./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/gj2007.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/loop-lit/gj2007.i -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 e210f4af0021f1e0c887bbfa24b18aad98424108efaad4cfc57802fd9fd5ce53 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 02:40:59,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 02:40:59,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 02:40:59,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 02:40:59,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 02:40:59,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 02:40:59,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 02:40:59,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 02:40:59,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 02:40:59,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 02:40:59,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 02:40:59,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 02:40:59,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 02:40:59,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 02:40:59,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 02:40:59,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 02:40:59,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 02:40:59,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 02:40:59,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 02:40:59,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 02:40:59,903 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 02:40:59,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 02:40:59,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 02:40:59,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 02:40:59,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 02:40:59,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 02:40:59,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 02:40:59,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 02:40:59,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 02:40:59,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 02:40:59,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 02:40:59,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 02:40:59,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 02:40:59,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 02:40:59,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 02:40:59,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 02:40:59,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 02:40:59,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 02:40:59,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 02:40:59,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 02:40:59,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 02:40:59,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 02:40:59,930 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 02:40:59,968 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 02:40:59,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 02:40:59,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 02:40:59,969 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 02:40:59,969 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 02:40:59,970 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 02:40:59,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 02:40:59,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 02:40:59,971 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 02:40:59,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 02:40:59,972 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 02:40:59,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 02:40:59,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 02:40:59,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 02:40:59,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 02:40:59,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 02:40:59,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 02:40:59,978 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 02:40:59,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 02:40:59,979 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 02:40:59,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 02:40:59,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 02:40:59,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 02:40:59,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 02:40:59,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:40:59,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 02:40:59,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 02:40:59,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 02:40:59,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 02:40:59,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 02:40:59,981 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 02:40:59,981 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 02:40:59,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 02:40:59,982 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e210f4af0021f1e0c887bbfa24b18aad98424108efaad4cfc57802fd9fd5ce53 [2022-07-21 02:41:00,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 02:41:00,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 02:41:00,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 02:41:00,288 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 02:41:00,295 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 02:41:00,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gj2007.i [2022-07-21 02:41:00,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31ac46e03/8b803145b8b8457e89730536bfb85ce3/FLAGcce3a1f51 [2022-07-21 02:41:00,791 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 02:41:00,792 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gj2007.i [2022-07-21 02:41:00,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31ac46e03/8b803145b8b8457e89730536bfb85ce3/FLAGcce3a1f51 [2022-07-21 02:41:00,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31ac46e03/8b803145b8b8457e89730536bfb85ce3 [2022-07-21 02:41:00,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 02:41:00,815 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 02:41:00,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 02:41:00,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 02:41:00,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 02:41:00,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:41:00" (1/1) ... [2022-07-21 02:41:00,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b3abb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:41:00, skipping insertion in model container [2022-07-21 02:41:00,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:41:00" (1/1) ... [2022-07-21 02:41:00,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 02:41:00,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 02:41:00,941 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/loop-lit/gj2007.i[895,908] [2022-07-21 02:41:00,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:41:00,962 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 02:41:00,980 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/loop-lit/gj2007.i[895,908] [2022-07-21 02:41:00,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:41:01,020 INFO L208 MainTranslator]: Completed translation [2022-07-21 02:41:01,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:41:01 WrapperNode [2022-07-21 02:41:01,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 02:41:01,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 02:41:01,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 02:41:01,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 02:41:01,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:41:01" (1/1) ... [2022-07-21 02:41:01,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:41:01" (1/1) ... [2022-07-21 02:41:01,047 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2022-07-21 02:41:01,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 02:41:01,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 02:41:01,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 02:41:01,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 02:41:01,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:41:01" (1/1) ... [2022-07-21 02:41:01,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:41:01" (1/1) ... [2022-07-21 02:41:01,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:41:01" (1/1) ... [2022-07-21 02:41:01,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:41:01" (1/1) ... [2022-07-21 02:41:01,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:41:01" (1/1) ... [2022-07-21 02:41:01,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:41:01" (1/1) ... [2022-07-21 02:41:01,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:41:01" (1/1) ... [2022-07-21 02:41:01,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 02:41:01,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 02:41:01,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 02:41:01,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 02:41:01,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:41:01" (1/1) ... [2022-07-21 02:41:01,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:41:01,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:41:01,104 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 02:41:01,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 02:41:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 02:41:01,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 02:41:01,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 02:41:01,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 02:41:01,203 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 02:41:01,204 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 