./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label53.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem03_label53.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c75028c45c8bfe0f1d4af80312d164394cbdbf8280624d50449e86195205937 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 11:49:10,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 11:49:10,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 11:49:10,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 11:49:10,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 11:49:10,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 11:49:10,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 11:49:10,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 11:49:10,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 11:49:10,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 11:49:10,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 11:49:10,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 11:49:10,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 11:49:10,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 11:49:10,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 11:49:10,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 11:49:10,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 11:49:10,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 11:49:10,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 11:49:10,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 11:49:10,920 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 11:49:10,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 11:49:10,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 11:49:10,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 11:49:10,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 11:49:10,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 11:49:10,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 11:49:10,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 11:49:10,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 11:49:10,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 11:49:10,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 11:49:10,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 11:49:10,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 11:49:10,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 11:49:10,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 11:49:10,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 11:49:10,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 11:49:10,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 11:49:10,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 11:49:10,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 11:49:10,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 11:49:10,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 11:49:10,939 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 11:49:10,962 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 11:49:10,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 11:49:10,963 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 11:49:10,963 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 11:49:10,964 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 11:49:10,964 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 11:49:10,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 11:49:10,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 11:49:10,965 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 11:49:10,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 11:49:10,966 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 11:49:10,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 11:49:10,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 11:49:10,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 11:49:10,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 11:49:10,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 11:49:10,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 11:49:10,966 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 11:49:10,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 11:49:10,967 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 11:49:10,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 11:49:10,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 11:49:10,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 11:49:10,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 11:49:10,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:49:10,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 11:49:10,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 11:49:10,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 11:49:10,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 11:49:10,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 11:49:10,969 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 11:49:10,969 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 11:49:10,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 11:49:10,970 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c75028c45c8bfe0f1d4af80312d164394cbdbf8280624d50449e86195205937 [2022-07-13 11:49:11,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 11:49:11,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 11:49:11,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 11:49:11,196 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 11:49:11,197 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 11:49:11,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label53.c [2022-07-13 11:49:11,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc27cf2e7/ab6fbaa1bacc4c33940d3205c8f5a7cb/FLAG9fb5d57a1 [2022-07-13 11:49:11,669 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 11:49:11,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label53.c [2022-07-13 11:49:11,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc27cf2e7/ab6fbaa1bacc4c33940d3205c8f5a7cb/FLAG9fb5d57a1 [2022-07-13 11:49:11,973 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc27cf2e7/ab6fbaa1bacc4c33940d3205c8f5a7cb [2022-07-13 11:49:11,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 11:49:11,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 11:49:11,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 11:49:11,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 11:49:11,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 11:49:11,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:49:11" (1/1) ... [2022-07-13 11:49:11,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c4bda7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:49:11, skipping insertion in model container [2022-07-13 11:49:11,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:49:11" (1/1) ... [2022-07-13 11:49:11,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 11:49:12,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 11:49:12,470 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label53.c[60419,60432] [2022-07-13 11:49:12,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:49:12,499 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 11:49:12,628 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label53.c[60419,60432] [2022-07-13 11:49:12,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:49:12,666 INFO L208 MainTranslator]: Completed translation [2022-07-13 11:49:12,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:49:12 WrapperNode [2022-07-13 11:49:12,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 11:49:12,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 11:49:12,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 11:49:12,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 11:49:12,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:49:12" (1/1) ... [2022-07-13 11:49:12,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:49:12" (1/1) ... [2022-07-13 11:49:12,767 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2022-07-13 11:49:12,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 11:49:12,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 11:49:12,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 11:49:12,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 11:49:12,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:49:12" (1/1) ... [2022-07-13 11:49:12,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:49:12" (1/1) ... [2022-07-13 11:49:12,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:49:12" (1/1) ... [2022-07-13 11:49:12,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:49:12" (1/1) ... [2022-07-13 11:49:12,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:49:12" (1/1) ... [2022-07-13 11:49:12,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:49:12" (1/1) ... [2022-07-13 11:49:12,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:49:12" (1/1) ... [2022-07-13 11:49:12,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 11:49:12,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 11:49:12,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 11:49:12,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 11:49:12,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:49:12" (1/1) ... [2022-07-13 11:49:12,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:49:12,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:49:12,892 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) [2022-07-13 11:49:12,894 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 [2022-07-13 11:49:12,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 11:49:12,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 11:49:12,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 11:49:12,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 11:49:13,022 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 11:49:13,023 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 11:49:14,126 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 11:49:14,138 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 11:49:14,138 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 11:49:14,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:49:14 BoogieIcfgContainer [2022-07-13 11:49:14,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 11:49:14,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 11:49:14,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 11:49:14,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 11:49:14,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:49:11" (1/3) ... [2022-07-13 11:49:14,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c3d9c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:49:14, skipping insertion in model container [2022-07-13 11:49:14,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:49:12" (2/3) ... [2022-07-13 11:49:14,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c3d9c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:49:14, skipping insertion in model container [2022-07-13 11:49:14,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:49:14" (3/3) ... [2022-07-13 11:49:14,148 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label53.c [2022-07-13 11:49:14,158 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 11:49:14,158 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 11:49:14,208 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 11:49:14,214 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@4395f604, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@cf30508 [2022-07-13 11:49:14,214 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 11:49:14,221 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:14,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-13 11:49:14,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:14,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:14,245 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:14,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:14,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1022353686, now seen corresponding path program 1 times [2022-07-13 11:49:14,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:14,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509039341] [2022-07-13 11:49:14,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:14,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:14,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:49:14,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:14,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509039341] [2022-07-13 11:49:14,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509039341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:14,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:49:14,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:49:14,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956947603] [2022-07-13 11:49:14,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:14,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:49:14,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:14,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:49:14,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:14,760 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:15,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:15,661 INFO L93 Difference]: Finished difference Result 829 states and 1478 transitions. [2022-07-13 11:49:15,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:49:15,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 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 194 [2022-07-13 11:49:15,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:15,684 INFO L225 Difference]: With dead ends: 829 [2022-07-13 11:49:15,684 INFO L226 Difference]: Without dead ends: 463 [2022-07-13 11:49:15,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:15,689 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 97 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:15,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 127 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:49:15,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-07-13 11:49:15,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 449. [2022-07-13 11:49:15,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.6183035714285714) internal successors, (725), 448 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:15,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 725 transitions. [2022-07-13 11:49:15,756 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 725 transitions. Word has length 194 [2022-07-13 11:49:15,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:15,758 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 