/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:42:08,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:42:08,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:42:08,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 05:42:08,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 05:42:08,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 05:42:08,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 05:42:08,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 05:42:08,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 05:42:08,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 05:42:08,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 05:42:08,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 05:42:08,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:42:08,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:42:08,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:42:08,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:42:08,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:42:08,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:42:08,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:42:08,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:42:08,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:42:08,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:42:08,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:42:08,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:42:08,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 05:42:08,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 05:42:08,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 05:42:08,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 05:42:08,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 05:42:08,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 05:42:08,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 05:42:08,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 05:42:08,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 05:42:08,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 05:42:08,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 05:42:08,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 05:42:08,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 05:42:08,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 05:42:08,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:42:08,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:42:08,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:42:08,920 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 05:42:08,941 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:42:08,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:42:08,941 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:42:08,941 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:42:08,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:42:08,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:42:08,943 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:42:08,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:42:08,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:42:08,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:42:08,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:42:08,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:42:08,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:42:08,944 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:42:08,944 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:42:08,944 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:42:08,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:42:08,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:42:08,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:42:08,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:42:08,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:42:08,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:42:08,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:42:08,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:42:08,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:42:08,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:42:08,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:42:08,945 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:42:08,945 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:42:08,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:42:08,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:42:08,946 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:42:08,946 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:42:08,946 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:42:09,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:42:09,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:42:09,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:42:09,143 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:42:09,145 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:42:09,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product34.cil.c [2022-01-11 05:42:09,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d41acf5d/732a717f68b04064853ba0ac00e09825/FLAGf523446fc [2022-01-11 05:42:09,643 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:42:09,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product34.cil.c [2022-01-11 05:42:09,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d41acf5d/732a717f68b04064853ba0ac00e09825/FLAGf523446fc [2022-01-11 05:42:09,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d41acf5d/732a717f68b04064853ba0ac00e09825 [2022-01-11 05:42:09,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:42:09,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:42:09,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:42:09,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:42:09,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:42:09,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:42:09" (1/1) ... [2022-01-11 05:42:09,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42209d85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:09, skipping insertion in model container [2022-01-11 05:42:09,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:42:09" (1/1) ... [2022-01-11 05:42:09,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:42:10,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:42:10,535 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product34.cil.c[51595,51608] [2022-01-11 05:42:10,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:42:10,597 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-11 05:42:10,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:42:10,683 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product34.cil.c[51595,51608] [2022-01-11 05:42:10,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:42:10,718 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:42:10,767 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product34.cil.c[51595,51608] [2022-01-11 05:42:10,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:42:10,812 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:42:10,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:10 WrapperNode [2022-01-11 05:42:10,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:42:10,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:42:10,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:42:10,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:42:10,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:10" (1/1) ... [2022-01-11 05:42:10,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:10" (1/1) ... [2022-01-11 05:42:11,052 INFO L137 Inliner]: procedures = 136, calls = 238, calls flagged for inlining = 145, calls inlined = 430, statements flattened = 6807 [2022-01-11 05:42:11,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:42:11,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:42:11,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:42:11,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:42:11,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:10" (1/1) ... [2022-01-11 