/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec9_product15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:21:42,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:21:42,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:21:42,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:21:42,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:21:42,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:21:42,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:21:42,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:21:42,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:21:42,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:21:42,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:21:42,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:21:42,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:21:42,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:21:42,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:21:42,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:21:42,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:21:42,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:21:42,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:21:42,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:21:42,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:21:42,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:21:42,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:21:42,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:21:42,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:21:42,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:21:42,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:21:42,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:21:42,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:21:42,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:21:42,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:21:42,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:21:42,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:21:42,982 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:21:42,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:21:42,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:21:42,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:21:42,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:21:42,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:21:42,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:21:42,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:21:42,987 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:21:43,005 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:21:43,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:21:43,006 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:21:43,006 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:21:43,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:21:43,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:21:43,007 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:21:43,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:21:43,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:21:43,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:21:43,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:21:43,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:21:43,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:21:43,008 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:21:43,009 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:21:43,009 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:21:43,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:21:43,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:21:43,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:21:43,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:21:43,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:21:43,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:21:43,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:21:43,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:21:43,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:21:43,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:21:43,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:21:43,011 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:21:43,011 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:21:43,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:21:43,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:21:43,012 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:21:43,012 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:21:43,012 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:21:43,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:21:43,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:21:43,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:21:43,250 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:21:43,250 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:21:43,251 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product15.cil.c [2022-01-10 12:21:43,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c49897aa/690abd52b5bc48fead787cc7af47cc89/FLAGf57e975ac [2022-01-10 12:21:43,826 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:21:43,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product15.cil.c [2022-01-10 12:21:43,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c49897aa/690abd52b5bc48fead787cc7af47cc89/FLAGf57e975ac [2022-01-10 12:21:44,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c49897aa/690abd52b5bc48fead787cc7af47cc89 [2022-01-10 12:21:44,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:21:44,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:21:44,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:21:44,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:21:44,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:21:44,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:21:44" (1/1) ... [2022-01-10 12:21:44,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@493765d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:44, skipping insertion in model container [2022-01-10 12:21:44,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:21:44" (1/1) ... [2022-01-10 12:21:44,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:21:44,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:21:44,544 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_spec9_product15.cil.c[51080,51093] [2022-01-10 12:21:44,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:21:44,628 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:21:44,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:21:44,690 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_spec9_product15.cil.c[51080,51093] [2022-01-10 12:21:44,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:21:44,710 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:21:44,757 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_spec9_product15.cil.c[51080,51093] [2022-01-10 12:21:44,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:21:44,816 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:21:44,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:44 WrapperNode [2022-01-10 12:21:44,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:21:44,817 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:21:44,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:21:44,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:21:44,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:44" (1/1) ... [2022-01-10 12:21:44,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:44" (1/1) ... [2022-01-10 12:21:44,923 INFO L137 Inliner]: procedures = 128, calls = 201, calls flagged for inlining = 111, calls inlined = 129, statements flattened = 1894 [2022-01-10 12:21:44,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:21:44,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:21:44,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:21:44,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:21:44,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:44" (1/1) ... [2022-01-10 12:21:44,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:44" (1/1) ... [2022-01-10 12:21:44,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:44" (1/1) ... [2022-01-10 12:21:44,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:44" (1/1) ... [2022-01-10 12:21:44,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:44" (1/1) ... [2022-01-10 12:21:44,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:44" (1/1) ... [2022-01-10 12:21:44,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:44" (1/1) ... [2022-01-10 12:21:44,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:21:44,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:21:44,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:21:44,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:21:45,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:44" (1/1) ... [2022-01-10 12:21:45,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:21:45,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:21:45,052 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 12:21:45,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 12:21:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:21:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:21:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:21:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:21:45,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:21:45,315 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:21:45,316 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:21:46,293 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:21:46,303 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:21:46,303 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:21:46,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:21:46 BoogieIcfgContainer [2022-01-10 12:21:46,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:21:46,306 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:21:46,306 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:21:46,307 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:21:46,310 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:21:46" (1/1) ... [2022-01-10 12:21:46,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:21:46 BasicIcfg [2022-01-10 12:21:46,653 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:21:46,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:21:46,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:21:46,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:21:46,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:21:44" (1/4) ... [2022-01-10 12:21:46,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d6c860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:21:46, skipping insertion in model container [2022-01-10 12:21:46,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:44" (2/4) ... [2022-01-10 12:21:46,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d6c860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:21:46, skipping insertion in model container [2022-01-10 12:21:46,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:21:46" (3/4) ... [2022-01-10 12:21:46,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d6c860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:21:46, skipping insertion in model container [2022-01-10 12:21:46,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:21:46" (4/4) ... [2022-01-10 12:21:46,665 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec9_product15.cil.cTransformedIcfg [2022-01-10 12:21:46,672 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:21:46,673 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 12:21:46,722 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:21:46,731 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 12:21:46,731 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 12:21:46,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 452 states, 449 states have (on average 1.6948775055679288) internal successors, (761), 451 