02:41:01,314 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 02:41:01,320 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 02:41:01,320 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 02:41:01,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:41:01 BoogieIcfgContainer [2022-07-21 02:41:01,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 02:41:01,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 02:41:01,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 02:41:01,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 02:41:01,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:41:00" (1/3) ... [2022-07-21 02:41:01,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d101ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:41:01, skipping insertion in model container [2022-07-21 02:41:01,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:41:01" (2/3) ... [2022-07-21 02:41:01,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d101ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:41:01, skipping insertion in model container [2022-07-21 02:41:01,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:41:01" (3/3) ... [2022-07-21 02:41:01,330 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007.i [2022-07-21 02:41:01,342 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 02:41:01,342 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 02:41:01,411 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 02:41:01,419 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@42aa4710, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@13f30932 [2022-07-21 02:41:01,419 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 02:41:01,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:01,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 02:41:01,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:41:01,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 02:41:01,442 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:41:01,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:41:01,447 INFO L85 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2022-07-21 02:41:01,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:41:01,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192629326] [2022-07-21 02:41:01,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:41:01,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:41:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:41:01,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:41:01,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:41:01,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192629326] [2022-07-21 02:41:01,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192629326] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:41:01,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:41:01,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 02:41:01,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017319980] [2022-07-21 02:41:01,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:41:01,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 02:41:01,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:41:01,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 02:41:01,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 02:41:01,605 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:01,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:41:01,617 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2022-07-21 02:41:01,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 02:41:01,619 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-07-21 02:41:01,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:41:01,626 INFO L225 Difference]: With dead ends: 20 [2022-07-21 02:41:01,627 INFO L226 Difference]: Without dead ends: 8 [2022-07-21 02:41:01,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 02:41:01,634 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:41:01,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:41:01,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-07-21 02:41:01,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-07-21 02:41:01,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:01,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2022-07-21 02:41:01,661 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2022-07-21 02:41:01,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:41:01,661 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2022-07-21 02:41:01,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:01,662 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2022-07-21 02:41:01,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 02:41:01,663 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:41:01,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 02:41:01,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 02:41:01,664 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:41:01,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:41:01,665 INFO L85 PathProgramCache]: Analyzing trace with hash 889639793, now seen corresponding path program 1 times [2022-07-21 02:41:01,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:41:01,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503374021] [2022-07-21 02:41:01,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:41:01,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:41:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:41:01,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:41:01,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:41:01,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503374021] [2022-07-21 02:41:01,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503374021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:41:01,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:41:01,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 02:41:01,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480791054] [2022-07-21 02:41:01,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:41:01,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 02:41:01,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:41:01,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 02:41:01,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 02:41:01,722 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:01,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:41:01,755 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2022-07-21 02:41:01,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 02:41:01,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-07-21 02:41:01,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:41:01,775 INFO L225 Difference]: With dead ends: 16 [2022-07-21 02:41:01,776 INFO L226 Difference]: Without dead ends: 10 [2022-07-21 02:41:01,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 02:41:01,777 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:41:01,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:41:01,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-07-21 02:41:01,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-21 02:41:01,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:01,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2022-07-21 02:41:01,781 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2022-07-21 02:41:01,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:41:01,781 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2022-07-21 02:41:01,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:01,782 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-07-21 02:41:01,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-21 02:41:01,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:41:01,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:41:01,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 02:41:01,783 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:41:01,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:41:01,783 INFO L85 PathProgramCache]: Analyzing trace with hash 295691924, now seen corresponding path program 1 times [2022-07-21 02:41:01,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:41:01,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919547188] [2022-07-21 02:41:01,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:41:01,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:41:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:41:01,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:41:01,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:41:01,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919547188] [2022-07-21 02:41:01,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919547188] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:41:01,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679235348] [2022-07-21 02:41:01,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:41:01,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:41:01,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:41:01,848 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 02:41:01,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 02:41:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:41:01,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 02:41:01,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:41:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:41:01,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:41:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:41:01,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679235348] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:41:01,972 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:41:01,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-21 02:41:01,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55710687] [2022-07-21 