44,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:14:44,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:44,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:14:44,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:14:44,470 INFO L87 Difference]: Start difference. First operand 11112 states and 17455 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:54,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:54,128 INFO L93 Difference]: Finished difference Result 53781 states and 82927 transitions. [2022-01-10 12:14:54,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:14:54,130 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-10 12:14:54,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:54,210 INFO L225 Difference]: With dead ends: 53781 [2022-01-10 12:14:54,210 INFO L226 Difference]: Without dead ends: 49887 [2022-01-10 12:14:54,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-01-10 12:14:54,230 INFO L933 BasicCegarLoop]: 5266 mSDtfsCounter, 5558 mSDsluCounter, 13468 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5558 SdHoareTripleChecker+Valid, 18734 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:54,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5558 Valid, 18734 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 12:14:54,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49887 states. [2022-01-10 12:14:56,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49887 to 14676. [2022-01-10 12:14:56,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14676 states, 14670 states have (on average 1.565098841172461) internal successors, (22960), 14675 states have internal predecessors, (22960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:56,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14676 states to 14676 states and 22960 transitions. [2022-01-10 12:14:56,810 INFO L78 Accepts]: Start accepts. Automaton has 14676 states and 22960 transitions. Word has length 87 [2022-01-10 12:14:56,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:56,810 INFO L470 AbstractCegarLoop]: Abstraction has 14676 states and 22960 transitions. [2022-01-10 12:14:56,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:56,811 INFO L276 IsEmpty]: Start isEmpty. Operand 14676 states and 22960 transitions. [2022-01-10 12:14:56,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 12:14:56,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:56,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:56,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 12:14:56,816 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:14:56,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:56,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1971157077, now seen corresponding path program 1 times [2022-01-10 12:14:56,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:56,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025090242] [2022-01-10 12:14:56,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:56,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:56,927 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 12:14:56,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:56,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025090242] [2022-01-10 12:14:56,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025090242] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:56,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:56,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:14:56,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98362853] [2022-01-10 12:14:56,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:56,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:14:56,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:56,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:14:56,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:14:56,929 INFO L87 Difference]: Start difference. First operand 14676 states and 22960 transitions. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)