725 transitions. [2022-07-13 11:49:15,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:15,759 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 725 transitions. [2022-07-13 11:49:15,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-13 11:49:15,761 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:15,764 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:15,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 11:49:15,765 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:15,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:15,765 INFO L85 PathProgramCache]: Analyzing trace with hash 701641658, now seen corresponding path program 1 times [2022-07-13 11:49:15,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:15,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579648832] [2022-07-13 11:49:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:15,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:49:15,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:15,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579648832] [2022-07-13 11:49:15,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579648832] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:15,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:49:15,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:49:15,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103490572] [2022-07-13 11:49:15,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:15,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:49:15,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:15,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:49:15,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:15,847 INFO L87 Difference]: Start difference. First operand 449 states and 725 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:16,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:16,474 INFO L93 Difference]: Finished difference Result 1319 states and 2138 transitions. [2022-07-13 11:49:16,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:49:16,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 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 199 [2022-07-13 11:49:16,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:16,485 INFO L225 Difference]: With dead ends: 1319 [2022-07-13 11:49:16,485 INFO L226 Difference]: Without dead ends: 872 [2022-07-13 11:49:16,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:16,488 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 249 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:16,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 150 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:49:16,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-07-13 11:49:16,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 870. [2022-07-13 11:49:16,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 1.5120828538550057) internal successors, (1314), 869 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:16,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1314 transitions. [2022-07-13 11:49:16,511 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1314 transitions. Word has length 199 [2022-07-13 11:49:16,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:16,516 INFO L495 AbstractCegarLoop]: Abstraction has 870 states and 1314 transitions. [2022-07-13 11:49:16,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:16,516 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1314 transitions. [2022-07-13 11:49:16,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-13 11:49:16,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:16,519 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:16,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 11:49:16,519 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:16,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:16,520 INFO L85 PathProgramCache]: Analyzing trace with hash -2127492304, now seen corresponding path program 1 times [2022-07-13 11:49:16,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:16,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352539815] [2022-07-13 11:49:16,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:16,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:16,600 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 11:49:16,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:16,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352539815] [2022-07-13 11:49:16,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352539815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:16,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:49:16,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:49:16,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211489364] [2022-07-13 11:49:16,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:16,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:49:16,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:16,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:49:16,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:16,602 INFO L87 Difference]: Start difference. First operand 870 states and 1314 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:17,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:17,216 INFO L93 Difference]: Finished difference Result 2554 states and 3869 transitions. [2022-07-13 11:49:17,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:49:17,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 214 [2022-07-13 11:49:17,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:17,221 INFO L225 Difference]: With dead ends: 2554 [2022-07-13 11:49:17,222 INFO L226 Difference]: Without dead ends: 1686 [2022-07-13 11:49:17,223 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 [2022-07-13 11:49:17,224 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 232 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:17,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 417 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:49:17,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2022-07-13 11:49:17,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1684. [2022-07-13 11:49:17,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.3363042186571599) internal successors, (2249), 1683 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:17,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2249 transitions. [2022-07-13 11:49:17,248 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2249 transitions. Word has length 214 [2022-07-13 11:49:17,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:17,249 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 2249 transitions. [2022-07-13 11:49:17,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:17,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2249 transitions. [2022-07-13 11:49:17,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-07-13 11:49:17,252 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:17,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:17,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 11:49:17,253 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:17,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:17,254 INFO L85 PathProgramCache]: Analyzing trace with hash -453762803, now seen corresponding path program 1 times [2022-07-13 11:49:17,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:17,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447013920] [2022-07-13 11:49:17,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:17,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:17,310 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:49:17,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:17,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447013920] [2022-07-13 11:49:17,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447013920] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:17,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:49:17,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:49:17,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169817744] [2022-07-13 11:49:17,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:17,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:49:17,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:17,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:49:17,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:17,313 INFO L87 Difference]: Start difference. First operand 1684 states and 2249 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:17,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:17,896 INFO L93 Difference]: Finished difference Result 5017 states and 6707 transitions. [2022-07-13 11:49:17,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:49:17,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 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 217 [2022-07-13 11:49:17,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:17,905 INFO L225 Difference]: With dead ends: 5017 [2022-07-13 11:49:17,905 INFO L226 Difference]: Without dead ends: 3335 [2022-07-13 11:49:17,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:17,908 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 259 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:17,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 123 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:49:17,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3335 states. [2022-07-13 11:49:17,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3335 to 3326. [2022-07-13 11:49:17,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3326 states, 3325 states have (on average 1.3230075187969925) internal successors, (4399), 3325 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:17,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 4399 transitions. [2022-07-13 11:49:17,956 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 4399 transitions. Word has length 217 [2022-07-13 11:49:17,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:17,957 INFO L495 AbstractCegarLoop]: Abstraction has 3326 states and 4399 transitions. [2022-07-13 11:49:17,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:17,957 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 4399 transitions. [2022-07-13 11:49:17,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-07-13 11:49:17,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:17,963 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:17,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 11:49:17,963 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:17,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:17,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1946130827, now seen corresponding path program 1 times [2022-07-13 11:49:17,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:17,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142838761] [2022-07-13 11:49:17,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:17,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:49:18,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:18,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142838761] [2022-07-13 11:49:18,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142838761] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:18,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:49:18,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:49:18,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759001940] [2022-07-13 11:49:18,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:18,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:49:18,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:18,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:49:18,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:18,039 INFO L87 Difference]: Start difference. First operand 3326 states and 4399 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:18,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:18,582 INFO L93 Difference]: Finished difference Result 9926 states and 13144 transitions. [2022-07-13 11:49:18,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:49:18,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 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 220 [2022-07-13 11:49:18,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:18,600 INFO L225 Difference]: With dead ends: 9926 [2022-07-13 11:49:18,600 INFO L226 Difference]: Without dead ends: 6602 [2022-07-13 11:49:18,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:18,606 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 217 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:18,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 168 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:49:18,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6602 states. [2022-07-13 11:49:18,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6602 to 5768. [2022-07-13 11:49:18,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5767 states have (on average 1.33674354083579) internal successors, (7709), 5767 states have internal predecessors, (7709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:18,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 7709 transitions. [2022-07-13 11:49:18,694 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 7709 transitions. Word has length 220 [2022-07-13 11:49:18,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:18,694 INFO L495 AbstractCegarLoop]: Abstraction has 5768 states and 7709 transitions. [2022-07-13 11:49:18,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:18,695 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 7709 transitions. [2022-07-13 11:49:18,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-13 11:49:18,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:18,718 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:18,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 11:49:18,719 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:18,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:18,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1028842456, now seen corresponding path program 1 times [2022-07-13 11:49:18,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:18,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325673810] [2022-07-13 11:49:18,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:18,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:18,780 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 11:49:18,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:18,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325673810] [2022-07-13 