/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:54:07,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:54:07,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:54:07,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:54:07,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:54:07,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:54:07,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:54:07,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:54:07,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:54:07,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:54:08,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:54:08,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:54:08,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:54:08,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:54:08,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:54:08,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:54:08,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:54:08,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:54:08,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:54:08,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:54:08,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:54:08,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:54:08,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:54:08,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:54:08,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:54:08,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:54:08,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:54:08,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:54:08,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:54:08,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:54:08,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:54:08,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:54:08,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:54:08,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:54:08,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:54:08,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:54:08,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:54:08,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:54:08,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:54:08,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:54:08,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:54:08,017 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:54:08,030 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:54:08,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:54:08,031 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:54:08,031 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:54:08,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:54:08,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:54:08,032 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:54:08,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:54:08,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:54:08,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:54:08,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:54:08,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:54:08,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:54:08,033 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:54:08,033 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:54:08,033 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:54:08,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:54:08,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:54:08,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:54:08,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:54:08,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:54:08,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:54:08,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:54:08,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:54:08,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:54:08,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:54:08,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:54:08,035 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:54:08,035 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:54:08,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:54:08,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:54:08,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:54:08,036 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:54:08,036 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:54:08,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:54:08,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:54:08,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:54:08,247 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:54:08,247 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:54:08,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product33.cil.c [2022-01-10 23:54:08,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f9ca9f88/0d99bcc7b60c4d2aa8954e170cfa334c/FLAG675b12a74 [2022-01-10 23:54:08,785 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:54:08,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product33.cil.c [2022-01-10 23:54:08,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f9ca9f88/0d99bcc7b60c4d2aa8954e170cfa334c/FLAG675b12a74 [2022-01-10 23:54:09,110 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f9ca9f88/0d99bcc7b60c4d2aa8954e170cfa334c [2022-01-10 23:54:09,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:54:09,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:54:09,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:54:09,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:54:09,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:54:09,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:54:09" (1/1) ... [2022-01-10 23:54:09,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c9b6845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:09, skipping insertion in model container [2022-01-10 23:54:09,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:54:09" (1/1) ... [2022-01-10 23:54:09,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:54:09,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:54:09,333 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product33.cil.c[1543,1556] [2022-01-10 23:54:09,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:54:09,610 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:54:09,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:54:09,634 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product33.cil.c[1543,1556] [2022-01-10 23:54:09,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:54:09,690 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:54:09,698 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product33.cil.c[1543,1556] [2022-01-10 23:54:09,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:54:09,766 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:54:09,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:09 WrapperNode [2022-01-10 23:54:09,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:54:09,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:54:09,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:54:09,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:54:09,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:09" (1/1) ... [2022-01-10 23:54:09,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:09" (1/1) ... [2022-01-10 23:54:09,844 INFO L137 Inliner]: procedures = 136, calls = 229, calls flagged for inlining = 138, calls inlined = 203, statements flattened = 3050 [2022-01-10 23:54:09,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:54:09,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:54:09,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:54:09,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:54:09,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:09" (1/1) ... [2022-01-10 23:54:09,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:09" (1/1) ... [2022-01-10 23:54:09,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:09" (1/1) ... [2022-01-10 23:54:09,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:09" (1/1) ... [2022-01-10 23:54:09,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:09" (1/1) ... [2022-01-10 23:54:09,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:09" (1/1) ... [2022-01-10 23:54:09,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:09" (1/1) ... [2022-01-10 23:54:09,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:54:09,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:54:09,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:54:09,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:54:09,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:09" (1/1) ... [2022-01-10 23:54:09,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:54:09,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:54:09,981 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 23:54:09,988 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 23:54:10,016 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 23:54:10,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:54:10,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:54:10,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:54:10,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:54:10,208 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:54:10,209 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:54:11,445 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:54:11,458 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:54:11,458 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:54:11,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:54:11 BoogieIcfgContainer [2022-01-10 23:54:11,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:54:11,460 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:54:11,460 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:54:11,461 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:54:11,464 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:54:11" (1/1) ... [2022-01-10 23:54:11,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:54:11 BasicIcfg [2022-01-10 23:54:11,792 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:54:11,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:54:11,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:54:11,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:54:11,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:54:09" (1/4) ... [2022-01-10 23:54:11,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2169da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:54:11, skipping insertion in model container [2022-01-10 23:54:11,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:09" (2/4) ... [2022-01-10 23:54:11,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2169da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:54:11, skipping insertion in model container [2022-01-10 23:54:11,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:54:11" (3/4) ... [2022-01-10 