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:46,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 12:21:46,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:46,773 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] [2022-01-10 12:21:46,774 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:46,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:46,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1136713629, now seen corresponding path program 1 times [2022-01-10 12:21:46,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:46,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654079411] [2022-01-10 12:21:46,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:46,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:47,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:47,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654079411] [2022-01-10 12:21:47,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654079411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:47,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:47,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:21:47,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230555547] [2022-01-10 12:21:47,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:47,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:21:47,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:47,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:21:47,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:21:47,176 INFO L87 Difference]: Start difference. First operand has 452 states, 449 states have (on average 1.6948775055679288) internal successors, (761), 451 states have internal predecessors, (761), 0 states have call successors, (0), 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 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:47,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:47,237 INFO L93 Difference]: Finished difference Result 643 states and 1062 transitions. [2022-01-10 12:21:47,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:21:47,239 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-01-10 12:21:47,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:47,250 INFO L225 Difference]: With dead ends: 643 [2022-01-10 12:21:47,250 INFO L226 Difference]: Without dead ends: 393 [2022-01-10 12:21:47,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:21:47,257 INFO L933 BasicCegarLoop]: 755 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, 755 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:47,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:21:47,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-01-10 12:21:47,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2022-01-10 12:21:47,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 391 states have (on average 1.7058823529411764) internal successors, (667), 392 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:47,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 667 transitions. [2022-01-10 12:21:47,318 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 667 transitions. Word has length 48 [2022-01-10 12:21:47,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:47,319 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 667 transitions. [2022-01-10 12:21:47,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:47,319 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 667 transitions. [2022-01-10 12:21:47,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 12:21:47,321 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:47,321 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] [2022-01-10 12:21:47,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:21:47,321 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:47,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:47,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1180130991, now seen corresponding path program 1 times [2022-01-10 12:21:47,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:47,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867742769] [2022-01-10 12:21:47,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:47,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:47,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:47,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867742769] [2022-01-10 12:21:47,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867742769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:47,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:47,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:21:47,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389128075] [2022-01-10 12:21:47,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:47,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:21:47,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:47,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:21:47,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:21:47,509 INFO L87 Difference]: Start difference. First operand 393 states and 667 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:47,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:47,538 INFO L93 Difference]: Finished difference Result 484 states and 808 transitions. [2022-01-10 12:21:47,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:21:47,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-01-10 12:21:47,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:47,543 INFO L225 Difference]: With dead ends: 484 [2022-01-10 12:21:47,543 INFO L226 Difference]: Without dead ends: 387 [2022-01-10 12:21:47,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:21:47,547 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 483 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:47,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 786 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:21:47,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-01-10 12:21:47,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2022-01-10 12:21:47,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 1.7046632124352332) internal successors, (658), 386 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:47,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 658 transitions. [2022-01-10 12:21:47,574 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 658 transitions. Word has length 49 [2022-01-10 12:21:47,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:47,575 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 658 transitions. [2022-01-10 12:21:47,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:47,576 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 658 transitions. [2022-01-10 12:21:47,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 12:21:47,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:47,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:21:47,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:21:47,579 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:47,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:47,580 INFO L85 PathProgramCache]: Analyzing trace with hash 480313266, now seen corresponding path program 1 times [2022-01-10 12:21:47,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:47,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277395848] [2022-01-10 12:21:47,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:47,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:47,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:47,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:47,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277395848] [2022-01-10 12:21:47,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277395848] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:47,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:47,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:21:47,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473434945] [2022-01-10 12:21:47,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:47,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:21:47,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:47,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:21:47,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:21:47,785 INFO L87 Difference]: Start difference. First operand 387 states and 658 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:47,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:47,863 INFO L93 Difference]: Finished difference Result 755 states and 1288 transitions. [2022-01-10 12:21:47,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:21:47,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-01-10 12:21:47,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:47,893 INFO L225 Difference]: With dead ends: 755 [2022-01-10 12:21:47,893 INFO L226 Difference]: Without dead ends: 387 [2022-01-10 12:21:47,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:21:47,895 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 633 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:47,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 652 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:21:47,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-01-10 12:21:47,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2022-01-10 12:21:47,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 1.6994818652849741) internal successors, (656), 386 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:47,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 656 transitions. [2022-01-10 12:21:47,916 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 656 transitions. Word has length 86 [2022-01-10 12:21:47,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:47,917 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 656 transitions. [2022-01-10 12:21:47,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:47,917 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 656 transitions. [2022-01-10 12:21:47,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 12:21:47,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:47,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:21:47,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:21:47,921 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:47,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:47,922 INFO L85 PathProgramCache]: Analyzing trace with hash -522346446, now seen corresponding path program 1 times [2022-01-10 12:21:47,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:47,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717847981] [2022-01-10 12:21:47,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:47,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:48,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:48,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:48,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717847981] [2022-01-10 12:21:48,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717847981] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:48,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:48,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:21:48,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158370359] [2022-01-10 12:21:48,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:48,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:21:48,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:48,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:21:48,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:21:48,087 INFO L87 Difference]: Start difference. First operand 387 states and 656 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:48,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:48,300 INFO L93 Difference]: Finished difference Result 1803 states and 3076 transitions. [2022-01-10 12:21:48,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:21:48,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 12:21:48,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:48,308 INFO L225 Difference]: With dead ends: 1803 [2022-01-10 12:21:48,308 INFO L226 Difference]: Without dead ends: 1440 [2022-01-10 12:21:48,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:21:48,312 