02:41:01,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:41:01,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 02:41:01,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:41:01,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 02:41:01,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-21 02:41:01,974 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:02,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:41:02,011 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2022-07-21 02:41:02,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 02:41:02,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 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 8 [2022-07-21 02:41:02,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:41:02,012 INFO L225 Difference]: With dead ends: 21 [2022-07-21 02:41:02,012 INFO L226 Difference]: Without dead ends: 15 [2022-07-21 02:41:02,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-21 02:41:02,014 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:41:02,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:41:02,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-21 02:41:02,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-07-21 02:41:02,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:02,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-07-21 02:41:02,018 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2022-07-21 02:41:02,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:41:02,018 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-07-21 02:41:02,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:02,018 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-07-21 02:41:02,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-21 02:41:02,019 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:41:02,019 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-21 02:41:02,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 02:41:02,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:41:02,224 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:41:02,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:41:02,225 INFO L85 PathProgramCache]: Analyzing trace with hash 598153473, now seen corresponding path program 1 times [2022-07-21 02:41:02,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:41:02,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568737810] [2022-07-21 02:41:02,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:41:02,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:41:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:41:02,279 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 02:41:02,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:41:02,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568737810] [2022-07-21 02:41:02,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568737810] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:41:02,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505181691] [2022-07-21 02:41:02,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:41:02,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:41:02,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:41:02,284 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 02:41:02,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 02:41:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:41:02,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 02:41:02,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:41:02,337 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 02:41:02,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:41:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 02:41:02,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505181691] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:41:02,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:41:02,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-07-21 02:41:02,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249327268] [2022-07-21 02:41:02,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:41:02,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 02:41:02,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:41:02,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 02:41:02,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-07-21 02:41:02,393 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:02,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:41:02,437 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2022-07-21 02:41:02,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 02:41:02,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 14 [2022-07-21 02:41:02,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:41:02,438 INFO L225 Difference]: With dead ends: 32 [2022-07-21 02:41:02,438 INFO L226 Difference]: Without dead ends: 23 [2022-07-21 02:41:02,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-07-21 02:41:02,440 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:41:02,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:41:02,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-21 02:41:02,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-21 02:41:02,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:02,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-07-21 02:41:02,462 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2022-07-21 02:41:02,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:41:02,462 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-07-21 02:41:02,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:02,462 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-07-21 02:41:02,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-21 02:41:02,463 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:41:02,463 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1, 1] [2022-07-21 02:41:02,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 02:41:02,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-21 02:41:02,664 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:41:02,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:41:02,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1175196403, now seen corresponding path program 2 times [2022-07-21 02:41:02,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:41:02,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909775512] [2022-07-21 02:41:02,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:41:02,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:41:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:41:02,800 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 02:41:02,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:41:02,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909775512] [2022-07-21 02:41:02,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909775512] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:41:02,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382742116] [2022-07-21 02:41:02,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 02:41:02,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:41:02,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:41:02,804 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 02:41:02,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 02:41:02,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 02:41:02,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 02:41:02,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 02:41:02,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:41:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 02:41:02,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:41:02,999 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 02:41:02,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382742116] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:41:02,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:41:02,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-07-21 02:41:03,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574366182] [2022-07-21 02:41:03,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:41:03,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 02:41:03,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:41:03,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 02:41:03,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-07-21 02:41:03,002 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:03,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:41:03,048 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2022-07-21 02:41:03,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 02:41:03,049 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 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 22 [2022-07-21 02:41:03,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:41:03,049 INFO L225 Difference]: With dead ends: 48 [2022-07-21 02:41:03,049 INFO L226 Difference]: Without dead ends: 39 [2022-07-21 02:41:03,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-07-21 02:41:03,051 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:41:03,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:41:03,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-07-21 02:41:03,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-07-21 02:41:03,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:03,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2022-07-21 02:41:03,058 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 22 [2022-07-21 02:41:03,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:41:03,058 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2022-07-21 02:41:03,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:03,059 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2022-07-21 02:41:03,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-21 02:41:03,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:41:03,060 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 2, 1, 1, 1, 1, 1, 1] [2022-07-21 02:41:03,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 02:41:03,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:41:03,272 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:41:03,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:41:03,272 INFO L85 PathProgramCache]: Analyzing trace with hash -713215707, now seen corresponding path program 3 times [2022-07-21 02:41:03,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:41:03,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011912110] [2022-07-21 02:41:03,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:41:03,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:41:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:41:03,496 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 45 proven. 