/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_SUM.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec4_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:44:46,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:44:46,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:44:46,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 05:44:46,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 05:44:46,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 05:44:46,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 05:44:46,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 05:44:46,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 05:44:46,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 05:44:46,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 05:44:46,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 05:44:46,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:44:46,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:44:46,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:44:46,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:44:46,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:44:46,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:44:46,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:44:46,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:44:46,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:44:46,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:44:46,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:44:46,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:44:47,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 05:44:47,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 05:44:47,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 05:44:47,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 05:44:47,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 05:44:47,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 05:44:47,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 05:44:47,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 05:44:47,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 05:44:47,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 05:44:47,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 05:44:47,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 05:44:47,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 05:44:47,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 05:44:47,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:44:47,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:44:47,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:44:47,009 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 05:44:47,032 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:44:47,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:44:47,033 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:44:47,033 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:44:47,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:44:47,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:44:47,034 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:44:47,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:44:47,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:44:47,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:44:47,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:44:47,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:44:47,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:44:47,035 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:44:47,036 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:44:47,036 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:44:47,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:44:47,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:44:47,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:44:47,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:44:47,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:44:47,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:44:47,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:44:47,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:44:47,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:44:47,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:44:47,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:44:47,037 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:44:47,037 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:44:47,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:44:47,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:44:47,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:44:47,038 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:44:47,038 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:44:47,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:44:47,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:44:47,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:44:47,218 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:44:47,219 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:44:47,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product33.cil.c [2022-01-11 05:44:47,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c26761748/7092b421e79e4731bbdf1047597c039c/FLAGf9b314baa [2022-01-11 05:44:47,724 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:44:47,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product33.cil.c [2022-01-11 05:44:47,774 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c26761748/7092b421e79e4731bbdf1047597c039c/FLAGf9b314baa [2022-01-11 05:44:48,242 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c26761748/7092b421e79e4731bbdf1047597c039c [2022-01-11 05:44:48,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:44:48,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:44:48,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:44:48,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:44:48,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:44:48,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:44:48" (1/1) ... [2022-01-11 05:44:48,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e7d71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:48, skipping insertion in model container [2022-01-11 05:44:48,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:44:48" (1/1) ... [2022-01-11 05:44:48,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:44:48,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:44:48,499 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_spec4_product33.cil.c[11229,11242] [2022-01-11 05:44:48,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:44:48,702 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-11 05:44:48,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:44:48,746 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_spec4_product33.cil.c[11229,11242] [2022-01-11 05:44:48,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:44:48,838 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:44:48,864 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_spec4_product33.cil.c[11229,11242] [2022-01-11 05:44:48,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:44:48,982 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:44:48,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:48 WrapperNode [2022-01-11 05:44:48,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:44:48,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:44:48,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:44:48,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:44:48,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:48" (1/1) ... [2022-01-11 05:44:49,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:48" (1/1) ... [2022-01-11 05:44:49,090 INFO L137 Inliner]: procedures = 136, calls = 228, calls flagged for inlining = 137, calls inlined = 201, statements flattened = 2958 [2022-01-11 05:44:49,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:44:49,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:44:49,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:44:49,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:44:49,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:48" (1/1) ... [2022-01-11 05:44:49,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:48" (1/1) ... [2022-01-11 05:44:49,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:48" (1/1) ... [2022-01-11 05:44:49,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:48" (1/1) ... [2022-01-11 05:44:49,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:48" (1/1) ... [2022-01-11 05:44:49,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:48" (1/1) ... [2022-01-11 05:44:49,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:48" (1/1) ... [2022-01-11 05:44:49,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:44:49,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:44:49,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:44:49,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:44:49,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:48" (1/1) ... [2022-01-11 05:44:49,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:44:49,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:44:49,172 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) [2022-01-11 05:44:49,214 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 [2022-01-11 05:44:49,219 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-11 05:44:49,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:44:49,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:44:49,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:44:49,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:44:49,449 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:44:49,450 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:44:50,568 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:44:50,582 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:44:50,583 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 05:44:50,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:44:50 BoogieIcfgContainer [2022-01-11 05:44:50,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:44:50,586 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:44:50,586 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:44:50,587 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:44:50,589 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:44:50" (1/1) ... [2022-01-11 05:44:50,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:44:50 BasicIcfg [2022-01-11 05:44:50,862 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:44:50,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:44:50,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:44:50,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:44:50,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:44:48" (1/4) ... [2022-01-11 05:44:50,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53769066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:44:50, skipping insertion in model container [2022-01-11 05:44:50,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:48" (2/4) ... [2022-01-11 05:44:50,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53769066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:44:50, skipping insertion in model container [2022-01-11 05:44:50,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:44:50" (3/4) ... [2022-01-11 05:44:50,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53769066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:44:50, skipping insertion in model container [2022-01-11 05:44:50,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:44:50" (4/4) ... [2022-01-11 05:44:50,866 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec4_product33.cil.cTransformedIcfg [2022-01-11 05:44:50,870 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:44:50,870 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 05:44:50,898 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:44:50,902 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 [2022-01-11 05:44:50,902 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 05:44:50,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 649 states, 646 states have (on average 1.673374613003096) internal successors, (1081), 648 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:50,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-11 05:44:50,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:50,928 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] [2022-01-11 05:44:50,928 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:50,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:50,932 INFO L85 PathProgramCache]: Analyzing trace with hash 456892904, now seen corresponding path program 1 times [2022-01-11 05:44:50,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:50,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510148142] [2022-01-11 05:44:50,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:50,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:51,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:51,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:51,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510148142] [2022-01-11 