/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_spec7_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:19:30,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:19:30,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:19:30,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:19:30,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:19:30,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:19:30,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:19:30,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:19:30,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:19:30,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:19:30,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:19:30,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:19:30,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:19:30,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:19:30,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:19:30,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:19:30,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:19:30,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:19:30,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:19:30,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:19:30,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:19:30,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:19:30,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:19:30,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:19:30,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:19:30,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:19:30,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:19:30,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:19:30,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:19:30,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:19:30,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:19:30,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:19:30,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:19:30,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:19:30,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:19:30,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:19:30,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:19:30,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:19:30,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:19:30,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:19:30,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:19:30,951 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 12:19:30,976 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:19:30,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:19:30,976 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:19:30,976 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:19:30,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:19:30,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:19:30,977 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:19:30,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:19:30,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:19:30,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:19:30,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:19:30,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:19:30,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:19:30,978 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:19:30,978 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:19:30,978 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:19:30,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:19:30,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:19:30,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:19:30,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:19:30,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:19:30,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:19:30,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:19:30,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:19:30,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:19:30,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:19:30,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:19:30,979 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:19:30,979 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:19:30,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:19:30,979 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:19:30,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:19:30,980 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:19:30,980 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:19:31,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:19:31,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:19:31,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:19:31,180 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:19:31,181 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:19:31,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec7_product28.cil.c [2022-01-10 12:19:31,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51d9c2467/2c145df0956e421ea01bc44a98473c11/FLAG8af1a7af2 [2022-01-10 12:19:31,648 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:19:31,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product28.cil.c [2022-01-10 12:19:31,661 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51d9c2467/2c145df0956e421ea01bc44a98473c11/FLAG8af1a7af2 [2022-01-10 12:19:31,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51d9c2467/2c145df0956e421ea01bc44a98473c11 [2022-01-10 12:19:31,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:19:31,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:19:31,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:19:31,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:19:31,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:19:31,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:19:31" (1/1) ... [2022-01-10 12:19:31,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61458006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:31, skipping insertion in model container [2022-01-10 12:19:31,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:19:31" (1/1) ... [2022-01-10 12:19:31,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:19:31,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:19:31,933 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_spec7_product28.cil.c[1542,1555] [2022-01-10 12:19:32,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:19:32,204 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:19:32,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:19:32,214 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_spec7_product28.cil.c[1542,1555] [2022-01-10 12:19:32,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:19:32,310 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:19:32,326 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_spec7_product28.cil.c[1542,1555] [2022-01-10 12:19:32,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:19:32,416 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:19:32,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:32 WrapperNode [2022-01-10 12:19:32,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:19:32,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:19:32,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:19:32,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:19:32,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:32" (1/1) ... [2022-01-10 12:19:32,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:32" (1/1) ... [2022-01-10 12:19:32,520 INFO L137 Inliner]: procedures = 130, calls = 205, calls flagged for inlining = 120, calls inlined = 147, statements flattened = 2211 [2022-01-10 12:19:32,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:19:32,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:19:32,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:19:32,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:19:32,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:32" (1/1) ... [2022-01-10 12:19:32,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:32" (1/1) ... [2022-01-10 12:19:32,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:32" (1/1) ... [2022-01-10 12:19:32,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:32" (1/1) ... [2022-01-10 12:19:32,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:32" (1/1) ... [2022-01-10 12:19:32,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:32" (1/1) ... [2022-01-10 12:19:32,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:32" (1/1) ... [2022-01-10 12:19:32,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:19:32,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:19:32,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:19:32,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:19:32,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:32" (1/1) ... [2022-01-10 12:19:32,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:19:32,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:19:32,637 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 12:19:32,642 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 12:19:32,675 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:19:32,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:19:32,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:19:32,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:19:32,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:19:32,898 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:19:32,899 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:19:33,855 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:19:33,883 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:19:33,883 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:19:33,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:19:33 BoogieIcfgContainer [2022-01-10 12:19:33,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:19:33,886 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:19:33,886 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:19:33,887 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:19:33,888 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:19:33" (1/1) ... [2022-01-10 12:19:34,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:19:34 BasicIcfg [2022-01-10 12:19:34,179 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:19:34,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:19:34,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:19:34,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:19:34,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:19:31" (1/4) ... [2022-01-10 12:19:34,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71627d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:19:34, skipping insertion in model container [2022-01-10 12:19:34,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:32" (2/4) ... [2022-01-10 12:19:34,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71627d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:19:34, skipping insertion in model container [2022-01-10 12:19:34,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:19:33" (3/4) ... [2022-01-10 12:19:34,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71627d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:19:34, skipping insertion in model container [2022-01-10 12:19:34,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:19:34" (4/4) ... [2022-01-10 12:19:34,185 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product28.cil.cTransformedIcfg [2022-01-10 12:19:34,188 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:19:34,188 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 12:19:34,231 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:19:34,236 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 12:19:34,236 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 12:19:34,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 517 states, 514 states have (on average 1.6945525291828794) internal successors, (871), 516 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:34,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 