./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem01_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem01_label02.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c0f41b7d074691792fd10e7dba36f11652ac022c2313237070654cd8c5fa3312 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 08:38:57,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 08:38:57,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 08:38:57,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 08:38:57,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 08:38:57,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 08:38:57,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 08:38:57,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 08:38:57,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 08:38:57,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 08:38:57,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 08:38:57,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 08:38:57,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 08:38:57,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 08:38:57,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 08:38:57,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 08:38:57,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 08:38:57,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 08:38:57,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 08:38:57,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 08:38:57,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 08:38:57,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 08:38:57,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 08:38:57,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 08:38:57,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 08:38:57,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 08:38:57,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 08:38:57,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 08:38:57,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 08:38:57,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 08:38:57,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 08:38:57,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 08:38:57,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 08:38:57,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 08:38:57,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 08:38:57,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 08:38:57,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 08:38:57,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 08:38:57,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 08:38:57,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 08:38:57,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 08:38:57,769 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 08:38:57,784 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 08:38:57,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 08:38:57,784 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 08:38:57,785 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 08:38:57,785 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 08:38:57,786 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 08:38:57,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 08:38:57,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 08:38:57,787 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 08:38:57,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 08:38:57,788 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 08:38:57,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 08:38:57,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 08:38:57,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 08:38:57,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 08:38:57,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 08:38:57,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 08:38:57,789 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 08:38:57,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 08:38:57,789 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 08:38:57,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 08:38:57,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 08:38:57,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 08:38:57,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 08:38:57,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 08:38:57,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 08:38:57,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 08:38:57,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 08:38:57,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 08:38:57,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 08:38:57,791 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 08:38:57,791 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 08:38:57,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 08:38:57,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 08:38:57,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0f41b7d074691792fd10e7dba36f11652ac022c2313237070654cd8c5fa3312 [2021-12-22 08:38:57,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 08:38:57,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 08:38:57,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 08:38:57,985 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 08:38:57,985 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 08:38:57,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem01_label02.c [2021-12-22 08:38:58,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef41c610d/af815fdb678b41ab91318db6fe659805/FLAGa914bbba7 [2021-12-22 08:38:58,454 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 08:38:58,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label02.c [2021-12-22 08:38:58,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef41c610d/af815fdb678b41ab91318db6fe659805/FLAGa914bbba7 [2021-12-22 08:38:58,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef41c610d/af815fdb678b41ab91318db6fe659805 [2021-12-22 08:38:58,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 08:38:58,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 08:38:58,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 08:38:58,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 08:38:58,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 08:38:58,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:38:58" (1/1) ... [2021-12-22 08:38:58,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11c42155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:38:58, skipping insertion in model container [2021-12-22 08:38:58,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:38:58" (1/1) ... [2021-12-22 08:38:58,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 08:38:58,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 08:38:58,774 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label02.c[16747,16760] [2021-12-22 08:38:58,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 08:38:58,825 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 08:38:58,880 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label02.c[16747,16760] [2021-12-22 08:38:58,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 08:38:58,920 INFO L208 MainTranslator]: Completed translation [2021-12-22 08:38:58,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:38:58 WrapperNode [2021-12-22 08:38:58,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 08:38:58,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 08:38:58,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 08:38:58,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 08:38:58,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:38:58" (1/1) ... [2021-12-22 08:38:58,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:38:58" (1/1) ... [2021-12-22 08:38:59,003 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2021-12-22 08:38:59,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 08:38:59,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 08:38:59,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 08:38:59,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 08:38:59,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:38:58" (1/1) ... [2021-12-22 08:38:59,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:38:58" (1/1) ... [2021-12-22 08:38:59,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:38:58" (1/1) ... [2021-12-22 08:38:59,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:38:58" (1/1) ... [2021-12-22 08:38:59,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:38:58" (1/1) ... [2021-12-22 08:38:59,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:38:58" (1/1) ... [2021-12-22 08:38:59,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:38:58" (1/1) ... [2021-12-22 08:38:59,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 08:38:59,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 08:38:59,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 08:38:59,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 08:38:59,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:38:58" (1/1) ... [2021-12-22 08:38:59,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 08:38:59,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 08:38:59,111 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) [2021-12-22 08:38:59,180 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 [2021-12-22 08:38:59,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 08:38:59,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 08:38:59,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 08:38:59,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 08:38:59,288 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 08:38:59,289 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 08:38:59,939 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 08:38:59,949 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 08:38:59,949 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 08:38:59,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:38:59 BoogieIcfgContainer [2021-12-22 08:38:59,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 08:38:59,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 08:38:59,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 08:38:59,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 08:38:59,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:38:58" (1/3) ... [2021-12-22 08:38:59,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fcf241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:38:59, skipping insertion in model container [2021-12-22 08:38:59,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:38:58" (2/3) ... [2021-12-22 08:38:59,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fcf241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:38:59, skipping insertion in model container [2021-12-22 08:38:59,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:38:59" (3/3) ... [2021-12-22 08:38:59,959 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label02.c [2021-12-22 08:38:59,966 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 08:38:59,966 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 08:39:00,009 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 08:39:00,014 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 08:39:00,014 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 08:39:00,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 196 states have (on average 1.6683673469387754) internal successors, (327), 197 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:00,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-22 08:39:00,043 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:39:00,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:39:00,044 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:39:00,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:39:00,048 INFO L85 PathProgramCache]: Analyzing trace with hash -776841673, now seen corresponding path program 1 times [2021-12-22 08:39:00,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:39:00,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241079429] [2021-12-22 