05:44:51,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510148142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:51,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:51,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:44:51,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073512429] [2022-01-11 05:44:51,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:51,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 05:44:51,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:51,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 05:44:51,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:44:51,348 INFO L87 Difference]: Start difference. First operand has 649 states, 646 states have (on average 1.673374613003096) internal successors, (1081), 648 states have internal predecessors, (1081), 0 states have call successors, (0), 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 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:51,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:51,410 INFO L93 Difference]: Finished difference Result 1032 states and 1694 transitions. [2022-01-11 05:44:51,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 05:44:51,412 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-11 05:44:51,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:51,421 INFO L225 Difference]: With dead ends: 1032 [2022-01-11 05:44:51,422 INFO L226 Difference]: Without dead ends: 510 [2022-01-11 05:44:51,427 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 [2022-01-11 05:44:51,429 INFO L933 BasicCegarLoop]: 1075 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, 1075 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 [2022-01-11 05:44:51,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:44:51,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-01-11 05:44:51,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2022-01-11 05:44:51,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 508 states have (on average 1.688976377952756) internal successors, (858), 509 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:51,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 858 transitions. [2022-01-11 05:44:51,483 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 858 transitions. Word has length 54 [2022-01-11 05:44:51,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:51,483 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 858 transitions. [2022-01-11 05:44:51,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:51,483 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 858 transitions. [2022-01-11 05:44:51,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-11 05:44:51,485 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:51,485 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] [2022-01-11 05:44:51,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:44:51,486 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:51,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:51,486 INFO L85 PathProgramCache]: Analyzing trace with hash -561776030, now seen corresponding path program 1 times [2022-01-11 05:44:51,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:51,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204367772] [2022-01-11 05:44:51,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:51,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:51,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:51,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:51,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204367772] [2022-01-11 05:44:51,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204367772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:51,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:51,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:44:51,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16394407] [2022-01-11 05:44:51,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:51,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:44:51,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:51,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:44:51,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:44:51,642 INFO L87 Difference]: Start difference. First operand 510 states and 858 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:51,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:51,720 INFO L93 Difference]: Finished difference Result 1001 states and 1688 transitions. [2022-01-11 05:44:51,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:44:51,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-11 05:44:51,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:51,724 INFO L225 Difference]: With dead ends: 1001 [2022-01-11 05:44:51,725 INFO L226 Difference]: Without dead ends: 510 [2022-01-11 05:44:51,726 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 [2022-01-11 05:44:51,727 INFO L933 BasicCegarLoop]: 838 mSDtfsCounter, 833 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:51,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [833 Valid, 851 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:44:51,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-01-11 05:44:51,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2022-01-11 05:44:51,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 508 states have (on average 1.68503937007874) internal successors, (856), 509 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:51,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 856 transitions. [2022-01-11 05:44:51,761 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 856 transitions. Word has length 55 [2022-01-11 05:44:51,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:51,763 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 856 transitions. [2022-01-11 05:44:51,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:51,765 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 856 transitions. [2022-01-11 05:44:51,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-11 05:44:51,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:51,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:51,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:44:51,773 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:51,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:51,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1879660642, now seen corresponding path program 1 times [2022-01-11 05:44:51,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:51,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215709586] [2022-01-11 05:44:51,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:51,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:51,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:51,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:51,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215709586] [2022-01-11 05:44:51,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215709586] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:51,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:51,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:44:51,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850293573] [2022-01-11 05:44:51,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:51,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:44:51,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:51,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:44:51,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:44:51,904 INFO L87 Difference]: Start difference. First operand 510 states and 856 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:52,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:52,076 INFO L93 Difference]: Finished difference Result 2418 states and 4076 transitions. [2022-01-11 05:44:52,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:44:52,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-11 05:44:52,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:52,085 INFO L225 Difference]: With dead ends: 2418 [2022-01-11 05:44:52,085 INFO L226 Difference]: Without dead ends: 1932 [2022-01-11 05:44:52,088 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 [2022-01-11 05:44:52,092 INFO L933 BasicCegarLoop]: 1635 mSDtfsCounter, 4063 mSDsluCounter, 2440 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4063 SdHoareTripleChecker+Valid, 4075 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 [2022-01-11 05:44:52,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4063 Valid, 4075 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:44:52,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2022-01-11 05:44:52,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 510. [2022-01-11 05:44:52,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 508 states have (on average 1.6830708661417322) internal successors, (855), 509 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:52,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 855 transitions. [2022-01-11 05:44:52,121 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 855 transitions. Word has length 57 [2022-01-11 05:44:52,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:52,121 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 855 transitions. [2022-01-11 05:44:52,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:52,122 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 855 transitions. [2022-01-11 05:44:52,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-11 05:44:52,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:52,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:52,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 05:44:52,125 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:52,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:52,125 INFO L85 PathProgramCache]: Analyzing trace with hash 2136884942, now seen corresponding path program 1 times [2022-01-11 05:44:52,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:52,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086510780] [2022-01-11 05:44:52,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:52,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:52,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:52,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:52,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086510780] [2022-01-11 05:44:52,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086510780] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:52,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:52,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:44:52,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449073921] [2022-01-11 05:44:52,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:52,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:44:52,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:52,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:44:52,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:44:52,274 INFO L87 Difference]: Start difference. First operand 510 states and 855 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:52,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:52,313 INFO L93 Difference]: Finished difference Result 1005 states and 1688 transitions. [2022-01-11 05:44:52,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:44:52,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-11 05:44:52,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:52,315 INFO L225 Difference]: With dead ends: 1005 [2022-01-11 05:44:52,316 INFO L226 Difference]: Without dead ends: 524 [2022-01-11 05:44:52,316 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 [2022-01-11 05:44:52,320 INFO L933 BasicCegarLoop]: 869 mSDtfsCounter, 834 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 891 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 [2022-01-11 05:44:52,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [834 Valid, 891 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:44:52,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-01-11 05:44:52,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 510. [2022-01-11 05:44:52,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 508 states have (on average 1.6811023622047243) internal successors, (854), 509 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:52,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 854 transitions. [2022-01-11 05:44:52,345 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 854 transitions. Word has length 58 [2022-01-11 05:44:52,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:52,346 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 854 transitions. [2022-01-11 05:44:52,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:52,347 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 854 transitions. [2022-01-11 05:44:52,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-11 05:44:52,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:52,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:52,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 05:44:52,348 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:52,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:52,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1324271043, now