210 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 02:41:03,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:41:03,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011912110] [2022-07-21 02:41:03,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011912110] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:41:03,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487004016] [2022-07-21 02:41:03,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 02:41:03,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:41:03,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:41:03,504 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) [2022-07-21 02:41:03,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 02:41:03,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-21 02:41:03,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 02:41:03,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 02:41:03,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:41:03,624 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-07-21 02:41:03,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:41:03,699 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-07-21 02:41:03,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487004016] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:41:03,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:41:03,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 23 [2022-07-21 02:41:03,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117328957] [2022-07-21 02:41:03,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:41:03,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 02:41:03,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:41:03,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 02:41:03,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-07-21 02:41:03,704 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:03,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:41:03,815 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2022-07-21 02:41:03,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 02:41:03,817 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 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 38 [2022-07-21 02:41:03,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:41:03,819 INFO L225 Difference]: With dead ends: 58 [2022-07-21 02:41:03,819 INFO L226 Difference]: Without dead ends: 49 [2022-07-21 02:41:03,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-07-21 02:41:03,823 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 39 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 02:41:03,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 26 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 02:41:03,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-07-21 02:41:03,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-07-21 02:41:03,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 48 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:03,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2022-07-21 02:41:03,843 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 38 [2022-07-21 02:41:03,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:41:03,843 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2022-07-21 02:41:03,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:03,844 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2022-07-21 02:41:03,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-21 02:41:03,847 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:41:03,847 INFO L195 NwaCegarLoop]: trace histogram [21, 15, 6, 1, 1, 1, 1, 1, 1] [2022-07-21 02:41:03,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 02:41:04,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:41:04,063 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:41:04,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:41:04,064 INFO L85 PathProgramCache]: Analyzing trace with hash 160479836, now seen corresponding path program 4 times [2022-07-21 02:41:04,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:41:04,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969544102] [2022-07-21 02:41:04,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:41:04,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:41:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:41:04,330 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 176 proven. 240 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 02:41:04,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:41:04,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969544102] [2022-07-21 02:41:04,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969544102] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:41:04,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816140924] [2022-07-21 02:41:04,331 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-21 02:41:04,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:41:04,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:41:04,333 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) [2022-07-21 02:41:04,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 02:41:04,376 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-21 02:41:04,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 02:41:04,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-21 02:41:04,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:41:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 176 proven. 240 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 02:41:04,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:41:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 176 proven. 240 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 02:41:04,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816140924] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:41:04,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:41:04,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2022-07-21 02:41:04,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730700869] [2022-07-21 02:41:04,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:41:04,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-21 02:41:04,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:41:04,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-21 02:41:04,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2022-07-21 02:41:04,826 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 35 states, 35 states have (on average 2.1714285714285713) internal successors, (76), 35 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:04,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:41:04,918 INFO L93 Difference]: Finished difference Result 100 states and 129 transitions. [2022-07-21 02:41:04,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-21 02:41:04,919 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.1714285714285713) internal successors, (76), 35 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-07-21 02:41:04,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:41:04,922 INFO L225 Difference]: With dead ends: 100 [2022-07-21 02:41:04,922 INFO L226 Difference]: Without dead ends: 83 [2022-07-21 02:41:04,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2022-07-21 02:41:04,924 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 02:41:04,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 02:41:04,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-07-21 02:41:04,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-07-21 02:41:04,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.0853658536585367) internal successors, (89), 82 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:04,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2022-07-21 02:41:04,937 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 48 [2022-07-21 02:41:04,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:41:04,937 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2022-07-21 02:41:04,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.1714285714285713) internal successors, (76), 35 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:04,937 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2022-07-21 02:41:04,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-21 02:41:04,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:41:04,938 INFO L195 NwaCegarLoop]: trace histogram [38, 32, 6, 1, 1, 1, 1, 1, 1] [2022-07-21 02:41:04,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 02:41:05,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:41:05,152 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:41:05,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:41:05,152 INFO L85 PathProgramCache]: Analyzing trace with hash 722625007, now seen corresponding path program 5 times [2022-07-21 02:41:05,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:41:05,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993097288] [2022-07-21 02:41:05,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:41:05,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:41:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:41:05,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 363 proven. 