11:49:18,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325673810] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:18,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:49:18,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:49:18,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652222270] [2022-07-13 11:49:18,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:18,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:49:18,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:18,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:49:18,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:18,783 INFO L87 Difference]: Start difference. First operand 5768 states and 7709 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:19,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:19,421 INFO L93 Difference]: Finished difference Result 15634 states and 21101 transitions. [2022-07-13 11:49:19,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:49:19,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 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 237 [2022-07-13 11:49:19,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:19,452 INFO L225 Difference]: With dead ends: 15634 [2022-07-13 11:49:19,452 INFO L226 Difference]: Without dead ends: 9868 [2022-07-13 11:49:19,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:19,462 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 211 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:19,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 188 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:49:19,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9868 states. [2022-07-13 11:49:19,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9868 to 9643. [2022-07-13 11:49:19,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9643 states, 9642 states have (on average 1.356461315079859) internal successors, (13079), 9642 states have internal predecessors, (13079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:19,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9643 states to 9643 states and 13079 transitions. [2022-07-13 11:49:19,646 INFO L78 Accepts]: Start accepts. Automaton has 9643 states and 13079 transitions. Word has length 237 [2022-07-13 11:49:19,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:19,646 INFO L495 AbstractCegarLoop]: Abstraction has 9643 states and 13079 transitions. [2022-07-13 11:49:19,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:19,646 INFO L276 IsEmpty]: Start isEmpty. Operand 9643 states and 13079 transitions. [2022-07-13 11:49:19,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-13 11:49:19,659 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:19,660 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:19,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 11:49:19,660 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:19,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:19,661 INFO L85 PathProgramCache]: Analyzing trace with hash 694768098, now seen corresponding path program 1 times [2022-07-13 11:49:19,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:19,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154502593] [2022-07-13 11:49:19,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:19,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 11:49:19,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:19,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154502593] [2022-07-13 11:49:19,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154502593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:19,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:49:19,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:49:19,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239580949] [2022-07-13 11:49:19,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:19,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:49:19,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:19,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:49:19,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:19,720 INFO L87 Difference]: Start difference. First operand 9643 states and 13079 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 2 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:20,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:20,381 INFO L93 Difference]: Finished difference Result 22544 states and 30610 transitions. [2022-07-13 11:49:20,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:49:20,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 2 states have internal predecessors, (214), 0 states have call successors, (0), 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 239 [2022-07-13 11:49:20,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:20,411 INFO L225 Difference]: With dead ends: 22544 [2022-07-13 11:49:20,411 INFO L226 Difference]: Without dead ends: 12903 [2022-07-13 11:49:20,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:20,423 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 204 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:20,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 173 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:49:20,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12903 states. [2022-07-13 11:49:20,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12903 to 12891. [2022-07-13 11:49:20,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12891 states, 12890 states have (on average 1.3324282389449185) internal successors, (17175), 12890 states have internal predecessors, (17175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:20,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12891 states to 12891 states and 17175 transitions. [2022-07-13 11:49:20,652 INFO L78 Accepts]: Start accepts. Automaton has 12891 states and 17175 transitions. Word has length 239 [2022-07-13 11:49:20,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:20,652 INFO L495 AbstractCegarLoop]: Abstraction has 12891 states and 17175 transitions. [2022-07-13 11:49:20,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 2 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:20,653 INFO L276 IsEmpty]: Start isEmpty. Operand 12891 states and 17175 transitions. [2022-07-13 11:49:20,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-13 11:49:20,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:20,670 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:20,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 11:49:20,670 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:20,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:20,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1975885463, now seen corresponding path program 1 times [2022-07-13 11:49:20,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:20,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559543574] [2022-07-13 11:49:20,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:20,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:20,756 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 11:49:20,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:20,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559543574] [2022-07-13 11:49:20,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559543574] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:20,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:49:20,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:49:20,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195127370] [2022-07-13 11:49:20,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:20,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:49:20,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:20,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:49:20,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:20,758 INFO L87 Difference]: Start difference. First operand 12891 states and 17175 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:21,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:21,448 INFO L93 Difference]: Finished difference Result 28632 states and 37901 transitions. [2022-07-13 11:49:21,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:49:21,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 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 240 [2022-07-13 11:49:21,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:21,474 INFO L225 Difference]: With dead ends: 28632 [2022-07-13 11:49:21,475 INFO L226 Difference]: Without dead ends: 16353 [2022-07-13 11:49:21,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:21,487 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 205 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:21,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 159 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:49:21,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16353 states. [2022-07-13 11:49:21,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16353 to 16350. [2022-07-13 11:49:21,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16350 states, 16349 states have (on average 1.313719493547006) internal successors, (21478), 16349 states have internal predecessors, (21478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:21,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16350 states to 16350 states and 21478 transitions. [2022-07-13 11:49:21,710 INFO L78 Accepts]: Start accepts. Automaton has 16350 states and 21478 transitions. Word has length 240 [2022-07-13 11:49:21,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:21,711 INFO L495 AbstractCegarLoop]: Abstraction has 16350 states and 21478 transitions. [2022-07-13 11:49:21,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:21,711 INFO L276 IsEmpty]: Start isEmpty. Operand 16350 states and 21478 transitions. [2022-07-13 11:49:21,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-07-13 11:49:21,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:21,729 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:21,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 11:49:21,731 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:21,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:21,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1128746597, now seen corresponding path program 1 times [2022-07-13 11:49:21,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:21,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075813113] [2022-07-13 11:49:21,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:21,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 11:49:21,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:21,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075813113] [2022-07-13 11:49:21,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075813113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:21,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:49:21,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:49:21,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550938870] [2022-07-13 11:49:21,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:21,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:49:21,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:21,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:49:21,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:21,800 INFO L87 Difference]: Start difference. First operand 16350 states and 21478 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:22,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:22,573 INFO L93 Difference]: Finished difference Result 37380 states and 48886 transitions. [2022-07-13 11:49:22,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:49:22,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 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 242 [2022-07-13 11:49:22,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:22,608 INFO L225 Difference]: With dead ends: 37380 [2022-07-13 11:49:22,608 INFO L226 Difference]: Without dead ends: 21642 [2022-07-13 11:49:22,626 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 [2022-07-13 11:49:22,627 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 202 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:22,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 424 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:49:22,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21642 states. [2022-07-13 11:49:22,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21642 to 21638. [2022-07-13 11:49:22,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21638 states, 21637 states have (on average 1.2715256273975135) internal successors, (27512), 21637 states have internal predecessors, (27512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:22,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21638 states to 21638 states and 27512 transitions. [2022-07-13 11:49:22,974 INFO L78 Accepts]: Start accepts. Automaton has 21638 states and 27512 transitions. Word has length 242 [2022-07-13 11:49:22,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:22,975 INFO L495 AbstractCegarLoop]: Abstraction has 21638 states and 27512 transitions. [2022-07-13 11:49:22,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:22,975 INFO L276 IsEmpty]: Start isEmpty. Operand 21638 states and 27512 transitions. [2022-07-13 11:49:23,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-07-13 11:49:23,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:23,004 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:23,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 11:49:23,005 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:23,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:23,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1372664791, now seen corresponding path program 1 times [2022-07-13 11:49:23,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:23,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064674698] [2022-07-13 11:49:23,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:23,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:23,168 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 11:49:23,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:23,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064674698] [2022-07-13 11:49:23,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064674698] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:49:23,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540250491] [2022-07-13 