seen corresponding path program 1 times [2022-01-11 05:44:52,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:52,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580975067] [2022-01-11 05:44:52,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:52,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:52,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:52,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:52,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580975067] [2022-01-11 05:44:52,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580975067] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:52,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:52,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:44:52,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373912448] [2022-01-11 05:44:52,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:52,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:44:52,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:52,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:44:52,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:44:52,462 INFO L87 Difference]: Start difference. First operand 510 states and 854 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:52,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:52,589 INFO L93 Difference]: Finished difference Result 1464 states and 2462 transitions. [2022-01-11 05:44:52,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:44:52,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-11 05:44:52,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:52,593 INFO L225 Difference]: With dead ends: 1464 [2022-01-11 05:44:52,593 INFO L226 Difference]: Without dead ends: 988 [2022-01-11 05:44:52,594 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 [2022-01-11 05:44:52,595 INFO L933 BasicCegarLoop]: 863 mSDtfsCounter, 3986 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3986 SdHoareTripleChecker+Valid, 1740 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 [2022-01-11 05:44:52,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3986 Valid, 1740 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:44:52,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2022-01-11 05:44:52,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 510. [2022-01-11 05:44:52,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 508 states have (on average 1.6771653543307086) internal successors, (852), 509 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:52,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 852 transitions. [2022-01-11 05:44:52,621 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 852 transitions. Word has length 59 [2022-01-11 05:44:52,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:52,621 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 852 transitions. [2022-01-11 05:44:52,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:52,622 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 852 transitions. [2022-01-11 05:44:52,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 05:44:52,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:52,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:52,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 05:44:52,623 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:52,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:52,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1207648992, now seen corresponding path program 1 times [2022-01-11 05:44:52,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:52,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115410390] [2022-01-11 05:44:52,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:52,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:52,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:52,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:52,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115410390] [2022-01-11 05:44:52,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115410390] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:52,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:52,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:44:52,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215677896] [2022-01-11 05:44:52,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:52,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:44:52,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:52,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:44:52,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:44:52,739 INFO L87 Difference]: Start difference. First operand 510 states and 852 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:53,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:53,141 INFO L93 Difference]: Finished difference Result 3173 states and 5200 transitions. [2022-01-11 05:44:53,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:44:53,142 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-11 05:44:53,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:53,170 INFO L225 Difference]: With dead ends: 3173 [2022-01-11 05:44:53,170 INFO L226 Difference]: Without dead ends: 2946 [2022-01-11 05:44:53,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:44:53,172 INFO L933 BasicCegarLoop]: 1233 mSDtfsCounter, 5483 mSDsluCounter, 4930 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5483 SdHoareTripleChecker+Valid, 6163 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:53,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5483 Valid, 6163 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:44:53,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2022-01-11 05:44:53,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 958. [2022-01-11 05:44:53,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 956 states have (on average 1.6788702928870294) internal successors, (1605), 957 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:53,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1605 transitions. [2022-01-11 05:44:53,267 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1605 transitions. Word has length 61 [2022-01-11 05:44:53,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:53,268 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 1605 transitions. [2022-01-11 05:44:53,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:53,268 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1605 transitions. [2022-01-11 05:44:53,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-11 05:44:53,269 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:53,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:53,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 05:44:53,269 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:53,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:53,269 INFO L85 PathProgramCache]: Analyzing trace with hash 185684925, now seen corresponding path program 1 times [2022-01-11 05:44:53,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:53,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844293479] [2022-01-11 05:44:53,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:53,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:53,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:53,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:53,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844293479] [2022-01-11 05:44:53,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844293479] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:53,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:53,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:44:53,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883531294] [2022-01-11 05:44:53,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:53,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:44:53,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:53,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:44:53,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:44:53,384 INFO L87 Difference]: Start difference. First operand 958 states and 1605 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:53,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:53,519 INFO L93 Difference]: Finished difference Result 1695 states and 2771 transitions. [2022-01-11 05:44:53,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:44:53,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-11 05:44:53,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:53,524 INFO L225 Difference]: With dead ends: 1695 [2022-01-11 05:44:53,524 INFO L226 Difference]: Without dead ends: 1275 [2022-01-11 05:44:53,525 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 [2022-01-11 05:44:53,526 INFO L933 BasicCegarLoop]: 838 mSDtfsCounter, 2127 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2127 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:53,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2127 Valid, 2030 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:44:53,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2022-01-11 05:44:53,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 958. [2022-01-11 05:44:53,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 956 states have (on average 1.6746861924686192) internal successors, (1601), 957 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:53,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1601 transitions. [2022-01-11 05:44:53,588 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1601 transitions. Word has length 62 [2022-01-11 05:44:53,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:53,589 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 1601 transitions. [2022-01-11 05:44:53,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:53,589 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1601 transitions. [2022-01-11 05:44:53,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-11 05:44:53,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:53,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:53,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 05:44:53,590 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:53,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:53,591 INFO L85 PathProgramCache]: Analyzing trace with hash -76615032, now seen corresponding path program 1 times [2022-01-11 05:44:53,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:53,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207985146] [2022-01-11 05:44:53,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:53,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:53,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:53,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:53,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207985146] [2022-01-11 05:44:53,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207985146] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:53,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:53,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:44:53,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937818484] [2022-01-11 05:44:53,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:53,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:44:53,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:53,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:44:53,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:44:53,664 INFO L87 Difference]: Start difference. First operand 958 states and 1601 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:53,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:53,840 INFO L93 Difference]: Finished difference Result 2751 states and 4632 transitions. [2022-01-11 05:44:53,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:44:53,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-11 05:44:53,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:53,846 INFO L225 Difference]: With dead ends: 2751 [2022-01-11 05:44:53,847 INFO L226 Difference]: Without dead ends: 1830 [2022-01-11 05:44:53,849 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 [2022-01-11 05:44:53,850 INFO L933 BasicCegarLoop]: 1603 mSDtfsCounter, 2487 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2487 SdHoareTripleChecker+Valid, 2406 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 [2022-01-11 05:44:53,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2487 Valid, 2406 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:44:53,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2022-01-11 05:44:53,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 958. [2022-01-11 05:44:53,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 956 states have (on average 1.6725941422594142) internal successors, (1599), 957 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:53,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1599 transitions. [2022-01-11 05:44:53,963 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1599 transitions. Word has length 62 [2022-01-11 05:44:53,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:53,963 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 1599 transitions. [2022-01-11 05:44:53,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:53,964 