23:54:11,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2169da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:54:11, skipping insertion in model container [2022-01-10 23:54:11,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:54:11" (4/4) ... [2022-01-10 23:54:11,798 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product33.cil.cTransformedIcfg [2022-01-10 23:54:11,801 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:54:11,801 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 23:54:11,841 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:54:11,845 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 23:54:11,845 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 23:54:11,865 INFO L276 IsEmpty]: Start isEmpty. Operand has 667 states, 664 states have (on average 1.6792168674698795) internal successors, (1115), 666 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states 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 23:54:11,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 23:54:11,883 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:11,884 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 23:54:11,884 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:11,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:11,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1224795266, now seen corresponding path program 1 times [2022-01-10 23:54:11,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:11,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806223048] [2022-01-10 23:54:11,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:11,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:12,259 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 23:54:12,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:12,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806223048] [2022-01-10 23:54:12,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806223048] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:12,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:12,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:54:12,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397923740] [2022-01-10 23:54:12,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:12,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:54:12,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:12,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:54:12,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:54:12,292 INFO L87 Difference]: Start difference. First operand has 667 states, 664 states have (on average 1.6792168674698795) internal successors, (1115), 666 states have internal predecessors, (1115), 0 states have call successors, (0), 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 34.5) internal successors, (69), 2 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 23:54:12,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:12,340 INFO L93 Difference]: Finished difference Result 1068 states and 1762 transitions. [2022-01-10 23:54:12,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:54:12,356 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 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 23:54:12,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:12,373 INFO L225 Difference]: With dead ends: 1068 [2022-01-10 23:54:12,373 INFO L226 Difference]: Without dead ends: 591 [2022-01-10 23:54:12,377 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 23:54:12,382 INFO L933 BasicCegarLoop]: 1109 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, 1109 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 23:54:12,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:54:12,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-01-10 23:54:12,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2022-01-10 23:54:12,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 589 states have (on average 1.696095076400679) internal successors, (999), 590 states have internal predecessors, (999), 0 states have call successors, (0), 0 states 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 23:54:12,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 999 transitions. [2022-01-10 23:54:12,433 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 999 transitions. Word has length 69 [2022-01-10 23:54:12,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:12,433 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 999 transitions. [2022-01-10 23:54:12,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 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 23:54:12,433 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 999 transitions. [2022-01-10 23:54:12,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:54:12,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:12,435 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 23:54:12,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:54:12,435 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:12,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:12,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1210004464, now seen corresponding path program 1 times [2022-01-10 23:54:12,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:12,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71959730] [2022-01-10 23:54:12,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:12,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:12,660 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 23:54:12,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:12,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71959730] [2022-01-10 23:54:12,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71959730] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:12,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:12,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:54:12,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768697569] [2022-01-10 23:54:12,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:12,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:54:12,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:12,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:54:12,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:54:12,663 INFO L87 Difference]: Start difference. First operand 591 states and 999 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 23:54:12,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:12,793 INFO L93 Difference]: Finished difference Result 1163 states and 1970 transitions. [2022-01-10 23:54:12,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:54:12,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 23:54:12,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:12,807 INFO L225 Difference]: With dead ends: 1163 [2022-01-10 23:54:12,807 INFO L226 Difference]: Without dead ends: 591 [2022-01-10 23:54:12,808 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 23:54:12,809 INFO L933 BasicCegarLoop]: 979 mSDtfsCounter, 974 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:12,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [974 Valid, 992 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:12,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-01-10 23:54:12,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2022-01-10 23:54:12,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 589 states have (on average 1.6926994906621393) internal successors, (997), 590 states have internal predecessors, (997), 0 states have call successors, (0), 0 states 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 23:54:12,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 997 transitions. [2022-01-10 23:54:12,872 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 997 transitions. Word has length 70 [2022-01-10 23:54:12,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:12,873 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 997 transitions. [2022-01-10 23:54:12,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 23:54:12,873 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 997 transitions. [2022-01-10 23:54:12,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:54:12,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:12,875 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 23:54:12,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:54:12,875 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:12,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:12,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1236516752, now seen corresponding path program 1 times [2022-01-10 23:54:12,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:12,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857367075] [2022-01-10 23:54:12,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:12,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:13,055 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 23:54:13,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:13,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857367075] [2022-01-10 23:54:13,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857367075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:13,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:13,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:54:13,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625531005] [2022-01-10 23:54:13,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:13,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:13,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:13,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:13,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:13,059 INFO L87 Difference]: Start difference. First operand 591 states and 997 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 23:54:13,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:13,289 INFO L93 Difference]: Finished difference Result 2823 states and 4781 transitions. [2022-01-10 23:54:13,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:54:13,290 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 23:54:13,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:13,298 INFO L225 Difference]: With dead ends: 2823 [2022-01-10 23:54:13,298 INFO L226 Difference]: Without dead ends: 2256 [2022-01-10 23:54:13,303 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 23:54:13,305 INFO L933 BasicCegarLoop]: 1917 mSDtfsCounter, 4768 mSDsluCounter, 2863 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 4780 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 23:54:13,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4768 Valid, 4780 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:13,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2022-01-10 23:54:13,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 591. [2022-01-10 23:54:13,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 589 states have (on average 1.6910016977928692) internal successors, (996), 590 states have internal predecessors, (996), 0 states have call successors, (0), 0 states 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 23:54:13,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 996 transitions. [2022-01-10 23:54:13,360 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 