12:19:34,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:34,274 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 12:19:34,274 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:19:34,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:34,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1172325908, now seen corresponding path program 1 times [2022-01-10 12:19:34,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:34,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252228051] [2022-01-10 12:19:34,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:34,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:34,527 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 12:19:34,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:34,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252228051] [2022-01-10 12:19:34,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252228051] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:34,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:34,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:19:34,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893930356] [2022-01-10 12:19:34,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:34,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:19:34,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:34,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:19:34,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:19:34,551 INFO L87 Difference]: Start difference. First operand has 517 states, 514 states have (on average 1.6945525291828794) internal successors, (871), 516 states have internal predecessors, (871), 0 states have call successors, (0), 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 29.5) internal successors, (59), 2 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 12:19:34,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:34,598 INFO L93 Difference]: Finished difference Result 778 states and 1290 transitions. [2022-01-10 12:19:34,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:19:34,604 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 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 12:19:34,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:34,618 INFO L225 Difference]: With dead ends: 778 [2022-01-10 12:19:34,618 INFO L226 Difference]: Without dead ends: 463 [2022-01-10 12:19:34,623 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 12:19:34,625 INFO L933 BasicCegarLoop]: 865 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, 865 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 12:19:34,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:19:34,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-01-10 12:19:34,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2022-01-10 12:19:34,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 461 states have (on average 1.702819956616052) internal successors, (785), 462 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:34,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 785 transitions. [2022-01-10 12:19:34,689 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 785 transitions. Word has length 59 [2022-01-10 12:19:34,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:34,689 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 785 transitions. [2022-01-10 12:19:34,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 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 12:19:34,690 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 785 transitions. [2022-01-10 12:19:34,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 12:19:34,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:34,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:34,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:19:34,694 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:19:34,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:34,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1320092312, now seen corresponding path program 1 times [2022-01-10 12:19:34,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:34,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795036520] [2022-01-10 12:19:34,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:34,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:34,929 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 12:19:34,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:34,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795036520] [2022-01-10 12:19:34,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795036520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:34,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:34,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:19:34,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660903360] [2022-01-10 12:19:34,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:34,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:19:34,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:34,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:19:34,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:19:34,932 INFO L87 Difference]: Start difference. First operand 463 states and 785 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:34,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:34,990 INFO L93 Difference]: Finished difference Result 907 states and 1542 transitions. [2022-01-10 12:19:34,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:19:34,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 12:19:34,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:34,992 INFO L225 Difference]: With dead ends: 907 [2022-01-10 12:19:34,992 INFO L226 Difference]: Without dead ends: 463 [2022-01-10 12:19:34,993 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 12:19:34,994 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 760 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:34,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 780 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:19:34,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-01-10 12:19:35,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2022-01-10 12:19:35,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 461 states have (on average 1.6984815618221258) internal successors, (783), 462 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:35,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 783 transitions. [2022-01-10 12:19:35,081 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 783 transitions. Word has length 60 [2022-01-10 12:19:35,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:35,082 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 783 transitions. [2022-01-10 12:19:35,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:35,082 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 783 transitions. [2022-01-10 12:19:35,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 12:19:35,083 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:35,083 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 12:19:35,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:19:35,083 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:19:35,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:35,084 INFO L85 PathProgramCache]: Analyzing trace with hash -2061744936, now seen corresponding path program 1 times [2022-01-10 12:19:35,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:35,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992229266] [2022-01-10 12:19:35,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:35,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:35,221 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 12:19:35,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:35,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992229266] [2022-01-10 12:19:35,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992229266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:35,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:35,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:19:35,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417732628] [2022-01-10 12:19:35,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:35,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:19:35,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:35,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:19:35,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:19:35,225 INFO L87 Difference]: Start difference. First operand 463 states and 783 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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 12:19:35,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:35,401 INFO L93 Difference]: Finished difference Result 2183 states and 3711 transitions. [2022-01-10 12:19:35,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:19:35,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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 12:19:35,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:35,408 INFO L225 Difference]: With dead ends: 2183 [2022-01-10 12:19:35,408 INFO L226 Difference]: Without dead ends: 1744 [2022-01-10 12:19:35,412 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 12:19:35,414 INFO L933 BasicCegarLoop]: 1489 mSDtfsCounter, 3698 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3698 SdHoareTripleChecker+Valid, 3710 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 12:19:35,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3698 Valid, 3710 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:19:35,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2022-01-10 12:19:35,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 463. [2022-01-10 12:19:35,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 461 states have (on average 1.6963123644251628) internal successors, (782), 462 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:35,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 782 transitions. [2022-01-10 12:19:35,443 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 782 transitions. Word has length 62 [2022-01-10 12:19:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:35,443 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 782 transitions. [2022-01-10 12:19:35,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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 12:19:35,444 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 782 transitions. [2022-01-10 12:19:35,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 12:19:35,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:35,445 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 12:19:35,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:19:35,445 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:19:35,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:35,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1945239442, now seen corresponding path program 1 times [2022-01-10 12:19:35,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:35,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572912221] [2022-01-10 12:19:35,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:35,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:35,575 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 12:19:35,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:35,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572912221] [2022-01-10 12:19:35,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572912221] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:35,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:35,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:19:35,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105709091] [2022-01-10 12:19:35,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:35,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:19:35,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:35,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:19:35,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:19:35,578 INFO L87 Difference]: Start