08:39:00,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:39:00,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:39:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:39:00,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:39:00,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:39:00,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241079429] [2021-12-22 08:39:00,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241079429] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:39:00,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:39:00,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 08:39:00,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593176616] [2021-12-22 08:39:00,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:39:00,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:39:00,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:39:00,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:39:00,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:39:00,316 INFO L87 Difference]: Start difference. First operand has 198 states, 196 states have (on average 1.6683673469387754) internal successors, (327), 197 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:00,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:39:00,945 INFO L93 Difference]: Finished difference Result 528 states and 915 transitions. [2021-12-22 08:39:00,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:39:00,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-12-22 08:39:00,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:39:00,963 INFO L225 Difference]: With dead ends: 528 [2021-12-22 08:39:00,964 INFO L226 Difference]: Without dead ends: 266 [2021-12-22 08:39:00,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:39:00,974 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 98 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 08:39:00,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 51 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 08:39:00,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-12-22 08:39:01,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-12-22 08:39:01,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.4566037735849056) internal successors, (386), 265 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:01,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 386 transitions. [2021-12-22 08:39:01,008 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 386 transitions. Word has length 90 [2021-12-22 08:39:01,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:39:01,009 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 386 transitions. [2021-12-22 08:39:01,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:01,009 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 386 transitions. [2021-12-22 08:39:01,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-22 08:39:01,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:39:01,011 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:39:01,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 08:39:01,012 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:39:01,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:39:01,013 INFO L85 PathProgramCache]: Analyzing trace with hash 904352266, now seen corresponding path program 1 times [2021-12-22 08:39:01,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:39:01,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345956537] [2021-12-22 08:39:01,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:39:01,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:39:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:39:01,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:39:01,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:39:01,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345956537] [2021-12-22 08:39:01,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345956537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:39:01,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:39:01,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 08:39:01,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474211062] [2021-12-22 08:39:01,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:39:01,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:39:01,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:39:01,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:39:01,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:39:01,055 INFO L87 Difference]: Start difference. First operand 266 states and 386 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:01,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:39:01,353 INFO L93 Difference]: Finished difference Result 792 states and 1153 transitions. [2021-12-22 08:39:01,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:39:01,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-22 08:39:01,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:39:01,355 INFO L225 Difference]: With dead ends: 792 [2021-12-22 08:39:01,355 INFO L226 Difference]: Without dead ends: 528 [2021-12-22 08:39:01,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:39:01,357 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 142 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:39:01,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 36 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:39:01,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-12-22 08:39:01,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2021-12-22 08:39:01,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 1.3795066413662238) internal successors, (727), 527 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:01,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 727 transitions. [2021-12-22 08:39:01,382 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 727 transitions. Word has length 96 [2021-12-22 08:39:01,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:39:01,383 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 727 transitions. [2021-12-22 08:39:01,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:01,384 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 727 transitions. [2021-12-22 08:39:01,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-22 08:39:01,389 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:39:01,389 INFO L514 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:39:01,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 08:39:01,390 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:39:01,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:39:01,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1983827210, now seen corresponding path program 1 times [2021-12-22 08:39:01,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:39:01,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380012609] [2021-12-22 08:39:01,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:39:01,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:39:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:39:01,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-22 08:39:01,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:39:01,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380012609] [2021-12-22 08:39:01,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380012609] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:39:01,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:39:01,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 08:39:01,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300212146] [2021-12-22 08:39:01,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:39:01,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:39:01,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:39:01,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:39:01,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:39:01,492 INFO L87 Difference]: Start difference. First operand 528 states and 727 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:01,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:39:01,779 INFO L93 Difference]: Finished difference Result 1578 states and 2176 transitions. [2021-12-22 08:39:01,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:39:01,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-22 08:39:01,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:39:01,784 INFO L225 Difference]: With dead ends: 1578 [2021-12-22 08:39:01,784 INFO L226 Difference]: Without dead ends: 1052 [2021-12-22 08:39:01,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:39:01,791 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 59 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:39:01,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 31 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:39:01,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2021-12-22 08:39:01,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 659. [2021-12-22 08:39:01,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 658 states have (on average 1.3768996960486322) internal successors, (906), 658 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:01,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 906 transitions. [2021-12-22 08:39:01,810 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 906 transitions. Word has length 97 [2021-12-22 08:39:01,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:39:01,811 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 906 transitions. [2021-12-22 08:39:01,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:01,811 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 906 transitions. [2021-12-22 08:39:01,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-22 08:39:01,812 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:39:01,813 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:39:01,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 08:39:01,813 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:39:01,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:39:01,814 INFO L85 PathProgramCache]: Analyzing trace with hash -963864069, now seen corresponding path program 1 times [2021-12-22 08:39:01,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:39:01,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187126549] [2021-12-22 08:39:01,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:39:01,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:39:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:39:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:39:01,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:39:01,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187126549] [2021-12-22 08:39:01,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187126549] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:39:01,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:39:01,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 08:39:01,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202986221] [2021-12-22 08:39:01,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:39:01,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:39:01,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:39:01,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:39:01,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:39:01,860 INFO L87 Difference]: Start difference. First operand 659 states and 906 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:02,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:39:02,128 INFO L93 Difference]: Finished difference Result 1578 states and 2156 transitions. [2021-12-22 08:39:02,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:39:02,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-12-22 08:39:02,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:39:02,131 INFO L225 Difference]: With dead ends: 1578 [2021-12-22 08:39:02,131 INFO L226 Difference]: Without dead ends: 921 [2021-12-22 08:39:02,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:39:02,132 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 134 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:39:02,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 55 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:39:02,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2021-12-22 