996 transitions. Word has length 72 [2022-01-10 23:54:13,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:13,362 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 996 transitions. [2022-01-10 23:54:13,362 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 23:54:13,362 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 996 transitions. [2022-01-10 23:54:13,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 23:54:13,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:13,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:13,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:54:13,365 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:13,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:13,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1439762216, now seen corresponding path program 1 times [2022-01-10 23:54:13,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:13,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35355050] [2022-01-10 23:54:13,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:13,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:13,485 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 23:54:13,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:13,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35355050] [2022-01-10 23:54:13,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35355050] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:13,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:13,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:54:13,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44996413] [2022-01-10 23:54:13,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:13,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:54:13,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:13,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:54:13,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:54:13,489 INFO L87 Difference]: Start difference. First operand 591 states and 996 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:13,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:13,537 INFO L93 Difference]: Finished difference Result 1167 states and 1970 transitions. [2022-01-10 23:54:13,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:54:13,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 23:54:13,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:13,540 INFO L225 Difference]: With dead ends: 1167 [2022-01-10 23:54:13,540 INFO L226 Difference]: Without dead ends: 605 [2022-01-10 23:54:13,541 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 23:54:13,548 INFO L933 BasicCegarLoop]: 1010 mSDtfsCounter, 975 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 1032 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 23:54:13,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 1032 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:54:13,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-01-10 23:54:13,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 591. [2022-01-10 23:54:13,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 589 states have (on average 1.6893039049235994) internal successors, (995), 590 states have internal predecessors, (995), 0 states have call successors, (0), 0 states 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 23:54:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 995 transitions. [2022-01-10 23:54:13,570 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 995 transitions. Word has length 73 [2022-01-10 23:54:13,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:13,570 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 995 transitions. [2022-01-10 23:54:13,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:13,571 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 995 transitions. [2022-01-10 23:54:13,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 23:54:13,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:13,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:13,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:54:13,572 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:13,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:13,574 INFO L85 PathProgramCache]: Analyzing trace with hash 561893231, now seen corresponding path program 1 times [2022-01-10 23:54:13,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:13,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977013355] [2022-01-10 23:54:13,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:13,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:13,667 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 23:54:13,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:13,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977013355] [2022-01-10 23:54:13,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977013355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:13,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:13,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:54:13,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119745363] [2022-01-10 23:54:13,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:13,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:13,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:13,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:13,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:13,670 INFO L87 Difference]: Start difference. First operand 591 states and 995 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:13,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:13,812 INFO L93 Difference]: Finished difference Result 1707 states and 2885 transitions. [2022-01-10 23:54:13,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:54:13,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 23:54:13,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:13,816 INFO L225 Difference]: With dead ends: 1707 [2022-01-10 23:54:13,816 INFO L226 Difference]: Without dead ends: 1150 [2022-01-10 23:54:13,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:54:13,817 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 4691 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4691 SdHoareTripleChecker+Valid, 2022 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 23:54:13,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4691 Valid, 2022 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:13,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2022-01-10 23:54:13,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 591. [2022-01-10 23:54:13,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 589 states have (on average 1.6859083191850595) internal successors, (993), 590 states have internal predecessors, (993), 0 states have call successors, (0), 0 states 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 23:54:13,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 993 transitions. [2022-01-10 23:54:13,846 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 993 transitions. Word has length 74 [2022-01-10 23:54:13,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:13,850 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 993 transitions. [2022-01-10 23:54:13,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:13,850 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 993 transitions. [2022-01-10 23:54:13,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 23:54:13,851 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:13,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:13,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:54:13,852 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:13,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:13,852 INFO L85 PathProgramCache]: Analyzing trace with hash -628179150, now seen corresponding path program 1 times [2022-01-10 23:54:13,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:13,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445965740] [2022-01-10 23:54:13,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:13,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:13,948 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 23:54:13,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:13,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445965740] [2022-01-10 23:54:13,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445965740] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:13,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:13,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:54:13,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75600199] [2022-01-10 23:54:13,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:13,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:54:13,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:13,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:54:13,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:54:13,950 INFO L87 Difference]: Start difference. First operand 591 states and 993 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:54:14,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:14,355 INFO L93 Difference]: Finished difference Result 4084 states and 6787 transitions. [2022-01-10 23:54:14,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:54:14,356 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-01-10 23:54:14,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:14,369 INFO L225 Difference]: With dead ends: 4084 [2022-01-10 23:54:14,369 INFO L226 Difference]: Without dead ends: 3776 [2022-01-10 23:54:14,371 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 23:54:14,372 INFO L933 BasicCegarLoop]: 1643 mSDtfsCounter, 7103 mSDsluCounter, 6213 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7103 SdHoareTripleChecker+Valid, 7856 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 23:54:14,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7103 Valid, 7856 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:14,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-10 23:54:14,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 1048. [2022-01-10 23:54:14,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 1046 states have (on average 1.6854684512428297) internal successors, (1763), 1047 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states 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 23:54:14,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1763 transitions. [2022-01-10 23:54:14,444 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1763 transitions. Word has length 76 [2022-01-10 23:54:14,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:14,444 INFO L470 AbstractCegarLoop]: Abstraction has 1048 states and 1763 transitions. [2022-01-10 23:54:14,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:54:14,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1763 transitions. [2022-01-10 23:54:14,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 23:54:14,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:14,449 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:14,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:54:14,450 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:14,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:14,450 