/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-14 20:34:24,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-14 20:34:24,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-14 20:34:24,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-14 20:34:24,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-14 20:34:24,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-14 20:34:24,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-14 20:34:24,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-14 20:34:24,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-14 20:34:24,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-14 20:34:24,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-14 20:34:24,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-14 20:34:24,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-14 20:34:24,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-14 20:34:24,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-14 20:34:24,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-14 20:34:24,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-14 20:34:24,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-14 20:34:24,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-14 20:34:24,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-14 20:34:24,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-14 20:34:24,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-14 20:34:24,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-14 20:34:24,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-14 20:34:24,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-14 20:34:24,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-14 20:34:24,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-14 20:34:24,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-14 20:34:24,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-14 20:34:24,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-14 20:34:24,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-14 20:34:24,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-14 20:34:24,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-14 20:34:24,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-14 20:34:24,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-14 20:34:24,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-14 20:34:24,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-14 20:34:24,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-14 20:34:24,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-14 20:34:24,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-14 20:34:24,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-14 20:34:24,669 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-14 20:34:24,681 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-14 20:34:24,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-14 20:34:24,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-14 20:34:24,683 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-14 20:34:24,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-14 20:34:24,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-14 20:34:24,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-14 20:34:24,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-14 20:34:24,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-14 20:34:24,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-14 20:34:24,685 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-14 20:34:24,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-14 20:34:24,685 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-14 20:34:24,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-14 20:34:24,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-14 20:34:24,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-14 20:34:24,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-14 20:34:24,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-14 20:34:24,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 20:34:24,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-14 20:34:24,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-14 20:34:24,687 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-14 20:34:24,687 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-14 20:34:24,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-14 20:34:24,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-14 20:34:24,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-14 20:34:24,920 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-14 20:34:24,921 INFO L275 PluginConnector]: CDTParser initialized [2022-02-14 20:34:24,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2022-02-14 20:34:24,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bf40ac4a/25a1fd0a937240b98a6b126aa7687531/FLAG20a063302 [2022-02-14 20:34:25,290 INFO L306 CDTParser]: Found 1 translation units. [2022-02-14 20:34:25,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2022-02-14 20:34:25,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bf40ac4a/25a1fd0a937240b98a6b126aa7687531/FLAG20a063302 [2022-02-14 20:34:25,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bf40ac4a/25a1fd0a937240b98a6b126aa7687531 [2022-02-14 20:34:25,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-14 20:34:25,706 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-14 20:34:25,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-14 20:34:25,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-14 20:34:25,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-14 20:34:25,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 08:34:25" (1/1) ... [2022-02-14 20:34:25,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eb393ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:34:25, skipping insertion in model container [2022-02-14 20:34:25,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 08:34:25" (1/1) ... [2022-02-14 20:34:25,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-14 20:34:25,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-14 20:34:25,868 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2022-02-14 20:34:25,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 20:34:25,899 INFO L203 MainTranslator]: Completed pre-run [2022-02-14 20:34:25,908 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2022-02-14 20:34:25,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 20:34:25,932 INFO L208 MainTranslator]: Completed translation [2022-02-14 20:34:25,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:34:25 WrapperNode [2022-02-14 20:34:25,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-14 20:34:25,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-14 20:34:25,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-14 20:34:25,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-14 20:34:25,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:34:25" (1/1) ... [2022-02-14 20:34:25,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:34:25" (1/1) ... [2022-02-14 20:34:25,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:34:25" (1/1) ... [2022-02-14 20:34:25,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:34:25" (1/1) ... [2022-02-14 20:34:25,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:34:25" (1/1) ... [2022-02-14 20:34:25,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:34:25" (1/1) ... [2022-02-14 20:34:25,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:34:25" (1/1) ... [2022-02-14 20:34:25,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-14 20:34:25,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-14 20:34:25,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-14 20:34:25,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-14 20:34:25,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:34:25" (1/1) ... [2022-02-14 20:34:25,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 20:34:25,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 20:34:25,989 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) [2022-02-14 20:34:26,007 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 [2022-02-14 20:34:26,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-14 20:34:26,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-14 20:34:26,023 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-14 20:34:26,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-14 