difference. First operand 463 states and 782 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 12:19:35,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:35,633 INFO L93 Difference]: Finished difference Result 911 states and 1542 transitions. [2022-01-10 12:19:35,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:19:35,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 12:19:35,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:35,636 INFO L225 Difference]: With dead ends: 911 [2022-01-10 12:19:35,636 INFO L226 Difference]: Without dead ends: 477 [2022-01-10 12:19:35,637 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 12:19:35,644 INFO L933 BasicCegarLoop]: 796 mSDtfsCounter, 761 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 818 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 12:19:35,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [761 Valid, 818 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:19:35,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-01-10 12:19:35,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 463. [2022-01-10 12:19:35,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 461 states have (on average 1.6941431670281997) internal successors, (781), 462 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:35,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 781 transitions. [2022-01-10 12:19:35,671 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 781 transitions. Word has length 63 [2022-01-10 12:19:35,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:35,672 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 781 transitions. [2022-01-10 12:19:35,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 12:19:35,672 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 781 transitions. [2022-01-10 12:19:35,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:19:35,674 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:35,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:35,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:19:35,674 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:19:35,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:35,675 INFO L85 PathProgramCache]: Analyzing trace with hash -706093993, now seen corresponding path program 1 times [2022-01-10 12:19:35,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:35,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771137216] [2022-01-10 12:19:35,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:35,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:35,790 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 12:19:35,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:35,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771137216] [2022-01-10 12:19:35,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771137216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:35,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:35,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:19:35,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775812776] [2022-01-10 12:19:35,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:35,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:19:35,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:35,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:19:35,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:19:35,792 INFO L87 Difference]: Start difference. First operand 463 states and 781 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:35,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:35,929 INFO L93 Difference]: Finished difference Result 1323 states and 2243 transitions. [2022-01-10 12:19:35,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:19:35,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 12:19:35,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:35,933 INFO L225 Difference]: With dead ends: 1323 [2022-01-10 12:19:35,933 INFO L226 Difference]: Without dead ends: 894 [2022-01-10 12:19:35,934 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 12:19:35,934 INFO L933 BasicCegarLoop]: 790 mSDtfsCounter, 3621 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3621 SdHoareTripleChecker+Valid, 1594 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 12:19:35,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3621 Valid, 1594 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:19:35,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2022-01-10 12:19:35,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 463. [2022-01-10 12:19:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 461 states have (on average 1.6898047722342733) internal successors, (779), 462 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:35,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 779 transitions. [2022-01-10 12:19:35,990 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 779 transitions. Word has length 64 [2022-01-10 12:19:35,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:35,994 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 779 transitions. [2022-01-10 12:19:35,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:35,994 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 779 transitions. [2022-01-10 12:19:35,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 12:19:35,995 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:35,995 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 12:19:35,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:19:35,995 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:19:35,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:35,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1250047590, now seen corresponding path program 1 times [2022-01-10 12:19:35,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:35,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715113450] [2022-01-10 12:19:35,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:35,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:36,096 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 12:19:36,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:36,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715113450] [2022-01-10 12:19:36,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715113450] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:36,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:36,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:19:36,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156926466] [2022-01-10 12:19:36,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:36,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:19:36,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:36,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:19:36,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:19:36,098 INFO L87 Difference]: Start difference. First operand 463 states and 779 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 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 12:19:36,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:36,486 INFO L93 Difference]: Finished difference Result 2746 states and 4545 transitions. [2022-01-10 12:19:36,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:19:36,487 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 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 12:19:36,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:36,495 INFO L225 Difference]: With dead ends: 2746 [2022-01-10 12:19:36,495 INFO L226 Difference]: Without dead ends: 2556 [2022-01-10 12:19:36,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:19:36,497 INFO L933 BasicCegarLoop]: 1147 mSDtfsCounter, 4747 mSDsluCounter, 4465 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4747 SdHoareTripleChecker+Valid, 5612 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:36,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4747 Valid, 5612 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:19:36,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2022-01-10 12:19:36,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 840. [2022-01-10 12:19:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 838 states have (on average 1.6933174224343674) internal successors, (1419), 839 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1419 transitions. [2022-01-10 12:19:36,549 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1419 transitions. Word has length 66 [2022-01-10 12:19:36,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:36,551 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 1419 transitions. [2022-01-10 12:19:36,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 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 12:19:36,551 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1419 transitions. [2022-01-10 12:19:36,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:19:36,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:36,552 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 12:19:36,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:19:36,552 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:19:36,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:36,553 INFO L85 PathProgramCache]: Analyzing trace with hash -574165154, now seen corresponding path program 1 times [2022-01-10 12:19:36,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:36,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114122758] [2022-01-10 12:19:36,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:36,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:36,659 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 12:19:36,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:36,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114122758] [2022-01-10 12:19:36,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114122758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:36,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:36,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:19:36,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867758802] [2022-01-10 12:19:36,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:36,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:19:36,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:36,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:19:36,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:19:36,661 INFO L87 Difference]: Start difference. First operand 840 states and 1419 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 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 12:19:37,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:37,055 INFO L93 Difference]: Finished difference Result 4824 states and 8027 transitions. [2022-01-10 12:19:37,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:19:37,056 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 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 12:19:37,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:37,069 INFO L225 Difference]: With dead ends: 4824 [2022-01-10 12:19:37,070 INFO L226 Difference]: Without dead ends: 4518 [2022-01-10 12:19:37,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:19:37,071 INFO L933 BasicCegarLoop]: 1398 mSDtfsCounter, 4095 mSDsluCounter, 3953 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4095 SdHoareTripleChecker+Valid, 5351 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:37,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4095 Valid, 5351 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:19:37,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4518 states. [2022-01-10 12:19:37,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4518 to 1571. [2022-01-10 12:19:37,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1569 states have (on average 1.7010834926704907) internal successors, (2669), 1570 states have internal predecessors, (2669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:37,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2669 transitions. [2022-01-10 12:19:37,249 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2669 transitions. Word has length 67 [2022-01-10 