08:39:02,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 921. [2021-12-22 08:39:02,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 920 states have (on average 1.308695652173913) internal successors, (1204), 920 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:02,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1204 transitions. [2021-12-22 08:39:02,145 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1204 transitions. Word has length 103 [2021-12-22 08:39:02,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:39:02,146 INFO L470 AbstractCegarLoop]: Abstraction has 921 states and 1204 transitions. [2021-12-22 08:39:02,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:02,146 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1204 transitions. [2021-12-22 08:39:02,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-22 08:39:02,152 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:39:02,152 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:39:02,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 08:39:02,152 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:39:02,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:39:02,153 INFO L85 PathProgramCache]: Analyzing trace with hash -887722715, now seen corresponding path program 1 times [2021-12-22 08:39:02,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:39:02,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4917996] [2021-12-22 08:39:02,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:39:02,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:39:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:39:02,186 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-22 08:39:02,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:39:02,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4917996] [2021-12-22 08:39:02,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4917996] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:39:02,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:39:02,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 08:39:02,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640038124] [2021-12-22 08:39:02,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:39:02,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:39:02,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:39:02,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:39:02,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:39:02,189 INFO L87 Difference]: Start difference. First operand 921 states and 1204 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:02,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:39:02,480 INFO L93 Difference]: Finished difference Result 2364 states and 3056 transitions. [2021-12-22 08:39:02,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:39:02,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-12-22 08:39:02,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:39:02,484 INFO L225 Difference]: With dead ends: 2364 [2021-12-22 08:39:02,484 INFO L226 Difference]: Without dead ends: 1445 [2021-12-22 08:39:02,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:39:02,486 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 137 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:39:02,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 47 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:39:02,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2021-12-22 08:39:02,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1183. [2021-12-22 08:39:02,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 1.2859560067681894) internal successors, (1520), 1182 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:02,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1520 transitions. [2021-12-22 08:39:02,505 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1520 transitions. Word has length 116 [2021-12-22 08:39:02,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:39:02,505 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 1520 transitions. [2021-12-22 08:39:02,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:02,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1520 transitions. [2021-12-22 08:39:02,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-22 08:39:02,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:39:02,508 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:39:02,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 08:39:02,508 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:39:02,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:39:02,509 INFO L85 PathProgramCache]: Analyzing trace with hash -2095190628, now seen corresponding path program 1 times [2021-12-22 08:39:02,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:39:02,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006114524] [2021-12-22 08:39:02,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:39:02,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:39:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:39:02,541 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-22 08:39:02,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:39:02,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006114524] [2021-12-22 08:39:02,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006114524] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:39:02,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:39:02,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 08:39:02,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496179865] [2021-12-22 08:39:02,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:39:02,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:39:02,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:39:02,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:39:02,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:39:02,544 INFO L87 Difference]: Start difference. First operand 1183 states and 1520 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:02,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:39:02,813 INFO L93 Difference]: Finished difference Result 2495 states and 3205 transitions. [2021-12-22 08:39:02,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:39:02,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-12-22 08:39:02,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:39:02,816 INFO L225 Difference]: With dead ends: 2495 [2021-12-22 08:39:02,816 INFO L226 Difference]: Without dead ends: 1314 [2021-12-22 08:39:02,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:39:02,818 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 121 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:39:02,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 74 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:39:02,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2021-12-22 08:39:02,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1314. [2021-12-22 08:39:02,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 1313 states have (on average 1.2711348057882712) internal successors, (1669), 1313 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:02,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1669 transitions. [2021-12-22 08:39:02,835 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1669 transitions. Word has length 118 [2021-12-22 08:39:02,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:39:02,836 INFO L470 AbstractCegarLoop]: Abstraction has 1314 states and 1669 transitions. [2021-12-22 08:39:02,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:02,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1669 transitions. [2021-12-22 08:39:02,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-22 08:39:02,838 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:39:02,838 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:39:02,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 08:39:02,838 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:39:02,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:39:02,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1811589588, now seen corresponding path program 1 times [2021-12-22 08:39:02,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:39:02,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314346814] [2021-12-22 08:39:02,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:39:02,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:39:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:39:02,876 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-22 08:39:02,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:39:02,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314346814] [2021-12-22 08:39:02,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314346814] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:39:02,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:39:02,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 08:39:02,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661610855] [2021-12-22 08:39:02,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:39:02,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 08:39:02,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:39:02,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 08:39:02,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 08:39:02,881 INFO L87 Difference]: Start difference. First operand 1314 states and 1669 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:03,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:39:03,287 INFO L93 Difference]: Finished difference Result 3019 states and 3777 transitions. [2021-12-22 08:39:03,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 08:39:03,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-12-22 08:39:03,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:39:03,292 INFO L225 Difference]: With dead ends: 3019 [2021-12-22 08:39:03,292 INFO L226 Difference]: Without dead ends: 1707 [2021-12-22 08:39:03,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 08:39:03,294 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 386 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 08:39:03,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 71 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 08:39:03,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-12-22 08:39:03,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1576. [2021-12-22 08:39:03,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1575 states have (on average 1.2412698412698413) internal successors, (1955), 1575 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:03,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 1955 transitions. [2021-12-22 08:39:03,330 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 1955 transitions. Word has length 122 [2021-12-22 08:39:03,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:39:03,331 INFO L470 AbstractCegarLoop]: Abstraction has 1576 states and 1955 transitions. [2021-12-22 08:39:03,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:03,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 1955 transitions. [2021-12-22 08:39:03,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-22 08:39:03,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:39:03,334 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:39:03,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 08:39:03,334 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:39:03,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:39:03,336 INFO L85 PathProgramCache]: Analyzing trace with hash 650221427, now seen corresponding path program 1 times [2021-12-22 08:39:03,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:39:03,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969485339] [2021-12-22 08:39:03,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:39:03,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:39:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:39:03,419 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 49 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:39:03,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:39:03,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969485339] [2021-12-22 