20:34:26,024 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2022-02-14 20:34:26,024 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2022-02-14 20:34:26,024 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-14 20:34:26,024 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-14 20:34:26,024 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-14 20:34:26,024 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-14 20:34:26,024 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-14 20:34:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-14 20:34:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-14 20:34:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-14 20:34:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2022-02-14 20:34:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2022-02-14 20:34:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2022-02-14 20:34:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-02-14 20:34:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2022-02-14 20:34:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2022-02-14 20:34:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2022-02-14 20:34:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-02-14 20:34:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2022-02-14 20:34:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2022-02-14 20:34:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-02-14 20:34:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2022-02-14 20:34:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2022-02-14 20:34:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2022-02-14 20:34:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2022-02-14 20:34:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2022-02-14 20:34:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2022-02-14 20:34:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2022-02-14 20:34:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2022-02-14 20:34:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2022-02-14 20:34:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2022-02-14 20:34:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2022-02-14 20:34:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2022-02-14 20:34:26,028 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2022-02-14 20:34:26,028 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2022-02-14 20:34:26,028 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2022-02-14 20:34:26,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-14 20:34:26,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-14 20:34:26,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-14 20:34:26,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-14 20:34:26,028 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-14 20:34:26,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-14 20:34:26,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-14 20:34:26,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-14 20:34:26,130 INFO L234 CfgBuilder]: Building ICFG [2022-02-14 20:34:26,131 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-14 20:34:26,295 INFO L275 CfgBuilder]: Performing block encoding [2022-02-14 20:34:26,301 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-14 20:34:26,301 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-02-14 20:34:26,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:34:26 BoogieIcfgContainer [2022-02-14 20:34:26,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-14 20:34:26,303 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-14 20:34:26,304 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-14 20:34:26,307 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-14 20:34:26,313 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:34:26" (1/1) ... [2022-02-14 20:34:26,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 08:34:26 BasicIcfg [2022-02-14 20:34:26,330 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-14 20:34:26,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-14 20:34:26,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-14 20:34:26,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-14 20:34:26,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 08:34:25" (1/4) ... [2022-02-14 20:34:26,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ba1480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 08:34:26, skipping insertion in model container [2022-02-14 20:34:26,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:34:25" (2/4) ... [2022-02-14 20:34:26,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ba1480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 08:34:26, skipping insertion in model container [2022-02-14 20:34:26,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:34:26" (3/4) ... [2022-02-14 20:34:26,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ba1480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 08:34:26, skipping insertion in model container [2022-02-14 20:34:26,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 08:34:26" (4/4) ... [2022-02-14 20:34:26,337 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.iJordan [2022-02-14 20:34:26,341 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-14 20:34:26,341 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-14 20:34:26,378 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-14 20:34:26,383 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2022-02-14 20:34:26,383 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-14 20:34:26,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 39 states have (on average 1.435897435897436) internal successors, (56), 40 states have internal predecessors, (56), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-14 20:34:26,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-14 20:34:26,400 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:34:26,401 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] [2022-02-14 20:34:26,401 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:34:26,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:34:26,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1482838745, now seen corresponding path program 1 times [2022-02-14 20:34:26,412 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:34:26,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052846737] [2022-02-14 20:34:26,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:34:26,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:34:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:26,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:34:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:26,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-14 20:34:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:26,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:34:26,586 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:34:26,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052846737] [2022-02-14 20:34:26,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052846737] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 20:34:26,587 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 20:34:26,587 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-14 20:34:26,589 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486728661] [2022-02-14 20:34:26,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 20:34:26,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-14 20:34:26,593 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:34:26,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-14 20:34:26,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-14 20:34:26,616 INFO L87 Difference]: Start difference. First operand has 51 states, 39 states have (on average 1.435897435897436) internal successors, (56), 40 states have internal predecessors, (56), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-14 20:34:26,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:34:26,657 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2022-02-14 20:34:26,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-14 20:34:26,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-02-14 20:34:26,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:34:26,667 INFO L225 Difference]: With dead ends: 51 [2022-02-14 20:34:26,668 INFO L226 