12:19:37,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:37,249 INFO L470 AbstractCegarLoop]: Abstraction has 1571 states and 2669 transitions. [2022-01-10 12:19:37,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 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 12:19:37,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2669 transitions. [2022-01-10 12:19:37,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:19:37,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:37,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:37,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:19:37,252 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:19:37,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:37,252 INFO L85 PathProgramCache]: Analyzing trace with hash 624498804, now seen corresponding path program 1 times [2022-01-10 12:19:37,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:37,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789706086] [2022-01-10 12:19:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:37,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:37,370 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 12:19:37,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:37,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789706086] [2022-01-10 12:19:37,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789706086] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:37,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:37,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:19:37,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169463253] [2022-01-10 12:19:37,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:37,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:19:37,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:37,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:19:37,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:19:37,372 INFO L87 Difference]: Start difference. First operand 1571 states and 2669 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 12:19:37,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:37,659 INFO L93 Difference]: Finished difference Result 4525 states and 7747 transitions. [2022-01-10 12:19:37,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:19:37,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 12:19:37,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:37,668 INFO L225 Difference]: With dead ends: 4525 [2022-01-10 12:19:37,668 INFO L226 Difference]: Without dead ends: 3004 [2022-01-10 12:19:37,672 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 12:19:37,674 INFO L933 BasicCegarLoop]: 1461 mSDtfsCounter, 2274 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2274 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:37,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2274 Valid, 2193 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:19:37,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3004 states. [2022-01-10 12:19:37,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3004 to 1571. [2022-01-10 12:19:37,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1569 states have (on average 1.6998087954110899) internal successors, (2667), 1570 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:37,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2667 transitions. [2022-01-10 12:19:37,768 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2667 transitions. Word has length 67 [2022-01-10 12:19:37,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:37,768 INFO L470 AbstractCegarLoop]: Abstraction has 1571 states and 2667 transitions. [2022-01-10 12:19:37,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 12:19:37,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2667 transitions. [2022-01-10 12:19:37,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:19:37,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:37,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:37,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:19:37,773 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:19:37,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:37,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1404276266, now seen corresponding path program 1 times [2022-01-10 12:19:37,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:37,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075053723] [2022-01-10 12:19:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:37,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:37,854 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 12:19:37,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:37,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075053723] [2022-01-10 12:19:37,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075053723] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:37,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:37,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:19:37,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155725032] [2022-01-10 12:19:37,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:37,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:19:37,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:37,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:19:37,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:19:37,856 INFO L87 Difference]: Start difference. First operand 1571 states and 2667 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:38,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:38,490 INFO L93 Difference]: Finished difference Result 8925 states and 14931 transitions. [2022-01-10 12:19:38,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:19:38,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 12:19:38,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:38,512 INFO L225 Difference]: With dead ends: 8925 [2022-01-10 12:19:38,512 INFO L226 Difference]: Without dead ends: 8390 [2022-01-10 12:19:38,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:19:38,514 INFO L933 BasicCegarLoop]: 1404 mSDtfsCounter, 4033 mSDsluCounter, 3991 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4033 SdHoareTripleChecker+Valid, 5395 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:38,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4033 Valid, 5395 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:19:38,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8390 states. [2022-01-10 12:19:38,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8390 to 2994. [2022-01-10 12:19:38,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2994 states, 2992 states have (on average 1.7115641711229947) internal successors, (5121), 2993 states have internal predecessors, (5121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:38,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2994 states to 2994 states and 5121 transitions. [2022-01-10 12:19:38,732 INFO L78 Accepts]: Start accepts. Automaton has 2994 states and 5121 transitions. Word has length 68 [2022-01-10 12:19:38,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:38,732 INFO L470 AbstractCegarLoop]: Abstraction has 2994 states and 5121 transitions. [2022-01-10 12:19:38,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:38,732 INFO L276 IsEmpty]: Start isEmpty. Operand 2994 states and 5121 transitions. [2022-01-10 12:19:38,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:19:38,735 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:38,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:38,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:19:38,736 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:19:38,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:38,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1929077013, now seen corresponding path program 1 times [2022-01-10 12:19:38,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:38,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512452102] [2022-01-10 12:19:38,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:38,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:38,848 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 12:19:38,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:38,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512452102] [2022-01-10 12:19:38,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512452102] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:38,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:38,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:19:38,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668902411] [2022-01-10 12:19:38,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:38,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:19:38,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:38,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:19:38,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:19:38,850 INFO L87 Difference]: Start difference. First operand 2994 states and 5121 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:39,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:39,860 INFO L93 Difference]: Finished difference Result 9960 states and 16523 transitions. [2022-01-10 12:19:39,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 12:19:39,860 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 12:19:39,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:39,883 INFO L225 Difference]: With dead ends: 9960 [2022-01-10 12:19:39,884 INFO L226 Difference]: Without dead ends: 9070 [2022-01-10 12:19:39,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-01-10 12:19:39,886 INFO L933 BasicCegarLoop]: 957 mSDtfsCounter, 5606 mSDsluCounter, 5484 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5606 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:39,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5606 Valid, 6441 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:19:39,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9070 states. [2022-01-10 12:19:40,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9070 to 5845. [2022-01-10 12:19:40,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5845 states, 5843 states have (on average 1.7184665411603628) internal successors, (10041), 5844 states have internal predecessors, (10041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:40,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5845 states to 5845 states and 10041 transitions. [2022-01-10 12:19:40,316 INFO L78 Accepts]: Start accepts. Automaton has 5845 states and 10041 transitions. Word has length 68 [2022-01-10 12:19:40,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:40,316 INFO L470 AbstractCegarLoop]: Abstraction has 5845 states and 10041 transitions. [2022-01-10 12:19:40,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:40,316 INFO L276 IsEmpty]: Start isEmpty. Operand 5845 states and 10041 transitions. [2022-01-10 12:19:40,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:19:40,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:40,322 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] [2022-01-10 12:19:40,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:19:40,322 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:19:40,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:40,323 INFO L85 PathProgramCache]: Analyzing trace with hash -936230083, now seen corresponding path program 1 times [2022-01-10 12:19:40,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:40,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004715776] [2022-01-10 12:19:40,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:40,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:40,420 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 12:19:40,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:40,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004715776] [2022-01-10 12:19:40,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004715776] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:40,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:40,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:19:40,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532888240] [2022-01-10 