05:42:11,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:10" (1/1) ... [2022-01-11 05:42:11,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:10" (1/1) ... [2022-01-11 05:42:11,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:10" (1/1) ... [2022-01-11 05:42:11,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:10" (1/1) ... [2022-01-11 05:42:11,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:10" (1/1) ... [2022-01-11 05:42:11,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:10" (1/1) ... [2022-01-11 05:42:11,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:42:11,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:42:11,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:42:11,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:42:11,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:10" (1/1) ... [2022-01-11 05:42:11,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:42:11,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:42:11,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 05:42:11,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 05:42:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-11 05:42:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:42:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:42:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:42:11,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:42:11,512 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:42:11,514 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:42:14,170 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:42:14,185 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:42:14,185 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 05:42:14,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:42:14 BoogieIcfgContainer [2022-01-11 05:42:14,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:42:14,189 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:42:14,189 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:42:14,190 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:42:14,193 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:42:14" (1/1) ... [2022-01-11 05:42:14,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:42:14 BasicIcfg [2022-01-11 05:42:14,761 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:42:14,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:42:14,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:42:14,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:42:14,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:42:09" (1/4) ... [2022-01-11 05:42:14,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624d720d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:42:14, skipping insertion in model container [2022-01-11 05:42:14,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:10" (2/4) ... [2022-01-11 05:42:14,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624d720d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:42:14, skipping insertion in model container [2022-01-11 05:42:14,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:42:14" (3/4) ... [2022-01-11 05:42:14,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624d720d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:42:14, skipping insertion in model container [2022-01-11 05:42:14,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:42:14" (4/4) ... [2022-01-11 05:42:14,769 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product34.cil.cTransformedIcfg [2022-01-11 05:42:14,773 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:42:14,773 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-11 05:42:14,832 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:42:14,838 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 05:42:14,838 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-11 05:42:14,876 INFO L276 IsEmpty]: Start isEmpty. Operand has 1422 states, 1415 states have (on average 1.680565371024735) internal successors, (2378), 1421 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:14,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-11 05:42:14,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:14,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:14,902 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 05:42:14,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:14,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1988326288, now seen corresponding path program 1 times [2022-01-11 05:42:14,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:14,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732066559] [2022-01-11 05:42:14,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:14,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:15,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:15,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732066559] [2022-01-11 05:42:15,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732066559] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:15,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:15,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:42:15,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94418869] [2022-01-11 05:42:15,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:15,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 05:42:15,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:15,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 05:42:15,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:42:15,440 INFO L87 Difference]: Start difference. First operand has 1422 states, 1415 states have (on average 1.680565371024735) internal successors, (2378), 1421 states have internal predecessors, (2378), 0 states have call successors, (0), 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 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:15,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:15,540 INFO L93 Difference]: Finished difference Result 2535 states and 4209 transitions. [2022-01-11 05:42:15,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 05:42:15,542 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-11 05:42:15,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:15,565 INFO L225 Difference]: With dead ends: 2535 [2022-01-11 05:42:15,565 INFO L226 Difference]: Without dead ends: 1302 [2022-01-11 05:42:15,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:42:15,579 INFO L933 BasicCegarLoop]: 2364 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, 2364 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:15,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2364 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:42:15,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2022-01-11 05:42:15,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1302. [2022-01-11 05:42:15,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 1296 states have (on average 1.6936728395061729) internal successors, (2195), 1301 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:15,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 2195 transitions. [2022-01-11 05:42:15,701 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 2195 transitions. Word has length 72 [2022-01-11 05:42:15,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:15,701 INFO L470 AbstractCegarLoop]: Abstraction has 1302 states and 2195 transitions. [2022-01-11 05:42:15,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:15,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 2195 transitions. [2022-01-11 05:42:15,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 05:42:15,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:15,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:15,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:42:15,705 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 