Difference]: Without dead ends: 43 [2022-02-14 20:34:26,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-14 20:34:26,672 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 49 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 20:34:26,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 62 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 20:34:26,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-02-14 20:34:26,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-02-14 20:34:26,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-14 20:34:26,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2022-02-14 20:34:26,702 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 29 [2022-02-14 20:34:26,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:34:26,703 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2022-02-14 20:34:26,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-14 20:34:26,703 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2022-02-14 20:34:26,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-14 20:34:26,704 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:34:26,704 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] [2022-02-14 20:34:26,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-14 20:34:26,705 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:34:26,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:34:26,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1955249573, now seen corresponding path program 1 times [2022-02-14 20:34:26,706 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:34:26,706 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068191084] [2022-02-14 20:34:26,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:34:26,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:34:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:26,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:34:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:26,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-02-14 20:34:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:26,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:34:26,777 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:34:26,777 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068191084] [2022-02-14 20:34:26,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068191084] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 20:34:26,777 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 20:34:26,777 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-14 20:34:26,778 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428676522] [2022-02-14 20:34:26,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 20:34:26,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-14 20:34:26,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:34:26,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-14 20:34:26,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-14 20:34:26,780 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-14 20:34:26,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:34:26,876 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2022-02-14 20:34:26,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-14 20:34:26,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-02-14 20:34:26,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:34:26,878 INFO L225 Difference]: With dead ends: 44 [2022-02-14 20:34:26,879 INFO L226 Difference]: Without dead ends: 44 [2022-02-14 20:34:26,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-14 20:34:26,880 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 42 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 20:34:26,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 56 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 20:34:26,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-02-14 20:34:26,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-02-14 20:34:26,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 35 states have internal predecessors, (45), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-14 20:34:26,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2022-02-14 20:34:26,887 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 33 [2022-02-14 20:34:26,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:34:26,887 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2022-02-14 20:34:26,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-14 20:34:26,888 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2022-02-14 20:34:26,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-14 20:34:26,889 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:34:26,889 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] [2022-02-14 20:34:26,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-14 20:34:26,889 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:34:26,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:34:26,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1743898660, now seen corresponding path program 1 times [2022-02-14 20:34:26,890 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:34:26,890 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292743348] [2022-02-14 20:34:26,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:34:26,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:34:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:26,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:34:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:27,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-02-14 20:34:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:27,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:34:27,007 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:34:27,007 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292743348] [2022-02-14 20:34:27,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292743348] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 20:34:27,008 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 20:34:27,008 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-14 20:34:27,008 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79937271] [2022-02-14 20:34:27,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 20:34:27,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-14 20:34:27,009 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:34:27,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-14 20:34:27,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-14 20:34:27,010 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-14 20:34:27,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:34:27,224 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2022-02-14 20:34:27,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-14 20:34:27,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-02-14 20:34:27,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:34:27,235 INFO L225 Difference]: With dead ends: 71 [2022-02-14 20:34:27,236 INFO L226 Difference]: Without dead ends: 71 [2022-02-14 20:34:27,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-02-14 20:34:27,237 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 118 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 20:34:27,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 56 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 20:34:27,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-02-14 20:34:27,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 52. [2022-02-14 20:34:27,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 states have internal predecessors, (56), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-14 20:34:27,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2022-02-14 20:34:27,247 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 33 [2022-02-14 20:34:27,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:34:27,247 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2022-02-14 20:34:27,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-14 20:34:27,247 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2022-02-14 20:34:27,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-14 20:34:27,248 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:34:27,248 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] [2022-02-14 20:34:27,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-14 20:34:27,249 