08:39:03,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969485339] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 08:39:03,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443718436] [2021-12-22 08:39:03,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:39:03,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:39:03,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 08:39:03,422 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) [2021-12-22 08:39:03,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 08:39:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:39:03,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 08:39:03,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 08:39:03,725 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-22 08:39:03,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 08:39:03,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443718436] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:39:03,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 08:39:03,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-12-22 08:39:03,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343858868] [2021-12-22 08:39:03,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:39:03,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:39:03,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:39:03,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:39:03,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:39:03,727 INFO L87 Difference]: Start difference. First operand 1576 states and 1955 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:04,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:39:04,021 INFO L93 Difference]: Finished difference Result 3674 states and 4578 transitions. [2021-12-22 08:39:04,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:39:04,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-12-22 08:39:04,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:39:04,029 INFO L225 Difference]: With dead ends: 3674 [2021-12-22 08:39:04,029 INFO L226 Difference]: Without dead ends: 2100 [2021-12-22 08:39:04,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:39:04,030 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 66 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:39:04,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 31 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:39:04,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2021-12-22 08:39:04,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1969. [2021-12-22 08:39:04,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1969 states, 1968 states have (on average 1.217479674796748) internal successors, (2396), 1968 states have internal predecessors, (2396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:04,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 2396 transitions. [2021-12-22 08:39:04,059 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 2396 transitions. Word has length 140 [2021-12-22 08:39:04,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:39:04,060 INFO L470 AbstractCegarLoop]: Abstraction has 1969 states and 2396 transitions. [2021-12-22 08:39:04,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:04,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 2396 transitions. [2021-12-22 08:39:04,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-22 08:39:04,063 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:39:04,063 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:39:04,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 08:39:04,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:39:04,282 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:39:04,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:39:04,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1361137988, now seen corresponding path program 1 times [2021-12-22 08:39:04,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:39:04,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357106927] [2021-12-22 08:39:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:39:04,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:39:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:39:04,349 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 82 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-22 08:39:04,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:39:04,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357106927] [2021-12-22 08:39:04,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357106927] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 08:39:04,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50095018] [2021-12-22 08:39:04,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:39:04,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:39:04,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 08:39:04,352 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) [2021-12-22 08:39:04,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 08:39:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:39:04,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 08:39:04,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 08:39:04,662 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-22 08:39:04,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 08:39:04,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50095018] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:39:04,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 08:39:04,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-12-22 08:39:04,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486793407] [2021-12-22 08:39:04,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:39:04,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:39:04,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:39:04,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:39:04,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:39:04,664 INFO L87 Difference]: Start difference. First operand 1969 states and 2396 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:04,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:39:04,957 INFO L93 Difference]: Finished difference Result 4460 states and 5459 transitions. [2021-12-22 08:39:04,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:39:04,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-12-22 08:39:04,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:39:04,964 INFO L225 Difference]: With dead ends: 4460 [2021-12-22 08:39:04,964 INFO L226 Difference]: Without dead ends: 2493 [2021-12-22 08:39:04,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:39:04,967 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 49 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:39:04,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 193 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:39:04,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2021-12-22 08:39:04,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2231. [2021-12-22 08:39:04,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2231 states, 2230 states have (on average 1.2080717488789237) internal successors, (2694), 2230 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:04,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 2694 transitions. [2021-12-22 08:39:04,999 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 2694 transitions. Word has length 163 [2021-12-22 08:39:04,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:39:05,000 INFO L470 AbstractCegarLoop]: Abstraction has 2231 states and 2694 transitions. [2021-12-22 08:39:05,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:05,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 2694 transitions. [2021-12-22 08:39:05,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-22 08:39:05,003 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:39:05,003 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:39:05,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 08:39:05,220 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,SelfDestructingSolverStorable8 [2021-12-22 08:39:05,221 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:39:05,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:39:05,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1645727001, now seen corresponding path program 1 times [2021-12-22 08:39:05,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:39:05,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995966872] [2021-12-22 08:39:05,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:39:05,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:39:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:39:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-22 08:39:05,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:39:05,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995966872] [2021-12-22 08:39:05,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995966872] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:39:05,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:39:05,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 08:39:05,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568030378] [2021-12-22 08:39:05,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:39:05,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:39:05,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:39:05,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:39:05,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:39:05,284 INFO L87 Difference]: Start difference. First operand 2231 states and 2694 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:05,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:39:05,547 INFO L93 Difference]: Finished difference Result 4591 states and 5560 transitions. [2021-12-22 08:39:05,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:39:05,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-12-22 08:39:05,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:39:05,553 INFO L225 Difference]: With dead ends: 4591 [2021-12-22 08:39:05,553 INFO L226 Difference]: Without dead ends: 2362 [2021-12-22 08:39:05,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:39:05,556 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 94 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:39:05,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 60 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:39:05,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2021-12-22 08:39:05,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2362. [2021-12-22 08:39:05,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 2361 states have (on average 1.1994917407878019) internal successors, (2832), 2361 states have internal predecessors, (2832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:05,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 2832 transitions. [2021-12-22 08:39:05,590 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 2832 transitions. Word has length 176 [2021-12-22 08:39:05,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:39:05,591 INFO L470 AbstractCegarLoop]: Abstraction has 2362 states and 2832 transitions. [2021-12-22 08:39:05,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:05,591 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 2832 transitions. [2021-12-22 08:39:05,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-22 08:39:05,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:39:05,594 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:39:05,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 08:39:05,595 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:39:05,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:39:05,595 INFO L85 PathProgramCache]: Analyzing trace with hash -836738982, now seen corresponding path program 1 times [2021-12-22 08:39:05,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:39:05,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138136566] [2021-12-22 08:39:05,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:39:05,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:39:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:39:05,707 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 