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1599 transitions. [2022-01-11 05:44:53,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 05:44:53,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:53,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:53,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 05:44:53,966 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:53,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:53,966 INFO L85 PathProgramCache]: Analyzing trace with hash 758117100, now seen corresponding path program 1 times [2022-01-11 05:44:53,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:53,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612139931] [2022-01-11 05:44:53,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:53,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:54,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:54,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:54,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612139931] [2022-01-11 05:44:54,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612139931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:54,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:54,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:44:54,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495394551] [2022-01-11 05:44:54,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:54,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 05:44:54,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:54,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 05:44:54,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:44:54,094 INFO L87 Difference]: Start difference. First operand 958 states and 1599 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:54,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:54,846 INFO L93 Difference]: Finished difference Result 4198 states and 6700 transitions. [2022-01-11 05:44:54,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-11 05:44:54,846 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-11 05:44:54,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:54,857 INFO L225 Difference]: With dead ends: 4198 [2022-01-11 05:44:54,857 INFO L226 Difference]: Without dead ends: 3820 [2022-01-11 05:44:54,858 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 [2022-01-11 05:44:54,861 INFO L933 BasicCegarLoop]: 1045 mSDtfsCounter, 7740 mSDsluCounter, 6160 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7740 SdHoareTripleChecker+Valid, 7205 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:54,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7740 Valid, 7205 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:44:54,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3820 states. [2022-01-11 05:44:54,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3820 to 1823. [2022-01-11 05:44:54,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1821 states have (on average 1.6842394288852278) internal successors, (3067), 1822 states have internal predecessors, (3067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:54,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 3067 transitions. [2022-01-11 05:44:54,997 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 3067 transitions. Word has length 63 [2022-01-11 05:44:54,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:54,997 INFO L470 AbstractCegarLoop]: Abstraction has 1823 states and 3067 transitions. [2022-01-11 05:44:54,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:54,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 3067 transitions. [2022-01-11 05:44:54,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 05:44:54,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:54,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:54,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 05:44:54,999 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:55,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:55,000 INFO L85 PathProgramCache]: Analyzing trace with hash -165748602, now seen corresponding path program 1 times [2022-01-11 05:44:55,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:55,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355061641] [2022-01-11 05:44:55,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:55,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:55,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:55,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355061641] [2022-01-11 05:44:55,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355061641] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:55,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:55,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:44:55,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668223921] [2022-01-11 05:44:55,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:55,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 05:44:55,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:55,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 05:44:55,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:44:55,166 INFO L87 Difference]: Start difference. First operand 1823 states and 3067 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:56,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:56,197 INFO L93 Difference]: Finished difference Result 7302 states and 11734 transitions. [2022-01-11 05:44:56,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-11 05:44:56,198 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-11 05:44:56,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:56,218 INFO L225 Difference]: With dead ends: 7302 [2022-01-11 05:44:56,218 INFO L226 Difference]: Without dead ends: 6583 [2022-01-11 05:44:56,220 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 [2022-01-11 05:44:56,221 INFO L933 BasicCegarLoop]: 905 mSDtfsCounter, 6177 mSDsluCounter, 6232 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6177 SdHoareTripleChecker+Valid, 7137 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:56,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6177 Valid, 7137 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:44:56,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2022-01-11 05:44:56,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 3558. [2022-01-11 05:44:56,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3556 states have (on average 1.6903824521934758) internal successors, (6011), 3557 states have internal predecessors, (6011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:56,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 6011 transitions. [2022-01-11 05:44:56,501 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 6011 transitions. Word has length 64 [2022-01-11 05:44:56,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:56,501 INFO L470 AbstractCegarLoop]: Abstraction has 3558 states and 6011 transitions. [2022-01-11 05:44:56,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:56,501 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 6011 transitions. [2022-01-11 05:44:56,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 05:44:56,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:56,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:56,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 05:44:56,503 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:56,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:56,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1341803207, now seen corresponding path program 1 times [2022-01-11 05:44:56,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:56,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904524260] [2022-01-11 05:44:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:56,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:56,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:56,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:56,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904524260] [2022-01-11 05:44:56,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904524260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:56,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:56,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:44:56,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950826875] [2022-01-11 05:44:56,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:56,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:44:56,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:56,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:44:56,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:44:56,587 INFO L87 Difference]: Start difference. First operand 3558 states and 6011 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:57,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:57,887 INFO L93 Difference]: Finished difference Result 12858 states and 20573 transitions. [2022-01-11 05:44:57,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:44:57,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-11 05:44:57,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:57,915 INFO L225 Difference]: With dead ends: 12858 [2022-01-11 05:44:57,916 INFO L226 Difference]: Without dead ends: 11612 [2022-01-11 05:44:57,919 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 [2022-01-11 05:44:57,919 INFO L933 BasicCegarLoop]: 851 mSDtfsCounter, 3206 mSDsluCounter, 2478 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3206 SdHoareTripleChecker+Valid, 3329 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:57,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3206 Valid, 3329 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:44:57,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11612 states. [2022-01-11 05:44:58,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11612 to 5138. [2022-01-11 05:44:58,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5138 states, 5136 states have (on average 1.6584890965732086) internal successors, (8518), 5137 states have internal predecessors, (8518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:58,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5138 states to 5138 states and 8518 transitions. [2022-01-11 05:44:58,387 INFO L78 Accepts]: Start accepts. Automaton has 5138 states and 8518 transitions. Word has length 64 [2022-01-11 05:44:58,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:58,387 INFO L470 AbstractCegarLoop]: Abstraction has 5138 states and 8518 transitions. [2022-01-11 05:44:58,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:58,387 INFO L276 IsEmpty]: Start isEmpty. Operand 5138 states and 8518 transitions. [2022-01-11 05:44:58,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 05:44:58,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:58,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:58,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 05:44:58,391 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:58,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:58,391 INFO L85 PathProgramCache]: Analyzing trace with hash 865331642, now seen corresponding path program 1 times [2022-01-11 05:44:58,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:58,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971356741] [2022-01-11 05:44:58,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:58,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:58,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:58,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:58,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971356741] [2022-01-11 05:44:58,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971356741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:58,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:58,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:44:58,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092968647] [2022-01-11 05:44:58,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:58,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 05:44:58,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:58,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 05:44:58,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:44:58,487 INFO L87 Difference]: Start difference. First operand 5138 states and 8518 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:59,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:59,274 INFO L93 Difference]: Finished difference Result 9365 states and 15093 transitions. [2022-01-11 05:44:59,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 05:44:59,275 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-11 05:44:59,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:59,326 INFO L225 Difference]: With dead ends: 9365 [2022-01-11 05:44:59,327 INFO L226 Difference]: Without dead ends: 6861 [2022-01-11 05:44:59,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2022-01-11 05:44:59,340 INFO L933 BasicCegarLoop]: 845 mSDtfsCounter, 2895 mSDsluCounter, 3329 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2895 SdHoareTripleChecker+Valid, 4174 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:59,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2895 