12:19:40,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:40,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:19:40,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:40,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:19:40,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:19:40,421 INFO L87 Difference]: Start difference. First operand 5845 states and 10041 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:41,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:41,925 INFO L93 Difference]: Finished difference Result 18400 states and 30628 transitions. [2022-01-10 12:19:41,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 12:19:41,925 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 12:19:41,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:41,960 INFO L225 Difference]: With dead ends: 18400 [2022-01-10 12:19:41,961 INFO L226 Difference]: Without dead ends: 16681 [2022-01-10 12:19:41,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-01-10 12:19:41,970 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 5595 mSDsluCounter, 4774 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5595 SdHoareTripleChecker+Valid, 5591 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:41,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5595 Valid, 5591 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:19:41,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16681 states. [2022-01-10 12:19:42,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16681 to 11564. [2022-01-10 12:19:42,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11564 states, 11562 states have (on average 1.7217609410136654) internal successors, (19907), 11563 states have internal predecessors, (19907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:42,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11564 states to 11564 states and 19907 transitions. [2022-01-10 12:19:42,798 INFO L78 Accepts]: Start accepts. Automaton has 11564 states and 19907 transitions. Word has length 69 [2022-01-10 12:19:42,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:42,798 INFO L470 AbstractCegarLoop]: Abstraction has 11564 states and 19907 transitions. [2022-01-10 12:19:42,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:42,799 INFO L276 IsEmpty]: Start isEmpty. Operand 11564 states and 19907 transitions. [2022-01-10 12:19:42,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:19:42,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:42,810 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] [2022-01-10 12:19:42,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:19:42,811 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:19:42,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:42,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1345054308, now seen corresponding path program 1 times [2022-01-10 12:19:42,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:42,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297761154] [2022-01-10 12:19:42,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:42,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:42,895 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 12:19:42,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:42,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297761154] [2022-01-10 12:19:42,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297761154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:42,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:42,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:19:42,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882753106] [2022-01-10 12:19:42,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:42,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:19:42,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:42,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:19:42,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:19:42,897 INFO L87 Difference]: Start difference. First operand 11564 states and 19907 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:45,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:45,507 INFO L93 Difference]: Finished difference Result 28370 states and 48181 transitions. [2022-01-10 12:19:45,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:19:45,507 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 12:19:45,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:45,563 INFO L225 Difference]: With dead ends: 28370 [2022-01-10 12:19:45,564 INFO L226 Difference]: Without dead ends: 27264 [2022-01-10 12:19:45,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:19:45,573 INFO L933 BasicCegarLoop]: 1311 mSDtfsCounter, 3928 mSDsluCounter, 4654 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3928 SdHoareTripleChecker+Valid, 5965 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:45,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3928 Valid, 5965 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:19:45,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27264 states. [2022-01-10 12:19:46,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27264 to 11711. [2022-01-10 12:19:46,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11711 states, 11709 states have (on average 1.7191049619950465) internal successors, (20129), 11710 states have internal predecessors, (20129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:46,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11711 states to 11711 states and 20129 transitions. [2022-01-10 12:19:46,433 INFO L78 Accepts]: Start accepts. Automaton has 11711 states and 20129 transitions. Word has length 69 [2022-01-10 12:19:46,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:46,433 INFO L470 AbstractCegarLoop]: Abstraction has 11711 states and 20129 transitions. [2022-01-10 12:19:46,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:46,433 INFO L276 IsEmpty]: Start isEmpty. Operand 11711 states and 20129 transitions. [2022-01-10 12:19:46,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:19:46,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:46,449 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] [2022-01-10 12:19:46,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:19:46,449 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:19:46,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:46,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1073336823, now seen corresponding path program 1 times [2022-01-10 12:19:46,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:46,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089779784] [2022-01-10 12:19:46,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:46,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:46,556 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 12:19:46,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:46,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089779784] [2022-01-10 12:19:46,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089779784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:46,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:46,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:19:46,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138646243] [2022-01-10 12:19:46,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:46,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:19:46,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:46,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:19:46,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:19:46,557 INFO L87 Difference]: Start difference. First operand 11711 states and 20129 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:48,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:48,122 INFO L93 Difference]: Finished difference Result 19296 states and 32174 transitions. [2022-01-10 12:19:48,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:19:48,123 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 12:19:48,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:48,146 INFO L225 Difference]: With dead ends: 19296 [2022-01-10 12:19:48,146 INFO L226 Difference]: Without dead ends: 16507 [2022-01-10 12:19:48,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:19:48,152 INFO L933 BasicCegarLoop]: 999 mSDtfsCounter, 2819 mSDsluCounter, 3609 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2819 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:48,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2819 Valid, 4608 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:19:48,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16507 states. [2022-01-10 12:19:49,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16507 to 12907. [2022-01-10 12:19:49,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12907 states, 12905 states have (on average 1.70592793490895) internal successors, (22015), 12906 states have internal predecessors, (22015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:49,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12907 states to 12907 states and 22015 transitions. [2022-01-10 12:19:49,253 INFO L78 Accepts]: Start accepts. Automaton has 12907 states and 22015 transitions. Word has length 69 [2022-01-10 12:19:49,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:49,253 INFO L470 AbstractCegarLoop]: Abstraction has 12907 states and 22015 transitions. [2022-01-10 12:19:49,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:49,253 INFO L276 IsEmpty]: Start isEmpty. Operand 12907 states and 22015 transitions. [2022-01-10 12:19:49,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:19:49,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:49,264 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:49,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:19:49,265 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:19:49,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:49,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1218193357, now seen corresponding path program 1 times [2022-01-10 12:19:49,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:49,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208214222] [2022-01-10 12:19:49,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:49,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:49,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:19:49,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:49,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208214222] [2022-01-10 12:19:49,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208214222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:49,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:49,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:19:49,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954023463] [2022-01-10 12:19:49,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:49,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:19:49,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:49,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:19:49,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:19:49,332 INFO L87 Difference]: Start difference. First operand 12907 states and 22015 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:50,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:50,257 INFO L93 Difference]: Finished difference Result 14078 states and 23896 transitions. [2022-01-10 12:19:50,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:19:50,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 12:19:50,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:50,273 INFO L225 Difference]: With dead ends: 14078 [2022-01-10 12:19:50,274 INFO L226 Difference]: Without dead ends: 12907 [2022-01-10 12:19:50,276 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 12:19:50,277 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 665 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:50,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 1654 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:19:50,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12907 