INFO L933 BasicCegarLoop]: 1235 mSDtfsCounter, 3063 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3063 SdHoareTripleChecker+Valid, 3075 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:48,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3063 Valid, 3075 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:21:48,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2022-01-10 12:21:48,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 387. [2022-01-10 12:21:48,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 1.6968911917098446) internal successors, (655), 386 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:48,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 655 transitions. [2022-01-10 12:21:48,345 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 655 transitions. Word has length 88 [2022-01-10 12:21:48,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:48,345 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 655 transitions. [2022-01-10 12:21:48,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:48,346 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 655 transitions. [2022-01-10 12:21:48,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 12:21:48,347 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:48,347 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] [2022-01-10 12:21:48,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:21:48,348 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:48,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:48,351 INFO L85 PathProgramCache]: Analyzing trace with hash 857318714, now seen corresponding path program 1 times [2022-01-10 12:21:48,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:48,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915629758] [2022-01-10 12:21:48,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:48,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:48,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:48,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915629758] [2022-01-10 12:21:48,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915629758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:48,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:48,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:21:48,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439357063] [2022-01-10 12:21:48,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:48,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:21:48,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:48,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:21:48,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:21:48,501 INFO L87 Difference]: Start difference. First operand 387 states and 655 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:48,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:48,547 INFO L93 Difference]: Finished difference Result 759 states and 1288 transitions. [2022-01-10 12:21:48,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:21:48,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-01-10 12:21:48,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:48,550 INFO L225 Difference]: With dead ends: 759 [2022-01-10 12:21:48,550 INFO L226 Difference]: Without dead ends: 401 [2022-01-10 12:21:48,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:21:48,552 INFO L933 BasicCegarLoop]: 669 mSDtfsCounter, 634 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:48,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [634 Valid, 691 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:21:48,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-01-10 12:21:48,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 387. [2022-01-10 12:21:48,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 1.694300518134715) internal successors, (654), 386 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:48,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 654 transitions. [2022-01-10 12:21:48,613 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 654 transitions. Word has length 89 [2022-01-10 12:21:48,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:48,613 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 654 transitions. [2022-01-10 12:21:48,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:48,614 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 654 transitions. [2022-01-10 12:21:48,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 12:21:48,615 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:48,615 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] [2022-01-10 12:21:48,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:21:48,615 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:48,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:48,620 INFO L85 PathProgramCache]: Analyzing trace with hash 357229873, now seen corresponding path program 1 times [2022-01-10 12:21:48,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:48,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201823929] [2022-01-10 12:21:48,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:48,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:48,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:48,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:48,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201823929] [2022-01-10 12:21:48,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201823929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:48,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:48,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:21:48,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046582370] [2022-01-10 12:21:48,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:48,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:21:48,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:48,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:21:48,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:21:48,757 INFO L87 Difference]: Start difference. First operand 387 states and 654 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:48,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:48,914 INFO L93 Difference]: Finished difference Result 1095 states and 1862 transitions. [2022-01-10 12:21:48,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:21:48,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-01-10 12:21:48,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:48,918 INFO L225 Difference]: With dead ends: 1095 [2022-01-10 12:21:48,919 INFO L226 Difference]: Without dead ends: 742 [2022-01-10 12:21:48,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:21:48,921 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 2986 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2986 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:48,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2986 Valid, 1340 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:21:48,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-01-10 12:21:48,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 387. [2022-01-10 12:21:48,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 1.689119170984456) internal successors, (652), 386 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:48,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 652 transitions. [2022-01-10 12:21:48,954 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 652 transitions. Word has length 90 [2022-01-10 12:21:48,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:48,955 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 652 transitions. [2022-01-10 12:21:48,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:48,956 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 652 transitions. [2022-01-10 12:21:48,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 12:21:48,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:48,957 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] [2022-01-10 12:21:48,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:21:48,957 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:48,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:48,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1001356556, now seen corresponding path program 1 times [2022-01-10 12:21:48,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:48,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110126279] [2022-01-10 12:21:48,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:48,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:49,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:49,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:49,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110126279] [2022-01-10 12:21:49,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110126279] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:49,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:49,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:21:49,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20283498] [2022-01-10 12:21:49,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:49,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:21:49,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:49,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:21:49,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:21:49,142 INFO L87 Difference]: Start difference. First operand 387 states and 652 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:49,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:49,729 INFO L93 Difference]: Finished difference Result 1392 states and 2230 transitions. [2022-01-10 12:21:49,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:21:49,730 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-01-10 12:21:49,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:49,736 INFO L225 Difference]: With dead ends: 1392 [2022-01-10 12:21:49,736 INFO L226 Difference]: Without dead ends: 1284 [2022-01-10 12:21:49,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:21:49,740 INFO L933 BasicCegarLoop]: 791 mSDtfsCounter, 4398 mSDsluCounter, 4675 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4398 SdHoareTripleChecker+Valid, 5466 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:49,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4398 Valid, 5466 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:21:49,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2022-01-10 12:21:49,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 708. [2022-01-10 12:21:49,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 707 states have (on average 1.7057991513437059) internal successors, (1206), 707 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:49,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1206 transitions. [2022-01-10 12:21:49,816 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1206 transitions. Word has length 92 [2022-01-10 12:21:49,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:49,816 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 1206 transitions. [2022-01-10 12:21:49,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:49,817 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1206 transitions. [2022-01-10 12:21:49,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 12:21:49,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:49,818 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] [2022-01-10 12:21:49,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:21:49,819 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:49,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:49,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1376022243, now seen corresponding path program 1 times [2022-01-10 12:21:49,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:49,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756960448] [2022-01-10 12:21:49,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:49,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:49,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:49,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:49,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756960448] [2022-01-10 