05:42:15,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:15,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1607086814, now seen corresponding path program 1 times [2022-01-11 05:42:15,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:15,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585209281] [2022-01-11 05:42:15,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:15,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:15,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:15,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:15,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585209281] [2022-01-11 05:42:15,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585209281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:15,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:15,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:42:15,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917912712] [2022-01-11 05:42:15,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:15,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:42:15,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:15,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:42:15,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:42:15,933 INFO L87 Difference]: Start difference. First operand 1302 states and 2195 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:16,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:16,128 INFO L93 Difference]: Finished difference Result 2585 states and 4362 transitions. [2022-01-11 05:42:16,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:42:16,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-11 05:42:16,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:16,135 INFO L225 Difference]: With dead ends: 2585 [2022-01-11 05:42:16,135 INFO L226 Difference]: Without dead ends: 1302 [2022-01-11 05:42:16,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:42:16,138 INFO L933 BasicCegarLoop]: 2174 mSDtfsCounter, 2170 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2170 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:16,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2170 Valid, 2187 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:42:16,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2022-01-11 05:42:16,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1302. [2022-01-11 05:42:16,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 1296 states have (on average 1.6921296296296295) internal successors, (2193), 1301 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:16,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 2193 transitions. [2022-01-11 05:42:16,193 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 2193 transitions. Word has length 73 [2022-01-11 05:42:16,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:16,194 INFO L470 AbstractCegarLoop]: Abstraction has 1302 states and 2193 transitions. [2022-01-11 05:42:16,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:16,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 2193 transitions. [2022-01-11 05:42:16,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-11 05:42:16,198 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:16,198 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:16,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:42:16,198 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 05:42:16,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:16,199 INFO L85 PathProgramCache]: Analyzing trace with hash -440479138, now seen corresponding path program 1 times [2022-01-11 05:42:16,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:16,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442002189] [2022-01-11 05:42:16,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:16,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:16,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:16,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:16,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442002189] [2022-01-11 05:42:16,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442002189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:16,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:16,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:42:16,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614188385] [2022-01-11 05:42:16,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:16,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:42:16,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:16,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:42:16,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:42:16,440 INFO L87 Difference]: Start difference. First operand 1302 states and 2193 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:16,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:16,903 INFO L93 Difference]: Finished difference Result 6378 states and 10761 transitions. [2022-01-11 05:42:16,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:42:16,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-11 05:42:16,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:16,925 INFO L225 Difference]: With dead ends: 6378 [2022-01-11 05:42:16,926 INFO L226 Difference]: Without dead ends: 5100 [2022-01-11 05:42:16,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:42:16,935 INFO L933 BasicCegarLoop]: 4309 mSDtfsCounter, 10748 mSDsluCounter, 6451 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10748 SdHoareTripleChecker+Valid, 10760 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:16,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10748 Valid, 10760 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:42:16,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5100 states. [2022-01-11 05:42:17,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5100 to 1302. [2022-01-11 05:42:17,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 1296 states have (on average 1.691358024691358) internal successors, (2192), 1301 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:17,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 2192 transitions. [2022-01-11 05:42:17,039 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 2192 transitions. Word has length 75 [2022-01-11 05:42:17,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:17,041 INFO L470 AbstractCegarLoop]: Abstraction has 1302 states and 2192 transitions. [2022-01-11 05:42:17,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:17,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 2192 transitions. [2022-01-11 05:42:17,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 05:42:17,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:17,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:17,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 05:42:17,045 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 05:42:17,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:17,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2071363798, now seen corresponding path program 1 times [2022-01-11 05:42:17,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:17,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612463702] [2022-01-11 05:42:17,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:17,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:17,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:17,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:17,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612463702] [2022-01-11 05:42:17,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612463702] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:17,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:17,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:42:17,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555100012] [2022-01-11 