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:34:27,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:34:27,249 INFO L85 PathProgramCache]: Analyzing trace with hash 883199996, now seen corresponding path program 1 times [2022-02-14 20:34:27,250 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:34:27,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648760213] [2022-02-14 20:34:27,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:34:27,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:34:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:27,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:34:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:27,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-02-14 20:34:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:27,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:34:27,390 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:34:27,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648760213] [2022-02-14 20:34:27,390 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648760213] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 20:34:27,390 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 20:34:27,390 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-14 20:34:27,390 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459857017] [2022-02-14 20:34:27,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 20:34:27,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-14 20:34:27,391 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:34:27,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-14 20:34:27,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-02-14 20:34:27,392 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-14 20:34:27,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:34:27,680 INFO L93 Difference]: Finished difference Result 115 states and 151 transitions. [2022-02-14 20:34:27,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-14 20:34:27,681 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-02-14 20:34:27,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:34:27,682 INFO L225 Difference]: With dead ends: 115 [2022-02-14 20:34:27,682 INFO L226 Difference]: Without dead ends: 90 [2022-02-14 20:34:27,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-02-14 20:34:27,687 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 140 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-14 20:34:27,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 77 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-14 20:34:27,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-02-14 20:34:27,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 59. [2022-02-14 20:34:27,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.28) internal successors, (64), 50 states have internal predecessors, (64), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-14 20:34:27,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 72 transitions. [2022-02-14 20:34:27,695 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 72 transitions. Word has length 33 [2022-02-14 20:34:27,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:34:27,696 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 72 transitions. [2022-02-14 20:34:27,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-14 20:34:27,696 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 72 transitions. [2022-02-14 20:34:27,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-14 20:34:27,697 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:34:27,697 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] [2022-02-14 20:34:27,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-14 20:34:27,697 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:34:27,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:34:27,698 INFO L85 PathProgramCache]: Analyzing trace with hash -113872357, now seen corresponding path program 1 times [2022-02-14 20:34:27,698 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:34:27,698 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16525278] [2022-02-14 20:34:27,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:34:27,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:34:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:27,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:34:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:27,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-02-14 20:34:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:34:27,876 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:34:27,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16525278] [2022-02-14 20:34:27,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16525278] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 20:34:27,877 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 20:34:27,877 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-14 20:34:27,877 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239086610] [2022-02-14 20:34:27,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 20:34:27,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-14 20:34:27,878 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:34:27,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-14 20:34:27,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-02-14 20:34:27,879 INFO L87 Difference]: Start difference. First operand 59 states and 72 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-14 20:34:28,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:34:28,178 INFO L93 Difference]: Finished difference Result 111 states and 142 transitions. [2022-02-14 20:34:28,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-14 20:34:28,179 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-02-14 20:34:28,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:34:28,181 INFO L225 Difference]: With dead ends: 111 [2022-02-14 20:34:28,181 INFO L226 Difference]: Without dead ends: 111 [2022-02-14 20:34:28,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-02-14 20:34:28,182 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 184 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-14 20:34:28,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 66 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-14 20:34:28,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-02-14 20:34:28,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 91. [2022-02-14 20:34:28,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 80 states have internal predecessors, (103), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-14 20:34:28,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 115 transitions. [2022-02-14 20:34:28,190 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 115 transitions. Word has length 33 [2022-02-14 20:34:28,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:34:28,191 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 115 transitions. [2022-02-14 20:34:28,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-14 20:34:28,191 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 115 transitions. [2022-02-14 20:34:28,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-14 20:34:28,192 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:34:28,193 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] [2022-02-14 20:34:28,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-14 20:34:28,193 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:34:28,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:34:28,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1490560960, now seen corresponding path program 1 times [2022-02-14 20:34:28,194 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:34:28,194 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417512698] [2022-02-14 20:34:28,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:34:28,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:34:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:28,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:34:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:28,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-14 20:34:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:28,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:34:28,232 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:34:28,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417512698] [2022-02-14 