12:21:49,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756960448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:49,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:49,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:21:49,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754671325] [2022-01-10 12:21:49,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:49,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:21:49,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:49,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:21:49,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:21:49,913 INFO L87 Difference]: Start difference. First operand 708 states and 1206 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:49,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:49,987 INFO L93 Difference]: Finished difference Result 892 states and 1485 transitions. [2022-01-10 12:21:49,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:21:49,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-01-10 12:21:49,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:49,991 INFO L225 Difference]: With dead ends: 892 [2022-01-10 12:21:49,991 INFO L226 Difference]: Without dead ends: 770 [2022-01-10 12:21:49,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:21:49,992 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 460 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:49,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 1619 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:21:49,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-01-10 12:21:50,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 708. [2022-01-10 12:21:50,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 707 states have (on average 1.7043847241867043) internal successors, (1205), 707 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:50,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1205 transitions. [2022-01-10 12:21:50,058 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1205 transitions. Word has length 93 [2022-01-10 12:21:50,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:50,058 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 1205 transitions. [2022-01-10 12:21:50,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:50,058 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1205 transitions. [2022-01-10 12:21:50,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 12:21:50,060 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:50,060 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] [2022-01-10 12:21:50,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:21:50,060 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:50,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:50,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1355684868, now seen corresponding path program 1 times [2022-01-10 12:21:50,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:50,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340658402] [2022-01-10 12:21:50,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:50,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:50,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:50,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:50,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340658402] [2022-01-10 12:21:50,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340658402] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:50,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:50,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:21:50,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851437826] [2022-01-10 12:21:50,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:50,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:21:50,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:50,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:21:50,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:21:50,192 INFO L87 Difference]: Start difference. First operand 708 states and 1205 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:50,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:50,449 INFO L93 Difference]: Finished difference Result 1619 states and 2583 transitions. [2022-01-10 12:21:50,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:21:50,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-01-10 12:21:50,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:50,455 INFO L225 Difference]: With dead ends: 1619 [2022-01-10 12:21:50,455 INFO L226 Difference]: Without dead ends: 1117 [2022-01-10 12:21:50,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:21:50,459 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 2041 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2041 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:50,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2041 Valid, 1895 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:21:50,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2022-01-10 12:21:50,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 738. [2022-01-10 12:21:50,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 737 states have (on average 1.6919945725915875) internal successors, (1247), 737 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:50,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1247 transitions. [2022-01-10 12:21:50,546 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1247 transitions. Word has length 93 [2022-01-10 12:21:50,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:50,548 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 1247 transitions. [2022-01-10 12:21:50,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:50,548 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1247 transitions. [2022-01-10 12:21:50,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 12:21:50,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:50,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:21:50,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:21:50,552 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:50,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:50,553 INFO L85 PathProgramCache]: Analyzing trace with hash -525484033, now seen corresponding path program 1 times [2022-01-10 12:21:50,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:50,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540773161] [2022-01-10 12:21:50,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:50,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:50,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:50,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:50,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540773161] [2022-01-10 12:21:50,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540773161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:50,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:50,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:21:50,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417501443] [2022-01-10 12:21:50,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:50,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:21:50,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:50,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:21:50,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:21:50,701 INFO L87 Difference]: Start difference. First operand 738 states and 1247 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:50,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:50,908 INFO L93 Difference]: Finished difference Result 996 states and 1635 transitions. [2022-01-10 12:21:50,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 12:21:50,908 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-01-10 12:21:50,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:50,912 INFO L225 Difference]: With dead ends: 996 [2022-01-10 12:21:50,912 INFO L226 Difference]: Without dead ends: 823 [2022-01-10 12:21:50,913 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 [2022-01-10 12:21:50,913 INFO L933 BasicCegarLoop]: 637 mSDtfsCounter, 1372 mSDsluCounter, 3051 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 3688 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:50,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1372 Valid, 3688 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:21:50,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2022-01-10 12:21:50,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 704. [2022-01-10 12:21:50,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 703 states have (on average 1.694167852062589) internal successors, (1191), 703 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:50,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1191 transitions. [2022-01-10 12:21:50,976 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1191 transitions. Word has length 94 [2022-01-10 12:21:50,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:50,977 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 1191 transitions. [2022-01-10 12:21:50,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:50,977 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1191 transitions. [2022-01-10 12:21:50,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 12:21:50,979 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:50,979 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] [2022-01-10 12:21:50,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:21:50,979 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:50,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:50,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1122024029, now seen corresponding path program 1 times [2022-01-10 12:21:50,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:50,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436255431] [2022-01-10 12:21:50,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:50,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:51,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:51,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436255431] [2022-01-10 12:21:51,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436255431] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:51,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:51,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:21:51,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447466244] [2022-01-10 12:21:51,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:51,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:21:51,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:51,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:21:51,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:21:51,092 INFO L87 Difference]: Start difference. First operand 704 states and 1191 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:51,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:51,300 INFO L93 Difference]: Finished difference Result 1620 states and 2698 transitions. [2022-01-10 12:21:51,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:21:51,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-01-10 12:21:51,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:51,307 INFO L225 Difference]: With dead ends: 1620 [2022-01-10 12:21:51,307 INFO L226 Difference]: Without dead ends: 1435 [2022-01-10 12:21:51,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:21:51,308 INFO L933 BasicCegarLoop]: 710 mSDtfsCounter, 707 mSDsluCounter, 1957 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 2667 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:51,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [707 Valid, 2667 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:21:51,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2022-01-10 12:21:51,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1337. [2022-01-10 12:21:51,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1336 states have (on average 1.6923652694610778) internal successors, (2261), 1336 