05:42:17,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:17,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:42:17,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:17,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:42:17,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:42:17,208 INFO L87 Difference]: Start difference. First operand 1302 states and 2192 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:17,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:17,305 INFO L93 Difference]: Finished difference Result 2589 states and 4362 transitions. [2022-01-11 05:42:17,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:42:17,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-11 05:42:17,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:17,311 INFO L225 Difference]: With dead ends: 2589 [2022-01-11 05:42:17,311 INFO L226 Difference]: Without dead ends: 1316 [2022-01-11 05:42:17,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:42:17,314 INFO L933 BasicCegarLoop]: 2206 mSDtfsCounter, 2171 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2171 SdHoareTripleChecker+Valid, 2228 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:17,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2171 Valid, 2228 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:42:17,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2022-01-11 05:42:17,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1302. [2022-01-11 05:42:17,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 1296 states have (on average 1.6905864197530864) internal successors, (2191), 1301 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:17,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 2191 transitions. [2022-01-11 05:42:17,384 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 2191 transitions. Word has length 76 [2022-01-11 05:42:17,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:17,384 INFO L470 AbstractCegarLoop]: Abstraction has 1302 states and 2191 transitions. [2022-01-11 05:42:17,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:17,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 2191 transitions. [2022-01-11 05:42:17,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 05:42:17,386 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:17,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:17,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 05:42:17,386 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 05:42:17,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:17,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1118989055, now seen corresponding path program 1 times [2022-01-11 05:42:17,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:17,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927835248] [2022-01-11 05:42:17,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:17,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:17,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:17,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:17,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927835248] [2022-01-11 05:42:17,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927835248] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:17,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:17,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:42:17,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889635400] [2022-01-11 05:42:17,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:17,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:42:17,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:17,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:42:17,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:42:17,532 INFO L87 Difference]: Start difference. First operand 1302 states and 2191 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:17,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:17,821 INFO L93 Difference]: Finished difference Result 3840 states and 6473 transitions. [2022-01-11 05:42:17,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:42:17,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 05:42:17,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:17,832 INFO L225 Difference]: With dead ends: 3840 [2022-01-11 05:42:17,832 INFO L226 Difference]: Without dead ends: 2572 [2022-01-11 05:42:17,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:42:17,836 INFO L933 BasicCegarLoop]: 2200 mSDtfsCounter, 10671 mSDsluCounter, 2214 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10671 SdHoareTripleChecker+Valid, 4414 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:17,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10671 Valid, 4414 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:42:17,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2022-01-11 05:42:17,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 1302. [2022-01-11 05:42:17,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 1296 states have (on average 1.689043209876543) internal successors, (2189), 1301 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:17,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 2189 transitions. [2022-01-11 05:42:17,934 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 2189 transitions. Word has length 77 [2022-01-11 05:42:17,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:17,934 INFO L470 AbstractCegarLoop]: Abstraction has 1302 states and 2189 transitions. [2022-01-11 05:42:17,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:17,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 2189 transitions. [2022-01-11 05:42:17,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 05:42:17,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:17,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:17,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 05:42:17,937 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 05:42:17,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:17,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1672168356, now seen corresponding path program 1 times [2022-01-11 05:42:17,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:17,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252671772] [2022-01-11 05:42:17,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:17,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:18,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:18,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:18,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252671772] [2022-01-11 05:42:18,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252671772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:18,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:18,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:42:18,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094643600] [2022-01-11 05:42:18,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:18,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 05:42:18,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:18,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 05:42:18,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:42:18,165 INFO L87 Difference]: Start difference. First operand 1302 states and 2189 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:20,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:20,267 INFO L93 Difference]: Finished difference Result 7568 states and 12459 transitions. [2022-01-11 05:42:20,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-11 05:42:20,268 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-11 05:42:20,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:20,297 INFO L225 Difference]: With dead ends: 7568 [2022-01-11 05:42:20,297 INFO L226 Difference]: Without dead ends: 6638 [2022-01-11 05:42:20,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-11 05:42:20,304 INFO L933 BasicCegarLoop]: 3614 mSDtfsCounter, 21021 mSDsluCounter, 17854 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21021 