1056 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 02:41:05,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:41:05,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993097288] [2022-07-21 02:41:05,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993097288] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:41:05,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690236393] [2022-07-21 02:41:05,727 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-21 02:41:05,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:41:05,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:41:05,732 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) [2022-07-21 02:41:05,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 02:41:05,789 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 39 check-sat command(s) [2022-07-21 02:41:05,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 02:41:05,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-21 02:41:05,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:41:05,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 363 proven. 1056 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 02:41:05,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:41:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 363 proven. 1056 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 02:41:06,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690236393] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:41:06,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:41:06,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 53 [2022-07-21 02:41:06,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832996921] [2022-07-21 02:41:06,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:41:06,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-07-21 02:41:06,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:41:06,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-07-21 02:41:06,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2022-07-21 02:41:06,586 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:06,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:41:06,711 INFO L93 Difference]: Finished difference Result 136 states and 166 transitions. [2022-07-21 02:41:06,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-21 02:41:06,712 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-07-21 02:41:06,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:41:06,713 INFO L225 Difference]: With dead ends: 136 [2022-07-21 02:41:06,713 INFO L226 Difference]: Without dead ends: 119 [2022-07-21 02:41:06,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2022-07-21 02:41:06,715 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 02:41:06,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 02:41:06,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-07-21 02:41:06,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-07-21 02:41:06,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0593220338983051) internal successors, (125), 118 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:06,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 125 transitions. [2022-07-21 02:41:06,725 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 125 transitions. Word has length 82 [2022-07-21 02:41:06,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:41:06,725 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 125 transitions. [2022-07-21 02:41:06,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:06,726 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 125 transitions. [2022-07-21 02:41:06,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-21 02:41:06,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:41:06,727 INFO L195 NwaCegarLoop]: trace histogram [56, 50, 6, 1, 1, 1, 1, 1, 1] [2022-07-21 02:41:06,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 02:41:06,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:41:06,944 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:41:06,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:41:06,944 INFO L85 PathProgramCache]: Analyzing trace with hash 186833573, now seen corresponding path program 6 times [2022-07-21 02:41:06,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:41:06,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649099586] [2022-07-21 02:41:06,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:41:06,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:41:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:41:08,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:41:08,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:41:08,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649099586] [2022-07-21 02:41:08,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649099586] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:41:08,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130266686] [2022-07-21 02:41:08,304 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-21 02:41:08,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:41:08,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:41:08,306 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 02:41:08,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 02:41:08,381 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2022-07-21 02:41:08,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 02:41:08,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 02:41:08,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:41:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 650 proven. 36 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2022-07-21 02:41:08,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:41:08,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 650 proven. 36 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2022-07-21 02:41:08,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130266686] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:41:08,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:41:08,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 9, 9] total 66 [2022-07-21 02:41:08,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137751279] [2022-07-21 02:41:08,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:41:08,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-07-21 02:41:08,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:41:08,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-07-21 02:41:08,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2022-07-21 02:41:08,806 INFO L87 Difference]: Start difference. First operand 119 states and 125 transitions. Second operand has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 66 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:09,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:41:09,117 INFO L93 Difference]: Finished difference Result 139 states and 160 transitions. [2022-07-21 02:41:09,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-07-21 02:41:09,118 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 66 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2022-07-21 02:41:09,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:41:09,119 INFO L225 Difference]: With dead ends: 139 [2022-07-21 02:41:09,119 INFO L226 Difference]: Without dead ends: 135 [2022-07-21 02:41:09,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2022-07-21 02:41:09,121 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 121 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 02:41:09,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 18 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 02:41:09,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-07-21 02:41:09,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2022-07-21 02:41:09,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.1119402985074627) internal successors, (149), 134 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:09,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 149 transitions. [2022-07-21 02:41:09,132 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 149 transitions. Word has length 118 [2022-07-21 02:41:09,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:41:09,132 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 149 transitions. [2022-07-21 02:41:09,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 66 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:09,133 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 149 transitions. [2022-07-21 02:41:09,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 02:41:09,134 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:41:09,134 INFO L195 NwaCegarLoop]: trace histogram [64, 50, 14, 1, 1, 1, 1, 1, 1] [2022-07-21 02:41:09,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-21 02:41:09,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:41:09,344 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:41:09,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:41:09,344 INFO L85 PathProgramCache]: Analyzing trace with hash -10833715, now seen corresponding path program 7 times [2022-07-21 02:41:09,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:41:09,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657921766] [2022-07-21 02:41:09,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:41:09,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:41:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:41:10,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:41:10,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:41:10,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657921766] [2022-07-21 