INFO L85 PathProgramCache]: Analyzing trace with hash -448480503, now seen corresponding path program 1 times [2022-01-10 23:54:14,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:14,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814186084] [2022-01-10 23:54:14,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:14,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:14,548 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 23:54:14,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:14,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814186084] [2022-01-10 23:54:14,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814186084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:14,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:14,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:54:14,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539763812] [2022-01-10 23:54:14,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:14,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:14,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:14,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:14,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:14,550 INFO L87 Difference]: Start difference. First operand 1048 states and 1763 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 23:54:14,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:14,693 INFO L93 Difference]: Finished difference Result 1973 states and 3261 transitions. [2022-01-10 23:54:14,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:54:14,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 23:54:14,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:14,699 INFO L225 Difference]: With dead ends: 1973 [2022-01-10 23:54:14,699 INFO L226 Difference]: Without dead ends: 1463 [2022-01-10 23:54:14,700 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 23:54:14,701 INFO L933 BasicCegarLoop]: 979 mSDtfsCounter, 2855 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2855 SdHoareTripleChecker+Valid, 2321 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 23:54:14,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2855 Valid, 2321 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:54:14,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2022-01-10 23:54:14,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1048. [2022-01-10 23:54:14,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 1046 states have (on average 1.681644359464627) internal successors, (1759), 1047 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states 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 23:54:14,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1759 transitions. [2022-01-10 23:54:14,762 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1759 transitions. Word has length 77 [2022-01-10 23:54:14,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:14,762 INFO L470 AbstractCegarLoop]: Abstraction has 1048 states and 1759 transitions. [2022-01-10 23:54:14,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 23:54:14,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1759 transitions. [2022-01-10 23:54:14,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 23:54:14,764 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:14,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:14,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:54:14,764 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:14,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:14,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1960987870, now seen corresponding path program 1 times [2022-01-10 23:54:14,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:14,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425186971] [2022-01-10 23:54:14,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:14,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:14,831 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 23:54:14,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:14,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425186971] [2022-01-10 23:54:14,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425186971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:14,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:14,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:54:14,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350869438] [2022-01-10 23:54:14,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:14,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:14,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:14,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:14,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:14,833 INFO L87 Difference]: Start difference. First operand 1048 states and 1759 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 23:54:15,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:15,028 INFO L93 Difference]: Finished difference Result 3021 states and 5106 transitions. [2022-01-10 23:54:15,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:54:15,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 23:54:15,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:15,035 INFO L225 Difference]: With dead ends: 3021 [2022-01-10 23:54:15,035 INFO L226 Difference]: Without dead ends: 2010 [2022-01-10 23:54:15,037 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 23:54:15,039 INFO L933 BasicCegarLoop]: 1885 mSDtfsCounter, 2910 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2910 SdHoareTripleChecker+Valid, 2829 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 23:54:15,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2910 Valid, 2829 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:15,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2022-01-10 23:54:15,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1048. [2022-01-10 23:54:15,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 1046 states have (on average 1.6797323135755258) internal successors, (1757), 1047 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states 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 23:54:15,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1757 transitions. [2022-01-10 23:54:15,120 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1757 transitions. Word has length 77 [2022-01-10 23:54:15,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:15,121 INFO L470 AbstractCegarLoop]: Abstraction has 1048 states and 1757 transitions. [2022-01-10 23:54:15,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 23:54:15,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1757 transitions. [2022-01-10 23:54:15,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 23:54:15,122 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:15,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:15,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:54:15,123 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:15,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:15,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1167409114, now seen corresponding path program 1 times [2022-01-10 23:54:15,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:15,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279530361] [2022-01-10 23:54:15,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:15,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:15,278 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 23:54:15,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:15,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279530361] [2022-01-10 23:54:15,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279530361] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:15,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:15,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:54:15,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620259242] [2022-01-10 23:54:15,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:15,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:54:15,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:15,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:54:15,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:54:15,280 INFO L87 Difference]: Start difference. First operand 1048 states and 1757 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 23:54:16,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:16,136 INFO L93 Difference]: Finished difference Result 5084 states and 8218 transitions. [2022-01-10 23:54:16,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:54:16,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-01-10 23:54:16,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:16,150 INFO L225 Difference]: With dead ends: 5084 [2022-01-10 23:54:16,150 INFO L226 Difference]: Without dead ends: 4616 [2022-01-10 23:54:16,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:54:16,154 INFO L933 BasicCegarLoop]: 1298 mSDtfsCounter, 10284 mSDsluCounter, 7293 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10284 SdHoareTripleChecker+Valid, 8591 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:16,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10284 Valid, 8591 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 23:54:16,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4616 states. [2022-01-10 23:54:16,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4616 to 1931. [2022-01-10 23:54:16,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1929 states have (on average 1.689476412649041) internal successors, (3259), 1930 states have internal predecessors, (3259), 0 states have call successors, (0), 0 states 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 23:54:16,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 3259 transitions. [2022-01-10 23:54:16,307 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 3259 transitions. Word has length 78 [2022-01-10 23:54:16,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:16,307 INFO L470 AbstractCegarLoop]: Abstraction has 1931 states and 3259 transitions. [2022-01-10 23:54:16,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 23:54:16,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 3259 transitions. [2022-01-10 23:54:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 23:54:16,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:16,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:16,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:54:16,311 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:16,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:16,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1296951456, now seen corresponding path program 1 times [2022-01-10 23:54:16,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:16,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476044819] [2022-01-10 23:54:16,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:16,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:16,457 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 23:54:16,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:16,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476044819] [2022-01-10 