101 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:39:05,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:39:05,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138136566] [2021-12-22 08:39:05,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138136566] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 08:39:05,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382129864] [2021-12-22 08:39:05,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:39:05,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:39:05,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 08:39:05,711 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) [2021-12-22 08:39:05,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 08:39:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:39:05,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 08:39:05,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 08:39:06,010 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-22 08:39:06,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 08:39:06,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382129864] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:39:06,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 08:39:06,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-12-22 08:39:06,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556992604] [2021-12-22 08:39:06,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:39:06,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:39:06,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:39:06,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:39:06,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:39:06,011 INFO L87 Difference]: Start difference. First operand 2362 states and 2832 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:06,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:39:06,317 INFO L93 Difference]: Finished difference Result 6032 states and 7225 transitions. [2021-12-22 08:39:06,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:39:06,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2021-12-22 08:39:06,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:39:06,327 INFO L225 Difference]: With dead ends: 6032 [2021-12-22 08:39:06,327 INFO L226 Difference]: Without dead ends: 3672 [2021-12-22 08:39:06,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:39:06,330 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 67 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:39:06,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 31 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:39:06,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2021-12-22 08:39:06,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 3410. [2021-12-22 08:39:06,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3410 states, 3409 states have (on average 1.188911704312115) internal successors, (4053), 3409 states have internal predecessors, (4053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:06,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3410 states to 3410 states and 4053 transitions. [2021-12-22 08:39:06,374 INFO L78 Accepts]: Start accepts. Automaton has 3410 states and 4053 transitions. Word has length 189 [2021-12-22 08:39:06,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:39:06,374 INFO L470 AbstractCegarLoop]: Abstraction has 3410 states and 4053 transitions. [2021-12-22 08:39:06,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:06,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3410 states and 4053 transitions. [2021-12-22 08:39:06,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-22 08:39:06,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:39:06,379 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:39:06,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 08:39:06,599 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 [2021-12-22 08:39:06,599 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:39:06,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:39:06,600 INFO L85 PathProgramCache]: Analyzing trace with hash 347086668, now seen corresponding path program 1 times [2021-12-22 08:39:06,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:39:06,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836228664] [2021-12-22 08:39:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:39:06,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:39:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:39:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2021-12-22 08:39:06,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:39:06,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836228664] [2021-12-22 08:39:06,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836228664] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:39:06,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:39:06,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 08:39:06,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323279043] [2021-12-22 08:39:06,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:39:06,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:39:06,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:39:06,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:39:06,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:39:06,644 INFO L87 Difference]: Start difference. First operand 3410 states and 4053 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:06,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:39:06,931 INFO L93 Difference]: Finished difference Result 7211 states and 8563 transitions. [2021-12-22 08:39:06,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:39:06,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2021-12-22 08:39:06,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:39:06,938 INFO L225 Difference]: With dead ends: 7211 [2021-12-22 08:39:06,939 INFO L226 Difference]: Without dead ends: 3410 [2021-12-22 08:39:06,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:39:06,941 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 137 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:39:06,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 191 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:39:06,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3410 states. [2021-12-22 08:39:06,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3410 to 3148. [2021-12-22 08:39:06,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3148 states, 3147 states have (on average 1.1035907213218938) internal successors, (3473), 3147 states have internal predecessors, (3473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:06,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 3473 transitions. [2021-12-22 08:39:06,975 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 3473 transitions. Word has length 201 [2021-12-22 08:39:06,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:39:06,976 INFO L470 AbstractCegarLoop]: Abstraction has 3148 states and 3473 transitions. [2021-12-22 08:39:06,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:06,976 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 3473 transitions. [2021-12-22 08:39:06,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-12-22 08:39:06,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:39:06,981 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:39:06,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 08:39:06,981 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:39:06,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:39:06,982 INFO L85 PathProgramCache]: Analyzing trace with hash 901044654, now seen corresponding path program 1 times [2021-12-22 08:39:06,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:39:06,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756682049] [2021-12-22 08:39:06,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:39:06,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:39:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:39:07,029 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 161 proven. 6 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-12-22 08:39:07,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:39:07,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756682049] [2021-12-22 08:39:07,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756682049] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 08:39:07,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378390722] [2021-12-22 08:39:07,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:39:07,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:39:07,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 08:39:07,031 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 08:39:07,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 08:39:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:39:07,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 08:39:07,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 08:39:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-12-22 08:39:07,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 08:39:07,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378390722] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:39:07,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 08:39:07,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-22 08:39:07,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814722982] [2021-12-22 08:39:07,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:39:07,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:39:07,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:39:07,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:39:07,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 08:39:07,400 INFO L87 Difference]: Start difference. First operand 3148 states and 3473 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:07,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:39:07,651 INFO L93 Difference]: Finished difference Result 6687 states and 7401 transitions. [2021-12-22 08:39:07,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:39:07,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2021-12-22 08:39:07,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:39:07,660 INFO L225 Difference]: With dead ends: 6687 [2021-12-22 08:39:07,661 INFO L226 Difference]: Without dead ends: 3541 [2021-12-22 08:39:07,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 08:39:07,664 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 55 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:39:07,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 169 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:39:07,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2021-12-22 08:39:07,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 3410. [2021-12-22 08:39:07,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3410 states, 3409 states have (on average 1.0903490759753593) internal successors, (3717), 3409 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:07,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3410 states to 3410 states and 3717 transitions. [2021-12-22 08:39:07,705 INFO L78 Accepts]: Start accepts. Automaton has 3410 states and 3717 transitions. Word has length 221 [2021-12-22 08:39:07,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:39:07,706 INFO L470 AbstractCegarLoop]: Abstraction has 3410 states and 3717 transitions. [2021-12-22 08:39:07,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:07,706 INFO L276 IsEmpty]: Start isEmpty. Operand 3410 states and 3717 transitions. [2021-12-22 08:39:07,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-12-22 08:39:07,711 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:39:07,712 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:39:07,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 08:39:07,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:39:07,927 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:39:07,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:39:07,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1726679257, now seen corresponding path program 1 times [2021-12-22 08:39:07,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:39:07,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955694738] [2021-12-22 08:39:07,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:39:07,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:39:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:39:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 228 proven. 