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:51,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 2261 transitions. [2022-01-10 12:21:51,421 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 2261 transitions. Word has length 97 [2022-01-10 12:21:51,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:51,421 INFO L470 AbstractCegarLoop]: Abstraction has 1337 states and 2261 transitions. [2022-01-10 12:21:51,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:51,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 2261 transitions. [2022-01-10 12:21:51,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:21:51,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:51,424 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] [2022-01-10 12:21:51,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:21:51,425 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:51,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:51,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1497361782, now seen corresponding path program 1 times [2022-01-10 12:21:51,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:51,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843612599] [2022-01-10 12:21:51,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:51,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:51,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:51,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:51,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843612599] [2022-01-10 12:21:51,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843612599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:51,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:51,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:21:51,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910510334] [2022-01-10 12:21:51,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:51,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:21:51,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:51,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:21:51,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:21:51,566 INFO L87 Difference]: Start difference. First operand 1337 states and 2261 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:52,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:52,444 INFO L93 Difference]: Finished difference Result 4368 states and 6925 transitions. [2022-01-10 12:21:52,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:21:52,445 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:21:52,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:52,460 INFO L225 Difference]: With dead ends: 4368 [2022-01-10 12:21:52,460 INFO L226 Difference]: Without dead ends: 4030 [2022-01-10 12:21:52,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:21:52,464 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 4873 mSDsluCounter, 3739 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4873 SdHoareTripleChecker+Valid, 4346 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:52,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4873 Valid, 4346 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:21:52,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4030 states. [2022-01-10 12:21:52,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4030 to 2608. [2022-01-10 12:21:52,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2608 states, 2607 states have (on average 1.696969696969697) internal successors, (4424), 2607 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:52,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2608 states to 2608 states and 4424 transitions. [2022-01-10 12:21:52,757 INFO L78 Accepts]: Start accepts. Automaton has 2608 states and 4424 transitions. Word has length 98 [2022-01-10 12:21:52,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:52,757 INFO L470 AbstractCegarLoop]: Abstraction has 2608 states and 4424 transitions. [2022-01-10 12:21:52,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:52,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2608 states and 4424 transitions. [2022-01-10 12:21:52,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:21:52,763 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:52,763 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] [2022-01-10 12:21:52,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:21:52,763 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:52,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:52,764 INFO L85 PathProgramCache]: Analyzing trace with hash 246816621, now seen corresponding path program 1 times [2022-01-10 12:21:52,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:52,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26226409] [2022-01-10 12:21:52,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:52,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:52,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:52,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26226409] [2022-01-10 12:21:52,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26226409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:52,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:52,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:21:52,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180340402] [2022-01-10 12:21:52,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:52,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:21:52,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:52,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:21:52,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:21:52,907 INFO L87 Difference]: Start difference. First operand 2608 states and 4424 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:53,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:53,217 INFO L93 Difference]: Finished difference Result 3262 states and 5391 transitions. [2022-01-10 12:21:53,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:21:53,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:21:53,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:53,227 INFO L225 Difference]: With dead ends: 3262 [2022-01-10 12:21:53,227 INFO L226 Difference]: Without dead ends: 2579 [2022-01-10 12:21:53,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:21:53,230 INFO L933 BasicCegarLoop]: 630 mSDtfsCounter, 1091 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 2089 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:53,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1091 Valid, 2089 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:21:53,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2022-01-10 12:21:53,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2554. [2022-01-10 12:21:53,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2554 states, 2553 states have (on average 1.6972189580885233) internal successors, (4333), 2553 states have internal predecessors, (4333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:53,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2554 states to 2554 states and 4333 transitions. [2022-01-10 12:21:53,475 INFO L78 Accepts]: Start accepts. Automaton has 2554 states and 4333 transitions. Word has length 98 [2022-01-10 12:21:53,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:53,476 INFO L470 AbstractCegarLoop]: Abstraction has 2554 states and 4333 transitions. [2022-01-10 12:21:53,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:53,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2554 states and 4333 transitions. [2022-01-10 12:21:53,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:21:53,484 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:53,484 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] [2022-01-10 12:21:53,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:21:53,485 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:53,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:53,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1544124784, now seen corresponding path program 1 times [2022-01-10 12:21:53,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:53,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120988016] [2022-01-10 12:21:53,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:53,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:53,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:53,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:53,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120988016] [2022-01-10 12:21:53,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120988016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:53,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:53,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:21:53,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768662141] [2022-01-10 12:21:53,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:53,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:21:53,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:53,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:21:53,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:21:53,653 INFO L87 Difference]: Start difference. First operand 2554 states and 4333 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:54,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:54,324 INFO L93 Difference]: Finished difference Result 3615 states and 5878 transitions. [2022-01-10 12:21:54,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:21:54,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 12:21:54,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:54,341 INFO L225 Difference]: With dead ends: 3615 [2022-01-10 12:21:54,342 INFO L226 Difference]: Without dead ends: 3426 [2022-01-10 12:21:54,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:21:54,343 INFO L933 BasicCegarLoop]: 1168 mSDtfsCounter, 1061 mSDsluCounter, 2775 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 3943 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:54,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1061 Valid, 3943 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:21:54,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3426 states. [2022-01-10 12:21:54,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3426 to 2725. [2022-01-10 12:21:54,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2725 states, 2724 states have (on average 1.6806167400881058) internal successors, (4578), 2724 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:54,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 4578 transitions. [2022-01-10 12:21:54,650 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 4578 transitions. Word has length 98 [2022-01-10 12:21:54,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:54,650 INFO L470 AbstractCegarLoop]: Abstraction has 2725 states and 4578 transitions. [2022-01-10 12:21:54,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:54,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 4578 transitions. [2022-01-10 12:21:54,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 12:21:54,656 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:54,657 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] [2022-01-10 12:21:54,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:21:54,657 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:54,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:54,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1230610878, now seen corresponding path program 1 times [2022-01-10 12:21:54,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:54,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357174330] [2022-01-10 12:21:54,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:54,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:54,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:54,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357174330] [2022-01-10 12:21:54,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357174330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:54,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:54,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:21:54,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902411846] [2022-01-10 