23:54:16,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476044819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:16,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:16,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:54:16,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150566834] [2022-01-10 23:54:16,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:16,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:54:16,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:16,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:54:16,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:54:16,459 INFO L87 Difference]: Start difference. First operand 1931 states and 3259 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 23:54:17,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:17,660 INFO L93 Difference]: Finished difference Result 8292 states and 13440 transitions. [2022-01-10 23:54:17,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:54:17,661 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-01-10 23:54:17,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:17,683 INFO L225 Difference]: With dead ends: 8292 [2022-01-10 23:54:17,683 INFO L226 Difference]: Without dead ends: 7465 [2022-01-10 23:54:17,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:54:17,686 INFO L933 BasicCegarLoop]: 1158 mSDtfsCounter, 8444 mSDsluCounter, 7500 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8444 SdHoareTripleChecker+Valid, 8658 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:17,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8444 Valid, 8658 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 23:54:17,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7465 states. [2022-01-10 23:54:17,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7465 to 3702. [2022-01-10 23:54:17,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3702 states, 3700 states have (on average 1.6948648648648648) internal successors, (6271), 3701 states have internal predecessors, (6271), 0 states have call successors, (0), 0 states 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 23:54:18,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3702 states to 3702 states and 6271 transitions. [2022-01-10 23:54:18,001 INFO L78 Accepts]: Start accepts. Automaton has 3702 states and 6271 transitions. Word has length 79 [2022-01-10 23:54:18,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:18,001 INFO L470 AbstractCegarLoop]: Abstraction has 3702 states and 6271 transitions. [2022-01-10 23:54:18,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 23:54:18,002 INFO L276 IsEmpty]: Start isEmpty. Operand 3702 states and 6271 transitions. [2022-01-10 23:54:18,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 23:54:18,005 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:18,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:18,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:54:18,005 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:18,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:18,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1308267583, now seen corresponding path program 1 times [2022-01-10 23:54:18,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:18,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151289073] [2022-01-10 23:54:18,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:18,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:18,098 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 23:54:18,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:18,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151289073] [2022-01-10 23:54:18,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151289073] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:18,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:18,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:54:18,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028329931] [2022-01-10 23:54:18,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:18,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:54:18,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:18,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:54:18,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:54:18,099 INFO L87 Difference]: Start difference. First operand 3702 states and 6271 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 23:54:19,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:19,050 INFO L93 Difference]: Finished difference Result 10402 states and 17413 transitions. [2022-01-10 23:54:19,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:54:19,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-01-10 23:54:19,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:19,077 INFO L225 Difference]: With dead ends: 10402 [2022-01-10 23:54:19,077 INFO L226 Difference]: Without dead ends: 9704 [2022-01-10 23:54:19,079 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 23:54:19,079 INFO L933 BasicCegarLoop]: 1919 mSDtfsCounter, 5370 mSDsluCounter, 6310 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5370 SdHoareTripleChecker+Valid, 8229 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:19,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5370 Valid, 8229 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:19,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9704 states. [2022-01-10 23:54:19,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9704 to 3801. [2022-01-10 23:54:19,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3801 states, 3799 states have (on average 1.6922874440642275) internal successors, (6429), 3800 states have internal predecessors, (6429), 0 states have call successors, (0), 0 states 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 23:54:19,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3801 states to 3801 states and 6429 transitions. [2022-01-10 23:54:19,417 INFO L78 Accepts]: Start accepts. Automaton has 3801 states and 6429 transitions. Word has length 79 [2022-01-10 23:54:19,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:19,418 INFO L470 AbstractCegarLoop]: Abstraction has 3801 states and 6429 transitions. [2022-01-10 23:54:19,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 23:54:19,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3801 states and 6429 transitions. [2022-01-10 23:54:19,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 23:54:19,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:19,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:19,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:54:19,424 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:19,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:19,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1479318865, now seen corresponding path program 1 times [2022-01-10 23:54:19,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:19,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770345959] [2022-01-10 23:54:19,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:19,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:19,523 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 23:54:19,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:19,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770345959] [2022-01-10 23:54:19,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770345959] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:19,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:19,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:54:19,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253479060] [2022-01-10 23:54:19,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:19,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:19,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:19,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:19,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:19,525 INFO L87 Difference]: Start difference. First operand 3801 states and 6429 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 23:54:20,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:20,903 INFO L93 Difference]: Finished difference Result 12749 states and 20517 transitions. [2022-01-10 23:54:20,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:54:20,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-01-10 23:54:20,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:20,921 INFO L225 Difference]: With dead ends: 12749 [2022-01-10 23:54:20,921 INFO L226 Difference]: Without dead ends: 11488 [2022-01-10 23:54:20,925 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 23:54:20,925 INFO L933 BasicCegarLoop]: 989 mSDtfsCounter, 3635 mSDsluCounter, 3640 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3635 SdHoareTripleChecker+Valid, 4629 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:20,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3635 Valid, 4629 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:20,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11488 states. [2022-01-10 23:54:21,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11488 to 5398. [2022-01-10 23:54:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5398 states, 5396 states have (on average 1.6575240919199408) internal successors, (8944), 5397 states have internal predecessors, (8944), 0 states have call successors, (0), 0 states 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 23:54:21,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5398 states to 5398 states and 8944 transitions. [2022-01-10 23:54:21,469 INFO L78 Accepts]: Start accepts. Automaton has 5398 states and 8944 transitions. Word has length 79 [2022-01-10 23:54:21,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:21,469 INFO L470 AbstractCegarLoop]: Abstraction has 5398 states and 8944 transitions. [2022-01-10 23:54:21,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 23:54:21,469 INFO L276 IsEmpty]: Start isEmpty. Operand 5398 states and 8944 transitions. [2022-01-10 23:54:21,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 23:54:21,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:21,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:21,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:54:21,473 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:21,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:21,474 INFO L85 PathProgramCache]: Analyzing trace with hash 480268877, now seen corresponding path program 1 times [2022-01-10 23:54:21,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:21,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925595874] [2022-01-10 23:54:21,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:21,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:21,549 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 23:54:21,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:21,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925595874] [2022-01-10 23:54:21,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925595874] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:21,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:21,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:54:21,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982403258] [2022-01-10 