02:41:10,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657921766] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:41:10,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799030538] [2022-07-21 02:41:10,897 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-21 02:41:10,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:41:10,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:41:10,898 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 02:41:10,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 02:41:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:41:10,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-21 02:41:10,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:41:11,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:41:11,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:41:13,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:41:13,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799030538] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:41:13,304 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:41:13,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 103 [2022-07-21 02:41:13,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181685971] [2022-07-21 02:41:13,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:41:13,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-07-21 02:41:13,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:41:13,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-07-21 02:41:13,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2022-07-21 02:41:13,310 INFO L87 Difference]: Start difference. First operand 135 states and 149 transitions. Second operand has 103 states, 103 states have (on average 2.1650485436893203) internal successors, (223), 103 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:13,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:41:13,938 INFO L93 Difference]: Finished difference Result 211 states and 296 transitions. [2022-07-21 02:41:13,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-07-21 02:41:13,938 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.1650485436893203) internal successors, (223), 103 states have internal predecessors, (223), 0 states have call successors, (0), 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 134 [2022-07-21 02:41:13,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:41:13,939 INFO L225 Difference]: With dead ends: 211 [2022-07-21 02:41:13,939 INFO L226 Difference]: Without dead ends: 207 [2022-07-21 02:41:13,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2022-07-21 02:41:13,942 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 100 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 02:41:13,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 26 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 02:41:13,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-07-21 02:41:13,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2022-07-21 02:41:13,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.2475728155339805) internal successors, (257), 206 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:13,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 257 transitions. [2022-07-21 02:41:13,953 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 257 transitions. Word has length 134 [2022-07-21 02:41:13,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:41:13,954 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 257 transitions. [2022-07-21 02:41:13,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.1650485436893203) internal successors, (223), 103 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:13,954 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 257 transitions. [2022-07-21 02:41:13,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-21 02:41:13,956 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:41:13,957 INFO L195 NwaCegarLoop]: trace histogram [100, 50, 50, 1, 1, 1, 1, 1, 1] [2022-07-21 02:41:13,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 02:41:14,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 02:41:14,172 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:41:14,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:41:14,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1394062977, now seen corresponding path program 8 times [2022-07-21 02:41:14,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:41:14,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277536056] [2022-07-21 02:41:14,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:41:14,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:41:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:41:15,626 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2022-07-21 02:41:15,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:41:15,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277536056] [2022-07-21 02:41:15,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277536056] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:41:15,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373367751] [2022-07-21 02:41:15,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 02:41:15,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:41:15,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:41:15,629 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 02:41:15,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 02:41:15,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 02:41:15,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 02:41:15,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 105 conjunts are in the unsatisfiable core [2022-07-21 02:41:15,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:41:16,387 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2022-07-21 02:41:16,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:41:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2022-07-21 02:41:17,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373367751] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:41:17,055 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 02:41:17,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 55 [2022-07-21 02:41:17,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185042574] [2022-07-21 02:41:17,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 02:41:17,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-07-21 02:41:17,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:41:17,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-07-21 02:41:17,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2022-07-21 02:41:17,059 INFO L87 Difference]: Start difference. First operand 207 states and 257 transitions. Second operand has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:18,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:41:18,219 INFO L93 Difference]: Finished difference Result 2862 states and 4237 transitions. [2022-07-21 02:41:18,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-21 02:41:18,220 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 0 states have call successors, (0), 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 206 [2022-07-21 02:41:18,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:41:18,231 INFO L225 Difference]: With dead ends: 2862 [2022-07-21 02:41:18,232 INFO L226 Difference]: Without dead ends: 2858 [2022-07-21 02:41:18,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 406 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=113, Invalid=2967, Unknown=0, NotChecked=0, Total=3080 [2022-07-21 02:41:18,234 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 52 mSDsluCounter, 5516 mSDsCounter, 0 mSdLazyCounter, 2810 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 5623 SdHoareTripleChecker+Invalid, 2810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:41:18,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 5623 Invalid, 2810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2810 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 02:41:18,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2022-07-21 02:41:18,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 209. [2022-07-21 02:41:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.25) internal successors, (260), 208 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:18,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 260 transitions. [2022-07-21 02:41:18,308 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 260 transitions. Word has length 206 [2022-07-21 02:41:18,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:41:18,309 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 260 transitions. [2022-07-21 02:41:18,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:18,310 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 260 transitions. [2022-07-21 02:41:18,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-21 02:41:18,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:41:18,316 INFO L195 NwaCegarLoop]: trace histogram [101, 51, 50, 1, 1, 1, 1, 1, 1] [2022-07-21 02:41:18,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 02:41:18,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:41:18,543 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:41:18,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:41:18,544 INFO L85 PathProgramCache]: Analyzing trace with hash -283085658, now seen corresponding path program 9 times [2022-07-21 02:41:18,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:41:18,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159412273] [2022-07-21 02:41:18,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:41:18,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:41:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:41:19,656 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 7651 proven. 