Valid, 4174 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:44:59,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6861 states. [2022-01-11 05:44:59,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6861 to 5082. [2022-01-11 05:44:59,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5082 states, 5080 states have (on average 1.654724409448819) internal successors, (8406), 5081 states have internal predecessors, (8406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:59,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5082 states to 5082 states and 8406 transitions. [2022-01-11 05:44:59,949 INFO L78 Accepts]: Start accepts. Automaton has 5082 states and 8406 transitions. Word has length 65 [2022-01-11 05:44:59,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:59,949 INFO L470 AbstractCegarLoop]: Abstraction has 5082 states and 8406 transitions. [2022-01-11 05:44:59,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:59,950 INFO L276 IsEmpty]: Start isEmpty. Operand 5082 states and 8406 transitions. [2022-01-11 05:44:59,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 05:44:59,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:59,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:59,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 05:44:59,953 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:59,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:59,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1712827783, now seen corresponding path program 1 times [2022-01-11 05:44:59,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:59,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132796620] [2022-01-11 05:44:59,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:59,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:00,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:00,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:00,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132796620] [2022-01-11 05:45:00,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132796620] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:00,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:00,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:45:00,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599850990] [2022-01-11 05:45:00,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:00,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 05:45:00,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:00,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 05:45:00,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:45:00,066 INFO L87 Difference]: Start difference. First operand 5082 states and 8406 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:03,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:03,560 INFO L93 Difference]: Finished difference Result 23776 states and 37713 transitions. [2022-01-11 05:45:03,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-11 05:45:03,561 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 05:45:03,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:03,595 INFO L225 Difference]: With dead ends: 23776 [2022-01-11 05:45:03,595 INFO L226 Difference]: Without dead ends: 23666 [2022-01-11 05:45:03,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2022-01-11 05:45:03,603 INFO L933 BasicCegarLoop]: 1789 mSDtfsCounter, 3240 mSDsluCounter, 8589 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3240 SdHoareTripleChecker+Valid, 10378 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:03,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3240 Valid, 10378 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:45:03,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23666 states. [2022-01-11 05:45:04,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23666 to 6740. [2022-01-11 05:45:04,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6740 states, 6738 states have (on average 1.6386168002374593) internal successors, (11041), 6739 states have internal predecessors, (11041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:04,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6740 states to 6740 states and 11041 transitions. [2022-01-11 05:45:04,478 INFO L78 Accepts]: Start accepts. Automaton has 6740 states and 11041 transitions. Word has length 66 [2022-01-11 05:45:04,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:04,479 INFO L470 AbstractCegarLoop]: Abstraction has 6740 states and 11041 transitions. [2022-01-11 05:45:04,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:04,479 INFO L276 IsEmpty]: Start isEmpty. Operand 6740 states and 11041 transitions. [2022-01-11 05:45:04,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 05:45:04,483 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:04,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:45:04,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 05:45:04,483 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:04,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:04,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1559003375, now seen corresponding path program 1 times [2022-01-11 05:45:04,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:04,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833788229] [2022-01-11 05:45:04,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:04,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:04,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:04,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:04,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833788229] [2022-01-11 05:45:04,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833788229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:04,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:04,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:45:04,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137768291] [2022-01-11 05:45:04,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:04,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:45:04,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:04,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:45:04,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:45:04,563 INFO L87 Difference]: Start difference. First operand 6740 states and 11041 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:07,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:07,265 INFO L93 Difference]: Finished difference Result 19617 states and 31170 transitions. [2022-01-11 05:45:07,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:45:07,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-11 05:45:07,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:07,295 INFO L225 Difference]: With dead ends: 19617 [2022-01-11 05:45:07,295 INFO L226 Difference]: Without dead ends: 17745 [2022-01-11 05:45:07,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:45:07,301 INFO L933 BasicCegarLoop]: 878 mSDtfsCounter, 3005 mSDsluCounter, 3133 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3005 SdHoareTripleChecker+Valid, 4011 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:07,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3005 Valid, 4011 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:45:07,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17745 states. [2022-01-11 05:45:08,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17745 to 6890. [2022-01-11 05:45:08,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6890 states, 6888 states have (on average 1.6350174216027875) internal successors, (11262), 6889 states have internal predecessors, (11262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:08,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6890 states to 6890 states and 11262 transitions. [2022-01-11 05:45:08,199 INFO L78 Accepts]: Start accepts. Automaton has 6890 states and 11262 transitions. Word has length 67 [2022-01-11 05:45:08,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:08,199 INFO L470 AbstractCegarLoop]: Abstraction has 6890 states and 11262 transitions. [2022-01-11 05:45:08,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:08,200 INFO L276 IsEmpty]: Start isEmpty. Operand 6890 states and 11262 transitions. [2022-01-11 05:45:08,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 05:45:08,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:08,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:45:08,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 05:45:08,203 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:08,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:08,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1085682142, now seen corresponding path program 1 times [2022-01-11 05:45:08,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:08,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150679789] [2022-01-11 05:45:08,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:08,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:08,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:08,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:08,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150679789] [2022-01-11 05:45:08,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150679789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:08,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:08,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:45:08,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497154140] [2022-01-11 05:45:08,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:08,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:45:08,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:08,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:45:08,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:45:08,301 INFO L87 Difference]: Start difference. First operand 6890 states and 11262 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:11,256 INFO L93 Difference]: Finished difference Result 19627 states and 31157 transitions. [2022-01-11 05:45:11,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:45:11,256 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-11 05:45:11,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:11,295 INFO L225 Difference]: With dead ends: 19627 [2022-01-11 05:45:11,295 INFO L226 Difference]: Without dead ends: 17668 [2022-01-11 05:45:11,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:45:11,323 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 2980 mSDsluCounter, 3133 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2980 SdHoareTripleChecker+Valid, 4019 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:11,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2980 Valid, 4019 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:45:11,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17668 states. [2022-01-11 05:45:12,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17668 to 6850. [2022-01-11 05:45:12,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6850 states, 6848 states have (on average 1.6358060747663552) internal successors, (11202), 6849 states have internal predecessors, (11202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:12,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6850 states to 6850 states and 11202 transitions. [2022-01-11 05:45:12,350 INFO L78 Accepts]: Start accepts. Automaton has 6850 states and 11202 transitions. Word has length 68 [2022-01-11 05:45:12,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:12,351 INFO L470 AbstractCegarLoop]: Abstraction has 6850 states and 11202 transitions. [2022-01-11 05:45:12,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:12,351 INFO L276 IsEmpty]: Start isEmpty. Operand 6850 states and 11202 transitions. [2022-01-11 05:45:12,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 05:45:12,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:12,354 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:45:12,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 05:45:12,354 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:12,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:12,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1256703634, now seen corresponding path program 1 times [2022-01-11 05:45:12,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:12,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834360854] [2022-01-11 05:45:12,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:12,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:12,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:12,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:12,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834360854] [2022-01-11 05:45:12,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834360854] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:12,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:12,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:45:12,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186407717] [2022-01-11 05:45:12,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:12,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:45:12,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:12,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:45:12,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:45:12,432 