23:54:21,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:21,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:21,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:21,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:21,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:21,551 INFO L87 Difference]: Start difference. First operand 5398 states and 8944 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 23:54:23,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:23,013 INFO L93 Difference]: Finished difference Result 13877 states and 21959 transitions. [2022-01-10 23:54:23,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:54:23,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-01-10 23:54:23,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:23,029 INFO L225 Difference]: With dead ends: 13877 [2022-01-10 23:54:23,029 INFO L226 Difference]: Without dead ends: 11875 [2022-01-10 23:54:23,033 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 23:54:23,033 INFO L933 BasicCegarLoop]: 1307 mSDtfsCounter, 2052 mSDsluCounter, 3815 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2052 SdHoareTripleChecker+Valid, 5122 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:23,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2052 Valid, 5122 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:54:23,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11875 states. [2022-01-10 23:54:23,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11875 to 5432. [2022-01-10 23:54:23,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5432 states, 5430 states have (on average 1.6534069981583794) internal successors, (8978), 5431 states have internal predecessors, (8978), 0 states have call successors, (0), 0 states 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 23:54:23,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5432 states to 5432 states and 8978 transitions. [2022-01-10 23:54:23,568 INFO L78 Accepts]: Start accepts. Automaton has 5432 states and 8978 transitions. Word has length 80 [2022-01-10 23:54:23,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:23,568 INFO L470 AbstractCegarLoop]: Abstraction has 5432 states and 8978 transitions. [2022-01-10 23:54:23,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 23:54:23,569 INFO L276 IsEmpty]: Start isEmpty. Operand 5432 states and 8978 transitions. [2022-01-10 23:54:23,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 23:54:23,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:23,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:23,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:54:23,573 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:23,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:23,574 INFO L85 PathProgramCache]: Analyzing trace with hash -393947411, now seen corresponding path program 1 times [2022-01-10 23:54:23,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:23,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115415452] [2022-01-10 23:54:23,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:23,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:23,681 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 23:54:23,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:23,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115415452] [2022-01-10 23:54:23,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115415452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:23,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:23,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 23:54:23,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435268913] [2022-01-10 23:54:23,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:23,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:54:23,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:23,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:54:23,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:54:23,683 INFO L87 Difference]: Start difference. First operand 5432 states and 8978 transitions. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 23:54:24,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:24,652 INFO L93 Difference]: Finished difference Result 9367 states and 15011 transitions. [2022-01-10 23:54:24,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 23:54:24,652 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-01-10 23:54:24,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:24,659 INFO L225 Difference]: With dead ends: 9367 [2022-01-10 23:54:24,659 INFO L226 Difference]: Without dead ends: 6467 [2022-01-10 23:54:24,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2022-01-10 23:54:24,662 INFO L933 BasicCegarLoop]: 966 mSDtfsCounter, 3935 mSDsluCounter, 5018 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3935 SdHoareTripleChecker+Valid, 5984 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:24,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3935 Valid, 5984 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:24,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6467 states. [2022-01-10 23:54:25,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6467 to 5400. [2022-01-10 23:54:25,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5400 states, 5398 states have (on average 1.6483882919599853) internal successors, (8898), 5399 states have internal predecessors, (8898), 0 states have call successors, (0), 0 states 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 23:54:25,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5400 states to 5400 states and 8898 transitions. [2022-01-10 23:54:25,183 INFO L78 Accepts]: Start accepts. Automaton has 5400 states and 8898 transitions. Word has length 80 [2022-01-10 23:54:25,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:25,183 INFO L470 AbstractCegarLoop]: Abstraction has 5400 states and 8898 transitions. [2022-01-10 23:54:25,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 23:54:25,183 INFO L276 IsEmpty]: Start isEmpty. Operand 5400 states and 8898 transitions. [2022-01-10 23:54:25,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 23:54:25,188 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:25,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:25,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:54:25,189 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:25,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:25,189 INFO L85 PathProgramCache]: Analyzing trace with hash -89162417, now seen corresponding path program 1 times [2022-01-10 23:54:25,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:25,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658044856] [2022-01-10 23:54:25,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:25,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:25,282 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 23:54:25,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:25,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658044856] [2022-01-10 23:54:25,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658044856] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:25,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:25,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:54:25,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939373549] [2022-01-10 23:54:25,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:25,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:54:25,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:25,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:54:25,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:54:25,284 INFO L87 Difference]: Start difference. First operand 5400 states and 8898 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 23:54:27,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:27,275 INFO L93 Difference]: Finished difference Result 15768 states and 24882 transitions. [2022-01-10 23:54:27,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:54:27,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-10 23:54:27,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:27,290 INFO L225 Difference]: With dead ends: 15768 [2022-01-10 23:54:27,290 INFO L226 Difference]: Without dead ends: 12540 [2022-01-10 23:54:27,293 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 23:54:27,294 INFO L933 BasicCegarLoop]: 1156 mSDtfsCounter, 1205 mSDsluCounter, 2227 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 3383 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:27,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1205 Valid, 3383 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:27,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12540 states. [2022-01-10 23:54:27,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12540 to 5424. [2022-01-10 23:54:27,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5424 states, 5422 states have (on average 1.6455182589450388) internal successors, (8922), 5423 states have internal predecessors, (8922), 0 states have call successors, (0), 0 states 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 23:54:27,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 8922 transitions. [2022-01-10 23:54:27,897 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 8922 transitions. Word has length 83 [2022-01-10 23:54:27,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:27,897 INFO L470 AbstractCegarLoop]: Abstraction has 5424 states and 8922 transitions. [2022-01-10 23:54:27,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 23:54:27,897 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 8922 transitions. [2022-01-10 23:54:27,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 23:54:27,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:27,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:27,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:54:27,902 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:27,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:27,902 INFO L85 PathProgramCache]: Analyzing trace with hash 674183239, now seen corresponding path program 1 times [2022-01-10 23:54:27,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:27,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400630209] [2022-01-10 23:54:27,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:27,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:28,037 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 23:54:28,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:28,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400630209] [2022-01-10 23:54:28,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400630209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:28,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:28,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:54:28,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456659020] [2022-01-10 23:54:28,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:28,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:54:28,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:28,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:54:28,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:54:28,040 