SdHoareTripleChecker+Valid, 21468 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:20,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21021 Valid, 21468 Invalid, 1388 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-11 05:42:20,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6638 states. [2022-01-11 05:42:20,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6638 to 2356. [2022-01-11 05:42:20,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2356 states, 2350 states have (on average 1.6914893617021276) internal successors, (3975), 2355 states have internal predecessors, (3975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:20,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 3975 transitions. [2022-01-11 05:42:20,566 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 3975 transitions. Word has length 79 [2022-01-11 05:42:20,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:20,566 INFO L470 AbstractCegarLoop]: Abstraction has 2356 states and 3975 transitions. [2022-01-11 05:42:20,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:20,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 3975 transitions. [2022-01-11 05:42:20,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 05:42:20,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:20,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:20,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 05:42:20,569 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 05:42:20,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:20,569 INFO L85 PathProgramCache]: Analyzing trace with hash 121287084, now seen corresponding path program 1 times [2022-01-11 05:42:20,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:20,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252708908] [2022-01-11 05:42:20,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:20,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:20,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:20,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:20,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252708908] [2022-01-11 05:42:20,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252708908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:20,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:20,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:42:20,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234656286] [2022-01-11 05:42:20,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:20,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:42:20,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:20,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:42:20,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:42:20,722 INFO L87 Difference]: Start difference. First operand 2356 states and 3975 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:22,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:22,125 INFO L93 Difference]: Finished difference Result 8852 states and 14574 transitions. [2022-01-11 05:42:22,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 05:42:22,126 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-11 05:42:22,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:22,179 INFO L225 Difference]: With dead ends: 8852 [2022-01-11 05:42:22,179 INFO L226 Difference]: Without dead ends: 7208 [2022-01-11 05:42:22,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:42:22,189 INFO L933 BasicCegarLoop]: 3111 mSDtfsCounter, 6359 mSDsluCounter, 6222 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6359 SdHoareTripleChecker+Valid, 9333 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:22,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6359 Valid, 9333 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-11 05:42:22,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7208 states. [2022-01-11 05:42:22,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7208 to 4376. [2022-01-11 05:42:22,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4370 states have (on average 1.6810068649885583) internal successors, (7346), 4375 states have internal predecessors, (7346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:22,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 7346 transitions. [2022-01-11 05:42:22,605 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 7346 transitions. Word has length 80 [2022-01-11 05:42:22,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:22,605 INFO L470 AbstractCegarLoop]: Abstraction has 4376 states and 7346 transitions. [2022-01-11 05:42:22,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:22,606 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 7346 transitions. [2022-01-11 05:42:22,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 05:42:22,608 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:22,609 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:22,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 05:42:22,609 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 05:42:22,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:22,610 INFO L85 PathProgramCache]: Analyzing trace with hash 132603211, now seen corresponding path program 1 times [2022-01-11 05:42:22,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:22,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155418583] [2022-01-11 05:42:22,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:22,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:22,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:22,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:22,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155418583] [2022-01-11 05:42:22,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155418583] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:22,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:22,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:42:22,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981130285] [2022-01-11 05:42:22,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:22,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:42:22,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:22,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:42:22,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:42:22,732 INFO L87 Difference]: Start difference. First operand 4376 states and 7346 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:24,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:24,731 INFO L93 Difference]: Finished difference Result 28478 states and 47558 transitions. [2022-01-11 05:42:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:42:24,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-11 05:42:24,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:24,801 INFO L225 Difference]: With dead ends: 28478 [2022-01-11 05:42:24,801 INFO L226 Difference]: Without dead ends: 25546 [2022-01-11 05:42:24,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:42:24,820 INFO L933 BasicCegarLoop]: 4062 mSDtfsCounter, 15415 mSDsluCounter, 13721 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15415 SdHoareTripleChecker+Valid, 17783 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:24,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15415 Valid, 17783 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:42:24,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25546 states. [2022-01-11 05:42:25,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25546 to 8474. [2022-01-11 05:42:25,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8474 states, 8468 states have (on average 1.6785545583372696) internal successors, (14214), 8473 states have internal predecessors, (14214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:25,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8474 states to 8474 states and 14214 transitions. [2022-01-11 05:42:25,687 INFO L78 Accepts]: Start accepts. Automaton has 8474 states and 14214 