20:34:28,232 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417512698] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 20:34:28,232 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 20:34:28,232 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-14 20:34:28,232 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986663244] [2022-02-14 20:34:28,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 20:34:28,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-14 20:34:28,233 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:34:28,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-14 20:34:28,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-14 20:34:28,234 INFO L87 Difference]: Start difference. First operand 91 states and 115 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-14 20:34:28,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:34:28,308 INFO L93 Difference]: Finished difference Result 99 states and 123 transitions. [2022-02-14 20:34:28,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-14 20:34:28,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2022-02-14 20:34:28,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:34:28,311 INFO L225 Difference]: With dead ends: 99 [2022-02-14 20:34:28,311 INFO L226 Difference]: Without dead ends: 99 [2022-02-14 20:34:28,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-14 20:34:28,312 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 44 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 20:34:28,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 61 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 20:34:28,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-02-14 20:34:28,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-02-14 20:34:28,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 87 states have (on average 1.2758620689655173) internal successors, (111), 88 states have internal predecessors, (111), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-14 20:34:28,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 123 transitions. [2022-02-14 20:34:28,319 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 123 transitions. Word has length 35 [2022-02-14 20:34:28,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:34:28,319 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 123 transitions. [2022-02-14 20:34:28,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-14 20:34:28,320 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 123 transitions. [2022-02-14 20:34:28,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-14 20:34:28,321 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:34:28,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:34:28,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-14 20:34:28,321 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:34:28,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:34:28,322 INFO L85 PathProgramCache]: Analyzing trace with hash 980026783, now seen corresponding path program 1 times [2022-02-14 20:34:28,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:34:28,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579443190] [2022-02-14 20:34:28,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:34:28,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:34:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:28,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:34:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:28,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-14 20:34:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:28,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:34:28,373 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:34:28,373 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579443190] [2022-02-14 20:34:28,373 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579443190] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 20:34:28,373 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 20:34:28,373 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-14 20:34:28,373 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455323741] [2022-02-14 20:34:28,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 20:34:28,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-14 20:34:28,374 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:34:28,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-14 20:34:28,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-02-14 20:34:28,374 INFO L87 Difference]: Start difference. First operand 99 states and 123 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-14 20:34:28,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:34:28,546 INFO L93 Difference]: Finished difference Result 120 states and 144 transitions. [2022-02-14 20:34:28,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-14 20:34:28,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2022-02-14 20:34:28,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:34:28,549 INFO L225 Difference]: With dead ends: 120 [2022-02-14 20:34:28,549 INFO L226 Difference]: Without dead ends: 120 [2022-02-14 20:34:28,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-02-14 20:34:28,550 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 125 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 20:34:28,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 57 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 20:34:28,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-02-14 20:34:28,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 90. [2022-02-14 20:34:28,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 78 states have (on average 1.2307692307692308) internal successors, (96), 79 states have internal predecessors, (96), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-14 20:34:28,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2022-02-14 20:34:28,557 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 35 [2022-02-14 20:34:28,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:34:28,557 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2022-02-14 20:34:28,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-14 20:34:28,557 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2022-02-14 20:34:28,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-14 20:34:28,558 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:34:28,558 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:34:28,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-14 20:34:28,558 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:34:28,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:34:28,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1227057006, now seen corresponding path program 1 times [2022-02-14 20:34:28,559 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:34:28,559 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582798883] [2022-02-14 20:34:28,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:34:28,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:34:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:28,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:34:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:28,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-14 20:34:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-14 20:34:28,681 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:34:28,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582798883] [2022-02-14 20:34:28,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582798883] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 20:34:28,682 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 20:34:28,682 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-14 20:34:28,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960573331] [2022-02-14 20:34:28,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 20:34:28,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-14 20:34:28,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:34:28,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-14 20:34:28,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-02-14 20:34:28,683 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-14 20:34:28,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:34:28,943 INFO L93 Difference]: Finished difference Result 130 states and 161 transitions. [2022-02-14 20:34:28,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-14 20:34:28,943 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-02-14 20:34:28,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:34:28,944 INFO L225 Difference]: With dead ends: 130 [2022-02-14 20:34:28,944 INFO L226 Difference]: Without dead ends: 125 [2022-02-14 20:34:28,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-02-14 20:34:28,945 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 193 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-14 20:34:28,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 86 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-14 20:34:28,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-02-14 20:34:28,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 104. [2022-02-14 20:34:28,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 92 states have (on average 1.25) internal successors, (115), 93 states have internal predecessors, (115), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-14 20:34:28,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 127 transitions. [2022-02-14 20:34:28,952 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 127 transitions. Word has length 38 [2022-02-14 20:34:28,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:34:28,953 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 127 transitions. [2022-02-14 20:34:28,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-14 20:34:28,954 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 127 transitions. [2022-02-14 20:34:28,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-14 20:34:28,954 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:34:28,955 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:34:28,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-14 20:34:28,955 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:34:28,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:34:28,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1122955826, now seen corresponding path program 1 times [2022-02-14 20:34:28,955 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:34:28,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33113174] [2022-02-14 20:34:28,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:34:28,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:34:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:29,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:34:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:29,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-14 20:34:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:34:29,009 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:34:29,009 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33113174] [2022-02-14 20:34:29,009 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33113174] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 20:34:29,009 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444122569] [2022-02-14 20:34:29,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:34:29,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 20:34:29,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 20:34:29,011 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-14 20:34:29,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-14 20:34:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:29,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-14 20:34:29,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 20:34:29,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:34:29,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 20:34:29,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:34:29,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444122569] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 20:34:29,388 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-14 20:34:29,388 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 8 [2022-02-14 20:34:29,388 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578653608] [2022-02-14 20:34:29,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-14 20:34:29,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-14 20:34:29,389 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:34:29,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-14 20:34:29,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-14 20:34:29,390 INFO L87 Difference]: Start difference. First operand 104 states and 127 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-14 20:34:29,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:34:29,634 INFO L93 Difference]: Finished difference Result 188 states and 231 transitions. [2022-02-14 20:34:29,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-14 20:34:29,635 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2022-02-14 20:34:29,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:34:29,636 INFO L225 Difference]: With dead ends: 188 [2022-02-14 20:34:29,636 INFO L226 Difference]: Without dead ends: 179 [2022-02-14 20:34:29,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-02-14 20:34:29,637 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 189 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-14 20:34:29,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 62 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-14 20:34:29,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-02-14 20:34:29,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 141. [2022-02-14 20:34:29,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 127 states have (on average 1.220472440944882) internal successors, (155), 128 states have internal predecessors, (155), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-14 20:34:29,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 171 transitions. [2022-02-14 20:34:29,645 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 171 transitions. Word has length 40 [2022-02-14 20:34:29,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:34:29,645 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 171 transitions. [2022-02-14 20:34:29,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-14 20:34:29,645 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 171 transitions. [2022-02-14 20:34:29,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-14 20:34:29,647 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:34:29,647 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:34:29,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-14 20:34:29,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 20:34:29,871 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:34:29,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:34:29,871 INFO L85 PathProgramCache]: Analyzing trace with hash 598095488, now seen corresponding path program 2 times [2022-02-14 20:34:29,871 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:34:29,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008242418] [2022-02-14 20:34:29,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:34:29,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:34:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:29,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:34:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:29,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-14 20:34:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:29,990 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:34:29,990 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:34:29,990 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008242418] [2022-02-14 20:34:29,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008242418] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 20:34:29,991 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003753067] [2022-02-14 20:34:29,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-14 20:34:29,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 20:34:29,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 20:34:29,992 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-14 20:34:29,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-14 20:34:30,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-14 20:34:30,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 20:34:30,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-14 