0 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2022-07-21 02:41:19,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:41:19,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159412273] [2022-07-21 02:41:19,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159412273] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:41:19,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:41:19,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-07-21 02:41:19,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240322596] [2022-07-21 02:41:19,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:41:19,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-21 02:41:19,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:41:19,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-21 02:41:19,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2022-07-21 02:41:19,661 INFO L87 Difference]: Start difference. First operand 209 states and 260 transitions. Second operand has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 52 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:19,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:41:19,894 INFO L93 Difference]: Finished difference Result 308 states and 408 transitions. [2022-07-21 02:41:19,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-21 02:41:19,894 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 52 states have internal predecessors, (109), 0 states have call successors, (0), 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 208 [2022-07-21 02:41:19,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:41:19,895 INFO L225 Difference]: With dead ends: 308 [2022-07-21 02:41:19,895 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 02:41:19,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2022-07-21 02:41:19,900 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 02:41:19,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 02:41:19,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 02:41:19,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 02:41:19,901 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) [2022-07-21 02:41:19,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 02:41:19,902 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 208 [2022-07-21 02:41:19,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:41:19,902 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 02:41:19,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 52 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 02:41:19,902 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 02:41:19,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 02:41:19,905 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 02:41:19,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 02:41:19,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-21 02:41:22,378 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-21 02:41:22,378 INFO L899 garLoopResultBuilder]: For program point L27-2(lines 27 34) no Hoare annotation was computed. [2022-07-21 02:41:22,378 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-07-21 02:41:22,378 INFO L902 garLoopResultBuilder]: At program point L36(lines 24 37) the Hoare annotation is: true [2022-07-21 02:41:22,378 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-21 02:41:22,378 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-21 02:41:22,378 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-21 02:41:22,378 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 33) no Hoare annotation was computed. [2022-07-21 02:41:22,379 INFO L895 garLoopResultBuilder]: At program point L28-2(lines 27 34) the Hoare annotation is: (or (and (<= |ULTIMATE.start_main_~x~0#1| 56) (<= |ULTIMATE.start_main_~y~0#1| 56) (<= 56 |ULTIMATE.start_main_~x~0#1|) (<= 56 |ULTIMATE.start_main_~y~0#1|)) (and (<= 71 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 71) (<= 71 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| 72)) (and (<= 99 |ULTIMATE.start_main_~x~0#1|) (<= 99 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 99) (< |ULTIMATE.start_main_~x~0#1| 100)) (and (<= 57 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 57) (<= 57 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 57)) (and (<= |ULTIMATE.start_main_~x~0#1| 64) (<= 64 |ULTIMATE.start_main_~x~0#1|) (<= 64 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 64)) (and (<= |ULTIMATE.start_main_~x~0#1| 63) (<= 63 |ULTIMATE.start_main_~y~0#1|) (<= 63 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 63)) (and (<= |ULTIMATE.start_main_~y~0#1| 76) (< |ULTIMATE.start_main_~x~0#1| 77) (<= 76 |ULTIMATE.start_main_~x~0#1|) (<= 76 |ULTIMATE.start_main_~y~0#1|)) (and (<= |ULTIMATE.start_main_~y~0#1| 68) (< |ULTIMATE.start_main_~x~0#1| 69) (<= 68 |ULTIMATE.start_main_~x~0#1|) (<= 68 |ULTIMATE.start_main_~y~0#1|)) (and (< |ULTIMATE.start_main_~x~0#1| 89) (<= |ULTIMATE.start_main_~y~0#1| 88) (<= 88 |ULTIMATE.start_main_~x~0#1|) (<= 88 |ULTIMATE.start_main_~y~0#1|)) (and (<= |ULTIMATE.start_main_~y~0#1| 77) (<= 77 |ULTIMATE.start_main_~y~0#1|) (< |ULTIMATE.start_main_~x~0#1| 78) (<= 77 |ULTIMATE.start_main_~x~0#1|)) (and (<= 95 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| 96) (<= 95 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 95)) (and (< |ULTIMATE.start_main_~x~0#1| 71) (<= 70 |ULTIMATE.start_main_~y~0#1|) (<= 70 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 70)) (and (<= |ULTIMATE.start_main_~y~0#1| 73) (<= 73 |ULTIMATE.start_main_~y~0#1|) (< |ULTIMATE.start_main_~x~0#1| 74) (<= 73 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~y~0#1| 96) (<= 96 |ULTIMATE.start_main_~y~0#1|) (< |ULTIMATE.start_main_~x~0#1| 97) (<= 96 |ULTIMATE.start_main_~x~0#1|)) (and (<= 80 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 80) (< |ULTIMATE.start_main_~x~0#1| 81) (<= 80 |ULTIMATE.start_main_~y~0#1|)) (and (<= 91 |ULTIMATE.start_main_~y~0#1|) (<= 91 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| 92) (<= |ULTIMATE.start_main_~y~0#1| 91)) (and (<= |ULTIMATE.start_main_~x~0#1| 61) (<= 61 |ULTIMATE.start_main_~x~0#1|) (<= 61 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 61)) (and (<= 55 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 55) (<= |ULTIMATE.start_main_~x~0#1| 55) (<= 55 |ULTIMATE.start_main_~x~0#1|)) (and (< |ULTIMATE.start_main_~x~0#1| 94) (<= 93 |ULTIMATE.start_main_~x~0#1|) (<= 93 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 93)) (and (<= |ULTIMATE.start_main_~y~0#1| 59) (<= 59 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 59) (<= 59 |ULTIMATE.start_main_~x~0#1|)) (and (<= 81 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 81) (< |ULTIMATE.start_main_~x~0#1| 82) (<= 81 |ULTIMATE.start_main_~x~0#1|)) (and (< |ULTIMATE.start_main_~x~0#1| 76) (<= 75 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 75) (<= 75 |ULTIMATE.start_main_~x~0#1|)) (and (< |ULTIMATE.start_main_~x~0#1| 68) (<= 67 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 67) (<= 67 |ULTIMATE.start_main_~y~0#1|)) (and (<= |ULTIMATE.start_main_~y~0#1| 74) (<= 74 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| 75) (<= 74 |ULTIMATE.start_main_~y~0#1|)) (and (<= 82 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 82) (< |ULTIMATE.start_main_~x~0#1| 83) (<= 82 |ULTIMATE.start_main_~y~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 62) (<= 62 |ULTIMATE.start_main_~y~0#1|) (<= 62 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 62)) (and (<= |ULTIMATE.start_main_~y~0#1| 89) (<= 89 |ULTIMATE.start_main_~y~0#1|) (< |ULTIMATE.start_main_~x~0#1| 90) (<= 89 |ULTIMATE.start_main_~x~0#1|)) (and (<= 100 |ULTIMATE.start_main_~x~0#1|) (< 99 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 100)) (and (<= 58 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 58) (<= 58 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 58)) (and (<= 54 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 54) (<= 54 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 54)) (and (< |ULTIMATE.start_main_~x~0#1| 91) (<= 90 |ULTIMATE.start_main_~y~0#1|) (<= 90 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 90)) (and (< |ULTIMATE.start_main_~x~0#1| 87) (<= |ULTIMATE.start_main_~y~0#1| 86) (<= 86 |ULTIMATE.start_main_~x~0#1|) (<= 86 |ULTIMATE.start_main_~y~0#1|)) (and (<= 83 |ULTIMATE.start_main_~x~0#1|) (<= 83 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 83) (< |ULTIMATE.start_main_~x~0#1| 84)) (and (<= 92 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| 93) (<= |ULTIMATE.start_main_~y~0#1| 92) (<= 92 |ULTIMATE.start_main_~y~0#1|)) (and (<= 87 |ULTIMATE.start_main_~y~0#1|) (<= 87 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 87) (< |ULTIMATE.start_main_~x~0#1| 88)) (and (< |ULTIMATE.start_main_~x~0#1| 79) (<= 78 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 78) (<= 78 |ULTIMATE.start_main_~y~0#1|)) (and (< |ULTIMATE.start_main_~x~0#1| 73) (<= 72 |ULTIMATE.start_main_~x~0#1|) (<= 72 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 72)) (and (<= |ULTIMATE.start_main_~y~0#1| 53) (<= |ULTIMATE.start_main_~x~0#1| 53) (<= 53 |ULTIMATE.start_main_~y~0#1|) (<= 53 |ULTIMATE.start_main_~x~0#1|)) (and (<= 98 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 98) (<= 98 |ULTIMATE.start_main_~y~0#1|) (< |ULTIMATE.start_main_~x~0#1| 99)) (and (<= |ULTIMATE.start_main_~y~0#1| 52) (<= 52 |ULTIMATE.start_main_~x~0#1|) (<= 52 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 52)) (and (<= 94 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 94) (<= 94 |ULTIMATE.start_main_~y~0#1|) (< |ULTIMATE.start_main_~x~0#1| 95)) (and (<= |ULTIMATE.start_main_~x~0#1| 60) (<= 60 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 60) (<= 60 |ULTIMATE.start_main_~y~0#1|)) (and (<= 51 |ULTIMATE.start_main_~y~0#1|) (<= 51 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 51) (<= |ULTIMATE.start_main_~y~0#1| 