transitions. Word has length 80 [2022-01-11 05:42:25,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:25,688 INFO L470 AbstractCegarLoop]: Abstraction has 8474 states and 14214 transitions. [2022-01-11 05:42:25,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:25,689 INFO L276 IsEmpty]: Start isEmpty. Operand 8474 states and 14214 transitions. [2022-01-11 05:42:25,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-11 05:42:25,695 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:25,695 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] [2022-01-11 05:42:25,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 05:42:25,696 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 05:42:25,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:25,696 INFO L85 PathProgramCache]: Analyzing trace with hash 2063775991, now seen corresponding path program 1 times [2022-01-11 05:42:25,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:25,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691991454] [2022-01-11 05:42:25,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:25,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:25,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:25,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:25,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691991454] [2022-01-11 05:42:25,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691991454] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:25,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:25,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:42:25,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005120109] [2022-01-11 05:42:25,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:25,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:42:25,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:25,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:42:25,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:42:25,826 INFO L87 Difference]: Start difference. First operand 8474 states and 14214 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:28,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:28,582 INFO L93 Difference]: Finished difference Result 38610 states and 63882 transitions. [2022-01-11 05:42:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:42:28,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-01-11 05:42:28,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:28,668 INFO L225 Difference]: With dead ends: 38610 [2022-01-11 05:42:28,668 INFO L226 Difference]: Without dead ends: 35098 [2022-01-11 05:42:28,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:42:28,696 INFO L933 BasicCegarLoop]: 7294 mSDtfsCounter, 14385 mSDsluCounter, 19569 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14385 SdHoareTripleChecker+Valid, 26863 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:28,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14385 Valid, 26863 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 05:42:28,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35098 states. [2022-01-11 05:42:29,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35098 to 8490. [2022-01-11 05:42:29,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8490 states, 8484 states have (on average 1.6772748703441773) internal successors, (14230), 8489 states have internal predecessors, (14230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:29,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8490 states to 8490 states and 14230 transitions. [2022-01-11 05:42:29,822 INFO L78 Accepts]: Start accepts. Automaton has 8490 states and 14230 transitions. Word has length 81 [2022-01-11 05:42:29,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:29,823 INFO L470 AbstractCegarLoop]: Abstraction has 8490 states and 14230 transitions. [2022-01-11 05:42:29,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:29,824 INFO L276 IsEmpty]: Start isEmpty. Operand 8490 states and 14230 transitions. [2022-01-11 05:42:29,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-11 05:42:29,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:29,830 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] [2022-01-11 05:42:29,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 05:42:29,830 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 05:42:29,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:29,831 INFO L85 PathProgramCache]: Analyzing trace with hash -866713321, now seen corresponding path program 1 times [2022-01-11 05:42:29,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:29,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781001602] [2022-01-11 05:42:29,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:29,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:29,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:29,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:29,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781001602] [2022-01-11 05:42:29,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781001602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:29,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:29,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:42:29,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200739305] [2022-01-11 05:42:29,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:29,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:42:29,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:29,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:42:29,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:42:29,931 INFO L87 Difference]: Start difference. First operand 8490 states and 14230 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:31,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:31,118 INFO L93 Difference]: Finished difference Result 25295 states and 42431 transitions. [2022-01-11 05:42:31,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:42:31,119 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-01-11 05:42:31,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:31,149 INFO L225 Difference]: With dead ends: 25295 [2022-01-11 05:42:31,149 INFO L226 Difference]: Without dead ends: 16842 [2022-01-11 05:42:31,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:42:31,163 INFO L933 BasicCegarLoop]: 4281 mSDtfsCounter, 6504 mSDsluCounter, 2142 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6504 SdHoareTripleChecker+Valid, 6423 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:31,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6504 Valid, 6423 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:42:31,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16842 states. [2022-01-11 05:42:31,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16842 to 8490. [2022-01-11 05:42:31,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8490 states, 8484 states have (on average 1.677039132484677) internal successors, (14228), 8489 states have internal predecessors, (14228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:31,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8490 states to 8490 states and 14228 transitions. [2022-01-11 05:42:31,854 INFO L78 Accepts]: Start accepts. Automaton has 8490 states and 14228 transitions. Word has length 81 [2022-01-11 05:42:31,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:31,854 INFO L470 AbstractCegarLoop]: Abstraction has 8490 states and 14228 transitions. [2022-01-11 05:42:31,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:31,854 INFO L276 IsEmpty]: Start isEmpty. Operand 8490 states and 14228 transitions. [2022-01-11 05:42:31,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 05:42:31,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:31,861 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] [2022-01-11 05:42:31,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 05:42:31,861 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 