11:49:23,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:23,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:49:23,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:49:23,172 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) [2022-07-13 11:49:23,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 11:49:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:23,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:49:23,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:49:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-13 11:49:23,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:49:23,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540250491] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:23,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:49:23,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-07-13 11:49:23,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446819019] [2022-07-13 11:49:23,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:23,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:49:23,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:23,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:49:23,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:49:23,433 INFO L87 Difference]: Start difference. First operand 21638 states and 27512 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 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) [2022-07-13 11:49:24,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:24,203 INFO L93 Difference]: Finished difference Result 54472 states and 69458 transitions. [2022-07-13 11:49:24,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:49:24,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 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 246 [2022-07-13 11:49:24,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:24,256 INFO L225 Difference]: With dead ends: 54472 [2022-07-13 11:49:24,256 INFO L226 Difference]: Without dead ends: 33039 [2022-07-13 11:49:24,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:49:24,272 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 235 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:24,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 167 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:49:24,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33039 states. [2022-07-13 11:49:24,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33039 to 30800. [2022-07-13 11:49:24,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30800 states, 30799 states have (on average 1.2555277768758726) internal successors, (38669), 30799 states have internal predecessors, (38669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:24,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30800 states to 30800 states and 38669 transitions. [2022-07-13 11:49:24,675 INFO L78 Accepts]: Start accepts. Automaton has 30800 states and 38669 transitions. Word has length 246 [2022-07-13 11:49:24,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:24,675 INFO L495 AbstractCegarLoop]: Abstraction has 30800 states and 38669 transitions. [2022-07-13 11:49:24,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 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) [2022-07-13 11:49:24,676 INFO L276 IsEmpty]: Start isEmpty. Operand 30800 states and 38669 transitions. [2022-07-13 11:49:24,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-07-13 11:49:24,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:24,708 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:24,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 11:49:24,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 11:49:24,939 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:24,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:24,939 INFO L85 PathProgramCache]: Analyzing trace with hash 430746202, now seen corresponding path program 1 times [2022-07-13 11:49:24,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:24,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297927904] [2022-07-13 11:49:24,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:24,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 11:49:25,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:25,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297927904] [2022-07-13 11:49:25,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297927904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:25,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:49:25,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:49:25,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886164799] [2022-07-13 11:49:25,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:25,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:49:25,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:25,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:49:25,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:25,021 INFO L87 Difference]: Start difference. First operand 30800 states and 38669 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:25,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:25,929 INFO L93 Difference]: Finished difference Result 63040 states and 78986 transitions. [2022-07-13 11:49:25,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:49:25,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 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 248 [2022-07-13 11:49:25,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:25,978 INFO L225 Difference]: With dead ends: 63040 [2022-07-13 11:49:25,978 INFO L226 Difference]: Without dead ends: 37533 [2022-07-13 11:49:26,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:26,002 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 197 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:26,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 211 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:49:26,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37533 states. [2022-07-13 11:49:26,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37533 to 37519. [2022-07-13 11:49:26,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37519 states, 37518 states have (on average 1.2423903193133963) internal successors, (46612), 37518 states have internal predecessors, (46612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:26,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37519 states to 37519 states and 46612 transitions. [2022-07-13 11:49:26,490 INFO L78 Accepts]: Start accepts. Automaton has 37519 states and 46612 transitions. Word has length 248 [2022-07-13 11:49:26,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:26,490 INFO L495 AbstractCegarLoop]: Abstraction has 37519 states and 46612 transitions. [2022-07-13 11:49:26,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:26,491 INFO L276 IsEmpty]: Start isEmpty. Operand 37519 states and 46612 transitions. [2022-07-13 11:49:26,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-07-13 11:49:26,523 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:26,524 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:26,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 11:49:26,524 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:26,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:26,525 INFO L85 PathProgramCache]: Analyzing trace with hash -874828795, now seen corresponding path program 2 times [2022-07-13 11:49:26,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:26,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761760483] [2022-07-13 11:49:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:26,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:26,589 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 11:49:26,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:26,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761760483] [2022-07-13 11:49:26,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761760483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:26,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:49:26,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:49:26,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969991753] [2022-07-13 11:49:26,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:26,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:49:26,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:26,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:49:26,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:26,592 INFO L87 Difference]: Start difference. First operand 37519 states and 46612 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:27,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:27,154 INFO L93 Difference]: Finished difference Result 105417 states and 131073 transitions. [2022-07-13 11:49:27,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:49:27,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 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 255 [2022-07-13 11:49:27,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:27,251 INFO L225 Difference]: With dead ends: 105417 [2022-07-13 11:49:27,251 INFO L226 Difference]: Without dead ends: 70339 [2022-07-13 11:49:27,277 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 [2022-07-13 11:49:27,278 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 332 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:27,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 943 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 11:49:27,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70339 states. [2022-07-13 11:49:27,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70339 to 70336. [2022-07-13 11:49:28,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70336 states, 70335 states have (on average 1.2212838558328) internal successors, (85899), 70335 states have internal predecessors, (85899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:28,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70336 states to 70336 states and 85899 transitions. [2022-07-13 11:49:28,115 INFO L78 Accepts]: Start accepts. Automaton has 70336 states and 85899 transitions. Word has length 255 [2022-07-13 11:49:28,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:28,116 INFO L495 AbstractCegarLoop]: Abstraction has 70336 states and 85899 transitions. [2022-07-13 11:49:28,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:28,116 INFO L276 IsEmpty]: Start isEmpty. Operand 70336 states and 85899 transitions. [2022-07-13 11:49:28,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-07-13 11:49:28,158 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:28,159 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:28,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 11:49:28,159 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:28,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:28,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2121304353, now seen corresponding path program 1 times [2022-07-13 11:49:28,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:28,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110248000] [2022-07-13 11:49:28,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:28,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:28,420 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 11:49:28,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:28,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110248000] [2022-07-13 11:49:28,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110248000] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:28,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:49:28,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:49:28,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406809102] [2022-07-13 11:49:28,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:28,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:49:28,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:28,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:49:28,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:28,422 INFO L87 Difference]: Start difference. First operand 70336 states and 85899 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:29,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:29,632 INFO L93 Difference]: Finished difference Result 164420 states and 204085 transitions. [2022-07-13 11:49:29,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:49:29,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 261 [2022-07-13 11:49:29,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:29,758 INFO L225 Difference]: With dead ends: 164420 [2022-07-13 11:49:29,758 INFO L226 Difference]: Without dead ends: 94899 [2022-07-13 11:49:29,795 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 [2022-07-13 11:49:29,795 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 216 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:29,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 201 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:49:29,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94899 states. [2022-07-13 11:49:30,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94899 to 94899. [2022-07-13 11:49:30,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94899 states, 94898 states have (on average 1.175894117895003) internal successors, (111590), 94898 states have internal predecessors, (111590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:31,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94899 states to 94899 states and 111590 transitions. [2022-07-13 11:49:31,032 INFO L78 Accepts]: Start accepts. Automaton has 94899 states and 111590 transitions. Word has length 261 [2022-07-13 11:49:31,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:31,032 INFO L495 AbstractCegarLoop]: Abstraction has 94899 states and 111590 transitions. [2022-07-13 11:49:31,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:31,033 INFO L276 IsEmpty]: Start isEmpty. Operand 94899 states and 111590 transitions. [2022-07-13 11:49:31,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-07-13 11:49:31,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:31,082 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:31,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 11:49:31,082 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:31,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:31,083 INFO L85 PathProgramCache]: Analyzing trace with hash -546964361, now seen corresponding path program 1 times [2022-07-13 11:49:31,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:31,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694709676] [2022-07-13 