6 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-12-22 08:39:07,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:39:07,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955694738] [2021-12-22 08:39:07,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955694738] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 08:39:07,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437811927] [2021-12-22 08:39:07,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:39:07,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:39:07,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 08:39:07,991 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 08:39:07,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 08:39:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:39:08,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 08:39:08,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 08:39:08,383 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-12-22 08:39:08,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 08:39:08,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437811927] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:39:08,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 08:39:08,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-22 08:39:08,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407333932] [2021-12-22 08:39:08,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:39:08,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:39:08,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:39:08,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:39:08,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 08:39:08,386 INFO L87 Difference]: Start difference. First operand 3410 states and 3717 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:08,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:39:08,648 INFO L93 Difference]: Finished difference Result 7080 states and 7718 transitions. [2021-12-22 08:39:08,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:39:08,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 260 [2021-12-22 08:39:08,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:39:08,656 INFO L225 Difference]: With dead ends: 7080 [2021-12-22 08:39:08,656 INFO L226 Difference]: Without dead ends: 3541 [2021-12-22 08:39:08,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 08:39:08,659 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 109 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:39:08,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 175 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:39:08,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2021-12-22 08:39:08,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 3410. [2021-12-22 08:39:08,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3410 states, 3409 states have (on average 1.0765620416544441) internal successors, (3670), 3409 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:08,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3410 states to 3410 states and 3670 transitions. [2021-12-22 08:39:08,709 INFO L78 Accepts]: Start accepts. Automaton has 3410 states and 3670 transitions. Word has length 260 [2021-12-22 08:39:08,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:39:08,709 INFO L470 AbstractCegarLoop]: Abstraction has 3410 states and 3670 transitions. [2021-12-22 08:39:08,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:08,710 INFO L276 IsEmpty]: Start isEmpty. Operand 3410 states and 3670 transitions. [2021-12-22 08:39:08,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-12-22 08:39:08,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:39:08,715 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:39:08,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 08:39:08,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-22 08:39:08,924 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:39:08,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:39:08,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1381679681, now seen corresponding path program 1 times [2021-12-22 08:39:08,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:39:08,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445288299] [2021-12-22 08:39:08,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:39:08,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:39:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:39:09,000 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 233 proven. 6 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-12-22 08:39:09,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:39:09,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445288299] [2021-12-22 08:39:09,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445288299] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 08:39:09,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873811397] [2021-12-22 08:39:09,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:39:09,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:39:09,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 08:39:09,003 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 08:39:09,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 08:39:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:39:09,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 08:39:09,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 08:39:09,413 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 273 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-12-22 08:39:09,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 08:39:09,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873811397] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:39:09,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 08:39:09,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-22 08:39:09,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651214996] [2021-12-22 08:39:09,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:39:09,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:39:09,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:39:09,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:39:09,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 08:39:09,415 INFO L87 Difference]: Start difference. First operand 3410 states and 3670 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:09,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:39:09,679 INFO L93 Difference]: Finished difference Result 6816 states and 7332 transitions. [2021-12-22 08:39:09,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:39:09,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2021-12-22 08:39:09,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:39:09,680 INFO L225 Difference]: With dead ends: 6816 [2021-12-22 08:39:09,680 INFO L226 Difference]: Without dead ends: 0 [2021-12-22 08:39:09,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 08:39:09,693 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 108 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:39:09,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 179 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:39:09,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-22 08:39:09,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-22 08:39:09,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:09,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-22 08:39:09,695 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 265 [2021-12-22 08:39:09,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:39:09,695 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 08:39:09,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:39:09,695 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-22 08:39:09,695 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-22 08:39:09,697 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 08:39:09,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-22 08:39:09,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-22 08:39:09,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-22 08:39:10,553 INFO L858 garLoopResultBuilder]: For program point L564(line 564) no Hoare annotation was computed. [2021-12-22 08:39:10,554 INFO L858 garLoopResultBuilder]: For program point L531(line 531) no Hoare annotation was computed. [2021-12-22 08:39:10,554 INFO L858 garLoopResultBuilder]: For program point L498(line 498) no Hoare annotation was computed. [2021-12-22 08:39:10,554 INFO L858 garLoopResultBuilder]: For program point L465(line 465) no Hoare annotation was computed. [2021-12-22 08:39:10,554 INFO L858 garLoopResultBuilder]: For program point L432(line 432) no Hoare annotation was computed. [2021-12-22 08:39:10,554 INFO L858 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-12-22 08:39:10,554 INFO L858 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-12-22 08:39:10,554 INFO L858 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-12-22 08:39:10,554 INFO L858 garLoopResultBuilder]: For program point L566-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,554 INFO L858 garLoopResultBuilder]: For program point L533-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,554 INFO L858 garLoopResultBuilder]: For program point L500-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,554 INFO L858 garLoopResultBuilder]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,554 INFO L858 garLoopResultBuilder]: For program point L401(lines 401 403) no Hoare annotation was computed. [2021-12-22 08:39:10,554 INFO L858 garLoopResultBuilder]: For program point L434-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,554 INFO L858 garLoopResultBuilder]: For program point L401-2(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,554 INFO L858 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-12-22 08:39:10,555 INFO L858 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-12-22 08:39:10,555 INFO L858 garLoopResultBuilder]: For program point L567(line 567) no Hoare annotation was computed. [2021-12-22 08:39:10,555 INFO L858 garLoopResultBuilder]: For program point L534(line 534) no Hoare annotation was computed. [2021-12-22 08:39:10,555 INFO L858 garLoopResultBuilder]: For program point L501(line 501) no Hoare annotation was computed. [2021-12-22 08:39:10,555 INFO L858 garLoopResultBuilder]: For program point L468(line 468) no Hoare annotation was computed. [2021-12-22 08:39:10,555 INFO L858 garLoopResultBuilder]: For program point L435(line 435) no Hoare annotation was computed. [2021-12-22 08:39:10,555 INFO L858 garLoopResultBuilder]: For program point L402(line 402) no Hoare annotation was computed. [2021-12-22 08:39:10,555 INFO L858 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-12-22 08:39:10,555 INFO L858 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-12-22 08:39:10,555 INFO L858 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-12-22 08:39:10,556 INFO L858 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-12-22 08:39:10,556 INFO L858 garLoopResultBuilder]: For program point L569-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,556 INFO L858 garLoopResultBuilder]: For program point L536-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,556 INFO L858 garLoopResultBuilder]: For program point L503-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,556 INFO L858 garLoopResultBuilder]: For program point L470-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,556 INFO L858 garLoopResultBuilder]: For program point L437-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,556 INFO L858 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-12-22 08:39:10,556 INFO L858 garLoopResultBuilder]: For program point L404-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,556 INFO L858 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-12-22 08:39:10,556 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-12-22 