states. [2022-01-10 12:19:51,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12907 to 12907. [2022-01-10 12:19:51,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12907 states, 12905 states have (on average 1.7053080201472297) internal successors, (22007), 12906 states have internal predecessors, (22007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:51,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12907 states to 12907 states and 22007 transitions. [2022-01-10 12:19:51,201 INFO L78 Accepts]: Start accepts. Automaton has 12907 states and 22007 transitions. Word has length 69 [2022-01-10 12:19:51,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:51,201 INFO L470 AbstractCegarLoop]: Abstraction has 12907 states and 22007 transitions. [2022-01-10 12:19:51,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:51,201 INFO L276 IsEmpty]: Start isEmpty. Operand 12907 states and 22007 transitions. [2022-01-10 12:19:51,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:19:51,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:51,212 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] [2022-01-10 12:19:51,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:19:51,212 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:19:51,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:51,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1229509484, now seen corresponding path program 1 times [2022-01-10 12:19:51,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:51,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315987232] [2022-01-10 12:19:51,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:51,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:51,331 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 12:19:51,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:51,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315987232] [2022-01-10 12:19:51,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315987232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:51,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:51,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:19:51,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434863033] [2022-01-10 12:19:51,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:51,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:19:51,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:51,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:19:51,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:19:51,333 INFO L87 Difference]: Start difference. First operand 12907 states and 22007 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:52,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:52,929 INFO L93 Difference]: Finished difference Result 21211 states and 35185 transitions. [2022-01-10 12:19:52,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:19:52,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 12:19:52,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:52,950 INFO L225 Difference]: With dead ends: 21211 [2022-01-10 12:19:52,951 INFO L226 Difference]: Without dead ends: 17656 [2022-01-10 12:19:52,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 12:19:52,957 INFO L933 BasicCegarLoop]: 1237 mSDtfsCounter, 1666 mSDsluCounter, 2635 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1666 SdHoareTripleChecker+Valid, 3872 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:52,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1666 Valid, 3872 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:19:52,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17656 states. [2022-01-10 12:19:53,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17656 to 13071. [2022-01-10 12:19:53,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13071 states, 13069 states have (on average 1.6964572652842604) internal successors, (22171), 13070 states have internal predecessors, (22171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:54,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13071 states to 13071 states and 22171 transitions. [2022-01-10 12:19:54,026 INFO L78 Accepts]: Start accepts. Automaton has 13071 states and 22171 transitions. Word has length 69 [2022-01-10 12:19:54,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:54,026 INFO L470 AbstractCegarLoop]: Abstraction has 13071 states and 22171 transitions. [2022-01-10 12:19:54,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:54,026 INFO L276 IsEmpty]: Start isEmpty. Operand 13071 states and 22171 transitions. [2022-01-10 12:19:54,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 12:19:54,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:54,039 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 12:19:54,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:19:54,039 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:19:54,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:54,040 INFO L85 PathProgramCache]: Analyzing trace with hash -342357696, now seen corresponding path program 1 times [2022-01-10 12:19:54,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:54,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64946925] [2022-01-10 12:19:54,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:54,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:54,149 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 12:19:54,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:54,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64946925] [2022-01-10 12:19:54,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64946925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:54,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:54,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:19:54,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491755895] [2022-01-10 12:19:54,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:54,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:19:54,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:54,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:19:54,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:19:54,152 INFO L87 Difference]: Start difference. First operand 13071 states and 22171 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:57,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:57,128 INFO L93 Difference]: Finished difference Result 34187 states and 57159 transitions. [2022-01-10 12:19:57,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:19:57,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 12:19:57,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:57,171 INFO L225 Difference]: With dead ends: 34187 [2022-01-10 12:19:57,172 INFO L226 Difference]: Without dead ends: 32648 [2022-01-10 12:19:57,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:19:57,180 INFO L933 BasicCegarLoop]: 1270 mSDtfsCounter, 3883 mSDsluCounter, 3789 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3883 SdHoareTripleChecker+Valid, 5059 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:57,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3883 Valid, 5059 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:19:57,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32648 states. [2022-01-10 12:19:58,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32648 to 13372. [2022-01-10 12:19:58,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13372 states, 13370 states have (on average 1.694016454749439) internal successors, (22649), 13371 states have internal predecessors, (22649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:58,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13372 states to 13372 states and 22649 transitions. [2022-01-10 12:19:58,385 INFO L78 Accepts]: Start accepts. Automaton has 13372 states and 22649 transitions. Word has length 70 [2022-01-10 12:19:58,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:58,385 INFO L470 AbstractCegarLoop]: Abstraction has 13372 states and 22649 transitions. [2022-01-10 12:19:58,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:58,385 INFO L276 IsEmpty]: Start isEmpty. Operand 13372 states and 22649 transitions. [2022-01-10 12:19:58,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 12:19:58,395 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:58,395 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 12:19:58,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:19:58,395 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:19:58,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:58,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1882720186, now seen corresponding path program 1 times [2022-01-10 12:19:58,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:58,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732807586] [2022-01-10 12:19:58,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:58,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:58,461 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 12:19:58,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:58,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732807586] [2022-01-10 12:19:58,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732807586] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:58,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:58,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:19:58,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406883129] [2022-01-10 12:19:58,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:58,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:19:58,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:58,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:19:58,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:19:58,462 INFO L87 Difference]: Start difference. First operand 13372 states and 22649 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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 12:20:00,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:00,881 INFO L93 Difference]: Finished difference Result 39600 states and 67107 transitions. [2022-01-10 12:20:00,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:20:00,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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 12:20:00,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:00,921 INFO L225 Difference]: With dead ends: 39600 [2022-01-10 12:20:00,921 INFO L226 Difference]: Without dead ends: 26294 [2022-01-10 12:20:00,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:20:00,947 INFO L933 BasicCegarLoop]: 1464 mSDtfsCounter, 2256 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2256 SdHoareTripleChecker+Valid, 2222 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 12:20:00,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2256 Valid, 2222 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:20:00,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26294 states. [2022-01-10 12:20:02,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26294 to 13372. [2022-01-10 12:20:02,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13372 states, 13370 states have (on average 1.693866866118175) internal successors, (22647), 13371 states have internal predecessors, (22647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:02,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13372 states to 13372 states and 22647 transitions. [2022-01-10 12:20:02,280 INFO L78 Accepts]: Start accepts. Automaton has 13372 states and 22647 transitions. Word has length 70 [2022-01-10 12:20:02,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:02,280 INFO L470 AbstractCegarLoop]: Abstraction has 13372 states and 22647 transitions. [2022-01-10 12:20:02,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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 12:20:02,280 INFO L276 IsEmpty]: Start isEmpty. Operand 13372 states and 22647 transitions. [2022-01-10 12:20:02,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 12:20:02,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:02,290 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 12:20:02,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:20:02,291 