11:49:31,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:31,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-13 11:49:31,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:31,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694709676] [2022-07-13 11:49:31,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694709676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:31,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:49:31,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:49:31,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459202847] [2022-07-13 11:49:31,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:31,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:49:31,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:31,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:49:31,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:31,148 INFO L87 Difference]: Start difference. First operand 94899 states and 111590 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:32,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:32,613 INFO L93 Difference]: Finished difference Result 190023 states and 223921 transitions. [2022-07-13 11:49:32,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:49:32,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2022-07-13 11:49:32,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:32,748 INFO L225 Difference]: With dead ends: 190023 [2022-07-13 11:49:32,748 INFO L226 Difference]: Without dead ends: 97363 [2022-07-13 11:49:32,783 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 [2022-07-13 11:49:32,784 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 214 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:32,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 379 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:49:32,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97363 states. [2022-07-13 11:49:33,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97363 to 81880. [2022-07-13 11:49:33,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81880 states, 81879 states have (on average 1.1747578744244556) internal successors, (96188), 81879 states have internal predecessors, (96188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:33,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81880 states to 81880 states and 96188 transitions. [2022-07-13 11:49:33,795 INFO L78 Accepts]: Start accepts. Automaton has 81880 states and 96188 transitions. Word has length 265 [2022-07-13 11:49:33,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:33,795 INFO L495 AbstractCegarLoop]: Abstraction has 81880 states and 96188 transitions. [2022-07-13 11:49:33,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:33,795 INFO L276 IsEmpty]: Start isEmpty. Operand 81880 states and 96188 transitions. [2022-07-13 11:49:33,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-07-13 11:49:33,834 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:33,834 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:33,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 11:49:33,835 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:33,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:33,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1012338614, now seen corresponding path program 1 times [2022-07-13 11:49:33,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:33,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436627737] [2022-07-13 11:49:33,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:33,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:33,923 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:49:33,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:33,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436627737] [2022-07-13 11:49:33,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436627737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:33,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:49:33,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:49:33,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89622012] [2022-07-13 11:49:33,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:33,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:49:33,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:33,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:49:33,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:33,927 INFO L87 Difference]: Start difference. First operand 81880 states and 96188 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:34,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:34,996 INFO L93 Difference]: Finished difference Result 163353 states and 191946 transitions. [2022-07-13 11:49:34,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:49:34,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 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 268 [2022-07-13 11:49:34,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:35,092 INFO L225 Difference]: With dead ends: 163353 [2022-07-13 11:49:35,092 INFO L226 Difference]: Without dead ends: 82288 [2022-07-13 11:49:35,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:35,151 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 133 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:35,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 199 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:49:35,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82288 states. [2022-07-13 11:49:36,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82288 to 82286. [2022-07-13 11:49:36,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82286 states, 82285 states have (on average 1.174478945129732) internal successors, (96642), 82285 states have internal predecessors, (96642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:36,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82286 states to 82286 states and 96642 transitions. [2022-07-13 11:49:36,395 INFO L78 Accepts]: Start accepts. Automaton has 82286 states and 96642 transitions. Word has length 268 [2022-07-13 11:49:36,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:36,395 INFO L495 AbstractCegarLoop]: Abstraction has 82286 states and 96642 transitions. [2022-07-13 11:49:36,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:36,395 INFO L276 IsEmpty]: Start isEmpty. Operand 82286 states and 96642 transitions. [2022-07-13 11:49:36,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-07-13 11:49:36,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:36,441 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:36,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 11:49:36,441 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:36,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:36,442 INFO L85 PathProgramCache]: Analyzing trace with hash -605481540, now seen corresponding path program 1 times [2022-07-13 11:49:36,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:36,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206263225] [2022-07-13 11:49:36,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:36,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-13 11:49:36,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:36,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206263225] [2022-07-13 11:49:36,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206263225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:36,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:49:36,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:49:36,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471489672] [2022-07-13 11:49:36,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:36,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:49:36,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:36,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:49:36,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:49:36,521 INFO L87 Difference]: Start difference. First operand 82286 states and 96642 transitions. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:37,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:37,899 INFO L93 Difference]: Finished difference Result 163824 states and 192507 transitions. [2022-07-13 11:49:37,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:49:37,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 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 281 [2022-07-13 11:49:37,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:38,007 INFO L225 Difference]: With dead ends: 163824 [2022-07-13 11:49:38,008 INFO L226 Difference]: Without dead ends: 82759 [2022-07-13 11:49:38,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:49:38,051 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 411 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:38,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 165 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:49:38,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82759 states. [2022-07-13 11:49:38,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82759 to 79850. [2022-07-13 11:49:39,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79850 states, 79849 states have (on average 1.17634535185162) internal successors, (93930), 79849 states have internal predecessors, (93930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:39,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79850 states to 79850 states and 93930 transitions. [2022-07-13 11:49:39,106 INFO L78 Accepts]: Start accepts. Automaton has 79850 states and 93930 transitions. Word has length 281 [2022-07-13 11:49:39,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:39,107 INFO L495 AbstractCegarLoop]: Abstraction has 79850 states and 93930 transitions. [2022-07-13 11:49:39,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:39,107 INFO L276 IsEmpty]: Start isEmpty. Operand 79850 states and 93930 transitions. [2022-07-13 11:49:39,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-07-13 11:49:39,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:39,157 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:39,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 11:49:39,157 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:39,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:39,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2105980273, now seen corresponding path program 1 times [2022-07-13 11:49:39,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:39,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487886576] [2022-07-13 11:49:39,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:39,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:39,496 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 109 proven. 6 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-13 11:49:39,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:39,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487886576] [2022-07-13 11:49:39,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487886576] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:49:39,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181626809] [2022-07-13 11:49:39,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:39,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:49:39,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:49:39,509 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) [2022-07-13 11:49:39,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 11:49:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:39,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:49:39,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:49:39,680 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-13 11:49:39,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:49:39,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181626809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:39,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:49:39,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-13 11:49:39,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823003913] [2022-07-13 11:49:39,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:39,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:49:39,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:39,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:49:39,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:49:39,681 INFO L87 Difference]: Start difference. First operand 79850 states and 93930 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:40,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:40,653 INFO L93 Difference]: Finished difference Result 154877 states and 181630 transitions. [2022-07-13 11:49:40,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:49:40,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 288 [2022-07-13 11:49:40,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:40,740 INFO L225 Difference]: With dead ends: 154877 [2022-07-13 11:49:40,741 INFO L226 Difference]: Without dead ends: 75435 [2022-07-13 11:49:40,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:49:40,791 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 214 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:40,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 393 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:49:40,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75435 states. [2022-07-13 11:49:41,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75435 to 75384. [2022-07-13 11:49:41,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75384 states, 75383 states have (on average 1.1582850244750142) internal successors, (87315), 75383 states have internal predecessors, (87315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:41,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75384 states to 75384 states and 87315 transitions. [2022-07-13 11:49:41,998 INFO L78 Accepts]: Start accepts. Automaton has 75384 states and 87315 transitions. Word has length 288 [2022-07-13 11:49:41,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:41,998 INFO L495 AbstractCegarLoop]: Abstraction has 75384 states and 87315 transitions. [2022-07-13 11:49:41,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:41,998 INFO L276 IsEmpty]: Start isEmpty. Operand 75384 states and 87315 transitions. [2022-07-13 11:49:42,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-07-13 11:49:42,041 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:42,042 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:42,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 11:49:42,242 