08:39:10,557 INFO L858 garLoopResultBuilder]: For program point L570(line 570) no Hoare annotation was computed. [2021-12-22 08:39:10,557 INFO L858 garLoopResultBuilder]: For program point L537(line 537) no Hoare annotation was computed. [2021-12-22 08:39:10,557 INFO L858 garLoopResultBuilder]: For program point L504(line 504) no Hoare annotation was computed. [2021-12-22 08:39:10,557 INFO L858 garLoopResultBuilder]: For program point L471(line 471) no Hoare annotation was computed. [2021-12-22 08:39:10,557 INFO L858 garLoopResultBuilder]: For program point L438(line 438) no Hoare annotation was computed. [2021-12-22 08:39:10,557 INFO L858 garLoopResultBuilder]: For program point L405(line 405) no Hoare annotation was computed. [2021-12-22 08:39:10,557 INFO L858 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-12-22 08:39:10,557 INFO L858 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-12-22 08:39:10,557 INFO L858 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-12-22 08:39:10,557 INFO L858 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-12-22 08:39:10,558 INFO L858 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-12-22 08:39:10,558 INFO L858 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-12-22 08:39:10,558 INFO L858 garLoopResultBuilder]: For program point L572-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,558 INFO L858 garLoopResultBuilder]: For program point L539-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,558 INFO L858 garLoopResultBuilder]: For program point L506-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,558 INFO L858 garLoopResultBuilder]: For program point L473-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,558 INFO L858 garLoopResultBuilder]: For program point L440-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,558 INFO L858 garLoopResultBuilder]: For program point L407-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,558 INFO L858 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-12-22 08:39:10,558 INFO L858 garLoopResultBuilder]: For program point L573(line 573) no Hoare annotation was computed. [2021-12-22 08:39:10,558 INFO L858 garLoopResultBuilder]: For program point L540(line 540) no Hoare annotation was computed. [2021-12-22 08:39:10,558 INFO L858 garLoopResultBuilder]: For program point L507(line 507) no Hoare annotation was computed. [2021-12-22 08:39:10,558 INFO L858 garLoopResultBuilder]: For program point L474(line 474) no Hoare annotation was computed. [2021-12-22 08:39:10,558 INFO L858 garLoopResultBuilder]: For program point L441(line 441) no Hoare annotation was computed. [2021-12-22 08:39:10,558 INFO L858 garLoopResultBuilder]: For program point L408(line 408) no Hoare annotation was computed. [2021-12-22 08:39:10,558 INFO L858 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-12-22 08:39:10,558 INFO L858 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-12-22 08:39:10,558 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-12-22 08:39:10,558 INFO L858 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-12-22 08:39:10,559 INFO L858 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-12-22 08:39:10,559 INFO L858 garLoopResultBuilder]: For program point L575-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,559 INFO L858 garLoopResultBuilder]: For program point L542-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,561 INFO L858 garLoopResultBuilder]: For program point L509-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,562 INFO L858 garLoopResultBuilder]: For program point L476-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,562 INFO L858 garLoopResultBuilder]: For program point L443-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,562 INFO L858 garLoopResultBuilder]: For program point L410-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,562 INFO L858 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-12-22 08:39:10,562 INFO L858 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-12-22 08:39:10,562 INFO L858 garLoopResultBuilder]: For program point L576(line 576) no Hoare annotation was computed. [2021-12-22 08:39:10,564 INFO L858 garLoopResultBuilder]: For program point L543(line 543) no Hoare annotation was computed. [2021-12-22 08:39:10,564 INFO L858 garLoopResultBuilder]: For program point L510(line 510) no Hoare annotation was computed. [2021-12-22 08:39:10,564 INFO L858 garLoopResultBuilder]: For program point L477(line 477) no Hoare annotation was computed. [2021-12-22 08:39:10,565 INFO L858 garLoopResultBuilder]: For program point L444(line 444) no Hoare annotation was computed. [2021-12-22 08:39:10,565 INFO L858 garLoopResultBuilder]: For program point L411(line 411) no Hoare annotation was computed. [2021-12-22 08:39:10,565 INFO L858 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-12-22 08:39:10,565 INFO L858 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-12-22 08:39:10,565 INFO L858 garLoopResultBuilder]: For program point L578-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,565 INFO L858 garLoopResultBuilder]: For program point L545-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,566 INFO L858 garLoopResultBuilder]: For program point L512-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,566 INFO L858 garLoopResultBuilder]: For program point L479-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,566 INFO L858 garLoopResultBuilder]: For program point L446-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,566 INFO L858 garLoopResultBuilder]: For program point L413-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,566 INFO L858 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-12-22 08:39:10,566 INFO L858 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-12-22 08:39:10,567 INFO L858 garLoopResultBuilder]: For program point L579(line 579) no Hoare annotation was computed. [2021-12-22 08:39:10,567 INFO L858 garLoopResultBuilder]: For program point L546(line 546) no Hoare annotation was computed. [2021-12-22 08:39:10,567 INFO L858 garLoopResultBuilder]: For program point L513(line 513) no Hoare annotation was computed. [2021-12-22 08:39:10,567 INFO L858 garLoopResultBuilder]: For program point L480(line 480) no Hoare annotation was computed. [2021-12-22 08:39:10,567 INFO L858 garLoopResultBuilder]: For program point L447(line 447) no Hoare annotation was computed. [2021-12-22 08:39:10,567 INFO L858 garLoopResultBuilder]: For program point L414(line 414) no Hoare annotation was computed. [2021-12-22 08:39:10,567 INFO L858 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-12-22 08:39:10,568 INFO L858 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-12-22 08:39:10,568 INFO L858 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-12-22 08:39:10,568 INFO L858 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-12-22 08:39:10,568 INFO L858 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-12-22 08:39:10,568 INFO L858 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-12-22 08:39:10,568 INFO L858 garLoopResultBuilder]: For program point L581-1(lines 581 583) no Hoare annotation was computed. [2021-12-22 08:39:10,569 INFO L858 garLoopResultBuilder]: For program point L548-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,569 INFO L858 garLoopResultBuilder]: For program point L515-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,569 INFO L858 garLoopResultBuilder]: For program point L482-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,569 INFO L858 garLoopResultBuilder]: For program point L449-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,569 INFO L858 garLoopResultBuilder]: For program point L416-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,569 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-22 08:39:10,569 INFO L858 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-12-22 08:39:10,569 INFO L858 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-12-22 08:39:10,569 INFO L858 garLoopResultBuilder]: For program point L582(line 582) no Hoare annotation was computed. [2021-12-22 08:39:10,569 INFO L858 garLoopResultBuilder]: For program point L549(line 549) no Hoare annotation was computed. [2021-12-22 08:39:10,569 INFO L858 garLoopResultBuilder]: For program point L516(line 516) no Hoare annotation was computed. [2021-12-22 08:39:10,569 INFO L858 garLoopResultBuilder]: For program point L483(line 483) no Hoare annotation was computed. [2021-12-22 08:39:10,569 INFO L858 garLoopResultBuilder]: For program point L450(line 450) no Hoare annotation was computed. [2021-12-22 08:39:10,569 INFO L858 garLoopResultBuilder]: For program point L417(line 417) no Hoare annotation was computed. [2021-12-22 08:39:10,569 INFO L858 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-12-22 08:39:10,570 INFO L854 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse2 (<= ~a16~0 4)) (.cse6 (<= ~a20~0 0)) (.cse7 (<= 14 ~a8~0)) (.cse4 (= ~a21~0 1)) (.cse0 (<= ~a8~0 13)) (.cse5 (<= ~a21~0 0)) (.cse1 (= ~a17~0 1)) (.cse3 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and (<= ~a7~0 0) .cse4 .cse3) (and .cse4 .cse1 .cse3) (and .cse0 (or (and .cse5 .cse3) (and .cse5 .cse1)) .cse2) (and .cse0 (<= 6 ~a16~0) .cse3) (and .cse6 .cse2) (and .cse6 .cse7) (and .cse7 .cse4 .cse3) (and .cse0 .cse5 .cse1 .cse3))) [2021-12-22 08:39:10,570 INFO L858 garLoopResultBuilder]: For program point L551-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,570 INFO L858 garLoopResultBuilder]: For program point L518-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,570 INFO L858 garLoopResultBuilder]: For program point L485-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,570 INFO L858 garLoopResultBuilder]: For program point L452-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,570 INFO L858 garLoopResultBuilder]: For program point L419-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,570 INFO L858 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-12-22 08:39:10,570 INFO L858 garLoopResultBuilder]: For program point L552(line 552) no Hoare annotation was computed. [2021-12-22 08:39:10,570 INFO L858 garLoopResultBuilder]: For program point L519(line 519) no Hoare annotation was computed. [2021-12-22 08:39:10,570 INFO L858 garLoopResultBuilder]: For program point L486(line 486) no Hoare annotation was computed. [2021-12-22 08:39:10,570 INFO L858 garLoopResultBuilder]: For program point L453(line 453) no Hoare annotation was computed. [2021-12-22 08:39:10,570 INFO L858 garLoopResultBuilder]: For program point L420(line 420) no Hoare annotation was computed. [2021-12-22 08:39:10,570 INFO L858 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-12-22 08:39:10,571 INFO L858 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-12-22 08:39:10,571 INFO L858 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-12-22 08:39:10,571 INFO L858 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-12-22 08:39:10,571 INFO L858 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-12-22 08:39:10,571 INFO L858 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-12-22 08:39:10,571 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-22 08:39:10,571 INFO L858 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-12-22 08:39:10,571 INFO L861 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-12-22 08:39:10,571 INFO L858 garLoopResultBuilder]: For program point L554-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,571 INFO L858 garLoopResultBuilder]: For program point L521-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,571 INFO L858 garLoopResultBuilder]: For program point L488-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,571 INFO L858 garLoopResultBuilder]: For program point L455-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,571 INFO L858 garLoopResultBuilder]: For program point L422-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,572 INFO L858 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-12-22 08:39:10,572 INFO L858 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-12-22 08:39:10,572 INFO L858 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-12-22 08:39:10,572 INFO L858 garLoopResultBuilder]: For program point L555(line 555) no Hoare annotation was computed. [2021-12-22 08:39:10,572 INFO L858 