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:02,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:02,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1643077095, now seen corresponding path program 1 times [2022-01-10 12:20:02,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:02,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281826649] [2022-01-10 12:20:02,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:02,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:02,363 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 12:20:02,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:02,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281826649] [2022-01-10 12:20:02,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281826649] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:02,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:02,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:20:02,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005668680] [2022-01-10 12:20:02,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:02,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:20:02,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:02,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:20:02,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:20:02,364 INFO L87 Difference]: Start difference. First operand 13372 states and 22647 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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 12:20:04,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:04,259 INFO L93 Difference]: Finished difference Result 22882 states and 37600 transitions. [2022-01-10 12:20:04,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:20:04,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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 12:20:04,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:04,285 INFO L225 Difference]: With dead ends: 22882 [2022-01-10 12:20:04,286 INFO L226 Difference]: Without dead ends: 16950 [2022-01-10 12:20:04,295 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 12:20:04,296 INFO L933 BasicCegarLoop]: 792 mSDtfsCounter, 1781 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1781 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:04,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1781 Valid, 1897 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:20:04,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16950 states. [2022-01-10 12:20:05,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16950 to 13342. [2022-01-10 12:20:05,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13342 states, 13340 states have (on average 1.6894302848575713) internal successors, (22537), 13341 states have internal predecessors, (22537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:05,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13342 states to 13342 states and 22537 transitions. [2022-01-10 12:20:05,594 INFO L78 Accepts]: Start accepts. Automaton has 13342 states and 22537 transitions. Word has length 70 [2022-01-10 12:20:05,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:05,594 INFO L470 AbstractCegarLoop]: Abstraction has 13342 states and 22537 transitions. [2022-01-10 12:20:05,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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 12:20:05,594 INFO L276 IsEmpty]: Start isEmpty. Operand 13342 states and 22537 transitions. [2022-01-10 12:20:05,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 12:20:05,603 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:05,603 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 12:20:05,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:20:05,604 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:05,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:05,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1425709168, now seen corresponding path program 1 times [2022-01-10 12:20:05,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:05,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740001696] [2022-01-10 12:20:05,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:05,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:05,706 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 12:20:05,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:05,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740001696] [2022-01-10 12:20:05,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740001696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:05,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:05,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:20:05,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269266086] [2022-01-10 12:20:05,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:05,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:20:05,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:05,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:20:05,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:20:05,708 INFO L87 Difference]: Start difference. First operand 13342 states and 22537 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 12:20:07,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:07,114 INFO L93 Difference]: Finished difference Result 18828 states and 31266 transitions. [2022-01-10 12:20:07,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:20:07,116 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 12:20:07,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:07,137 INFO L225 Difference]: With dead ends: 18828 [2022-01-10 12:20:07,137 INFO L226 Difference]: Without dead ends: 13464 [2022-01-10 12:20:07,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2022-01-10 12:20:07,147 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 1649 mSDsluCounter, 3264 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 4063 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:07,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1649 Valid, 4063 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:20:07,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13464 states. [2022-01-10 12:20:08,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13464 to 13218. [2022-01-10 12:20:08,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13218 states, 13216 states have (on average 1.6856083535108959) internal successors, (22277), 13217 states have internal predecessors, (22277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:08,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13218 states to 13218 states and 22277 transitions. [2022-01-10 12:20:08,427 INFO L78 Accepts]: Start accepts. Automaton has 13218 states and 22277 transitions. Word has length 70 [2022-01-10 12:20:08,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:08,427 INFO L470 AbstractCegarLoop]: Abstraction has 13218 states and 22277 transitions. [2022-01-10 12:20:08,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 12:20:08,428 INFO L276 IsEmpty]: Start isEmpty. Operand 13218 states and 22277 transitions. [2022-01-10 12:20:08,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 12:20:08,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:08,439 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 12:20:08,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 12:20:08,440 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:08,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:08,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1092155341, now seen corresponding path program 1 times [2022-01-10 12:20:08,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:08,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155020919] [2022-01-10 12:20:08,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:08,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:08,526 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 12:20:08,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:08,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155020919] [2022-01-10 12:20:08,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155020919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:08,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:08,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:20:08,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221491402] [2022-01-10 12:20:08,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:08,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:20:08,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:08,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:20:08,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:20:08,527 INFO L87 Difference]: Start difference. First operand 13218 states and 22277 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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 12:20:09,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:09,995 INFO L93 Difference]: Finished difference Result 16452 states and 27374 transitions. [2022-01-10 12:20:09,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:20:09,996 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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 12:20:09,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:10,017 INFO L225 Difference]: With dead ends: 16452 [2022-01-10 12:20:10,017 INFO L226 Difference]: Without dead ends: 13460 [2022-01-10 12:20:10,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:20:10,027 INFO L933 BasicCegarLoop]: 787 mSDtfsCounter, 2780 mSDsluCounter, 2052 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2780 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:10,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2780 Valid, 2839 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:20:10,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13460 states. [2022-01-10 12:20:11,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13460 to 13188. [2022-01-10 12:20:11,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13188 states, 13186 states have (on average 1.684893068405885) internal successors, (22217), 13187 states have internal predecessors, (22217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:11,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13188 states to 13188 states and 22217 transitions. [2022-01-10 12:20:11,398 INFO L78 Accepts]: Start accepts. Automaton has 13188 states and 22217 transitions. Word has length 71 [2022-01-10 12:20:11,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:11,399 INFO L470 AbstractCegarLoop]: Abstraction has 13188 states and 22217 transitions. [2022-01-10 12:20:11,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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 12:20:11,399 INFO L276 IsEmpty]: Start isEmpty. Operand 13188 states and 22217 transitions. [2022-01-10 12:20:11,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 12:20:11,406 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:11,406 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 12:20:11,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 12:20:11,406 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:11,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:11,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1288668846, now seen corresponding path program 1 times [2022-01-10 12:20:11,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:11,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478242585] [2022-01-10 12:20:11,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:11,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:11,535 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 12:20:11,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:11,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478242585] [2022-01-10 12:20:11,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478242585] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:11,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:11,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:20:11,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580745294] [2022-01-10 