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,SelfDestructingSolverStorable16 [2022-07-13 11:49:42,243 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:42,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:42,243 INFO L85 PathProgramCache]: Analyzing trace with hash -2139363347, now seen corresponding path program 1 times [2022-07-13 11:49:42,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:42,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926410514] [2022-07-13 11:49:42,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:42,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:42,328 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-13 11:49:42,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:42,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926410514] [2022-07-13 11:49:42,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926410514] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:42,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:49:42,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:49:42,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036829113] [2022-07-13 11:49:42,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:42,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:49:42,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:42,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:49:42,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:42,330 INFO L87 Difference]: Start difference. First operand 75384 states and 87315 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:43,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:43,409 INFO L93 Difference]: Finished difference Result 190687 states and 221025 transitions. [2022-07-13 11:49:43,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:49:43,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 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 302 [2022-07-13 11:49:43,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:43,569 INFO L225 Difference]: With dead ends: 190687 [2022-07-13 11:49:43,569 INFO L226 Difference]: Without dead ends: 116321 [2022-07-13 11:49:43,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:43,628 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 243 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:43,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 223 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:49:43,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116321 states. [2022-07-13 11:49:45,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116321 to 115687. [2022-07-13 11:49:45,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115687 states, 115686 states have (on average 1.155982573517971) internal successors, (133731), 115686 states have internal predecessors, (133731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:45,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115687 states to 115687 states and 133731 transitions. [2022-07-13 11:49:45,363 INFO L78 Accepts]: Start accepts. Automaton has 115687 states and 133731 transitions. Word has length 302 [2022-07-13 11:49:45,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:45,363 INFO L495 AbstractCegarLoop]: Abstraction has 115687 states and 133731 transitions. [2022-07-13 11:49:45,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:45,363 INFO L276 IsEmpty]: Start isEmpty. Operand 115687 states and 133731 transitions. [2022-07-13 11:49:45,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-07-13 11:49:45,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:45,427 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:45,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 11:49:45,427 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:45,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:45,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1713025815, now seen corresponding path program 1 times [2022-07-13 11:49:45,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:45,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192714643] [2022-07-13 11:49:45,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:45,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-13 11:49:45,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:45,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192714643] [2022-07-13 11:49:45,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192714643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:45,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:49:45,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:49:45,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538473988] [2022-07-13 11:49:45,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:45,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:49:45,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:45,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:49:45,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:49:45,514 INFO L87 Difference]: Start difference. First operand 115687 states and 133731 transitions. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:46,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:46,810 INFO L93 Difference]: Finished difference Result 190567 states and 220708 transitions. [2022-07-13 11:49:46,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:49:46,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 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 307 [2022-07-13 11:49:46,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:46,906 INFO L225 Difference]: With dead ends: 190567 [2022-07-13 11:49:46,906 INFO L226 Difference]: Without dead ends: 72246 [2022-07-13 11:49:46,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:49:46,967 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 446 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:46,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 59 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 11:49:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72246 states. [2022-07-13 11:49:47,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72246 to 68591. [2022-07-13 11:49:47,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68591 states, 68590 states have (on average 1.0949263741070128) internal successors, (75101), 68590 states have internal predecessors, (75101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:47,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68591 states to 68591 states and 75101 transitions. [2022-07-13 11:49:47,878 INFO L78 Accepts]: Start accepts. Automaton has 68591 states and 75101 transitions. Word has length 307 [2022-07-13 11:49:47,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:47,878 INFO L495 AbstractCegarLoop]: Abstraction has 68591 states and 75101 transitions. [2022-07-13 11:49:47,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:47,878 INFO L276 IsEmpty]: Start isEmpty. Operand 68591 states and 75101 transitions. [2022-07-13 11:49:47,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-07-13 11:49:47,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:47,917 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:47,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 11:49:47,917 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:47,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:47,917 INFO L85 PathProgramCache]: Analyzing trace with hash -876686430, now seen corresponding path program 1 times [2022-07-13 11:49:47,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:47,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414821359] [2022-07-13 11:49:47,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:47,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:47,993 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:49:47,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:47,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414821359] [2022-07-13 11:49:47,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414821359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:47,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:49:47,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:49:47,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793379838] [2022-07-13 11:49:47,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:47,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:49:47,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:47,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:49:47,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:47,995 INFO L87 Difference]: Start difference. First operand 68591 states and 75101 transitions. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:48,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:48,934 INFO L93 Difference]: Finished difference Result 116815 states and 127719 transitions. [2022-07-13 11:49:48,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:49:48,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 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 309 [2022-07-13 11:49:48,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:49,012 INFO L225 Difference]: With dead ends: 116815 [2022-07-13 11:49:49,012 INFO L226 Difference]: Without dead ends: 58403 [2022-07-13 11:49:49,029 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 [2022-07-13 11:49:49,029 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 217 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:49,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 312 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:49:49,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58403 states. [2022-07-13 11:49:49,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58403 to 56563. [2022-07-13 11:49:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56563 states, 56562 states have (on average 1.083943283476539) internal successors, (61310), 56562 states have internal predecessors, (61310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:49,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56563 states to 56563 states and 61310 transitions. [2022-07-13 11:49:49,763 INFO L78 Accepts]: Start accepts. Automaton has 56563 states and 61310 transitions. Word has length 309 [2022-07-13 11:49:49,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:49,764 INFO L495 AbstractCegarLoop]: Abstraction has 56563 states and 61310 transitions. [2022-07-13 11:49:49,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:49,764 INFO L276 IsEmpty]: Start isEmpty. Operand 56563 states and 61310 transitions. [2022-07-13 11:49:49,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-07-13 11:49:49,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:49,797 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:49,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 11:49:49,797 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:49,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:49,797 INFO L85 PathProgramCache]: Analyzing trace with hash 488183126, now seen corresponding path program 1 times [2022-07-13 11:49:49,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:49,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422465418] [2022-07-13 11:49:49,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:49,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-13 11:49:49,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:49,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422465418] [2022-07-13 11:49:49,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422465418] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:49,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:49:49,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:49:49,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720793698] [2022-07-13 11:49:50,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:50,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:49:50,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:50,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:49:50,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:49:50,084 INFO L87 Difference]: Start difference. First operand 56563 states and 61310 transitions. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:50,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:50,973 INFO L93 Difference]: Finished difference Result 103381 states and 111844 transitions. [2022-07-13 11:49:50,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:49:50,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 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 315 [2022-07-13 11:49:50,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:51,044 INFO L225 Difference]: With dead ends: 103381 [2022-07-13 11:49:51,044 INFO L226 Difference]: Without dead ends: 58419 [2022-07-13 11:49:51,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:49:51,074 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 349 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:51,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 85 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:49:51,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58419 states. [2022-07-13 11:49:51,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58419 to 57581. [2022-07-13 11:49:51,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57581 states, 57580 states have (on average 1.08238971865231) internal successors, (62324), 57580 states have internal predecessors, (62324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:51,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57581 states to 57581 states and 62324 transitions. [2022-07-13 11:49:51,821 INFO L78 Accepts]: Start accepts. Automaton has 57581 states and 62324 transitions. Word has length 315 [2022-07-13 11:49:51,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:51,822 INFO L495 AbstractCegarLoop]: Abstraction has 57581 states and 62324 transitions. [2022-07-13 11:49:51,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:51,822 INFO L276 IsEmpty]: Start isEmpty. Operand 57581 states and 62324 transitions. [2022-07-13 11:49:51,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-07-13 11:49:51,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:51,857 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:51,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 11:49:51,857 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:51,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:51,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1356426216, now seen corresponding path program 1 times [2022-07-13 11:49:51,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:51,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321061037] [2022-07-13 11:49:51,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:51,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:51,935 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 100 proven. 