12:21:54,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:54,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:21:54,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:54,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:21:54,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:21:54,767 INFO L87 Difference]: Start difference. First operand 2725 states and 4578 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:55,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:55,435 INFO L93 Difference]: Finished difference Result 5271 states and 8261 transitions. [2022-01-10 12:21:55,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:21:55,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 12:21:55,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:55,451 INFO L225 Difference]: With dead ends: 5271 [2022-01-10 12:21:55,451 INFO L226 Difference]: Without dead ends: 4532 [2022-01-10 12:21:55,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:21:55,453 INFO L933 BasicCegarLoop]: 841 mSDtfsCounter, 530 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:55,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 2881 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:21:55,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4532 states. [2022-01-10 12:21:55,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4532 to 2811. [2022-01-10 12:21:55,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2810 states have (on average 1.6658362989323843) internal successors, (4681), 2810 states have internal predecessors, (4681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:55,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4681 transitions. [2022-01-10 12:21:55,748 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4681 transitions. Word has length 99 [2022-01-10 12:21:55,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:55,749 INFO L470 AbstractCegarLoop]: Abstraction has 2811 states and 4681 transitions. [2022-01-10 12:21:55,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:55,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4681 transitions. [2022-01-10 12:21:55,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 12:21:55,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:55,755 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] [2022-01-10 12:21:55,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:21:55,755 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:55,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:55,756 INFO L85 PathProgramCache]: Analyzing trace with hash -950260989, now seen corresponding path program 1 times [2022-01-10 12:21:55,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:55,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631087846] [2022-01-10 12:21:55,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:55,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:55,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:55,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:55,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631087846] [2022-01-10 12:21:55,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631087846] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:55,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:55,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:21:55,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414356209] [2022-01-10 12:21:55,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:55,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:21:55,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:55,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:21:55,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:21:55,881 INFO L87 Difference]: Start difference. First operand 2811 states and 4681 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:56,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:56,572 INFO L93 Difference]: Finished difference Result 4463 states and 7066 transitions. [2022-01-10 12:21:56,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:21:56,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 12:21:56,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:56,581 INFO L225 Difference]: With dead ends: 4463 [2022-01-10 12:21:56,581 INFO L226 Difference]: Without dead ends: 3919 [2022-01-10 12:21:56,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:21:56,584 INFO L933 BasicCegarLoop]: 1207 mSDtfsCounter, 926 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 3592 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:56,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [926 Valid, 3592 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:21:56,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2022-01-10 12:21:56,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 2822. [2022-01-10 12:21:56,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2822 states, 2821 states have (on average 1.6618220489188231) internal successors, (4688), 2821 states have internal predecessors, (4688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:56,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 4688 transitions. [2022-01-10 12:21:56,872 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 4688 transitions. Word has length 99 [2022-01-10 12:21:56,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:56,872 INFO L470 AbstractCegarLoop]: Abstraction has 2822 states and 4688 transitions. [2022-01-10 12:21:56,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:56,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 4688 transitions. [2022-01-10 12:21:56,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 12:21:56,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:56,878 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] [2022-01-10 12:21:56,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:21:56,878 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:56,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:56,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1886609865, now seen corresponding path program 1 times [2022-01-10 12:21:56,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:56,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687089257] [2022-01-10 12:21:56,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:56,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:56,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:56,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687089257] [2022-01-10 12:21:56,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687089257] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:56,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:56,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:21:56,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638046910] [2022-01-10 12:21:56,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:56,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:21:56,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:56,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:21:56,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:21:56,998 INFO L87 Difference]: Start difference. First operand 2822 states and 4688 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:57,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:57,414 INFO L93 Difference]: Finished difference Result 3871 states and 6199 transitions. [2022-01-10 12:21:57,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:21:57,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-10 12:21:57,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:57,423 INFO L225 Difference]: With dead ends: 3871 [2022-01-10 12:21:57,423 INFO L226 Difference]: Without dead ends: 2991 [2022-01-10 12:21:57,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:21:57,426 INFO L933 BasicCegarLoop]: 790 mSDtfsCounter, 248 mSDsluCounter, 1922 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:57,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 2712 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:21:57,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2022-01-10 12:21:57,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 2602. [2022-01-10 12:21:57,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 2601 states have (on average 1.685121107266436) internal successors, (4383), 2601 states have internal predecessors, (4383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:57,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 4383 transitions. [2022-01-10 12:21:57,714 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 4383 transitions. Word has length 100 [2022-01-10 12:21:57,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:57,714 INFO L470 AbstractCegarLoop]: Abstraction has 2602 states and 4383 transitions. [2022-01-10 12:21:57,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:57,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 4383 transitions. [2022-01-10 12:21:57,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 12:21:57,720 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:57,720 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:21:57,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:21:57,720 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:57,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:57,721 INFO L85 PathProgramCache]: Analyzing trace with hash 253462729, now seen corresponding path program 1 times [2022-01-10 12:21:57,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:57,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711770805] [2022-01-10 12:21:57,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:57,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:57,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:57,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:57,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711770805] [2022-01-10 12:21:57,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711770805] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:57,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:57,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:21:57,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332833004] [2022-01-10 12:21:57,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:57,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:21:57,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:57,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:21:57,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:21:57,788 INFO L87 Difference]: Start difference. First operand 2602 states and 4383 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:58,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:58,254 INFO L93 Difference]: Finished difference Result 7316 states and 12283 transitions. [2022-01-10 12:21:58,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:21:58,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-01-10 12:21:58,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:58,264 INFO L225 Difference]: With dead ends: 7316 [2022-01-10 12:21:58,264 INFO L226 Difference]: Without dead ends: 4751 [2022-01-10 12:21:58,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:21:58,269 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 575 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:58,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 1158 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:21:58,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4751 states. [2022-01-10 12:21:58,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4751 to 3962. [2022-01-10 12:21:58,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3962 states, 3961 states have (on average 1.7177480434233778) internal successors, (6804), 3961 states have internal predecessors, (6804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:58,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3962 states to 3962 states and 6804 transitions. [2022-01-10 12:21:58,660 INFO L78 Accepts]: Start accepts. Automaton has 3962 states and 6804 transitions. Word has length 115 [2022-01-10 12:21:58,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:58,660 INFO L470 AbstractCegarLoop]: Abstraction has 3962 states and 6804 transitions. [2022-01-10 12:21:58,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:58,661 INFO L276 IsEmpty]: Start isEmpty. Operand 3962 states and 6804 transitions. [2022-01-10 12:21:58,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 12:21:58,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:58,669 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:21:58,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:21:58,669 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:58,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:58,670 INFO L85 PathProgramCache]: Analyzing trace with hash 895518150, now seen corresponding path program 1 times [2022-01-10 12:21:58,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:58,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002251038] [2022-01-10 12:21:58,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:58,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:58,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:58,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002251038] [2022-01-10 12:21:58,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002251038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:58,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:58,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:21:58,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555908649] [2022-01-10 12:21:58,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:58,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:21:58,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:58,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:21:58,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:21:58,741 INFO L87 Difference]: Start difference. First operand 3962 states and 6804 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:59,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:59,270 INFO L93 Difference]: Finished difference Result 11716 states and 20154 transitions. [2022-01-10 12:21:59,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:21:59,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-01-10 12:21:59,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:59,289 INFO L225 Difference]: With dead ends: 11716 [2022-01-10 12:21:59,289 INFO L226 Difference]: Without dead ends: 7791 [2022-01-10 12:21:59,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:21:59,296 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 573 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:59,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 1244 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:21:59,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7791 states. [2022-01-10 12:21:59,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7791 to 7002. [2022-01-10 12:21:59,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7002 states, 7001 states have (on average 1.7491786887587488) internal successors, (12246), 7001 states have internal predecessors, (12246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:59,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7002 states to 7002 states and 12246 transitions. [2022-01-10 12:21:59,717 INFO L78 Accepts]: Start accepts. Automaton has 7002 states and 12246 transitions. Word has length 116 [2022-01-10 12:21:59,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:59,717 INFO L470 AbstractCegarLoop]: Abstraction has 7002 states and 12246 transitions. [2022-01-10 12:21:59,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:59,718 INFO L276 IsEmpty]: Start isEmpty. Operand 7002 states and 12246 transitions. [2022-01-10 12:21:59,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 12:21:59,734 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:59,734 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:21:59,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 12:21:59,735 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:59,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:59,735 INFO L85 PathProgramCache]: Analyzing trace with hash -124931678, now seen corresponding path program 1 times [2022-01-10 12:21:59,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:59,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427581512] [2022-01-10 12:21:59,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:59,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:59,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:59,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427581512] [2022-01-10 12:21:59,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427581512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:59,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:59,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:21:59,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882534105] [2022-01-10 12:21:59,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:59,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:21:59,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:59,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:21:59,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:21:59,798 INFO L87 Difference]: Start difference. First operand 7002 states and 12246 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 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) [2022-01-10 12:22:00,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:00,481 INFO L93 Difference]: Finished difference Result 20740 states and 36320 transitions. [2022-01-10 12:22:00,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:22:00,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 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 [2022-01-10 12:22:00,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:00,515 INFO L225 Difference]: With dead ends: 20740 [2022-01-10 12:22:00,515 INFO L226 Difference]: Without dead ends: 13775 [2022-01-10 12:22:00,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:22:00,528 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 571 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:22:00,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [571 Valid, 1244 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:22:00,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13775 states. [2022-01-10 12:22:01,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13775 to 12986. [2022-01-10 12:22:01,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12986 states, 12985 states have (on average 1.7677319984597613) internal successors, (22954), 12985 states have internal predecessors, (22954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:01,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12986 states to 12986 states and 22954 transitions. [2022-01-10 12:22:01,306 INFO L78 Accepts]: Start accepts. Automaton has 12986 states and 22954 transitions. Word has length 117 [2022-01-10 12:22:01,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:01,307 INFO L470 AbstractCegarLoop]: Abstraction has 12986 states and 22954 transitions. [2022-01-10 12:22:01,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 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) [2022-01-10 12:22:01,307 INFO L276 IsEmpty]: Start isEmpty. Operand 12986 states and 22954 transitions. [2022-01-10 12:22:01,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 12:22:01,345 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:01,345 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:22:01,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 12:22:01,345 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:01,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:01,346 INFO L85 PathProgramCache]: Analyzing trace with hash -936627453, now seen corresponding path program 1 times [2022-01-10 12:22:01,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:01,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744763969] [2022-01-10 12:22:01,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:01,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:01,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 12:22:01,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:01,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744763969] [2022-01-10 12:22:01,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744763969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:01,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:01,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:22:01,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282099458] [2022-01-10 12:22:01,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:01,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:22:01,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:01,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:22:01,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:22:01,558 INFO L87 Difference]: Start difference. First operand 12986 states and 22954 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 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) [2022-01-10 12:22:04,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:04,089 INFO L93 Difference]: Finished difference Result 51276 states and 90729 transitions. [2022-01-10 12:22:04,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:22:04,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 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 118 [2022-01-10 12:22:04,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:04,232 INFO L225 Difference]: With dead ends: 51276 [2022-01-10 12:22:04,233 INFO L226 Difference]: Without dead ends: 50952 [2022-01-10 12:22:04,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:22:04,250 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 2811 mSDsluCounter, 3054 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2811 SdHoareTripleChecker+Valid, 3762 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:22:04,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2811 Valid, 3762 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:22:04,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50952 states. [2022-01-10 12:22:06,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50952 to 25482. [2022-01-10 12:22:06,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25482 states, 25481 states have (on average 1.7727326243083081) internal successors, (45171), 25481 states have internal predecessors, (45171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:06,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25482 states to 25482 states and 45171 transitions. [2022-01-10 12:22:06,133 INFO L78 Accepts]: Start accepts. Automaton has 25482 states and 45171 transitions. Word has length 118 [2022-01-10 12:22:06,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:06,134 INFO L470 AbstractCegarLoop]: Abstraction has 25482 states and 45171 transitions. [2022-01-10 12:22:06,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 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) [2022-01-10 12:22:06,134 INFO L276 IsEmpty]: Start isEmpty. Operand 25482 states and 45171 transitions. [2022-01-10 12:22:06,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 12:22:06,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:06,190 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:22:06,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 12:22:06,192 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:06,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:06,192 INFO L85 PathProgramCache]: Analyzing trace with hash 89438499, now seen corresponding path program 1 times [2022-01-10 12:22:06,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:06,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656409018] [2022-01-10 12:22:06,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:06,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:06,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 12:22:06,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:06,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656409018] [2022-01-10 12:22:06,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656409018] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:06,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:06,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:22:06,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567930364] [2022-01-10 12:22:06,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:06,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:22:06,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:06,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:22:06,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:22:06,347 INFO L87 Difference]: Start difference. First operand 25482 states and 45171 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 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) [2022-01-10 12:22:11,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:11,661 INFO L93 Difference]: Finished difference Result 99338 states and 176695 transitions. [2022-01-10 12:22:11,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:22:11,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 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 119 [2022-01-10 12:22:11,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:11,884 INFO L225 Difference]: With dead ends: 99338 [2022-01-10 12:22:11,884 INFO L226 Difference]: Without dead ends: 99014 [2022-01-10 12:22:11,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:22:11,917 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 2682 mSDsluCounter, 2545 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2682 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:22:11,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2682 Valid, 3284 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:22:12,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99014 states. [2022-01-10 12:22:14,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99014 to 50430. [2022-01-10 12:22:15,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50430 states, 50429 states have (on average 1.7759820738067382) internal successors, (89561), 50429 states have internal predecessors, (89561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:15,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50430 states to 50430 states and 89561 transitions. [2022-01-10 12:22:15,131 INFO L78 Accepts]: Start accepts. Automaton has 50430 states and 89561 transitions. Word has length 119 [2022-01-10 12:22:15,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:15,131 INFO L470 AbstractCegarLoop]: Abstraction has 50430 states and 89561 transitions. [2022-01-10 12:22:15,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 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) [2022-01-10 12:22:15,131 INFO L276 IsEmpty]: Start isEmpty. Operand 50430 states and 89561 transitions. [2022-01-10 12:22:15,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 12:22:15,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:15,227 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:22:15,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 12:22:15,227 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:15,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:15,228 INFO L85 PathProgramCache]: Analyzing trace with hash -744411569, now seen corresponding path program 1 times [2022-01-10 12:22:15,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:15,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108904100] [2022-01-10 12:22:15,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:15,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:15,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 12:22:15,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:15,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108904100] [2022-01-10 12:22:15,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108904100] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:15,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:15,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:22:15,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696791489] [2022-01-10 12:22:15,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:15,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:22:15,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:15,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:22:15,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:22:15,326 INFO L87 Difference]: Start difference. First operand 50430 states and 89561 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 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) [2022-01-10 12:22:20,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:20,741 INFO L93 Difference]: Finished difference Result 148338 states and 263775 transitions. [2022-01-10 12:22:20,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:22:20,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 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 119 [2022-01-10 12:22:20,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:20,929 INFO L225 Difference]: With dead ends: 148338 [2022-01-10 12:22:20,929 INFO L226 Difference]: Without dead ends: 97958 [2022-01-10 12:22:20,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:22:20,994 INFO L933 BasicCegarLoop]: 1160 mSDtfsCounter, 1826 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:22:20,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1826 Valid, 1742 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:22:21,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97958 states. [2022-01-10 12:22:24,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97958 to 50430. [2022-01-10 12:22:24,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50430 states, 50429 states have (on average 1.7759424140871325) internal successors, (89559), 50429 states have internal predecessors, (89559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:24,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50430 states to 50430 states and 89559 transitions. [2022-01-10 12:22:24,551 INFO L78 Accepts]: Start accepts. Automaton has 50430 states and 89559 transitions. Word has length 119 [2022-01-10 12:22:24,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:24,552 INFO L470 AbstractCegarLoop]: Abstraction has 50430 states and 89559 transitions. [2022-01-10 12:22:24,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 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) [2022-01-10 12:22:24,552 INFO L276 IsEmpty]: Start isEmpty. Operand 50430 states and 89559 transitions. [2022-01-10 12:22:24,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 12:22:24,647 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:24,648 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:22:24,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 12:22:24,648 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:24,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:24,648 INFO L85 PathProgramCache]: Analyzing trace with hash -699304567, now seen corresponding path program 1 times [2022-01-10 12:22:24,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:24,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274400115] [2022-01-10 12:22:24,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:24,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:24,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 12:22:24,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:24,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274400115] [2022-01-10 12:22:24,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274400115] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:24,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:24,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:22:24,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774723077] [2022-01-10 12:22:24,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:24,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:22:24,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:24,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:22:24,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:22:24,808 INFO L87 Difference]: Start difference. First operand 50430 states and 89559 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) [2022-01-10 12:22:33,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:33,690 INFO L93 Difference]: Finished difference Result 150526 states and 267201 transitions. [2022-01-10 12:22:33,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:22:33,691 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 120 [2022-01-10 12:22:33,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:34,008 INFO L225 Difference]: With dead ends: 150526 [2022-01-10 12:22:34,008 INFO L226 Difference]: Without dead ends: 150202 [2022-01-10 12:22:34,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:22:34,052 INFO L933 BasicCegarLoop]: 744 mSDtfsCounter, 2618 mSDsluCounter, 2580 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2618 SdHoareTripleChecker+Valid, 3324 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:22:34,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2618 Valid, 3324 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:22:34,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150202 states. [2022-01-10 12:22:40,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150202 to 100294. [2022-01-10 12:22:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100294 states, 100293 states have (on average 1.7778608676577627) internal successors, (178307), 100293 states have internal predecessors, (178307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:41,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100294 states to 100294 states and 178307 transitions. [2022-01-10 12:22:41,124 INFO L78 Accepts]: Start accepts. Automaton has 100294 states and 178307 transitions. Word has length 120 [2022-01-10 12:22:41,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:41,125 INFO L470 AbstractCegarLoop]: Abstraction has 100294 states and 178307 transitions. [2022-01-10 12:22:41,125 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) [2022-01-10 12:22:41,125 INFO L276 IsEmpty]: Start isEmpty. Operand 100294 states and 178307 transitions. [2022-01-10 12:22:41,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 12:22:41,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:41,281 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:22:41,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 12:22:41,281 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:41,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:41,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1026176330, now seen corresponding path program 1 times [2022-01-10 12:22:41,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:41,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034422841] [2022-01-10 12:22:41,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:41,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:41,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 12:22:41,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:41,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034422841] [2022-01-10 12:22:41,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034422841] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:41,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:41,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:22:41,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184172554] [2022-01-10 12:22:41,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:41,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:22:41,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:41,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:22:41,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:22:41,460 INFO L87 Difference]: Start difference. First operand 100294 states and 178307 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 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)