12:20:11,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:11,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:20:11,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:11,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:20:11,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:20:11,536 INFO L87 Difference]: Start difference. First operand 13188 states and 22217 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 12:20:16,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:16,304 INFO L93 Difference]: Finished difference Result 32702 states and 52315 transitions. [2022-01-10 12:20:16,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:20:16,305 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 12:20:16,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:16,353 INFO L225 Difference]: With dead ends: 32702 [2022-01-10 12:20:16,354 INFO L226 Difference]: Without dead ends: 29900 [2022-01-10 12:20:16,371 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 12:20:16,372 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 1974 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1974 SdHoareTripleChecker+Valid, 3100 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:16,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1974 Valid, 3100 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:20:16,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29900 states. [2022-01-10 12:20:18,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29900 to 18030. [2022-01-10 12:20:18,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18030 states, 18028 states have (on average 1.63645440426004) internal successors, (29502), 18029 states have internal predecessors, (29502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:18,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18030 states to 18030 states and 29502 transitions. [2022-01-10 12:20:18,767 INFO L78 Accepts]: Start accepts. Automaton has 18030 states and 29502 transitions. Word has length 71 [2022-01-10 12:20:18,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:18,767 INFO L470 AbstractCegarLoop]: Abstraction has 18030 states and 29502 transitions. [2022-01-10 12:20:18,767 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 12:20:18,767 INFO L276 IsEmpty]: Start isEmpty. Operand 18030 states and 29502 transitions. [2022-01-10 12:20:18,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:20:18,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:18,778 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 12:20:18,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 12:20:18,779 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:18,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:18,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1293077428, now seen corresponding path program 1 times [2022-01-10 12:20:18,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:18,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947403564] [2022-01-10 12:20:18,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:18,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:18,855 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 12:20:18,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:18,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947403564] [2022-01-10 12:20:18,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947403564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:18,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:18,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:20:18,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177213412] [2022-01-10 12:20:18,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:18,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:20:18,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:18,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:20:18,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:20:18,857 INFO L87 Difference]: Start difference. First operand 18030 states and 29502 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:23,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:23,384 INFO L93 Difference]: Finished difference Result 28651 states and 45924 transitions. [2022-01-10 12:20:23,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:20:23,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 12:20:23,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:23,432 INFO L225 Difference]: With dead ends: 28651 [2022-01-10 12:20:23,432 INFO L226 Difference]: Without dead ends: 28640 [2022-01-10 12:20:23,439 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 12:20:23,440 INFO L933 BasicCegarLoop]: 762 mSDtfsCounter, 1125 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 2853 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:23,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1125 Valid, 2853 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:20:23,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28640 states. [2022-01-10 12:20:26,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28640 to 18187. [2022-01-10 12:20:26,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18187 states, 18185 states have (on average 1.6307946109430849) internal successors, (29656), 18186 states have internal predecessors, (29656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:26,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18187 states to 18187 states and 29656 transitions. [2022-01-10 12:20:26,177 INFO L78 Accepts]: Start accepts. Automaton has 18187 states and 29656 transitions. Word has length 72 [2022-01-10 12:20:26,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:26,178 INFO L470 AbstractCegarLoop]: Abstraction has 18187 states and 29656 transitions. [2022-01-10 12:20:26,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:26,178 INFO L276 IsEmpty]: Start isEmpty. Operand 18187 states and 29656 transitions. [2022-01-10 12:20:26,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:20:26,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:26,186 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 12:20:26,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 12:20:26,187 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:26,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:26,187 INFO L85 PathProgramCache]: Analyzing trace with hash -382664468, now seen corresponding path program 1 times [2022-01-10 12:20:26,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:26,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017958395] [2022-01-10 12:20:26,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:26,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:26,316 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 12:20:26,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:26,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017958395] [2022-01-10 12:20:26,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017958395] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:26,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:26,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 12:20:26,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163733127] [2022-01-10 12:20:26,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:26,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:20:26,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:26,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:20:26,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:20:26,318 INFO L87 Difference]: Start difference. First operand 18187 states and 29656 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 12:20:30,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:30,007 INFO L93 Difference]: Finished difference Result 31044 states and 49307 transitions. [2022-01-10 12:20:30,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 12:20:30,008 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 12:20:30,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:30,041 INFO L225 Difference]: With dead ends: 31044 [2022-01-10 12:20:30,041 INFO L226 Difference]: Without dead ends: 23291 [2022-01-10 12:20:30,052 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 12:20:30,055 INFO L933 BasicCegarLoop]: 749 mSDtfsCounter, 2746 mSDsluCounter, 4400 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2746 SdHoareTripleChecker+Valid, 5149 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:30,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2746 Valid, 5149 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:20:30,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23291 states. [2022-01-10 12:20:32,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23291 to 18027. [2022-01-10 12:20:32,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18027 states, 18025 states have (on average 1.6230790568654647) internal successors, (29256), 18026 states have internal predecessors, (29256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:32,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18027 states to 18027 states and 29256 transitions. [2022-01-10 12:20:32,511 INFO L78 Accepts]: Start accepts. Automaton has 18027 states and 29256 transitions. Word has length 72 [2022-01-10 12:20:32,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:32,511 INFO L470 AbstractCegarLoop]: Abstraction has 18027 states and 29256 transitions. [2022-01-10 12:20:32,511 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 12:20:32,511 INFO L276 IsEmpty]: Start isEmpty. Operand 18027 states and 29256 transitions. [2022-01-10 12:20:32,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 12:20:32,521 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:32,521 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] [2022-01-10 12:20:32,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 12:20:32,521 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:32,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:32,522 INFO L85 PathProgramCache]: Analyzing trace with hash 959583730, now seen corresponding path program 1 times [2022-01-10 12:20:32,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:32,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72458458] [2022-01-10 12:20:32,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:32,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:32,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:32,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:32,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72458458] [2022-01-10 12:20:32,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72458458] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:32,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:32,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:20:32,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161699365] [2022-01-10 12:20:32,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:32,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:20:32,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:32,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:20:32,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:20:32,579 INFO L87 Difference]: Start difference. First operand 18027 states and 29256 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:39,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:39,306 INFO L93 Difference]: Finished difference Result 44998 states and 68820 transitions. [2022-01-10 12:20:39,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:20:39,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-01-10 12:20:39,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:39,353 INFO L225 Difference]: With dead ends: 44998 [2022-01-10 12:20:39,354 INFO L226 Difference]: Without dead ends: 35429 [2022-01-10 12:20:39,366 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 12:20:39,367 INFO L933 BasicCegarLoop]: 848 mSDtfsCounter, 618 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 2387 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:39,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 2387 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:20:39,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35429 states.