6 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-07-13 11:49:51,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:51,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321061037] [2022-07-13 11:49:51,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321061037] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:49:51,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224582787] [2022-07-13 11:49:51,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:51,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:49:51,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:49:51,952 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) [2022-07-13 11:49:51,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 11:49:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:52,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:49:52,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:49:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-13 11:49:52,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:49:52,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224582787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:52,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:49:52,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-13 11:49:52,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297233070] [2022-07-13 11:49:52,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:52,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:49:52,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:52,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:49:52,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:49:52,295 INFO L87 Difference]: Start difference. First operand 57581 states and 62324 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:52,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:52,941 INFO L93 Difference]: Finished difference Result 113332 states and 122754 transitions. [2022-07-13 11:49:52,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:49:52,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 328 [2022-07-13 11:49:52,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:53,012 INFO L225 Difference]: With dead ends: 113332 [2022-07-13 11:49:53,012 INFO L226 Difference]: Without dead ends: 57174 [2022-07-13 11:49:53,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:49:53,046 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 69 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:53,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 274 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:49:53,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57174 states. [2022-07-13 11:49:53,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57174 to 57169. [2022-07-13 11:49:53,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57169 states, 57168 states have (on average 1.0792226420375035) internal successors, (61697), 57168 states have internal predecessors, (61697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:53,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57169 states to 57169 states and 61697 transitions. [2022-07-13 11:49:53,886 INFO L78 Accepts]: Start accepts. Automaton has 57169 states and 61697 transitions. Word has length 328 [2022-07-13 11:49:53,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:53,887 INFO L495 AbstractCegarLoop]: Abstraction has 57169 states and 61697 transitions. [2022-07-13 11:49:53,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:53,887 INFO L276 IsEmpty]: Start isEmpty. Operand 57169 states and 61697 transitions. [2022-07-13 11:49:53,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-07-13 11:49:53,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:53,925 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:53,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-13 11:49:54,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:49:54,128 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:54,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:54,128 INFO L85 PathProgramCache]: Analyzing trace with hash -287112087, now seen corresponding path program 1 times [2022-07-13 11:49:54,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:54,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369457163] [2022-07-13 11:49:54,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:54,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:54,225 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 152 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-13 11:49:54,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:54,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369457163] [2022-07-13 11:49:54,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369457163] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:49:54,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851532457] [2022-07-13 11:49:54,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:54,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:49:54,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:49:54,229 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) [2022-07-13 11:49:54,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 11:49:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:54,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:49:54,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:49:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-13 11:49:54,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:49:54,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851532457] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:54,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:49:54,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-07-13 11:49:54,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888260524] [2022-07-13 11:49:54,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:54,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:49:54,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:54,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:49:54,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:49:54,468 INFO L87 Difference]: Start difference. First operand 57169 states and 61697 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:55,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:55,173 INFO L93 Difference]: Finished difference Result 145870 states and 156967 transitions. [2022-07-13 11:49:55,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:49:55,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 0 states have call successors, (0), 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 343 [2022-07-13 11:49:55,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:55,279 INFO L225 Difference]: With dead ends: 145870 [2022-07-13 11:49:55,279 INFO L226 Difference]: Without dead ends: 90124 [2022-07-13 11:49:55,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:49:55,332 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 178 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:55,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 474 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:49:55,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90124 states. [2022-07-13 11:49:56,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90124 to 86662. [2022-07-13 11:49:56,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86662 states, 86661 states have (on average 1.0734355707873207) internal successors, (93025), 86661 states have internal predecessors, (93025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:56,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86662 states to 86662 states and 93025 transitions. [2022-07-13 11:49:56,511 INFO L78 Accepts]: Start accepts. Automaton has 86662 states and 93025 transitions. Word has length 343 [2022-07-13 11:49:56,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:56,511 INFO L495 AbstractCegarLoop]: Abstraction has 86662 states and 93025 transitions. [2022-07-13 11:49:56,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:56,512 INFO L276 IsEmpty]: Start isEmpty. Operand 86662 states and 93025 transitions. [2022-07-13 11:49:56,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-07-13 11:49:56,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:56,541 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:56,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 11:49:56,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:49:56,742 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:56,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:56,742 INFO L85 PathProgramCache]: Analyzing trace with hash 838199465, now seen corresponding path program 1 times [2022-07-13 11:49:56,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:56,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086323211] [2022-07-13 11:49:56,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:56,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:56,826 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 125 proven. 6 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-13 11:49:56,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:56,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086323211] [2022-07-13 11:49:56,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086323211] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:49:56,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329957445] [2022-07-13 11:49:56,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:56,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:49:56,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:49:56,828 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) [2022-07-13 11:49:56,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 11:49:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:56,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 11:49:56,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:49:56,997 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-13 11:49:56,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:49:56,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329957445] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:56,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:49:56,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-13 11:49:56,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394285368] [2022-07-13 11:49:56,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:56,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:49:56,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:56,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:49:56,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:49:56,998 INFO L87 Difference]: Start difference. First operand 86662 states and 93025 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:58,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:49:58,033 INFO L93 Difference]: Finished difference Result 163359 states and 175341 transitions. [2022-07-13 11:49:58,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:49:58,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 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 347 [2022-07-13 11:49:58,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:49:58,117 INFO L225 Difference]: With dead ends: 163359 [2022-07-13 11:49:58,117 INFO L226 Difference]: Without dead ends: 70609 [2022-07-13 11:49:58,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:49:58,157 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 210 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:49:58,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 291 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:49:58,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70609 states. [2022-07-13 11:49:58,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70609 to 61058. [2022-07-13 11:49:58,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61058 states, 61057 states have (on average 1.0580768789819348) internal successors, (64603), 61057 states have internal predecessors, (64603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:59,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61058 states to 61058 states and 64603 transitions. [2022-07-13 11:49:59,057 INFO L78 Accepts]: Start accepts. Automaton has 61058 states and 64603 transitions. Word has length 347 [2022-07-13 11:49:59,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:49:59,057 INFO L495 AbstractCegarLoop]: Abstraction has 61058 states and 64603 transitions. [2022-07-13 11:49:59,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:49:59,057 INFO L276 IsEmpty]: Start isEmpty. Operand 61058 states and 64603 transitions. [2022-07-13 11:49:59,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2022-07-13 11:49:59,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:49:59,082 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:49:59,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 11:49:59,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-13 11:49:59,287 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:49:59,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:49:59,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1053159416, now seen corresponding path program 1 times [2022-07-13 11:49:59,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:49:59,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302447789] [2022-07-13 11:49:59,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:49:59,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:49:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:49:59,403 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-13 11:49:59,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:49:59,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302447789] [2022-07-13 11:49:59,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302447789] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:49:59,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:49:59,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:49:59,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230449684] [2022-07-13 11:49:59,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:49:59,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:49:59,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:49:59,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:49:59,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:49:59,406 