INFO L87 Difference]: Start difference. First operand 5424 states and 8922 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 23:54:31,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:31,401 INFO L93 Difference]: Finished difference Result 20672 states and 32447 transitions. [2022-01-10 23:54:31,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:54:31,401 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-10 23:54:31,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:31,428 INFO L225 Difference]: With dead ends: 20672 [2022-01-10 23:54:31,429 INFO L226 Difference]: Without dead ends: 17732 [2022-01-10 23:54:31,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:54:31,435 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 5875 mSDsluCounter, 6879 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5875 SdHoareTripleChecker+Valid, 8603 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:31,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5875 Valid, 8603 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:54:31,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17732 states. [2022-01-10 23:54:32,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17732 to 6380. [2022-01-10 23:54:32,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6380 states, 6378 states have (on average 1.6334274067105676) internal successors, (10418), 6379 states have internal predecessors, (10418), 0 states have call successors, (0), 0 states 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 23:54:32,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6380 states to 6380 states and 10418 transitions. [2022-01-10 23:54:32,394 INFO L78 Accepts]: Start accepts. Automaton has 6380 states and 10418 transitions. Word has length 83 [2022-01-10 23:54:32,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:32,394 INFO L470 AbstractCegarLoop]: Abstraction has 6380 states and 10418 transitions. [2022-01-10 23:54:32,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 23:54:32,394 INFO L276 IsEmpty]: Start isEmpty. Operand 6380 states and 10418 transitions. [2022-01-10 23:54:32,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 23:54:32,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:32,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:32,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 23:54:32,399 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:32,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:32,399 INFO L85 PathProgramCache]: Analyzing trace with hash 2088498519, now seen corresponding path program 1 times [2022-01-10 23:54:32,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:32,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495874097] [2022-01-10 23:54:32,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:32,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:32,452 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 23:54:32,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:32,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495874097] [2022-01-10 23:54:32,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495874097] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:32,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:32,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:54:32,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410291469] [2022-01-10 23:54:32,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:32,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:54:32,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:32,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:54:32,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:54:32,453 INFO L87 Difference]: Start difference. First operand 6380 states and 10418 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 23:54:33,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:33,573 INFO L93 Difference]: Finished difference Result 8638 states and 13889 transitions. [2022-01-10 23:54:33,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:54:33,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-10 23:54:33,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:33,582 INFO L225 Difference]: With dead ends: 8638 [2022-01-10 23:54:33,582 INFO L226 Difference]: Without dead ends: 7594 [2022-01-10 23:54:33,584 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 23:54:33,594 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 1332 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:33,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1332 Valid, 2184 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:54:33,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7594 states. [2022-01-10 23:54:34,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7594 to 6380. [2022-01-10 23:54:34,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6380 states, 6378 states have (on average 1.6331138287864535) internal successors, (10416), 6379 states have internal predecessors, (10416), 0 states have call successors, (0), 0 states 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 23:54:34,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6380 states to 6380 states and 10416 transitions. [2022-01-10 23:54:34,419 INFO L78 Accepts]: Start accepts. Automaton has 6380 states and 10416 transitions. Word has length 83 [2022-01-10 23:54:34,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:34,419 INFO L470 AbstractCegarLoop]: Abstraction has 6380 states and 10416 transitions. [2022-01-10 23:54:34,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 23:54:34,419 INFO L276 IsEmpty]: Start isEmpty. Operand 6380 states and 10416 transitions. [2022-01-10 23:54:34,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 23:54:34,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:34,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:34,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 23:54:34,424 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:34,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:34,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1063804598, now seen corresponding path program 1 times [2022-01-10 23:54:34,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:34,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561881414] [2022-01-10 23:54:34,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:34,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:34,493 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 23:54:34,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:34,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561881414] [2022-01-10 23:54:34,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561881414] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:34,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:34,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:54:34,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872461473] [2022-01-10 23:54:34,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:34,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:34,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:34,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:34,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:34,494 INFO L87 Difference]: Start difference. First operand 6380 states and 10416 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 23:54:39,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:39,773 INFO L93 Difference]: Finished difference Result 34722 states and 54532 transitions. [2022-01-10 23:54:39,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:54:39,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-10 23:54:39,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:39,812 INFO L225 Difference]: With dead ends: 34722 [2022-01-10 23:54:39,812 INFO L226 Difference]: Without dead ends: 30592 [2022-01-10 23:54:39,821 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 23:54:39,821 INFO L933 BasicCegarLoop]: 1054 mSDtfsCounter, 3929 mSDsluCounter, 3717 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3929 SdHoareTripleChecker+Valid, 4771 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:39,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3929 Valid, 4771 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:54:39,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30592 states. [2022-01-10 23:54:41,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30592 to 12336. [2022-01-10 23:54:41,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12336 states, 12334 states have (on average 1.6348305497000162) internal successors, (20164), 12335 states have internal predecessors, (20164), 0 states have call successors, (0), 0 states 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 23:54:41,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12336 states to 12336 states and 20164 transitions. [2022-01-10 23:54:41,652 INFO L78 Accepts]: Start accepts. Automaton has 12336 states and 20164 transitions. Word has length 83 [2022-01-10 23:54:41,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:41,652 INFO L470 AbstractCegarLoop]: Abstraction has 12336 states and 20164 transitions. [2022-01-10 23:54:41,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 23:54:41,652 INFO L276 IsEmpty]: Start isEmpty. Operand 12336 states and 20164 transitions. [2022-01-10 23:54:41,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 23:54:41,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:41,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:41,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 23:54:41,661 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:41,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:41,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1827150254, now seen corresponding path program 1 times [2022-01-10 23:54:41,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:41,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744795490] [2022-01-10 23:54:41,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:41,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:41,733 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 23:54:41,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:41,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744795490] [2022-01-10 23:54:41,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744795490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:41,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:41,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:54:41,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232308773] [2022-01-10 23:54:41,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:41,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:41,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:41,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:41,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:41,734 INFO L87 Difference]: Start difference. First operand 12336 states and 20164 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 23:54:46,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:46,570 