20:34:30,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 20:34:30,288 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:34:30,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 20:34:30,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:34:30,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003753067] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 20:34:30,414 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-14 20:34:30,414 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 22 [2022-02-14 20:34:30,414 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985357503] [2022-02-14 20:34:30,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-14 20:34:30,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-14 20:34:30,415 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:34:30,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-14 20:34:30,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2022-02-14 20:34:30,416 INFO L87 Difference]: Start difference. First operand 141 states and 171 transitions. Second operand has 22 states, 22 states have (on average 4.2272727272727275) internal successors, (93), 20 states have internal predecessors, (93), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-02-14 20:34:31,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:34:31,518 INFO L93 Difference]: Finished difference Result 411 states and 518 transitions. [2022-02-14 20:34:31,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-14 20:34:31,519 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.2272727272727275) internal successors, (93), 20 states have internal predecessors, (93), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 45 [2022-02-14 20:34:31,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:34:31,520 INFO L225 Difference]: With dead ends: 411 [2022-02-14 20:34:31,520 INFO L226 Difference]: Without dead ends: 259 [2022-02-14 20:34:31,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=422, Invalid=1648, Unknown=0, NotChecked=0, Total=2070 [2022-02-14 20:34:31,522 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 765 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-14 20:34:31,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 112 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-14 20:34:31,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-02-14 20:34:31,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 162. [2022-02-14 20:34:31,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 150 states have (on average 1.2266666666666666) internal successors, (184), 151 states have internal predecessors, (184), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-14 20:34:31,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 196 transitions. [2022-02-14 20:34:31,530 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 196 transitions. Word has length 45 [2022-02-14 20:34:31,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:34:31,530 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 196 transitions. [2022-02-14 20:34:31,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.2272727272727275) internal successors, (93), 20 states have internal predecessors, (93), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-02-14 20:34:31,531 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 196 transitions. [2022-02-14 20:34:31,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-14 20:34:31,532 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:34:31,532 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:34:31,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-14 20:34:31,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-02-14 20:34:31,745 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:34:31,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:34:31,746 INFO L85 PathProgramCache]: Analyzing trace with hash 189271263, now seen corresponding path program 1 times [2022-02-14 20:34:31,746 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:34:31,746 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923465039] [2022-02-14 20:34:31,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:34:31,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:34:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:31,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:34:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:31,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-14 20:34:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:34:31,846 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:34:31,846 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923465039] [2022-02-14 20:34:31,846 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923465039] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 20:34:31,846 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837901457] [2022-02-14 20:34:31,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:34:31,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 20:34:31,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 20:34:31,848 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-14 20:34:31,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-14 20:34:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:34:31,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-14 20:34:31,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 20:34:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:34:32,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 20:34:32,429 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:34:32,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837901457] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 20:34:32,429 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-14 20:34:32,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-14 20:34:32,430 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068015451] [2022-02-14 20:34:32,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-14 20:34:32,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-14 20:34:32,430 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:34:32,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-14 20:34:32,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2022-02-14 20:34:32,431 INFO L87 Difference]: Start difference. First operand 162 states and 196 transitions. Second operand has 25 states, 25 states have (on average 4.04) internal successors, (101), 22 states have internal predecessors, (101), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-14 20:34:33,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:34:33,200 INFO L93 Difference]: Finished difference Result 303 states and 374 transitions. [2022-02-14 20:34:33,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-14 20:34:33,200 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.04) internal successors, (101), 22 states have internal predecessors, (101), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 45 [2022-02-14 20:34:33,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:34:33,202 INFO L225 Difference]: With dead ends: 303 [2022-02-14 20:34:33,202 INFO L226 Difference]: Without dead ends: 303 [2022-02-14 20:34:33,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=350, Invalid=1542, Unknown=0, NotChecked=0, Total=1892 [2022-02-14 20:34:33,204 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 589 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-14 20:34:33,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [591 Valid, 87 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-14 20:34:33,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-02-14 20:34:33,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 184. [2022-02-14 20:34:33,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 172 states have (on average 1.2616279069767442) internal successors, (217), 173 states have internal predecessors, (217), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-14 20:34:33,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 229 transitions. [2022-02-14 20:34:33,212 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 229 transitions. Word has length 45 [2022-02-14 20:34:33,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:34:33,212 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 229 transitions. [2022-02-14 20:34:33,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.04) internal