INFO L87 Difference]: Start difference. First operand 61058 states and 64603 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 2 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:00,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:50:00,068 INFO L93 Difference]: Finished difference Result 123953 states and 131229 transitions. [2022-07-13 11:50:00,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:50:00,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 2 states have internal predecessors, (324), 0 states have call successors, (0), 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 397 [2022-07-13 11:50:00,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:50:00,134 INFO L225 Difference]: With dead ends: 123953 [2022-07-13 11:50:00,134 INFO L226 Difference]: Without dead ends: 65337 [2022-07-13 11:50:00,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:50:00,169 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 102 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:50:00,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 93 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:50:00,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65337 states. [2022-07-13 11:50:00,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65337 to 64924. [2022-07-13 11:50:01,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64924 states, 64923 states have (on average 1.0568827688184466) internal successors, (68616), 64923 states have internal predecessors, (68616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:01,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64924 states to 64924 states and 68616 transitions. [2022-07-13 11:50:01,116 INFO L78 Accepts]: Start accepts. Automaton has 64924 states and 68616 transitions. Word has length 397 [2022-07-13 11:50:01,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:50:01,116 INFO L495 AbstractCegarLoop]: Abstraction has 64924 states and 68616 transitions. [2022-07-13 11:50:01,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 2 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:01,117 INFO L276 IsEmpty]: Start isEmpty. Operand 64924 states and 68616 transitions. [2022-07-13 11:50:01,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2022-07-13 11:50:01,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:50:01,149 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:50:01,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 11:50:01,149 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:50:01,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:50:01,150 INFO L85 PathProgramCache]: Analyzing trace with hash 155067841, now seen corresponding path program 1 times [2022-07-13 11:50:01,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:50:01,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978825062] [2022-07-13 11:50:01,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:50:01,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:50:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:50:01,255 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 161 proven. 6 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-07-13 11:50:01,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:50:01,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978825062] [2022-07-13 11:50:01,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978825062] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:50:01,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609524028] [2022-07-13 11:50:01,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:50:01,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:50:01,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:50:01,272 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) [2022-07-13 11:50:01,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 11:50:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:50:01,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 11:50:01,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:50:01,532 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-07-13 11:50:01,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:50:01,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609524028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:50:01,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:50:01,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-13 11:50:01,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242124997] [2022-07-13 11:50:01,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:50:01,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:50:01,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:50:01,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:50:01,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:50:01,535 INFO L87 Difference]: Start difference. First operand 64924 states and 68616 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:02,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:50:02,508 INFO L93 Difference]: Finished difference Result 128647 states and 136070 transitions. [2022-07-13 11:50:02,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:50:02,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 450 [2022-07-13 11:50:02,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:50:02,579 INFO L225 Difference]: With dead ends: 128647 [2022-07-13 11:50:02,579 INFO L226 Difference]: Without dead ends: 68809 [2022-07-13 11:50:02,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:50:02,606 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 202 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:50:02,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 100 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:50:02,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68809 states. [2022-07-13 11:50:03,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68809 to 67376. [2022-07-13 11:50:03,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67376 states, 67375 states have (on average 1.0516808905380335) internal successors, (70857), 67375 states have internal predecessors, (70857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:03,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67376 states to 67376 states and 70857 transitions. [2022-07-13 11:50:03,529 INFO L78 Accepts]: Start accepts. Automaton has 67376 states and 70857 transitions. Word has length 450 [2022-07-13 11:50:03,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:50:03,529 INFO L495 AbstractCegarLoop]: Abstraction has 67376 states and 70857 transitions. [2022-07-13 11:50:03,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:03,529 INFO L276 IsEmpty]: Start isEmpty. Operand 67376 states and 70857 transitions. [2022-07-13 11:50:03,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2022-07-13 11:50:03,559 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:50:03,559 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:50:03,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 11:50:03,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-13 11:50:03,764 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:50:03,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:50:03,764 INFO L85 PathProgramCache]: Analyzing trace with hash 48959511, now seen corresponding path program 1 times [2022-07-13 11:50:03,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:50:03,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866432052] [2022-07-13 11:50:03,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:50:03,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:50:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:50:04,118 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 331 proven. 131 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 11:50:04,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:50:04,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866432052] [2022-07-13 11:50:04,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866432052] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:50:04,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447921189] [2022-07-13 11:50:04,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:50:04,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:50:04,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:50:04,121 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) [2022-07-13 11:50:04,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 11:50:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:50:04,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:50:04,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:50:04,542 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 331 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-07-13 11:50:04,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:50:04,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447921189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:50:04,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:50:04,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2022-07-13 11:50:04,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770618184] [2022-07-13 11:50:04,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:50:04,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:50:04,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:50:04,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:50:04,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 11:50:04,544 INFO L87 Difference]: Start difference. First operand 67376 states and 70857 transitions. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 2 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:05,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:50:05,250 INFO L93 Difference]: Finished difference Result 124985 states and 131408 transitions. [2022-07-13 11:50:05,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:50:05,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 2 states have internal predecessors, (338), 0 states have call successors, (0), 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 490 [2022-07-13 11:50:05,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:50:05,327 INFO L225 Difference]: With dead ends: 124985 [2022-07-13 11:50:05,327 INFO L226 Difference]: Without dead ends: 62699 [2022-07-13 11:50:05,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 11:50:05,366 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 115 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:50:05,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 75 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:50:05,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62699 states. [2022-07-13 11:50:06,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62699 to 54370. [2022-07-13 11:50:06,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54370 states, 54369 states have (on average 1.041843697695378) internal successors, (56644), 54369 states have internal predecessors, (56644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:06,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54370 states to 54370 states and 56644 transitions. [2022-07-13 11:50:06,181 INFO L78 Accepts]: Start accepts. Automaton has 54370 states and 56644 transitions. Word has length 490 [2022-07-13 11:50:06,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:50:06,181 INFO L495 AbstractCegarLoop]: Abstraction has 54370 states and 56644 transitions. [2022-07-13 11:50:06,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 2 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:06,181 INFO L276 IsEmpty]: Start isEmpty. Operand 54370 states and 56644 transitions. [2022-07-13 11:50:06,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-07-13 11:50:06,210 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:50:06,210 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:50:06,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 11:50:06,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:50:06,424 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:50:06,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:50:06,424 INFO L85 PathProgramCache]: Analyzing trace with hash -160394913, now seen corresponding path program 1 times [2022-07-13 11:50:06,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:50:06,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605183342] [2022-07-13 11:50:06,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:50:06,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:50:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:50:06,531 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 170 proven. 6 refuted. 0 times theorem prover too weak. 604 trivial. 0 not checked. [2022-07-13 11:50:06,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:50:06,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605183342] [2022-07-13 11:50:06,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605183342] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:50:06,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976229042] [2022-07-13 11:50:06,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:50:06,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:50:06,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:50:06,533 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) [2022-07-13 11:50:06,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 11:50:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:50:06,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 11:50:06,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:50:06,818 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 596 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-07-13 11:50:06,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:50:06,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976229042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:50:06,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:50:06,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-13 11:50:06,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648127858] [2022-07-13 11:50:06,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:50:06,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:50:06,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:50:06,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:50:06,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:50:06,820 INFO L87 Difference]: Start difference. First operand 54370 states and 56644 transitions. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)