INFO L93 Difference]: Finished difference Result 33072 states and 51544 transitions. [2022-01-10 23:54:46,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:54:46,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-10 23:54:46,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:46,604 INFO L225 Difference]: With dead ends: 33072 [2022-01-10 23:54:46,604 INFO L226 Difference]: Without dead ends: 25940 [2022-01-10 23:54:46,613 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 23:54:46,614 INFO L933 BasicCegarLoop]: 1984 mSDtfsCounter, 2595 mSDsluCounter, 4089 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2595 SdHoareTripleChecker+Valid, 6073 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:46,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2595 Valid, 6073 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:46,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25940 states. [2022-01-10 23:54:48,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25940 to 13248. [2022-01-10 23:54:48,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13248 states, 13246 states have (on average 1.6189038200211385) internal successors, (21444), 13247 states have internal predecessors, (21444), 0 states have call successors, (0), 0 states 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 23:54:48,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13248 states to 13248 states and 21444 transitions. [2022-01-10 23:54:48,667 INFO L78 Accepts]: Start accepts. Automaton has 13248 states and 21444 transitions. Word has length 83 [2022-01-10 23:54:48,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:48,667 INFO L470 AbstractCegarLoop]: Abstraction has 13248 states and 21444 transitions. [2022-01-10 23:54:48,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 23:54:48,667 INFO L276 IsEmpty]: Start isEmpty. Operand 13248 states and 21444 transitions. [2022-01-10 23:54:48,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 23:54:48,674 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:48,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:48,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 23:54:48,675 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:48,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:48,675 INFO L85 PathProgramCache]: Analyzing trace with hash 763300051, now seen corresponding path program 1 times [2022-01-10 23:54:48,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:48,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859418153] [2022-01-10 23:54:48,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:48,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:48,745 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 23:54:48,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:48,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859418153] [2022-01-10 23:54:48,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859418153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:48,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:48,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:54:48,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317855333] [2022-01-10 23:54:48,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:48,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:54:48,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:48,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:54:48,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:54:48,746 INFO L87 Difference]: Start difference. First operand 13248 states and 21444 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 23:55:00,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:55:00,383 INFO L93 Difference]: Finished difference Result 78834 states and 126346 transitions. [2022-01-10 23:55:00,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:55:00,383 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-01-10 23:55:00,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:55:00,496 INFO L225 Difference]: With dead ends: 78834 [2022-01-10 23:55:00,496 INFO L226 Difference]: Without dead ends: 71750 [2022-01-10 23:55:00,520 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 23:55:00,520 INFO L933 BasicCegarLoop]: 1505 mSDtfsCounter, 5483 mSDsluCounter, 4492 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5483 SdHoareTripleChecker+Valid, 5997 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:55:00,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5483 Valid, 5997 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:55:00,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71750 states. [2022-01-10 23:55:04,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71750 to 26384. [2022-01-10 23:55:04,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26384 states, 26382 states have (on average 1.6184519748313244) internal successors, (42698), 26383 states have internal predecessors, (42698), 0 states have call successors, (0), 0 states 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 23:55:05,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26384 states to 26384 states and 42698 transitions. [2022-01-10 23:55:05,025 INFO L78 Accepts]: Start accepts. Automaton has 26384 states and 42698 transitions. Word has length 84 [2022-01-10 23:55:05,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:55:05,025 INFO L470 AbstractCegarLoop]: Abstraction has 26384 states and 42698 transitions. [2022-01-10 23:55:05,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 23:55:05,025 INFO L276 IsEmpty]: Start isEmpty. Operand 26384 states and 42698 transitions. [2022-01-10 23:55:05,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 23:55:05,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:55:05,039 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:55:05,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 23:55:05,039 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:55:05,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:55:05,040 INFO L85 PathProgramCache]: Analyzing trace with hash 744025792, now seen corresponding path program 1 times [2022-01-10 23:55:05,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:55:05,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954904252] [2022-01-10 23:55:05,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:55:05,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:55:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:55:05,127 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 23:55:05,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:55:05,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954904252] [2022-01-10 23:55:05,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954904252] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:55:05,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:55:05,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:55:05,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924981661] [2022-01-10 23:55:05,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:55:05,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:55:05,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:55:05,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:55:05,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:55:05,129 INFO L87 Difference]: Start difference. First operand 26384 states and 42698 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 23:55:11,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:55:11,423 INFO L93 Difference]: Finished difference Result 50394 states and 79249 transitions. [2022-01-10 23:55:11,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 23:55:11,423 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-01-10 23:55:11,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:55:11,467 INFO L225 Difference]: With dead ends: 50394 [2022-01-10 23:55:11,467 INFO L226 Difference]: Without dead ends: 32296 [2022-01-10 23:55:11,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2022-01-10 23:55:11,485 INFO L933 BasicCegarLoop]: 1097 mSDtfsCounter, 2912 mSDsluCounter, 4029 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2912 SdHoareTripleChecker+Valid, 5126 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:55:11,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2912 Valid, 5126 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:55:11,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32296 states. [2022-01-10 23:55:15,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32296 to 26136. [2022-01-10 23:55:15,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26136 states, 26134 states have (on average 1.6154434835846023) internal successors, (42218), 26135 states have internal predecessors, (42218), 0 states have call successors, (0), 0 states 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 23:55:15,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26136 states to 26136 states and 42218 transitions. [2022-01-10 23:55:15,661 INFO L78 Accepts]: Start accepts. Automaton has 26136 states and 42218 transitions. Word has length 84 [2022-01-10 23:55:15,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:55:15,661 INFO L470 AbstractCegarLoop]: Abstraction has 26136 states and 42218 transitions. [2022-01-10 23:55:15,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 23:55:15,661 INFO L276 IsEmpty]: Start isEmpty. Operand 26136 states and 42218 transitions. [2022-01-10 23:55:15,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 23:55:15,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:55:15,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:55:15,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 23:55:15,677 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:55:15,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:55:15,678 INFO L85 PathProgramCache]: Analyzing trace with hash 13502254, now seen corresponding path program 1 times [2022-01-10 23:55:15,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:55:15,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976143364] [2022-01-10 23:55:15,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:55:15,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:55:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:55:15,758 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 23:55:15,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:55:15,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976143364] [2022-01-10 23:55:15,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976143364] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:55:15,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:55:15,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:55:15,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909082221] [2022-01-10 23:55:15,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:55:15,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:55:15,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:55:15,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:55:15,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:55:15,759 INFO L87 Difference]: Start difference. First operand 26136 states and 42218 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)