successors, (101), 22 states have internal predecessors, (101), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-14 20:34:33,213 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 229 transitions. [2022-02-14 20:34:33,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-14 20:34:33,213 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:34:33,214 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:34:33,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-14 20:34:33,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 20:34:33,427 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:34:33,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:34:33,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1607680096, now seen corresponding path program 1 times [2022-02-14 20:34:33,428 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:34:33,428 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198970021] [2022-02-14 20:34:33,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:34:33,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:34:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-14 20:34:33,449 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-14 20:34:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-14 20:34:33,486 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-14 20:34:33,487 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-14 20:34:33,487 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-14 20:34:33,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-14 20:34:33,492 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:34:33,494 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-14 20:34:33,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 08:34:33 BasicIcfg [2022-02-14 20:34:33,541 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-14 20:34:33,541 INFO L158 Benchmark]: Toolchain (without parser) took 7835.64ms. Allocated memory was 201.3MB in the beginning and 259.0MB in the end (delta: 57.7MB). Free memory was 148.4MB in the beginning and 84.4MB in the end (delta: 64.0MB). Peak memory consumption was 122.4MB. Max. memory is 8.0GB. [2022-02-14 20:34:33,541 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 201.3MB. Free memory is still 164.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-14 20:34:33,542 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.09ms. Allocated memory is still 201.3MB. Free memory was 148.1MB in the beginning and 171.9MB in the end (delta: -23.8MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. [2022-02-14 20:34:33,542 INFO L158 Benchmark]: Boogie Preprocessor took 31.46ms. Allocated memory is still 201.3MB. Free memory was 171.9MB in the beginning and 169.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-14 20:34:33,542 INFO L158 Benchmark]: RCFGBuilder took 338.09ms. Allocated memory is still 201.3MB. Free memory was 169.9MB in the beginning and 154.6MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-02-14 20:34:33,542 INFO L158 Benchmark]: IcfgTransformer took 26.79ms. Allocated memory is still 201.3MB. Free memory was 154.6MB in the beginning and 152.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-14 20:34:33,543 INFO L158 Benchmark]: TraceAbstraction took 7209.38ms. Allocated memory was 201.3MB in the beginning and 259.0MB in the end (delta: 57.7MB). Free memory was 152.0MB in the beginning and 84.4MB in the end (delta: 67.7MB). Peak memory consumption was 126.9MB. Max. memory is 8.0GB. [2022-02-14 20:34:33,544 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 201.3MB. Free memory is still 164.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 221.09ms. Allocated memory is still 201.3MB. Free memory was 148.1MB in the beginning and 171.9MB in the end (delta: -23.8MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.46ms. Allocated memory is still 201.3MB. Free memory was 171.9MB in the beginning and 169.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 338.09ms. Allocated memory is still 201.3MB. Free memory was 169.9MB in the beginning and 154.6MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * IcfgTransformer took 26.79ms. Allocated memory is still 201.3MB. Free memory was 154.6MB in the beginning and 152.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 7209.38ms. Allocated memory was 201.3MB in the beginning and 259.0MB in the end (delta: 57.7MB). Free memory was 152.0MB in the beginning and 84.4MB in the end (delta: 67.7MB). Peak memory consumption was 126.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L85] char A [2 + 2 + 4 +1]; [L86] A[2 + 2 + 4] = 0 VAL [A={4:0}] [L87] CALL parse_expression_list (A) VAL [str={4:0}] [L59] int start=0, i=-1, j=-1; [L60] char str2[2]; VAL [i=-1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}] [L61] COND FALSE !(!str) VAL [i=-1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}] [L63] i++ [L64] str[i] [L65] case 0: VAL [i=0, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=52] [L80] EXPR str[i] VAL [i=0, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=52] [L80] COND TRUE str[i] != 0 [L63] i++ [L64] str[i] [L65] case 0: VAL [i=1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=50] [L80] EXPR str[i] VAL [i=1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=50] [L80] COND TRUE str[i] != 0 [L63] i++ [L64] str[i] [L65] case 0: VAL [i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L66] EXPR str[start] [L66] (str[start] == ' ') || (str[start] == '\t') [L66] EXPR str[start] [L66] (str[start] == ' ') || (str[start] == '\t') VAL [(str[start] == ' ') || (str[start] == '\t')=0, i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[start]=52, str[start]=52] [L66] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L67] EXPR str[start] VAL [i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[start]=52] [L67] COND FALSE !(str[start] == '"') [L68] j = i-1 VAL [i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L69] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L69] EXPR str[j] [L69] EXPR (str[j] == ' ') || (str[j] == '\t') [L69] EXPR str[j] [L69] EXPR (str[j] == ' ') || (str[j] == '\t') VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=1, (str[j] == ' ') || (str[j] == '\t')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=50, str[j]=50] [L69] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=0, (str[j] == ' ') || (str[j] == '\t')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=50, str[j]=50] [L69] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L70] (0 < j) && (str[j] == '"') [L70] EXPR str[j] [L70] (0 < j) && (str[j] == '"') VAL [(0 < j) && (str[j] == '"')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=50] [L70] COND FALSE !((0 < j) && (str[j] == '"')) [L71] COND TRUE start<=j VAL [i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L72] CALL r_strncpy(str2, str+start, j-start+1) VAL [\old(n)=2, dest={3:0}, src={4:0}] [L41] return strncpy(dest,src,n); [L72] RET r_strncpy(str2, str+start, j-start+1) VAL [i=2, j=1, r_strncpy(str2, str+start, j-start+1)={54:53}, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L73] CALL __VERIFIER_assert(j - start + 1 < 2) VAL [\old(cond)=0] [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L15] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.1s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2461 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2438 mSDsluCounter, 782 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 238 mSDsCounter, 591 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3932 IncrementalHoareTripleChecker+Invalid, 4523 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 591 mSolverCounterUnsat, 544 mSDtfsCounter, 3932 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 459 GetRequests, 288 SyntacticMatches, 3 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=11, InterpolantAutomatonStates: 116, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 375 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 574 NumberOfCodeBlocks, 574 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 642 ConstructedInterpolants, 0 QuantifiedInterpolants, 2022 SizeOfPredicates, 7 NumberOfNonLiveVariables, 548 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 17 InterpolantComputations, 8 PerfectInterpolantSequences, 2/62 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-02-14 20:34:33,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...