garLoopResultBuilder]: For program point L522(line 522) no Hoare annotation was computed. [2021-12-22 08:39:10,572 INFO L858 garLoopResultBuilder]: For program point L489(line 489) no Hoare annotation was computed. [2021-12-22 08:39:10,572 INFO L858 garLoopResultBuilder]: For program point L456(line 456) no Hoare annotation was computed. [2021-12-22 08:39:10,572 INFO L858 garLoopResultBuilder]: For program point L423(line 423) no Hoare annotation was computed. [2021-12-22 08:39:10,572 INFO L858 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-12-22 08:39:10,572 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-22 08:39:10,572 INFO L858 garLoopResultBuilder]: For program point L557-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,573 INFO L858 garLoopResultBuilder]: For program point L524-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,573 INFO L858 garLoopResultBuilder]: For program point L491-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,573 INFO L858 garLoopResultBuilder]: For program point L458-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,573 INFO L858 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-12-22 08:39:10,573 INFO L858 garLoopResultBuilder]: For program point L425-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,573 INFO L858 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-12-22 08:39:10,573 INFO L858 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-12-22 08:39:10,573 INFO L858 garLoopResultBuilder]: For program point L558(line 558) no Hoare annotation was computed. [2021-12-22 08:39:10,573 INFO L858 garLoopResultBuilder]: For program point L525(line 525) no Hoare annotation was computed. [2021-12-22 08:39:10,573 INFO L858 garLoopResultBuilder]: For program point L492(line 492) no Hoare annotation was computed. [2021-12-22 08:39:10,573 INFO L858 garLoopResultBuilder]: For program point L459(line 459) no Hoare annotation was computed. [2021-12-22 08:39:10,573 INFO L858 garLoopResultBuilder]: For program point L426(line 426) no Hoare annotation was computed. [2021-12-22 08:39:10,573 INFO L858 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-12-22 08:39:10,573 INFO L858 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-12-22 08:39:10,573 INFO L858 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-12-22 08:39:10,573 INFO L858 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-12-22 08:39:10,573 INFO L858 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-12-22 08:39:10,573 INFO L858 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-12-22 08:39:10,573 INFO L858 garLoopResultBuilder]: For program point L560-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,574 INFO L854 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse2 (<= ~a16~0 4)) (.cse6 (<= ~a20~0 0)) (.cse7 (<= 14 ~a8~0)) (.cse4 (= ~a21~0 1)) (.cse0 (<= ~a8~0 13)) (.cse5 (<= ~a21~0 0)) (.cse1 (= ~a17~0 1)) (.cse3 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and (<= ~a7~0 0) .cse4 .cse3) (and .cse4 .cse1 .cse3) (and .cse0 (or (and .cse5 .cse3) (and .cse5 .cse1)) .cse2) (and .cse0 (<= 6 ~a16~0) .cse3) (and .cse6 .cse2) (and .cse6 .cse7) (and .cse7 .cse4 .cse3) (and .cse0 .cse5 .cse1 .cse3))) [2021-12-22 08:39:10,574 INFO L858 garLoopResultBuilder]: For program point L527-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,574 INFO L858 garLoopResultBuilder]: For program point L494-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,575 INFO L858 garLoopResultBuilder]: For program point L461-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,575 INFO L858 garLoopResultBuilder]: For program point L428-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,575 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-12-22 08:39:10,575 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-22 08:39:10,575 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 456) no Hoare annotation was computed. [2021-12-22 08:39:10,575 INFO L858 garLoopResultBuilder]: For program point L561(line 561) no Hoare annotation was computed. [2021-12-22 08:39:10,575 INFO L858 garLoopResultBuilder]: For program point L528(line 528) no Hoare annotation was computed. [2021-12-22 08:39:10,575 INFO L858 garLoopResultBuilder]: For program point L495(line 495) no Hoare annotation was computed. [2021-12-22 08:39:10,575 INFO L858 garLoopResultBuilder]: For program point L462(line 462) no Hoare annotation was computed. [2021-12-22 08:39:10,576 INFO L858 garLoopResultBuilder]: For program point L429(line 429) no Hoare annotation was computed. [2021-12-22 08:39:10,576 INFO L858 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-12-22 08:39:10,576 INFO L858 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-12-22 08:39:10,576 INFO L858 garLoopResultBuilder]: For program point L563-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,576 INFO L858 garLoopResultBuilder]: For program point L530-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,576 INFO L858 garLoopResultBuilder]: For program point L497-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,576 INFO L858 garLoopResultBuilder]: For program point L464-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,576 INFO L858 garLoopResultBuilder]: For program point L431-1(lines 40 585) no Hoare annotation was computed. [2021-12-22 08:39:10,576 INFO L858 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-12-22 08:39:10,576 INFO L858 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-12-22 08:39:10,576 INFO L858 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-12-22 08:39:10,576 INFO L858 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-12-22 08:39:10,581 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:39:10,582 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 08:39:10,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 08:39:10 BoogieIcfgContainer [2021-12-22 08:39:10,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 08:39:10,595 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 08:39:10,595 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 08:39:10,596 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 08:39:10,596 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:38:59" (3/4) ... [2021-12-22 08:39:10,598 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-22 08:39:10,610 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-12-22 08:39:10,613 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-22 08:39:10,614 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-22 08:39:10,614 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-22 08:39:10,703 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 08:39:10,703 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 08:39:10,704 INFO L158 Benchmark]: Toolchain (without parser) took 12221.50ms. Allocated memory was 86.0MB in the beginning and 224.4MB in the end (delta: 138.4MB). Free memory was 54.9MB in the beginning and 84.9MB in the end (delta: -30.0MB). Peak memory consumption was 109.5MB. Max. memory is 16.1GB. [2021-12-22 08:39:10,704 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 86.0MB. Free memory is still 43.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 08:39:10,704 INFO L158 Benchmark]: CACSL2BoogieTranslator took 435.87ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 54.7MB in the beginning and 64.3MB in the end (delta: -9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 08:39:10,704 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.45ms. Allocated memory is still 104.9MB. Free memory was 64.3MB in the beginning and 58.7MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-22 08:39:10,704 INFO L158 Benchmark]: Boogie Preprocessor took 70.69ms. Allocated memory is still 104.9MB. Free memory was 58.7MB in the beginning and 54.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-22 08:39:10,705 INFO L158 Benchmark]: RCFGBuilder took 875.91ms. Allocated memory is still 104.9MB. Free memory was 54.2MB in the beginning and 72.1MB in the end (delta: -18.0MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2021-12-22 08:39:10,705 INFO L158 Benchmark]: TraceAbstraction took 10641.87ms. Allocated memory was 104.9MB in the beginning and 224.4MB in the end (delta: 119.5MB). Free memory was 72.1MB in the beginning and 99.5MB in the end (delta: -27.4MB). Peak memory consumption was 132.0MB. Max. memory is 16.1GB. [2021-12-22 08:39:10,705 INFO L158 Benchmark]: Witness Printer took 107.94ms. Allocated memory is still 224.4MB. Free memory was 99.5MB in the beginning and 84.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-22 08:39:10,706 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 86.0MB. Free memory is still 43.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 435.87ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 54.7MB in the beginning and 64.3MB in the end (delta: -9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.45ms. Allocated memory is still 104.9MB. Free memory was 64.3MB in the beginning and 58.7MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.69ms. Allocated memory is still 104.9MB. Free memory was 58.7MB in the beginning and 54.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 875.91ms. Allocated memory is still 104.9MB. Free memory was 54.2MB in the beginning and 72.1MB in the end (delta: -18.0MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. * TraceAbstraction took 10641.87ms. Allocated memory was 104.9MB in the beginning and 224.4MB in the end (delta: 119.5MB). Free memory was 72.1MB in the beginning and 99.5MB in the end (delta: -27.4MB). Peak memory consumption was 132.0MB. Max. memory is 16.1GB. * Witness Printer took 107.94ms. Allocated memory is still 224.4MB. Free memory was 99.5MB in the beginning and 84.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * 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 - PositiveResult [Line: 456]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 198 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.6s, OverallIterations: 15, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1762 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1762 mSDsluCounter, 1394 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 81 mSDsCounter, 806 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5158 IncrementalHoareTripleChecker+Invalid, 5964 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 806 mSolverCounterUnsat, 1313 mSDtfsCounter, 5158 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1276 GetRequests, 1243 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3410occurred in iteration=11, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 15 MinimizatonAttempts, 1965 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 67 NumberOfFragments, 207 HoareAnnotationTreeSize, 3 FomulaSimplifications, 290 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 3 FomulaSimplificationsInter, 4816 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 3595 NumberOfCodeBlocks, 3595 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 3574 ConstructedInterpolants, 0 QuantifiedInterpolants, 8729 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2510 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 21 InterpolantComputations, 15 PerfectInterpolantSequences, 3337/3426 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((((a8 <= 13 && a17 == 1) && a16 <= 4) && a20 == 1) || ((a7 <= 0 && a21 == 1) && a20 == 1)) || ((a21 == 1 && a17 == 1) && a20 == 1)) || ((a8 <= 13 && ((a21 <= 0 && a20 == 1) || (a21 <= 0 && a17 == 1))) && a16 <= 4)) || ((a8 <= 13 && 6 <= a16) && a20 == 1)) || (a20 <= 0 && a16 <= 4)) || (a20 <= 0 && 14 <= a8)) || ((14 <= a8 && a21 == 1) && a20 == 1)) || (((a8 <= 13 && a21 <= 0) && a17 == 1) && a20 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((a8 <= 13 && a17 == 1) && a16 <= 4) && a20 == 1) || ((a7 <= 0 && a21 == 1) && a20 == 1)) || ((a21 == 1 && a17 == 1) && a20 == 1)) || ((a8 <= 13 && ((a21 <= 0 && a20 == 1) || (a21 <= 0 && a17 == 1))) && a16 <= 4)) || ((a8 <= 13 && 6 <= a16) && a20 == 1)) || (a20 <= 0 && a16 <= 4)) || (a20 <= 0 && 14 <= a8)) || ((14 <= a8 && a21 == 1) && a20 == 1)) || (((a8 <= 13 && a21 <= 0) && a17 == 1) && a20 == 1) RESULT: Ultimate proved your program to be correct! [2021-12-22 08:39:10,735 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE