./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label30.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/Problem13_label30.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 e9187c2a2102d3e400be280528e6f5828841c3bd8908371ec9602651e1a68303 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 12:55:01,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 12:55:01,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 12:55:01,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 12:55:01,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 12:55:01,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 12:55:01,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 12:55:01,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 12:55:01,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 12:55:01,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 12:55:01,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 12:55:01,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 12:55:01,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 12:55:01,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 12:55:01,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 12:55:01,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 12:55:01,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 12:55:01,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 12:55:01,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 12:55:01,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 12:55:01,953 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 12:55:01,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 12:55:01,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 12:55:01,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 12:55:01,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 12:55:01,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 12:55:01,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 12:55:01,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 12:55:01,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 12:55:01,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 12:55:01,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 12:55:01,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 12:55:01,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 12:55:01,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 12:55:01,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 12:55:01,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 12:55:01,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 12:55:01,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 12:55:01,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 12:55:01,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 12:55:01,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 12:55:01,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 12:55:01,986 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 12:55:02,009 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 12:55:02,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 12:55:02,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 12:55:02,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 12:55:02,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 12:55:02,012 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 12:55:02,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 12:55:02,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 12:55:02,013 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 12:55:02,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 12:55:02,014 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 12:55:02,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 12:55:02,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 12:55:02,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 12:55:02,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 12:55:02,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 12:55:02,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 12:55:02,015 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 12:55:02,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 12:55:02,015 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 12:55:02,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 12:55:02,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 12:55:02,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 12:55:02,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 12:55:02,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 12:55:02,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 12:55:02,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 12:55:02,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 12:55:02,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 12:55:02,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 12:55:02,017 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 12:55:02,017 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 12:55:02,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 12:55:02,017 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9187c2a2102d3e400be280528e6f5828841c3bd8908371ec9602651e1a68303 [2022-07-13 12:55:02,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 12:55:02,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 12:55:02,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 12:55:02,196 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 12:55:02,196 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 12:55:02,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label30.c [2022-07-13 12:55:02,237 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/debf102f6/cde42ea246794caca26951ab61a21a22/FLAGa8d01bb50 [2022-07-13 12:55:02,822 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 12:55:02,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label30.c [2022-07-13 12:55:02,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/debf102f6/cde42ea246794caca26951ab61a21a22/FLAGa8d01bb50 [2022-07-13 12:55:03,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/debf102f6/cde42ea246794caca26951ab61a21a22 [2022-07-13 12:55:03,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 12:55:03,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 12:55:03,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 12:55:03,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 12:55:03,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 12:55:03,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 12:55:03" (1/1) ... [2022-07-13 12:55:03,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e86eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:03, skipping insertion in model container [2022-07-13 12:55:03,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 12:55:03" (1/1) ... [2022-07-13 12:55:03,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 12:55:03,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 12:55:03,607 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/Problem13_label30.c[2990,3003] [2022-07-13 12:55:04,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 12:55:04,308 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 12:55:04,330 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/Problem13_label30.c[2990,3003] [2022-07-13 12:55:04,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 12:55:04,698 INFO L208 MainTranslator]: Completed translation [2022-07-13 12:55:04,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:04 WrapperNode [2022-07-13 12:55:04,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 12:55:04,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 12:55:04,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 12:55:04,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 12:55:04,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:04" (1/1) ... [2022-07-13 12:55:04,752 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:04" (1/1) ... [2022-07-13 12:55:05,327 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-07-13 12:55:05,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 12:55:05,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 12:55:05,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 12:55:05,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 12:55:05,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:04" (1/1) ... [2022-07-13 12:55:05,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:04" (1/1) ... [2022-07-13 12:55:05,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:04" (1/1) ... [2022-07-13 12:55:05,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:04" (1/1) ... [2022-07-13 12:55:05,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:04" (1/1) ... [2022-07-13 12:55:05,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:04" (1/1) ... [2022-07-13 12:55:05,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:04" (1/1) ... [2022-07-13 12:55:05,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 12:55:05,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 12:55:05,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 12:55:05,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 12:55:05,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:04" (1/1) ... [2022-07-13 12:55:05,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 12:55:05,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:55:05,876 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 12:55:05,882 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 12:55:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 12:55:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 12:55:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 12:55:05,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 12:55:05,965 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 12:55:05,966 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 12:55:09,259 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 12:55:09,270 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 12:55:09,271 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 12:55:09,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 12:55:09 BoogieIcfgContainer [2022-07-13 12:55:09,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 12:55:09,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 12:55:09,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 12:55:09,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 12:55:09,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 12:55:03" (1/3) ... [2022-07-13 12:55:09,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d34fe91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 12:55:09, skipping insertion in model container [2022-07-13 12:55:09,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:04" (2/3) ... [2022-07-13 12:55:09,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d34fe91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 12:55:09, skipping insertion in model container [2022-07-13 12:55:09,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 12:55:09" (3/3) ... [2022-07-13 12:55:09,279 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label30.c [2022-07-13 12:55:09,288 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 12:55:09,288 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 12:55:09,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 12:55:09,334 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@362038cf, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@127a9f40 [2022-07-13 12:55:09,334 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 12:55:09,340 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 12:55:09,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 12:55:09,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:09,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:55:09,345 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:09,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:09,348 INFO L85 PathProgramCache]: Analyzing trace with hash 406614337, now seen corresponding path program 1 times [2022-07-13 12:55:09,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:09,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090838739] [2022-07-13 12:55:09,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:09,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:09,486 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 12:55:09,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:09,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090838739] [2022-07-13 12:55:09,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090838739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:09,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:55:09,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:55:09,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892964073] [2022-07-13 12:55:09,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:09,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:09,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:09,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:09,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:09,513 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 12:55:13,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:13,166 INFO L93 Difference]: Finished difference Result 3082 states and 5689 transitions. [2022-07-13 12:55:13,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:55:13,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-07-13 12:55:13,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:13,183 INFO L225 Difference]: With dead ends: 3082 [2022-07-13 12:55:13,183 INFO L226 Difference]: Without dead ends: 1899 [2022-07-13 12:55:13,193 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 12:55:13,199 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 1020 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:13,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 641 Invalid, 3554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 2955 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-13 12:55:13,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-07-13 12:55:13,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1894. [2022-07-13 12:55:13,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 1.7374537770734284) internal successors, (3289), 1893 states have internal predecessors, (3289), 0 states have call successors, (0), 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 12:55:13,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 3289 transitions. [2022-07-13 12:55:13,282 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 3289 transitions. Word has length 19 [2022-07-13 12:55:13,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:55:13,282 INFO L495 AbstractCegarLoop]: Abstraction has 1894 states and 3289 transitions. [2022-07-13 12:55:13,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 12:55:13,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 3289 transitions. [2022-07-13 12:55:13,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-13 12:55:13,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:13,285 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 12:55:13,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 12:55:13,286 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:13,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:13,287 INFO L85 PathProgramCache]: Analyzing trace with hash 680997466, now seen corresponding path program 1 times [2022-07-13 12:55:13,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:13,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667665783] [2022-07-13 12:55:13,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:13,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:13,436 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:55:13,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:13,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667665783] [2022-07-13 12:55:13,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667665783] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:13,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:55:13,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:55:13,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709466918] [2022-07-13 12:55:13,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:13,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:13,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:13,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:13,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:13,441 INFO L87 Difference]: Start difference. First operand 1894 states and 3289 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 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 12:55:16,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:16,240 INFO L93 Difference]: Finished difference Result 5384 states and 9441 transitions. [2022-07-13 12:55:16,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:55:16,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-07-13 12:55:16,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:16,251 INFO L225 Difference]: With dead ends: 5384 [2022-07-13 12:55:16,251 INFO L226 Difference]: Without dead ends: 3492 [2022-07-13 12:55:16,256 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 12:55:16,257 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:16,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1013 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 12:55:16,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2022-07-13 12:55:16,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 3491. [2022-07-13 12:55:16,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 3490 states have (on average 1.5383954154727795) internal successors, (5369), 3490 states have internal predecessors, (5369), 0 states have call successors, (0), 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 12:55:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 5369 transitions. [2022-07-13 12:55:16,297 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 5369 transitions. Word has length 84 [2022-07-13 12:55:16,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:55:16,299 INFO L495 AbstractCegarLoop]: Abstraction has 3491 states and 5369 transitions. [2022-07-13 12:55:16,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 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 12:55:16,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 5369 transitions. [2022-07-13 12:55:16,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-13 12:55:16,304 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:16,304 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 12:55:16,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 12:55:16,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:16,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:16,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1374228415, now seen corresponding path program 1 times [2022-07-13 12:55:16,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:16,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956791272] [2022-07-13 12:55:16,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:16,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:16,393 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:55:16,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:16,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956791272] [2022-07-13 12:55:16,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956791272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:16,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:55:16,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:55:16,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736963979] [2022-07-13 12:55:16,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:16,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:16,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:16,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:16,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:16,397 INFO L87 Difference]: Start difference. First operand 3491 states and 5369 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:19,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:19,169 INFO L93 Difference]: Finished difference Result 10169 states and 15700 transitions. [2022-07-13 12:55:19,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:55:19,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-07-13 12:55:19,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:19,187 INFO L225 Difference]: With dead ends: 10169 [2022-07-13 12:55:19,187 INFO L226 Difference]: Without dead ends: 6680 [2022-07-13 12:55:19,191 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 12:55:19,192 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:19,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 847 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 12:55:19,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6680 states. [2022-07-13 12:55:19,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6680 to 6669. [2022-07-13 12:55:19,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6669 states, 6668 states have (on average 1.375224955008998) internal successors, (9170), 6668 states have internal predecessors, (9170), 0 states have call successors, (0), 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 12:55:19,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6669 states to 6669 states and 9170 transitions. [2022-07-13 12:55:19,268 INFO L78 Accepts]: Start accepts. Automaton has 6669 states and 9170 transitions. Word has length 86 [2022-07-13 12:55:19,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:55:19,268 INFO L495 AbstractCegarLoop]: Abstraction has 6669 states and 9170 transitions. [2022-07-13 12:55:19,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:19,269 INFO L276 IsEmpty]: Start isEmpty. Operand 6669 states and 9170 transitions. [2022-07-13 12:55:19,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-13 12:55:19,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:19,270 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 12:55:19,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 12:55:19,270 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:19,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:19,271 INFO L85 PathProgramCache]: Analyzing trace with hash -2112836531, now seen corresponding path program 1 times [2022-07-13 12:55:19,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:19,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099573091] [2022-07-13 12:55:19,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:19,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:19,390 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:55:19,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:19,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099573091] [2022-07-13 12:55:19,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099573091] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:19,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:55:19,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:55:19,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975667956] [2022-07-13 12:55:19,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:19,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:19,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:19,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:19,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:19,395 INFO L87 Difference]: Start difference. First operand 6669 states and 9170 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:21,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:21,996 INFO L93 Difference]: Finished difference Result 14123 states and 19185 transitions. [2022-07-13 12:55:21,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:55:21,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-07-13 12:55:21,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:22,015 INFO L225 Difference]: With dead ends: 14123 [2022-07-13 12:55:22,015 INFO L226 Difference]: Without dead ends: 7456 [2022-07-13 12:55:22,022 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 12:55:22,023 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:22,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1215 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 12:55:22,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7456 states. [2022-07-13 12:55:22,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7456 to 7456. [2022-07-13 12:55:22,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7456 states, 7455 states have (on average 1.3362843729040912) internal successors, (9962), 7455 states have internal predecessors, (9962), 0 states have call successors, (0), 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 12:55:22,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7456 states to 7456 states and 9962 transitions. [2022-07-13 12:55:22,130 INFO L78 Accepts]: Start accepts. Automaton has 7456 states and 9962 transitions. Word has length 130 [2022-07-13 12:55:22,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:55:22,130 INFO L495 AbstractCegarLoop]: Abstraction has 7456 states and 9962 transitions. [2022-07-13 12:55:22,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:22,131 INFO L276 IsEmpty]: Start isEmpty. Operand 7456 states and 9962 transitions. [2022-07-13 12:55:22,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-13 12:55:22,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:22,132 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 12:55:22,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 12:55:22,132 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:22,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:22,133 INFO L85 PathProgramCache]: Analyzing trace with hash -159560457, now seen corresponding path program 1 times [2022-07-13 12:55:22,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:22,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645936909] [2022-07-13 12:55:22,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:22,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:22,347 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:55:22,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:22,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645936909] [2022-07-13 12:55:22,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645936909] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 12:55:22,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191736413] [2022-07-13 12:55:22,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:22,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:55:22,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:55:22,357 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 12:55:22,358 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 12:55:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:22,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 12:55:22,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 12:55:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 12:55:22,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 12:55:22,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191736413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:22,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 12:55:22,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-07-13 12:55:22,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965166312] [2022-07-13 12:55:22,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:22,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:22,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:22,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:22,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 12:55:22,568 INFO L87 Difference]: Start difference. First operand 7456 states and 9962 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:25,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:25,412 INFO L93 Difference]: Finished difference Result 19656 states and 26991 transitions. [2022-07-13 12:55:25,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:55:25,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2022-07-13 12:55:25,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:25,439 INFO L225 Difference]: With dead ends: 19656 [2022-07-13 12:55:25,440 INFO L226 Difference]: Without dead ends: 12989 [2022-07-13 12:55:25,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 12:55:25,446 INFO L413 NwaCegarLoop]: 1071 mSDtfsCounter, 737 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2526 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 3305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:25,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1222 Invalid, 3305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2526 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 12:55:25,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12989 states. [2022-07-13 12:55:25,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12989 to 12972. [2022-07-13 12:55:25,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.235910878112713) internal successors, (16031), 12971 states have internal predecessors, (16031), 0 states have call successors, (0), 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 12:55:25,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 16031 transitions. [2022-07-13 12:55:25,605 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 16031 transitions. Word has length 144 [2022-07-13 12:55:25,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:55:25,605 INFO L495 AbstractCegarLoop]: Abstraction has 12972 states and 16031 transitions. [2022-07-13 12:55:25,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:25,606 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 16031 transitions. [2022-07-13 12:55:25,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-07-13 12:55:25,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:25,609 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-13 12:55:25,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 12:55:25,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:55:25,828 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:25,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:25,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1187355270, now seen corresponding path program 1 times [2022-07-13 12:55:25,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:25,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734552346] [2022-07-13 12:55:25,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:25,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-07-13 12:55:25,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:25,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734552346] [2022-07-13 12:55:25,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734552346] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:25,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:55:25,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:55:25,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028039591] [2022-07-13 12:55:25,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:25,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:25,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:25,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:25,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:25,914 INFO L87 Difference]: Start difference. First operand 12972 states and 16031 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 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 12:55:28,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:28,481 INFO L93 Difference]: Finished difference Result 22792 states and 28651 transitions. [2022-07-13 12:55:28,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:55:28,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 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 231 [2022-07-13 12:55:28,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:28,499 INFO L225 Difference]: With dead ends: 22792 [2022-07-13 12:55:28,499 INFO L226 Difference]: Without dead ends: 12980 [2022-07-13 12:55:28,508 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 12:55:28,509 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:28,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1211 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 12:55:28,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12980 states. [2022-07-13 12:55:28,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12980 to 12972. [2022-07-13 12:55:28,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.2347544522396114) internal successors, (16016), 12971 states have internal predecessors, (16016), 0 states have call successors, (0), 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 12:55:28,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 16016 transitions. [2022-07-13 12:55:28,643 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 16016 transitions. Word has length 231 [2022-07-13 12:55:28,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:55:28,644 INFO L495 AbstractCegarLoop]: Abstraction has 12972 states and 16016 transitions. [2022-07-13 12:55:28,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 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 12:55:28,644 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 16016 transitions. [2022-07-13 12:55:28,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-13 12:55:28,646 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:28,646 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:55:28,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 12:55:28,647 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:28,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:28,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1610863008, now seen corresponding path program 1 times [2022-07-13 12:55:28,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:28,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312151871] [2022-07-13 12:55:28,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:28,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:28,769 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:55:28,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:28,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312151871] [2022-07-13 12:55:28,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312151871] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:28,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:55:28,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:55:28,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131275045] [2022-07-13 12:55:28,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:28,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:28,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:28,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:28,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:28,773 INFO L87 Difference]: Start difference. First operand 12972 states and 16016 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 12:55:31,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:31,589 INFO L93 Difference]: Finished difference Result 36166 states and 45134 transitions. [2022-07-13 12:55:31,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:55:31,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2022-07-13 12:55:31,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:31,625 INFO L225 Difference]: With dead ends: 36166 [2022-07-13 12:55:31,626 INFO L226 Difference]: Without dead ends: 23196 [2022-07-13 12:55:31,641 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 12:55:31,642 INFO L413 NwaCegarLoop]: 1851 mSDtfsCounter, 841 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:31,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1989 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 12:55:31,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23196 states. [2022-07-13 12:55:31,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23196 to 22404. [2022-07-13 12:55:31,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22404 states, 22403 states have (on average 1.1931884122662144) internal successors, (26731), 22403 states have internal predecessors, (26731), 0 states have call successors, (0), 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 12:55:31,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22404 states to 22404 states and 26731 transitions. [2022-07-13 12:55:31,898 INFO L78 Accepts]: Start accepts. Automaton has 22404 states and 26731 transitions. Word has length 233 [2022-07-13 12:55:31,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:55:31,899 INFO L495 AbstractCegarLoop]: Abstraction has 22404 states and 26731 transitions. [2022-07-13 12:55:31,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 12:55:31,899 INFO L276 IsEmpty]: Start isEmpty. Operand 22404 states and 26731 transitions. [2022-07-13 12:55:31,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-07-13 12:55:31,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:31,901 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-13 12:55:31,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 12:55:31,902 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:31,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:31,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1517547792, now seen corresponding path program 1 times [2022-07-13 12:55:31,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:31,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646829465] [2022-07-13 12:55:31,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:31,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:31,970 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 12:55:31,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:31,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646829465] [2022-07-13 12:55:31,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646829465] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:31,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:55:31,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:55:31,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085633834] [2022-07-13 12:55:31,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:31,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:31,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:31,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:31,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:31,973 INFO L87 Difference]: Start difference. First operand 22404 states and 26731 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 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 12:55:34,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:34,821 INFO L93 Difference]: Finished difference Result 55046 states and 66948 transitions. [2022-07-13 12:55:34,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:55:34,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 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 255 [2022-07-13 12:55:34,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:34,862 INFO L225 Difference]: With dead ends: 55046 [2022-07-13 12:55:34,863 INFO L226 Difference]: Without dead ends: 33431 [2022-07-13 12:55:34,880 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 12:55:34,880 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 882 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:34,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 928 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 12:55:34,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33431 states. [2022-07-13 12:55:35,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33431 to 32635. [2022-07-13 12:55:35,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32635 states, 32634 states have (on average 1.176135318992462) internal successors, (38382), 32634 states have internal predecessors, (38382), 0 states have call successors, (0), 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 12:55:35,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32635 states to 32635 states and 38382 transitions. [2022-07-13 12:55:35,206 INFO L78 Accepts]: Start accepts. Automaton has 32635 states and 38382 transitions. Word has length 255 [2022-07-13 12:55:35,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:55:35,206 INFO L495 AbstractCegarLoop]: Abstraction has 32635 states and 38382 transitions. [2022-07-13 12:55:35,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 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 12:55:35,207 INFO L276 IsEmpty]: Start isEmpty. Operand 32635 states and 38382 transitions. [2022-07-13 12:55:35,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-07-13 12:55:35,210 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:35,210 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 12:55:35,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 12:55:35,210 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:35,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:35,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1203309205, now seen corresponding path program 1 times [2022-07-13 12:55:35,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:35,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938052445] [2022-07-13 12:55:35,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:35,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:35,300 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-13 12:55:35,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:35,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938052445] [2022-07-13 12:55:35,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938052445] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:35,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:55:35,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:55:35,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125302860] [2022-07-13 12:55:35,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:35,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:35,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:35,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:35,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:35,302 INFO L87 Difference]: Start difference. First operand 32635 states and 38382 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 12:55:38,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:38,509 INFO L93 Difference]: Finished difference Result 76294 states and 91193 transitions. [2022-07-13 12:55:38,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:55:38,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 310 [2022-07-13 12:55:38,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:38,573 INFO L225 Difference]: With dead ends: 76294 [2022-07-13 12:55:38,573 INFO L226 Difference]: Without dead ends: 44448 [2022-07-13 12:55:38,594 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 12:55:38,595 INFO L413 NwaCegarLoop]: 1806 mSDtfsCounter, 845 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2550 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 2550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:38,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 1950 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 2550 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-13 12:55:38,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44448 states. [2022-07-13 12:55:38,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44448 to 43657. [2022-07-13 12:55:38,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43657 states, 43656 states have (on average 1.151663001649258) internal successors, (50277), 43656 states have internal predecessors, (50277), 0 states have call successors, (0), 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 12:55:39,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43657 states to 43657 states and 50277 transitions. [2022-07-13 12:55:39,003 INFO L78 Accepts]: Start accepts. Automaton has 43657 states and 50277 transitions. Word has length 310 [2022-07-13 12:55:39,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:55:39,004 INFO L495 AbstractCegarLoop]: Abstraction has 43657 states and 50277 transitions. [2022-07-13 12:55:39,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 12:55:39,004 INFO L276 IsEmpty]: Start isEmpty. Operand 43657 states and 50277 transitions. [2022-07-13 12:55:39,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-07-13 12:55:39,008 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:39,008 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 12:55:39,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 12:55:39,008 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:39,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:39,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1203727433, now seen corresponding path program 1 times [2022-07-13 12:55:39,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:39,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486690296] [2022-07-13 12:55:39,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:39,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:39,242 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 162 proven. 113 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 12:55:39,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:39,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486690296] [2022-07-13 12:55:39,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486690296] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 12:55:39,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668402807] [2022-07-13 12:55:39,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:39,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:55:39,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:55:39,244 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 12:55:39,245 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 12:55:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:39,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 12:55:39,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 12:55:39,433 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-13 12:55:39,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 12:55:39,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668402807] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:39,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 12:55:39,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-07-13 12:55:39,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145003458] [2022-07-13 12:55:39,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:39,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:39,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:39,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:39,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-13 12:55:39,436 INFO L87 Difference]: Start difference. First operand 43657 states and 50277 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 12:55:42,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:42,114 INFO L93 Difference]: Finished difference Result 86516 states and 99752 transitions. [2022-07-13 12:55:42,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:55:42,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 325 [2022-07-13 12:55:42,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:42,156 INFO L225 Difference]: With dead ends: 86516 [2022-07-13 12:55:42,156 INFO L226 Difference]: Without dead ends: 43648 [2022-07-13 12:55:42,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-13 12:55:42,180 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 1076 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:42,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 818 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 12:55:42,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43648 states. [2022-07-13 12:55:42,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43648 to 43647. [2022-07-13 12:55:42,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43647 states, 43646 states have (on average 1.1132749851074555) internal successors, (48590), 43646 states have internal predecessors, (48590), 0 states have call successors, (0), 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 12:55:42,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43647 states to 43647 states and 48590 transitions. [2022-07-13 12:55:42,541 INFO L78 Accepts]: Start accepts. Automaton has 43647 states and 48590 transitions. Word has length 325 [2022-07-13 12:55:42,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:55:42,542 INFO L495 AbstractCegarLoop]: Abstraction has 43647 states and 48590 transitions. [2022-07-13 12:55:42,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 12:55:42,542 INFO L276 IsEmpty]: Start isEmpty. Operand 43647 states and 48590 transitions. [2022-07-13 12:55:42,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-07-13 12:55:42,547 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:42,547 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 12:55:42,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 12:55:42,765 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,SelfDestructingSolverStorable9 [2022-07-13 12:55:42,765 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:42,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:42,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1740237047, now seen corresponding path program 1 times [2022-07-13 12:55:42,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:42,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895514690] [2022-07-13 12:55:42,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:42,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:42,880 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2022-07-13 12:55:42,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:42,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895514690] [2022-07-13 12:55:42,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895514690] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:42,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:55:42,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:55:42,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056379462] [2022-07-13 12:55:42,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:42,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:42,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:42,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:42,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:42,883 INFO L87 Difference]: Start difference. First operand 43647 states and 48590 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 12:55:45,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:45,475 INFO L93 Difference]: Finished difference Result 86503 states and 96385 transitions. [2022-07-13 12:55:45,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:55:45,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 344 [2022-07-13 12:55:45,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:45,523 INFO L225 Difference]: With dead ends: 86503 [2022-07-13 12:55:45,523 INFO L226 Difference]: Without dead ends: 43645 [2022-07-13 12:55:45,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:45,542 INFO L413 NwaCegarLoop]: 1342 mSDtfsCounter, 1183 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:45,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1183 Valid, 1421 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 12:55:45,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43645 states. [2022-07-13 12:55:45,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43645 to 43644. [2022-07-13 12:55:45,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43644 states, 43643 states have (on average 1.086588914602571) internal successors, (47422), 43643 states have internal predecessors, (47422), 0 states have call successors, (0), 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 12:55:45,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43644 states to 43644 states and 47422 transitions. [2022-07-13 12:55:45,906 INFO L78 Accepts]: Start accepts. Automaton has 43644 states and 47422 transitions. Word has length 344 [2022-07-13 12:55:45,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:55:45,906 INFO L495 AbstractCegarLoop]: Abstraction has 43644 states and 47422 transitions. [2022-07-13 12:55:45,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 12:55:45,907 INFO L276 IsEmpty]: Start isEmpty. Operand 43644 states and 47422 transitions. [2022-07-13 12:55:45,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-07-13 12:55:45,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:45,911 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2022-07-13 12:55:45,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 12:55:45,911 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:45,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:45,912 INFO L85 PathProgramCache]: Analyzing trace with hash 266222346, now seen corresponding path program 1 times [2022-07-13 12:55:45,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:45,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686437446] [2022-07-13 12:55:45,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:45,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:46,001 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-13 12:55:46,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:46,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686437446] [2022-07-13 12:55:46,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686437446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:46,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:55:46,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:55:46,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798024379] [2022-07-13 12:55:46,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:46,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 12:55:46,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:46,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 12:55:46,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 12:55:46,004 INFO L87 Difference]: Start difference. First operand 43644 states and 47422 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 12:55:51,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:51,783 INFO L93 Difference]: Finished difference Result 150460 states and 163810 transitions. [2022-07-13 12:55:51,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 12:55:51,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 367 [2022-07-13 12:55:51,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:51,897 INFO L225 Difference]: With dead ends: 150460 [2022-07-13 12:55:51,897 INFO L226 Difference]: Without dead ends: 107605 [2022-07-13 12:55:51,929 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 12:55:51,930 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 1715 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 6005 mSolverCounterSat, 1095 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 7100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1095 IncrementalHoareTripleChecker+Valid, 6005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:51,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1715 Valid, 754 Invalid, 7100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1095 Valid, 6005 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-13 12:55:51,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107605 states. [2022-07-13 12:55:52,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107605 to 104326. [2022-07-13 12:55:52,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104326 states, 104325 states have (on average 1.0794440450515217) internal successors, (112613), 104325 states have internal predecessors, (112613), 0 states have call successors, (0), 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 12:55:53,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104326 states to 104326 states and 112613 transitions. [2022-07-13 12:55:53,101 INFO L78 Accepts]: Start accepts. Automaton has 104326 states and 112613 transitions. Word has length 367 [2022-07-13 12:55:53,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:55:53,101 INFO L495 AbstractCegarLoop]: Abstraction has 104326 states and 112613 transitions. [2022-07-13 12:55:53,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 12:55:53,102 INFO L276 IsEmpty]: Start isEmpty. Operand 104326 states and 112613 transitions. [2022-07-13 12:55:53,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-07-13 12:55:53,108 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:53,108 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 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] [2022-07-13 12:55:53,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 12:55:53,109 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:53,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:53,109 INFO L85 PathProgramCache]: Analyzing trace with hash 670957024, now seen corresponding path program 1 times [2022-07-13 12:55:53,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:53,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108143969] [2022-07-13 12:55:53,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:53,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 331 proven. 113 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-13 12:55:53,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:53,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108143969] [2022-07-13 12:55:53,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108143969] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 12:55:53,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821284230] [2022-07-13 12:55:53,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:53,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:55:53,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:55:53,304 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 12:55:53,342 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 12:55:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:53,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 12:55:53,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 12:55:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 331 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-07-13 12:55:53,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 12:55:53,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821284230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:53,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 12:55:53,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 12:55:53,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597659199] [2022-07-13 12:55:53,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:53,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:53,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:53,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:53,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-13 12:55:53,922 INFO L87 Difference]: Start difference. First operand 104326 states and 112613 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 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 12:55:57,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:57,089 INFO L93 Difference]: Finished difference Result 202358 states and 218745 transitions. [2022-07-13 12:55:57,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:55:57,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 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 410 [2022-07-13 12:55:57,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:57,296 INFO L225 Difference]: With dead ends: 202358 [2022-07-13 12:55:57,296 INFO L226 Difference]: Without dead ends: 108272 [2022-07-13 12:55:57,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-13 12:55:57,333 INFO L413 NwaCegarLoop]: 1033 mSDtfsCounter, 683 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:57,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1167 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 12:55:57,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108272 states. [2022-07-13 12:55:58,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108272 to 106688. [2022-07-13 12:55:58,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106688 states, 106687 states have (on average 1.07176132049828) internal successors, (114343), 106687 states have internal predecessors, (114343), 0 states have call successors, (0), 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 12:55:58,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106688 states to 106688 states and 114343 transitions. [2022-07-13 12:55:58,366 INFO L78 Accepts]: Start accepts. Automaton has 106688 states and 114343 transitions. Word has length 410 [2022-07-13 12:55:58,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:55:58,366 INFO L495 AbstractCegarLoop]: Abstraction has 106688 states and 114343 transitions. [2022-07-13 12:55:58,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 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 12:55:58,366 INFO L276 IsEmpty]: Start isEmpty. Operand 106688 states and 114343 transitions. [2022-07-13 12:55:58,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2022-07-13 12:55:58,373 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:58,374 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2022-07-13 12:55:58,391 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 12:55:58,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:55:58,591 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:58,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:58,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1710949667, now seen corresponding path program 1 times [2022-07-13 12:55:58,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:58,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678138303] [2022-07-13 12:55:58,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:58,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:58,898 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 679 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-07-13 12:55:58,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:58,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678138303] [2022-07-13 12:55:58,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678138303] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:58,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:55:58,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:55:58,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167873549] [2022-07-13 12:55:58,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:58,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:58,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:58,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:58,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:58,901 INFO L87 Difference]: Start difference. First operand 106688 states and 114343 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 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 12:56:01,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:01,972 INFO L93 Difference]: Finished difference Result 214166 states and 229487 transitions. [2022-07-13 12:56:01,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:01,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 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 456 [2022-07-13 12:56:01,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:02,102 INFO L225 Difference]: With dead ends: 214166 [2022-07-13 12:56:02,102 INFO L226 Difference]: Without dead ends: 108267 [2022-07-13 12:56:02,142 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 12:56:02,143 INFO L413 NwaCegarLoop]: 1351 mSDtfsCounter, 938 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2396 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 2396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:02,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 1436 Invalid, 2979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 2396 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 12:56:02,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108267 states. [2022-07-13 12:56:03,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108267 to 106678. [2022-07-13 12:56:03,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106678 states, 106677 states have (on average 1.0612128200080617) internal successors, (113207), 106677 states have internal predecessors, (113207), 0 states have call successors, (0), 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 12:56:03,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106678 states to 106678 states and 113207 transitions. [2022-07-13 12:56:03,373 INFO L78 Accepts]: Start accepts. Automaton has 106678 states and 113207 transitions. Word has length 456 [2022-07-13 12:56:03,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:03,373 INFO L495 AbstractCegarLoop]: Abstraction has 106678 states and 113207 transitions. [2022-07-13 12:56:03,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 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 12:56:03,374 INFO L276 IsEmpty]: Start isEmpty. Operand 106678 states and 113207 transitions. [2022-07-13 12:56:03,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2022-07-13 12:56:03,380 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:03,381 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:56:03,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 12:56:03,381 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:03,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:03,382 INFO L85 PathProgramCache]: Analyzing trace with hash -902660767, now seen corresponding path program 1 times [2022-07-13 12:56:03,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:03,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968179185] [2022-07-13 12:56:03,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:03,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:03,516 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 655 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-07-13 12:56:03,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:03,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968179185] [2022-07-13 12:56:03,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968179185] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:03,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:56:03,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:56:03,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734911640] [2022-07-13 12:56:03,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:03,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:03,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:03,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:03,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:03,519 INFO L87 Difference]: Start difference. First operand 106678 states and 113207 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 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 12:56:06,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:06,708 INFO L93 Difference]: Finished difference Result 237756 states and 253282 transitions. [2022-07-13 12:56:06,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:06,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 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 480 [2022-07-13 12:56:06,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:06,859 INFO L225 Difference]: With dead ends: 237756 [2022-07-13 12:56:06,860 INFO L226 Difference]: Without dead ends: 131867 [2022-07-13 12:56:06,900 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 12:56:06,901 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 876 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2344 mSolverCounterSat, 739 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 3083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 739 IncrementalHoareTripleChecker+Valid, 2344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:06,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 745 Invalid, 3083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [739 Valid, 2344 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 12:56:07,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131867 states. [2022-07-13 12:56:08,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131867 to 130274. [2022-07-13 12:56:08,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130274 states, 130273 states have (on average 1.0593215785312382) internal successors, (138001), 130273 states have internal predecessors, (138001), 0 states have call successors, (0), 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 12:56:08,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130274 states to 130274 states and 138001 transitions. [2022-07-13 12:56:08,365 INFO L78 Accepts]: Start accepts. Automaton has 130274 states and 138001 transitions. Word has length 480 [2022-07-13 12:56:08,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:08,366 INFO L495 AbstractCegarLoop]: Abstraction has 130274 states and 138001 transitions. [2022-07-13 12:56:08,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 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 12:56:08,366 INFO L276 IsEmpty]: Start isEmpty. Operand 130274 states and 138001 transitions. [2022-07-13 12:56:08,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2022-07-13 12:56:08,372 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:08,373 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2022-07-13 12:56:08,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 12:56:08,373 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:08,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:08,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1918953708, now seen corresponding path program 1 times [2022-07-13 12:56:08,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:08,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524101368] [2022-07-13 12:56:08,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:08,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:08,713 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2022-07-13 12:56:08,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:08,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524101368] [2022-07-13 12:56:08,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524101368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:08,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:56:08,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:56:08,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603121564] [2022-07-13 12:56:08,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:08,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:08,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:08,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:08,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:08,716 INFO L87 Difference]: Start difference. First operand 130274 states and 138001 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 0 states have call successors, (0), 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 12:56:10,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:10,687 INFO L93 Difference]: Finished difference Result 245571 states and 260681 transitions. [2022-07-13 12:56:10,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:10,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 0 states have call successors, (0), 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 497 [2022-07-13 12:56:10,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:10,817 INFO L225 Difference]: With dead ends: 245571 [2022-07-13 12:56:10,817 INFO L226 Difference]: Without dead ends: 129471 [2022-07-13 12:56:10,853 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 12:56:10,854 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 1610 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:10,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 294 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 12:56:10,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129471 states. [2022-07-13 12:56:12,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129471 to 129470. [2022-07-13 12:56:12,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129470 states, 129469 states have (on average 1.0591415705690166) internal successors, (137126), 129469 states have internal predecessors, (137126), 0 states have call successors, (0), 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 12:56:12,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129470 states to 129470 states and 137126 transitions. [2022-07-13 12:56:12,313 INFO L78 Accepts]: Start accepts. Automaton has 129470 states and 137126 transitions. Word has length 497 [2022-07-13 12:56:12,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:12,313 INFO L495 AbstractCegarLoop]: Abstraction has 129470 states and 137126 transitions. [2022-07-13 12:56:12,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 0 states have call successors, (0), 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 12:56:12,313 INFO L276 IsEmpty]: Start isEmpty. Operand 129470 states and 137126 transitions. [2022-07-13 12:56:12,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2022-07-13 12:56:12,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:12,320 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-13 12:56:12,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 12:56:12,320 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:12,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:12,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1426448072, now seen corresponding path program 1 times [2022-07-13 12:56:12,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:12,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423246815] [2022-07-13 12:56:12,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:12,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:12,430 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 632 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-07-13 12:56:12,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:12,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423246815] [2022-07-13 12:56:12,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423246815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:12,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:56:12,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:56:12,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708225686] [2022-07-13 12:56:12,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:12,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:12,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:12,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:12,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:12,433 INFO L87 Difference]: Start difference. First operand 129470 states and 137126 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 12:56:15,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:15,697 INFO L93 Difference]: Finished difference Result 258954 states and 274253 transitions. [2022-07-13 12:56:15,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:15,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 499 [2022-07-13 12:56:15,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:15,837 INFO L225 Difference]: With dead ends: 258954 [2022-07-13 12:56:15,837 INFO L226 Difference]: Without dead ends: 128699 [2022-07-13 12:56:15,889 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 12:56:15,890 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 791 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2438 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 2438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:15,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1800 Invalid, 2842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 2438 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 12:56:15,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128699 states. [2022-07-13 12:56:17,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128699 to 127107. [2022-07-13 12:56:17,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127107 states, 127106 states have (on average 1.046016710462134) internal successors, (132955), 127106 states have internal predecessors, (132955), 0 states have call successors, (0), 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 12:56:17,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127107 states to 127107 states and 132955 transitions. [2022-07-13 12:56:17,430 INFO L78 Accepts]: Start accepts. Automaton has 127107 states and 132955 transitions. Word has length 499 [2022-07-13 12:56:17,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:17,430 INFO L495 AbstractCegarLoop]: Abstraction has 127107 states and 132955 transitions. [2022-07-13 12:56:17,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 12:56:17,430 INFO L276 IsEmpty]: Start isEmpty. Operand 127107 states and 132955 transitions. [2022-07-13 12:56:17,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2022-07-13 12:56:17,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:17,437 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2022-07-13 12:56:17,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 12:56:17,437 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:17,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:17,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1941558184, now seen corresponding path program 1 times [2022-07-13 12:56:17,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:17,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424674171] [2022-07-13 12:56:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:17,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:17,545 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 591 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2022-07-13 12:56:17,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:17,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424674171] [2022-07-13 12:56:17,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424674171] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:17,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:56:17,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:56:17,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722683976] [2022-07-13 12:56:17,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:17,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:17,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:17,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:17,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:17,548 INFO L87 Difference]: Start difference. First operand 127107 states and 132955 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 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 12:56:21,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:21,051 INFO L93 Difference]: Finished difference Result 293594 states and 308253 transitions. [2022-07-13 12:56:21,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:21,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 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 508 [2022-07-13 12:56:21,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:21,478 INFO L225 Difference]: With dead ends: 293594 [2022-07-13 12:56:21,478 INFO L226 Difference]: Without dead ends: 180661 [2022-07-13 12:56:21,500 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 12:56:21,501 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1016 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2398 mSolverCounterSat, 892 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 3290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 892 IncrementalHoareTripleChecker+Valid, 2398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:21,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 578 Invalid, 3290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [892 Valid, 2398 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-13 12:56:21,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180661 states. [2022-07-13 12:56:23,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180661 to 180657. [2022-07-13 12:56:23,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180657 states, 180656 states have (on average 1.0444491187671596) internal successors, (188686), 180656 states have internal predecessors, (188686), 0 states have call successors, (0), 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 12:56:23,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180657 states to 180657 states and 188686 transitions. [2022-07-13 12:56:23,486 INFO L78 Accepts]: Start accepts. Automaton has 180657 states and 188686 transitions. Word has length 508 [2022-07-13 12:56:23,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:23,486 INFO L495 AbstractCegarLoop]: Abstraction has 180657 states and 188686 transitions. [2022-07-13 12:56:23,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 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 12:56:23,487 INFO L276 IsEmpty]: Start isEmpty. Operand 180657 states and 188686 transitions. [2022-07-13 12:56:23,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2022-07-13 12:56:23,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:23,493 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:23,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 12:56:23,493 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:23,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:23,494 INFO L85 PathProgramCache]: Analyzing trace with hash 65508487, now seen corresponding path program 1 times [2022-07-13 12:56:23,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:23,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127915909] [2022-07-13 12:56:23,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:23,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 815 trivial. 0 not checked. [2022-07-13 12:56:23,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:23,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127915909] [2022-07-13 12:56:23,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127915909] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:23,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:56:23,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:56:23,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55475770] [2022-07-13 12:56:23,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:23,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:23,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:23,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:23,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:23,615 INFO L87 Difference]: Start difference. First operand 180657 states and 188686 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 12:56:27,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:27,980 INFO L93 Difference]: Finished difference Result 441728 states and 461822 transitions. [2022-07-13 12:56:27,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:27,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 511 [2022-07-13 12:56:27,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:28,292 INFO L225 Difference]: With dead ends: 441728 [2022-07-13 12:56:28,292 INFO L226 Difference]: Without dead ends: 261860 [2022-07-13 12:56:28,351 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 12:56:28,352 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 947 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 2885 mSolverCounterSat, 536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 3421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 2885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:28,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 787 Invalid, 3421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [536 Valid, 2885 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-13 12:56:28,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261860 states. [2022-07-13 12:56:31,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261860 to 258597. [2022-07-13 12:56:31,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258597 states, 258596 states have (on average 1.042324707265387) internal successors, (269541), 258596 states have internal predecessors, (269541), 0 states have call successors, (0), 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 12:56:31,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258597 states to 258597 states and 269541 transitions. [2022-07-13 12:56:31,425 INFO L78 Accepts]: Start accepts. Automaton has 258597 states and 269541 transitions. Word has length 511 [2022-07-13 12:56:31,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:31,426 INFO L495 AbstractCegarLoop]: Abstraction has 258597 states and 269541 transitions. [2022-07-13 12:56:31,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 12:56:31,426 INFO L276 IsEmpty]: Start isEmpty. Operand 258597 states and 269541 transitions. [2022-07-13 12:56:31,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2022-07-13 12:56:31,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:31,445 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:56:31,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 12:56:31,445 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:31,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:31,446 INFO L85 PathProgramCache]: Analyzing trace with hash 126932870, now seen corresponding path program 1 times [2022-07-13 12:56:31,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:31,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238437485] [2022-07-13 12:56:31,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:31,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:31,652 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 609 proven. 75 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-07-13 12:56:31,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:31,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238437485] [2022-07-13 12:56:31,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238437485] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 12:56:31,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623240718] [2022-07-13 12:56:31,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:31,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:56:31,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:56:31,654 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 12:56:31,655 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 12:56:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:31,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 12:56:31,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 12:56:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 747 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-13 12:56:33,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 12:56:33,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623240718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:33,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 12:56:33,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-07-13 12:56:33,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288148566] [2022-07-13 12:56:33,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:33,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 12:56:33,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:33,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 12:56:33,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 12:56:33,160 INFO L87 Difference]: Start difference. First operand 258597 states and 269541 transitions. Second operand has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 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 12:56:37,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:37,449 INFO L93 Difference]: Finished difference Result 503029 states and 524785 transitions. [2022-07-13 12:56:37,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 12:56:37,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 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 692 [2022-07-13 12:56:37,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:37,747 INFO L225 Difference]: With dead ends: 503029 [2022-07-13 12:56:37,747 INFO L226 Difference]: Without dead ends: 260178 [2022-07-13 12:56:38,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 691 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 12:56:38,182 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 2249 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 3256 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2249 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 3787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 3256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:38,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2249 Valid, 787 Invalid, 3787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 3256 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-13 12:56:38,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260178 states.