INFO L87 Difference]: Start difference. First operand 6850 states and 11202 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:14,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:14,409 INFO L93 Difference]: Finished difference Result 14433 states and 23035 transitions. [2022-01-11 05:45:14,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:45:14,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-11 05:45:14,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:14,445 INFO L225 Difference]: With dead ends: 14433 [2022-01-11 05:45:14,445 INFO L226 Difference]: Without dead ends: 12283 [2022-01-11 05:45:14,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:45:14,463 INFO L933 BasicCegarLoop]: 1109 mSDtfsCounter, 2149 mSDsluCounter, 3461 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2149 SdHoareTripleChecker+Valid, 4570 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:14,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2149 Valid, 4570 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:45:14,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12283 states. [2022-01-11 05:45:15,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12283 to 7173. [2022-01-11 05:45:15,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7173 states, 7171 states have (on average 1.6325477618184354) internal successors, (11707), 7172 states have internal predecessors, (11707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7173 states to 7173 states and 11707 transitions. [2022-01-11 05:45:15,508 INFO L78 Accepts]: Start accepts. Automaton has 7173 states and 11707 transitions. Word has length 68 [2022-01-11 05:45:15,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:15,510 INFO L470 AbstractCegarLoop]: Abstraction has 7173 states and 11707 transitions. [2022-01-11 05:45:15,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:15,510 INFO L276 IsEmpty]: Start isEmpty. Operand 7173 states and 11707 transitions. [2022-01-11 05:45:15,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 05:45:15,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:15,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:45:15,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 05:45:15,514 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:15,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:15,515 INFO L85 PathProgramCache]: Analyzing trace with hash 181085435, now seen corresponding path program 1 times [2022-01-11 05:45:15,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:15,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620873268] [2022-01-11 05:45:15,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:15,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:15,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:15,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:15,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620873268] [2022-01-11 05:45:15,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620873268] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:15,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:15,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:45:15,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563318715] [2022-01-11 05:45:15,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:15,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:45:15,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:15,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:45:15,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:45:15,588 INFO L87 Difference]: Start difference. First operand 7173 states and 11707 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:16,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:16,913 INFO L93 Difference]: Finished difference Result 11551 states and 18550 transitions. [2022-01-11 05:45:16,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:45:16,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-11 05:45:16,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:16,922 INFO L225 Difference]: With dead ends: 11551 [2022-01-11 05:45:16,922 INFO L226 Difference]: Without dead ends: 8001 [2022-01-11 05:45:16,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:45:16,926 INFO L933 BasicCegarLoop]: 1105 mSDtfsCounter, 924 mSDsluCounter, 1860 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 2965 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:16,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 2965 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:45:16,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8001 states. [2022-01-11 05:45:17,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8001 to 5542. [2022-01-11 05:45:17,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5542 states, 5540 states have (on average 1.6411552346570397) internal successors, (9092), 5541 states have internal predecessors, (9092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:17,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5542 states to 5542 states and 9092 transitions. [2022-01-11 05:45:17,635 INFO L78 Accepts]: Start accepts. Automaton has 5542 states and 9092 transitions. Word has length 68 [2022-01-11 05:45:17,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:17,635 INFO L470 AbstractCegarLoop]: Abstraction has 5542 states and 9092 transitions. [2022-01-11 05:45:17,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:17,635 INFO L276 IsEmpty]: Start isEmpty. Operand 5542 states and 9092 transitions. [2022-01-11 05:45:17,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 05:45:17,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:17,639 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] [2022-01-11 05:45:17,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 05:45:17,639 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:17,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:17,640 INFO L85 PathProgramCache]: Analyzing trace with hash 440108686, now seen corresponding path program 1 times [2022-01-11 05:45:17,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:17,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679788865] [2022-01-11 05:45:17,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:17,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:17,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:17,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:17,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679788865] [2022-01-11 05:45:17,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679788865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:17,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:17,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:45:17,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387371144] [2022-01-11 05:45:17,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:17,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 05:45:17,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:17,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 05:45:17,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:45:17,778 INFO L87 Difference]: Start difference. First operand 5542 states and 9092 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:19,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:19,760 INFO L93 Difference]: Finished difference Result 11404 states and 18212 transitions. [2022-01-11 05:45:19,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-11 05:45:19,760 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 05:45:19,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:19,771 INFO L225 Difference]: With dead ends: 11404 [2022-01-11 05:45:19,772 INFO L226 Difference]: Without dead ends: 10669 [2022-01-11 05:45:19,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2022-01-11 05:45:19,774 INFO L933 BasicCegarLoop]: 1100 mSDtfsCounter, 4197 mSDsluCounter, 5491 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4197 SdHoareTripleChecker+Valid, 6591 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:19,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4197 Valid, 6591 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:45:19,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10669 states. [2022-01-11 05:45:20,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10669 to 5567. [2022-01-11 05:45:20,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5567 states, 5565 states have (on average 1.6382749326145551) internal successors, (9117), 5566 states have internal predecessors, (9117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:20,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5567 states to 5567 states and 9117 transitions. [2022-01-11 05:45:20,531 INFO L78 Accepts]: Start accepts. Automaton has 5567 states and 9117 transitions. Word has length 69 [2022-01-11 05:45:20,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:20,531 INFO L470 AbstractCegarLoop]: Abstraction has 5567 states and 9117 transitions. [2022-01-11 05:45:20,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:20,531 INFO L276 IsEmpty]: Start isEmpty. Operand 5567 states and 9117 transitions. [2022-01-11 05:45:20,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 05:45:20,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:20,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:45:20,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 05:45:20,534 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:20,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:20,534 INFO L85 PathProgramCache]: Analyzing trace with hash 759685151, now seen corresponding path program 1 times [2022-01-11 05:45:20,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:20,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488913533] [2022-01-11 05:45:20,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:20,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:20,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:20,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:20,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488913533] [2022-01-11 05:45:20,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488913533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:20,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:20,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:45:20,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969950090] [2022-01-11 05:45:20,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:20,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:45:20,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:20,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:45:20,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:45:20,670 INFO L87 Difference]: Start difference. First operand 5567 states and 9117 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:22,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:22,707 INFO L93 Difference]: Finished difference Result 11611 states and 18517 transitions. [2022-01-11 05:45:22,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:45:22,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-11 05:45:22,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:22,718 INFO L225 Difference]: With dead ends: 11611 [2022-01-11 05:45:22,719 INFO L226 Difference]: Without dead ends: 8895 [2022-01-11 05:45:22,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:45:22,723 INFO L933 BasicCegarLoop]: 1097 mSDtfsCounter, 2042 mSDsluCounter, 3396 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2042 SdHoareTripleChecker+Valid, 4493 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:22,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2042 Valid, 4493 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:45:22,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8895 states. [2022-01-11 05:45:23,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8895 to 5320. [2022-01-11 05:45:23,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5320 states, 5319 states have (on average 1.641661966535063) internal successors, (8732), 5319 states have internal predecessors, (8732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:23,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5320 states to 5320 states and 8732 transitions. [2022-01-11 05:45:23,509 INFO L78 Accepts]: Start accepts. Automaton has 5320 states and 8732 transitions. Word has length 70 [2022-01-11 05:45:23,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:23,509 INFO L470 AbstractCegarLoop]: Abstraction has 5320 states and 8732 transitions. [2022-01-11 05:45:23,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:23,510 INFO L276 IsEmpty]: Start isEmpty. Operand 5320 states and 8732 transitions. [2022-01-11 05:45:23,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-11 05:45:23,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:23,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:45:23,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 05:45:23,516 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:23,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:23,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2039569372, now