05:42:31,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:31,862 INFO L85 PathProgramCache]: Analyzing trace with hash -551041407, now seen corresponding path program 1 times [2022-01-11 05:42:31,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:31,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384379937] [2022-01-11 05:42:31,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:31,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:31,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:31,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:31,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384379937] [2022-01-11 05:42:31,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384379937] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:31,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:31,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:42:31,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518269700] [2022-01-11 05:42:31,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:31,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:42:31,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:31,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:42:31,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:42:31,976 INFO L87 Difference]: Start difference. First operand 8490 states and 14228 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:33,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:33,351 INFO L93 Difference]: Finished difference Result 20978 states and 34740 transitions. [2022-01-11 05:42:33,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:42:33,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-01-11 05:42:33,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:33,382 INFO L225 Difference]: With dead ends: 20978 [2022-01-11 05:42:33,382 INFO L226 Difference]: Without dead ends: 14226 [2022-01-11 05:42:33,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:42:33,397 INFO L933 BasicCegarLoop]: 2169 mSDtfsCounter, 8259 mSDsluCounter, 2475 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8259 SdHoareTripleChecker+Valid, 4644 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:33,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8259 Valid, 4644 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:42:33,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14226 states. [2022-01-11 05:42:34,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14226 to 8490. [2022-01-11 05:42:34,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8490 states, 8484 states have (on average 1.675153229608675) internal successors, (14212), 8489 states have internal predecessors, (14212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:34,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8490 states to 8490 states and 14212 transitions. [2022-01-11 05:42:34,372 INFO L78 Accepts]: Start accepts. Automaton has 8490 states and 14212 transitions. Word has length 82 [2022-01-11 05:42:34,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:34,372 INFO L470 AbstractCegarLoop]: Abstraction has 8490 states and 14212 transitions. [2022-01-11 05:42:34,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:34,373 INFO L276 IsEmpty]: Start isEmpty. Operand 8490 states and 14212 transitions. [2022-01-11 05:42:34,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 05:42:34,379 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:34,379 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] [2022-01-11 05:42:34,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 05:42:34,380 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 05:42:34,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:34,380 INFO L85 PathProgramCache]: Analyzing trace with hash 579511247, now seen corresponding path program 1 times [2022-01-11 05:42:34,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:34,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586285031] [2022-01-11 05:42:34,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:34,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:34,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:34,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:34,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586285031] [2022-01-11 05:42:34,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586285031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:34,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:34,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:42:34,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223365705] [2022-01-11 05:42:34,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:34,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:42:34,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:34,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:42:34,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:42:34,526 INFO L87 Difference]: Start difference. First operand 8490 states and 14212 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:38,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:38,523 INFO L93 Difference]: Finished difference Result 47058 states and 76936 transitions. [2022-01-11 05:42:38,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:42:38,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-01-11 05:42:38,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:38,596 INFO L225 Difference]: With dead ends: 47058 [2022-01-11 05:42:38,596 INFO L226 Difference]: Without dead ends: 41562 [2022-01-11 05:42:38,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:42:38,615 INFO L933 BasicCegarLoop]: 2353 mSDtfsCounter, 11275 mSDsluCounter, 10004 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11275 SdHoareTripleChecker+Valid, 12357 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:38,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11275 Valid, 12357 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 05:42:38,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41562 states. [2022-01-11 05:42:40,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41562 to 14694. [2022-01-11 05:42:40,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14694 states, 14688 states have (on average 1.647875816993464) internal successors, (24204), 14693 states have internal predecessors, (24204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:40,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14694 states to 14694 states and 24204 transitions. [2022-01-11 05:42:40,301 INFO L78 Accepts]: Start accepts. Automaton has 14694 states and 24204 transitions. Word has length 82 [2022-01-11 05:42:40,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:40,301 INFO L470 AbstractCegarLoop]: Abstraction has 14694 states and 24204 transitions. [2022-01-11 05:42:40,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:40,301 INFO L276 IsEmpty]: Start isEmpty. Operand 14694 states and 24204 transitions. [2022-01-11 05:42:40,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 05:42:40,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:40,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:40,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 05:42:40,309 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 05:42:40,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:40,310 INFO L85 PathProgramCache]: Analyzing trace with hash 187613141, now seen corresponding path program 1 times [2022-01-11 05:42:40,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:40,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345306] [2022-01-11 05:42:40,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:40,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:40,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:40,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:40,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345306] [2022-01-11 