51)) (and (<= 69 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| 70) (<= 69 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 69)) (and (< |ULTIMATE.start_main_~x~0#1| 80) (<= |ULTIMATE.start_main_~y~0#1| 79) (<= 79 |ULTIMATE.start_main_~y~0#1|) (<= 79 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~y~0#1| 85) (<= 85 |ULTIMATE.start_main_~x~0#1|) (<= 85 |ULTIMATE.start_main_~y~0#1|) (< |ULTIMATE.start_main_~x~0#1| 86)) (and (<= 66 |ULTIMATE.start_main_~y~0#1|) (< |ULTIMATE.start_main_~x~0#1| 67) (<= |ULTIMATE.start_main_~y~0#1| 66) (<= 66 |ULTIMATE.start_main_~x~0#1|)) (and (<= 84 |ULTIMATE.start_main_~y~0#1|) (< |ULTIMATE.start_main_~x~0#1| 85) (<= |ULTIMATE.start_main_~y~0#1| 84) (<= 84 |ULTIMATE.start_main_~x~0#1|)) (and (<= 97 |ULTIMATE.start_main_~y~0#1|) (<= 97 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| 98) (<= |ULTIMATE.start_main_~y~0#1| 97)) (and (<= |ULTIMATE.start_main_~y~0#1| 65) (<= 65 |ULTIMATE.start_main_~x~0#1|) (<= 65 |ULTIMATE.start_main_~y~0#1|) (< |ULTIMATE.start_main_~x~0#1| 66)) (and (<= |ULTIMATE.start_main_~x~0#1| 50) (<= |ULTIMATE.start_main_~y~0#1| 50) (<= 50 |ULTIMATE.start_main_~y~0#1|))) [2022-07-21 02:41:22,379 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-07-21 02:41:22,379 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2022-07-21 02:41:22,380 INFO L902 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2022-07-21 02:41:22,382 INFO L356 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1] [2022-07-21 02:41:22,384 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 02:41:22,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:41:22 BoogieIcfgContainer [2022-07-21 02:41:22,422 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 02:41:22,423 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 02:41:22,423 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 02:41:22,423 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 02:41:22,424 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:41:01" (3/4) ... [2022-07-21 02:41:22,426 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 02:41:22,433 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-07-21 02:41:22,433 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-21 02:41:22,433 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 02:41:22,433 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 02:41:22,458 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 02:41:22,458 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 02:41:22,458 INFO L158 Benchmark]: Toolchain (without parser) took 21643.74ms. Allocated memory was 56.6MB in the beginning and 176.2MB in the end (delta: 119.5MB). Free memory was 35.5MB in the beginning and 152.1MB in the end (delta: -116.6MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2022-07-21 02:41:22,459 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 56.6MB. Free memory was 38.6MB in the beginning and 38.5MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:41:22,459 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.12ms. Allocated memory is still 56.6MB. Free memory was 35.2MB in the beginning and 39.8MB in the end (delta: -4.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-21 02:41:22,459 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.83ms. Allocated memory is still 56.6MB. Free memory was 39.8MB in the beginning and 38.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:41:22,460 INFO L158 Benchmark]: Boogie Preprocessor took 22.73ms. Allocated memory is still 56.6MB. Free memory was 38.3MB in the beginning and 37.4MB in the end (delta: 900.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:41:22,460 INFO L158 Benchmark]: RCFGBuilder took 249.96ms. Allocated memory is still 56.6MB. Free memory was 37.4MB in the beginning and 29.4MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 02:41:22,460 INFO L158 Benchmark]: TraceAbstraction took 21098.49ms. Allocated memory was 56.6MB in the beginning and 176.2MB in the end (delta: 119.5MB). Free memory was 28.8MB in the beginning and 154.2MB in the end (delta: -125.4MB). Peak memory consumption was 101.2MB. Max. memory is 16.1GB. [2022-07-21 02:41:22,461 INFO L158 Benchmark]: Witness Printer took 34.98ms. Allocated memory is still 176.2MB. Free memory was 154.2MB in the beginning and 152.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 02:41:22,462 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 56.6MB. Free memory was 38.6MB in the beginning and 38.5MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 205.12ms. Allocated memory is still 56.6MB. Free memory was 35.2MB in the beginning and 39.8MB in the end (delta: -4.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.83ms. Allocated memory is still 56.6MB. Free memory was 39.8MB in the beginning and 38.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.73ms. Allocated memory is still 56.6MB. Free memory was 38.3MB in the beginning and 37.4MB in the end (delta: 900.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 249.96ms. Allocated memory is still 56.6MB. Free memory was 37.4MB in the beginning and 29.4MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 21098.49ms. Allocated memory was 56.6MB in the beginning and 176.2MB in the end (delta: 119.5MB). Free memory was 28.8MB in the beginning and 154.2MB in the end (delta: -125.4MB). Peak memory consumption was 101.2MB. Max. memory is 16.1GB. * Witness Printer took 34.98ms. Allocated memory is still 176.2MB. Free memory was 154.2MB in the beginning and 152.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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: 19]: 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, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 21.0s, OverallIterations: 12, TraceHistogramMax: 101, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 317 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 317 mSDsluCounter, 5822 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5638 mSDsCounter, 1018 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3887 IncrementalHoareTripleChecker+Invalid, 4905 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1018 mSolverCounterUnsat, 184 mSDtfsCounter, 3887 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1648 GetRequests, 1238 SyntacticMatches, 8 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=209occurred in iteration=11, InterpolantAutomatonStates: 418, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 2649 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 106 NumberOfFragments, 660 HoareAnnotationTreeSize, 3 FomulaSimplifications, 15473 FormulaSimplificationTreeSizeReduction, 1.4s HoareSimplificationTime, 3 FomulaSimplificationsInter, 500 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 12.2s InterpolantComputationTime, 1560 NumberOfCodeBlocks, 1478 NumberOfCodeBlocksAsserted, 93 NumberOfCheckSat, 2200 ConstructedInterpolants, 0 QuantifiedInterpolants, 7901 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1541 ConjunctsInSsa, 251 ConjunctsInUnsatCore, 30 InterpolantComputations, 3 PerfectInterpolantSequences, 26464/68563 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: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((x <= 56 && y <= 56) && 56 <= x) && 56 <= y) || (((71 <= y && y <= 71) && 71 <= x) && x < 72)) || (((99 <= x && 99 <= y) && y <= 99) && x < 100)) || (((57 <= x && y <= 57) && 57 <= y) && x <= 57)) || (((x <= 64 && 64 <= x) && 64 <= y) && y <= 64)) || (((x <= 63 && 63 <= y) && 63 <= x) && y <= 63)) || (((y <= 76 && x < 77) && 76 <= x) && 76 <= y)) || (((y <= 68 && x < 69) && 68 <= x) && 68 <= y)) || (((x < 89 && y <= 88) && 88 <= x) && 88 <= y)) || (((y <= 77 && 77 <= y) && x < 78) && 77 <= x)) || (((95 <= x && x < 96) && 95 <= y) && y <= 95)) || (((x < 71 && 70 <= y) && 70 <= x) && y <= 70)) || (((y <= 73 && 73 <= y) && x < 74) && 73 <= x)) || (((y <= 96 && 96 <= y) && x < 97) && 96 <= x)) || (((80 <= x && y <= 80) && x < 81) && 80 <= y)) || (((91 <= y && 91 <= x) && x < 92) && y <= 91)) || (((x <= 61 && 61 <= x) && 61 <= y) && y <= 61)) || (((55 <= y && y <= 55) && x <= 55) && 55 <= x)) || (((x < 94 && 93 <= x) && 93 <= y) && y <= 93)) || (((y <= 59 && 59 <= y) && x <= 59) && 59 <= x)) || (((81 <= y && y <= 81) && x < 82) && 81 <= x)) || (((x < 76 && 75 <= y) && y <= 75) && 75 <= x)) || (((x < 68 && 67 <= x) && y <= 67) && 67 <= y)) || (((y <= 74 && 74 <= x) && x < 75) && 74 <= y)) || (((82 <= x && y <= 82) && x < 83) && 82 <= y)) || (((x <= 62 && 62 <= y) && 62 <= x) && y <= 62)) || (((y <= 89 && 89 <= y) && x < 90) && 89 <= x)) || ((100 <= x && 99 < y) && y <= 100)) || (((58 <= y && y <= 58) && 58 <= x) && x <= 58)) || (((54 <= x && x <= 54) && 54 <= y) && y <= 54)) || (((x < 91 && 90 <= y) && 90 <= x) && y <= 90)) || (((x < 87 && y <= 86) && 86 <= x) && 86 <= y)) || (((83 <= x && 83 <= y) && y <= 83) && x < 84)) || (((92 <= x && x < 93) && y <= 92) && 92 <= y)) || (((87 <= y && 87 <= x) && y <= 87) && x < 88)) || (((x < 79 && 78 <= x) && y <= 78) && 78 <= y)) || (((x < 73 && 72 <= x) && 72 <= y) && y <= 72)) || (((y <= 53 && x <= 53) && 53 <= y) && 53 <= x)) || (((98 <= x && y <= 98) && 98 <= y) && x < 99)) || (((y <= 52 && 52 <= x) && 52 <= y) && x <= 52)) || (((94 <= x && y <= 94) && 94 <= y) && x < 95)) || (((x <= 60 && 60 <= x) && y <= 60) && 60 <= y)) || (((51 <= y && 51 <= x) && x <= 51) && y <= 51)) || (((69 <= x && x < 70) && 69 <= y) && y <= 69)) || (((x < 80 && y <= 79) && 79 <= y) && 79 <= x)) || (((y <= 85 && 85 <= x) && 85 <= y) && x < 86)) || (((66 <= y && x < 67) && y <= 66) && 66 <= x)) || (((84 <= y && x < 85) && y <= 84) && 84 <= x)) || (((97 <= y && 97 <= x) && x < 98) && y <= 97)) || (((y <= 65 && 65 <= x) && 65 <= y) && x < 66)) || ((x <= 50 && y <= 50) && 50 <= y) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-21 02:41:22,515 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