seen corresponding path program 1 times [2022-01-11 05:45:23,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:23,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931459624] [2022-01-11 05:45:23,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:23,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:23,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:23,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931459624] [2022-01-11 05:45:23,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931459624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:23,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:23,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:45:23,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964935852] [2022-01-11 05:45:23,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:23,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:45:23,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:23,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:45:23,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:45:23,581 INFO L87 Difference]: Start difference. First operand 5320 states and 8732 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:24,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:24,572 INFO L93 Difference]: Finished difference Result 7148 states and 11485 transitions. [2022-01-11 05:45:24,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:45:24,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2022-01-11 05:45:24,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:24,580 INFO L225 Difference]: With dead ends: 7148 [2022-01-11 05:45:24,580 INFO L226 Difference]: Without dead ends: 6203 [2022-01-11 05:45:24,581 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 [2022-01-11 05:45:24,582 INFO L933 BasicCegarLoop]: 833 mSDtfsCounter, 911 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 1911 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 [2022-01-11 05:45:24,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [911 Valid, 1911 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:45:24,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6203 states. [2022-01-11 05:45:25,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6203 to 5320. [2022-01-11 05:45:25,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5320 states, 5319 states have (on average 1.6412859560067683) internal successors, (8730), 5319 states have internal predecessors, (8730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:25,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5320 states to 5320 states and 8730 transitions. [2022-01-11 05:45:25,367 INFO L78 Accepts]: Start accepts. Automaton has 5320 states and 8730 transitions. Word has length 117 [2022-01-11 05:45:25,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:25,367 INFO L470 AbstractCegarLoop]: Abstraction has 5320 states and 8730 transitions. [2022-01-11 05:45:25,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:25,367 INFO L276 IsEmpty]: Start isEmpty. Operand 5320 states and 8730 transitions. [2022-01-11 05:45:25,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-11 05:45:25,373 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:25,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:45:25,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 05:45:25,374 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:25,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:25,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1835881093, now seen corresponding path program 1 times [2022-01-11 05:45:25,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:25,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738387054] [2022-01-11 05:45:25,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:25,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:25,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:25,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:25,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738387054] [2022-01-11 05:45:25,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738387054] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:25,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:25,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:45:25,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540962180] [2022-01-11 05:45:25,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:25,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:45:25,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:25,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:45:25,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:45:25,462 INFO L87 Difference]: Start difference. First operand 5320 states and 8730 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:26,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:26,912 INFO L93 Difference]: Finished difference Result 8442 states and 13532 transitions. [2022-01-11 05:45:26,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:45:26,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2022-01-11 05:45:26,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:26,921 INFO L225 Difference]: With dead ends: 8442 [2022-01-11 05:45:26,921 INFO L226 Difference]: Without dead ends: 7709 [2022-01-11 05:45:26,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:45:26,924 INFO L933 BasicCegarLoop]: 1479 mSDtfsCounter, 1342 mSDsluCounter, 2923 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 4402 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:26,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1342 Valid, 4402 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:45:26,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7709 states. [2022-01-11 05:45:27,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7709 to 5528. [2022-01-11 05:45:27,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5528 states, 5527 states have (on average 1.6374163198842049) internal successors, (9050), 5527 states have internal predecessors, (9050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:27,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5528 states to 5528 states and 9050 transitions. [2022-01-11 05:45:27,746 INFO L78 Accepts]: Start accepts. Automaton has 5528 states and 9050 transitions. Word has length 117 [2022-01-11 05:45:27,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:27,746 INFO L470 AbstractCegarLoop]: Abstraction has 5528 states and 9050 transitions. [2022-01-11 05:45:27,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:27,747 INFO L276 IsEmpty]: Start isEmpty. Operand 5528 states and 9050 transitions. [2022-01-11 05:45:27,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-11 05:45:27,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:27,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:45:27,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 05:45:27,753 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:27,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:27,753 INFO L85 PathProgramCache]: Analyzing trace with hash -891332337, now seen corresponding path program 1 times [2022-01-11 05:45:27,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:27,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396204635] [2022-01-11 05:45:27,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:27,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:27,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:27,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:27,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396204635] [2022-01-11 05:45:27,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396204635] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:27,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:27,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:45:27,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858847344] [2022-01-11 05:45:27,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:27,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:45:27,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:27,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:45:27,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:45:27,845 INFO L87 Difference]: Start difference. First operand 5528 states and 9050 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:32,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:32,159 INFO L93 Difference]: Finished difference Result 21088 states and 32709 transitions. [2022-01-11 05:45:32,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:45:32,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2022-01-11 05:45:32,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:32,180 INFO L225 Difference]: With dead ends: 21088 [2022-01-11 05:45:32,180 INFO L226 Difference]: Without dead ends: 18989 [2022-01-11 05:45:32,184 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 [2022-01-11 05:45:32,185 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 2517 mSDsluCounter, 2774 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2517 SdHoareTripleChecker+Valid, 3611 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:32,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2517 Valid, 3611 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:45:32,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18989 states. [2022-01-11 05:45:33,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18989 to 7496. [2022-01-11 05:45:33,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7496 states, 7495 states have (on average 1.6220146764509673) internal successors, (12157), 7495 states have internal predecessors, (12157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:33,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7496 states to 7496 states and 12157 transitions. [2022-01-11 05:45:33,513 INFO L78 Accepts]: Start accepts. Automaton has 7496 states and 12157 transitions. Word has length 118 [2022-01-11 05:45:33,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:33,514 INFO L470 AbstractCegarLoop]: Abstraction has 7496 states and 12157 transitions. [2022-01-11 05:45:33,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:33,514 INFO L276 IsEmpty]: Start isEmpty. Operand 7496 states and 12157 transitions. [2022-01-11 05:45:33,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-11 05:45:33,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:33,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:45:33,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 05:45:33,525 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:33,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:33,526 INFO L85 PathProgramCache]: Analyzing trace with hash -902354019, now seen corresponding path program 1 times [2022-01-11 05:45:33,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:33,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788572256] [2022-01-11 05:45:33,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:33,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:33,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:33,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:33,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788572256] [2022-01-11 05:45:33,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788572256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:33,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:33,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:45:33,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831303557] [2022-01-11 05:45:33,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:33,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:45:33,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:33,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:45:33,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:45:33,622 INFO L87 Difference]: Start difference. First operand 7496 states and 12157 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:37,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:37,074 INFO L93 Difference]: Finished difference Result 17015 states and 26514 transitions. [2022-01-11 05:45:37,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:45:37,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2022-01-11 05:45:37,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:37,096 INFO L225 Difference]: With dead ends: 17015 [2022-01-11 05:45:37,096 INFO L226 Difference]: Without dead ends: 14820 [2022-01-11 05:45:37,101 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 [2022-01-11 05:45:37,102 INFO L933 BasicCegarLoop]: 1020 mSDtfsCounter, 1304 mSDsluCounter, 3006 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1304 SdHoareTripleChecker+Valid, 4026 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:37,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1304 Valid, 4026 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:45:37,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14820 states. [2022-01-11 05:45:38,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14820 to 7560. [2022-01-11 05:45:38,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7560 states, 7559 states have (on average 1.6167482471226353) internal successors, (12221), 7559 states