05:42:40,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:40,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:40,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:42:40,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813211200] [2022-01-11 05:42:40,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:40,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:42:40,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:40,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:42:40,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:42:40,420 INFO L87 Difference]: Start difference. First operand 14694 states and 24204 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:46,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:46,216 INFO L93 Difference]: Finished difference Result 62862 states and 102070 transitions. [2022-01-11 05:42:46,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:42:46,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-11 05:42:46,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:46,313 INFO L225 Difference]: With dead ends: 62862 [2022-01-11 05:42:46,313 INFO L226 Difference]: Without dead ends: 52874 [2022-01-11 05:42:46,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:42:46,334 INFO L933 BasicCegarLoop]: 3726 mSDtfsCounter, 7186 mSDsluCounter, 10431 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7186 SdHoareTripleChecker+Valid, 14157 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:46,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7186 Valid, 14157 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:42:46,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52874 states. [2022-01-11 05:42:48,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52874 to 14830. [2022-01-11 05:42:48,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14830 states, 14824 states have (on average 1.6419320021586616) internal successors, (24340), 14829 states have internal predecessors, (24340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:48,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14830 states to 14830 states and 24340 transitions. [2022-01-11 05:42:48,137 INFO L78 Accepts]: Start accepts. Automaton has 14830 states and 24340 transitions. Word has length 83 [2022-01-11 05:42:48,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:48,137 INFO L470 AbstractCegarLoop]: Abstraction has 14830 states and 24340 transitions. [2022-01-11 05:42:48,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:48,138 INFO L276 IsEmpty]: Start isEmpty. Operand 14830 states and 24340 transitions. [2022-01-11 05:42:48,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 05:42:48,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:48,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:48,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 05:42:48,145 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 05:42:48,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:48,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2109936406, now seen corresponding path program 1 times [2022-01-11 05:42:48,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:48,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194309348] [2022-01-11 05:42:48,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:48,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:48,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:48,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:48,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194309348] [2022-01-11 05:42:48,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194309348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:48,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:48,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:42:48,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124847166] [2022-01-11 05:42:48,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:48,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:42:48,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:48,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:42:48,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:42:48,259 INFO L87 Difference]: Start difference. First operand 14830 states and 24340 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:57,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:57,235 INFO L93 Difference]: Finished difference Result 82670 states and 134028 transitions. [2022-01-11 05:42:57,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:42:57,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-11 05:42:57,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:57,356 INFO L225 Difference]: With dead ends: 82670 [2022-01-11 05:42:57,356 INFO L226 Difference]: Without dead ends: 71618 [2022-01-11 05:42:57,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:42:57,386 INFO L933 BasicCegarLoop]: 4884 mSDtfsCounter, 8424 mSDsluCounter, 9856 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8424 SdHoareTripleChecker+Valid, 14740 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:57,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8424 Valid, 14740 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 05:42:57,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71618 states. [2022-01-11 05:43:00,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71618 to 26410. [2022-01-11 05:43:00,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26410 states, 26404 states have (on average 1.6311164975003787) internal successors, (43068), 26409 states have internal predecessors, (43068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:43:00,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26410 states to 26410 states and 43068 transitions. [2022-01-11 05:43:00,853 INFO L78 Accepts]: Start accepts. Automaton has 26410 states and 43068 transitions. Word has length 83 [2022-01-11 05:43:00,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:43:00,853 INFO L470 AbstractCegarLoop]: Abstraction has 26410 states and 43068 transitions. [2022-01-11 05:43:00,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:43:00,853 INFO L276 IsEmpty]: Start isEmpty. Operand 26410 states and 43068 transitions. [2022-01-11 05:43:00,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-11 05:43:00,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:43:00,860 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] [2022-01-11 05:43:00,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 05:43:00,861 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-11 05:43:00,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:43:00,861 INFO L85 PathProgramCache]: Analyzing trace with hash -495841785, now seen corresponding path program 1 times [2022-01-11 05:43:00,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:43:00,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115078678] [2022-01-11 05:43:00,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:43:00,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:43:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:43:01,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:43:01,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:43:01,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115078678] [2022-01-11 05:43:01,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115078678] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:43:01,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:43:01,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:43:01,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102625535] [2022-01-11 05:43:01,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:43:01,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:43:01,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:43:01,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:43:01,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:43:01,098 INFO L87 Difference]: Start difference. First operand 26410 states and 43068 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)