have internal predecessors, (12221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:38,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7560 states to 7560 states and 12221 transitions. [2022-01-11 05:45:38,399 INFO L78 Accepts]: Start accepts. Automaton has 7560 states and 12221 transitions. Word has length 119 [2022-01-11 05:45:38,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:38,399 INFO L470 AbstractCegarLoop]: Abstraction has 7560 states and 12221 transitions. [2022-01-11 05:45:38,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:38,400 INFO L276 IsEmpty]: Start isEmpty. Operand 7560 states and 12221 transitions. [2022-01-11 05:45:38,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-11 05:45:38,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:38,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:45:38,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 05:45:38,408 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:38,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:38,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1805163779, now seen corresponding path program 1 times [2022-01-11 05:45:38,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:38,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400920649] [2022-01-11 05:45:38,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:38,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:38,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:38,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:38,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400920649] [2022-01-11 05:45:38,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400920649] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:38,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:38,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:45:38,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974094946] [2022-01-11 05:45:38,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:38,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:45:38,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:38,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:45:38,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:45:38,494 INFO L87 Difference]: Start difference. First operand 7560 states and 12221 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:44,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:44,992 INFO L93 Difference]: Finished difference Result 28072 states and 43593 transitions. [2022-01-11 05:45:44,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 05:45:44,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2022-01-11 05:45:44,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:45,029 INFO L225 Difference]: With dead ends: 28072 [2022-01-11 05:45:45,029 INFO L226 Difference]: Without dead ends: 24085 [2022-01-11 05:45:45,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-01-11 05:45:45,040 INFO L933 BasicCegarLoop]: 1029 mSDtfsCounter, 2706 mSDsluCounter, 3688 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2706 SdHoareTripleChecker+Valid, 4717 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:45,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2706 Valid, 4717 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:45:45,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24085 states. [2022-01-11 05:45:46,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24085 to 8596. [2022-01-11 05:45:46,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8596 states, 8595 states have (on average 1.6103548574752764) internal successors, (13841), 8595 states have internal predecessors, (13841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:46,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 13841 transitions. [2022-01-11 05:45:46,708 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 13841 transitions. Word has length 119 [2022-01-11 05:45:46,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:46,709 INFO L470 AbstractCegarLoop]: Abstraction has 8596 states and 13841 transitions. [2022-01-11 05:45:46,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:46,709 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 13841 transitions. [2022-01-11 05:45:46,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-11 05:45:46,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:46,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:45:46,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 05:45:46,722 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:46,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:46,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1447800681, now seen corresponding path program 1 times [2022-01-11 05:45:46,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:46,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325298528] [2022-01-11 05:45:46,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:46,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:46,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:46,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325298528] [2022-01-11 05:45:46,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325298528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:46,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:46,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-11 05:45:46,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780747525] [2022-01-11 05:45:46,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:46,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 05:45:46,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:46,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 05:45:46,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-11 05:45:46,856 INFO L87 Difference]: Start difference. First operand 8596 states and 13841 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 10 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:49,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:49,014 INFO L93 Difference]: Finished difference Result 13610 states and 21459 transitions. [2022-01-11 05:45:49,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-11 05:45:49,014 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 10 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2022-01-11 05:45:49,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:49,026 INFO L225 Difference]: With dead ends: 13610 [2022-01-11 05:45:49,026 INFO L226 Difference]: Without dead ends: 9623 [2022-01-11 05:45:49,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2022-01-11 05:45:49,030 INFO L933 BasicCegarLoop]: 814 mSDtfsCounter, 3130 mSDsluCounter, 4286 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3130 SdHoareTripleChecker+Valid, 5100 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:49,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3130 Valid, 5100 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:45:49,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9623 states. [2022-01-11 05:45:50,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9623 to 7496. [2022-01-11 05:45:50,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7496 states, 7495 states have (on average 1.60920613742495) internal successors, (12061), 7495 states have internal predecessors, (12061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:50,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7496 states to 7496 states and 12061 transitions. [2022-01-11 05:45:50,381 INFO L78 Accepts]: Start accepts. Automaton has 7496 states and 12061 transitions. Word has length 120 [2022-01-11 05:45:50,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:50,381 INFO L470 AbstractCegarLoop]: Abstraction has 7496 states and 12061 transitions. [2022-01-11 05:45:50,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 10 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:50,381 INFO L276 IsEmpty]: Start isEmpty. Operand 7496 states and 12061 transitions. [2022-01-11 05:45:50,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-11 05:45:50,391 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:50,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:45:50,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 05:45:50,391 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:50,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:50,391 INFO L85 PathProgramCache]: Analyzing trace with hash 905631087, now seen corresponding path program 1 times [2022-01-11 05:45:50,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:50,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623931062] [2022-01-11 05:45:50,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:50,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:50,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:50,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:50,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623931062] [2022-01-11 05:45:50,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623931062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:50,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:50,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:45:50,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320562967] [2022-01-11 05:45:50,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:50,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:45:50,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:50,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:45:50,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:45:50,508 INFO L87 Difference]: Start difference. First operand 7496 states and 12061 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:55,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:55,047 INFO L93 Difference]: Finished difference Result 22743 states and 35319 transitions. [2022-01-11 05:45:55,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:45:55,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-01-11 05:45:55,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:55,070 INFO L225 Difference]: With dead ends: 22743 [2022-01-11 05:45:55,071 INFO L226 Difference]: Without dead ends: 17735 [2022-01-11 05:45:55,079 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 [2022-01-11 05:45:55,079 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 937 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:55,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [937 Valid, 2786 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:45:55,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17735 states. [2022-01-11 05:45:56,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17735 to 7556. [2022-01-11 05:45:56,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7556 states, 7555 states have (on average 1.6043679682329584) internal successors, (12121), 7555 states have internal predecessors, (12121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:56,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7556 states to 7556 states and 12121 transitions. [2022-01-11 05:45:56,713 INFO L78 Accepts]: Start accepts. Automaton has 7556 states and 12121 transitions. Word has length 122 [2022-01-11 05:45:56,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:56,713 INFO L470 AbstractCegarLoop]: Abstraction has 7556 states and 12121 transitions. [2022-01-11 05:45:56,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:56,713 INFO L276 IsEmpty]: Start isEmpty. Operand 7556 states and 12121 transitions. [2022-01-11 05:45:56,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-11 05:45:56,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:56,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:45:56,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 05:45:56,724 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:56,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:56,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1995378998, now seen corresponding path program 1 times [2022-01-11 05:45:56,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:56,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55608435] [2022-01-11 05:45:56,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:56,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:56,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:56,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:56,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55608435] [2022-01-11 05:45:56,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55608435] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:56,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:56,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:45:56,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106964506] [2022-01-11 05:45:56,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:56,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 05:45:56,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:56,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 05:45:56,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:45:56,859 INFO L87 Difference]: Start difference. First operand 7556 states and 12121 transitions. Second operand has 8 states, 8 states have (on average 15.25) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)