./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.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/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.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 1cf988187e51661749a7431d3b54c72cef46dbc57db121ef5e55cfa0bf7b27cc --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 19:08:33,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 19:08:33,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 19:08:33,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 19:08:33,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 19:08:33,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 19:08:33,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 19:08:33,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 19:08:33,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 19:08:33,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 19:08:33,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 19:08:33,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 19:08:33,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 19:08:33,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 19:08:33,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 19:08:33,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 19:08:33,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 19:08:33,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 19:08:33,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 19:08:33,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 19:08:33,933 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 19:08:33,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 19:08:33,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 19:08:33,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 19:08:33,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 19:08:33,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 19:08:33,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 19:08:33,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 19:08:33,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 19:08:33,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 19:08:33,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 19:08:33,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 19:08:33,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 19:08:33,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 19:08:33,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 19:08:33,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 19:08:33,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 19:08:33,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 19:08:33,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 19:08:33,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 19:08:33,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 19:08:33,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 19:08:33,951 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 19:08:33,976 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 19:08:33,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 19:08:33,976 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 19:08:33,976 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 19:08:33,977 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 19:08:33,977 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 19:08:33,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 19:08:33,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 19:08:33,978 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 19:08:33,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 19:08:33,979 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 19:08:33,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 19:08:33,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 19:08:33,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 19:08:33,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 19:08:33,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 19:08:33,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 19:08:33,980 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 19:08:33,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 19:08:33,980 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 19:08:33,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 19:08:33,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 19:08:33,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 19:08:33,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 19:08:33,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:08:33,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 19:08:33,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 19:08:33,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 19:08:33,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 19:08:33,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 19:08:33,982 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 19:08:33,982 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 19:08:33,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 19:08:33,982 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cf988187e51661749a7431d3b54c72cef46dbc57db121ef5e55cfa0bf7b27cc [2022-07-13 19:08:34,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 19:08:34,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 19:08:34,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 19:08:34,192 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 19:08:34,192 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 19:08:34,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2022-07-13 19:08:34,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d39ce3dc/6030382536894a2b91acc1016caf9b5a/FLAG9a1a5cca0 [2022-07-13 19:08:34,606 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 19:08:34,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2022-07-13 19:08:34,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d39ce3dc/6030382536894a2b91acc1016caf9b5a/FLAG9a1a5cca0 [2022-07-13 19:08:34,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d39ce3dc/6030382536894a2b91acc1016caf9b5a [2022-07-13 19:08:34,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 19:08:34,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 19:08:35,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 19:08:35,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 19:08:35,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 19:08:35,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:08:34" (1/1) ... [2022-07-13 19:08:35,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ead3099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:08:35, skipping insertion in model container [2022-07-13 19:08:35,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:08:34" (1/1) ... [2022-07-13 19:08:35,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 19:08:35,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 19:08:35,272 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/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c[13915,13928] [2022-07-13 19:08:35,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:08:35,326 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 19:08:35,438 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/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c[13915,13928] [2022-07-13 19:08:35,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:08:35,487 INFO L208 MainTranslator]: Completed translation [2022-07-13 19:08:35,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:08:35 WrapperNode [2022-07-13 19:08:35,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 19:08:35,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 19:08:35,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 19:08:35,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 19:08:35,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:08:35" (1/1) ... [2022-07-13 19:08:35,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:08:35" (1/1) ... [2022-07-13 19:08:35,577 INFO L137 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1176 [2022-07-13 19:08:35,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 19:08:35,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 19:08:35,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 19:08:35,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 19:08:35,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:08:35" (1/1) ... [2022-07-13 19:08:35,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:08:35" (1/1) ... [2022-07-13 19:08:35,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:08:35" (1/1) ... [2022-07-13 19:08:35,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:08:35" (1/1) ... [2022-07-13 19:08:35,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:08:35" (1/1) ... [2022-07-13 19:08:35,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:08:35" (1/1) ... [2022-07-13 19:08:35,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:08:35" (1/1) ... [2022-07-13 19:08:35,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 19:08:35,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 19:08:35,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 19:08:35,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 19:08:35,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:08:35" (1/1) ... [2022-07-13 19:08:35,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:08:35,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:08:35,693 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 19:08:35,709 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 19:08:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 19:08:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 19:08:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 19:08:35,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 19:08:35,805 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 19:08:35,806 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 19:08:36,520 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 19:08:36,529 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 19:08:36,531 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 19:08:36,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:08:36 BoogieIcfgContainer [2022-07-13 19:08:36,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 19:08:36,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 19:08:36,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 19:08:36,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 19:08:36,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 07:08:34" (1/3) ... [2022-07-13 19:08:36,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cbef855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:08:36, skipping insertion in model container [2022-07-13 19:08:36,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:08:35" (2/3) ... [2022-07-13 19:08:36,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cbef855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:08:36, skipping insertion in model container [2022-07-13 19:08:36,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:08:36" (3/3) ... [2022-07-13 19:08:36,541 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2022-07-13 19:08:36,550 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 19:08:36,551 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 19:08:36,601 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 19:08:36,605 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@66e576ae, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7917cfae [2022-07-13 19:08:36,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 19:08:36,609 INFO L276 IsEmpty]: Start isEmpty. Operand has 326 states, 324 states have (on average 1.6604938271604939) internal successors, (538), 325 states have internal predecessors, (538), 0 states have call successors, (0), 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 19:08:36,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-13 19:08:36,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:08:36,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:08:36,623 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:08:36,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:08:36,626 INFO L85 PathProgramCache]: Analyzing trace with hash -2137284112, now seen corresponding path program 1 times [2022-07-13 19:08:36,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:08:36,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070259614] [2022-07-13 19:08:36,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:08:36,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:08:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:08:36,881 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 19:08:36,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:08:36,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070259614] [2022-07-13 19:08:36,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070259614] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:08:36,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:08:36,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 19:08:36,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156430194] [2022-07-13 19:08:36,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:08:36,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 19:08:36,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:08:36,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 19:08:36,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 19:08:36,914 INFO L87 Difference]: Start difference. First operand has 326 states, 324 states have (on average 1.6604938271604939) internal successors, (538), 325 states have internal predecessors, (538), 0 states have call successors, (0), 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 4 states, 4 states have (on average 29.75) internal successors, (119), 4 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 19:08:37,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:08:37,037 INFO L93 Difference]: Finished difference Result 613 states and 996 transitions. [2022-07-13 19:08:37,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 19:08:37,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 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 119 [2022-07-13 19:08:37,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:08:37,048 INFO L225 Difference]: With dead ends: 613 [2022-07-13 19:08:37,048 INFO L226 Difference]: Without dead ends: 323 [2022-07-13 19:08:37,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:08:37,053 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 459 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:08:37,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 1110 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:08:37,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-07-13 19:08:37,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2022-07-13 19:08:37,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.5248447204968945) internal successors, (491), 322 states have internal predecessors, (491), 0 states have call successors, (0), 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 19:08:37,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 491 transitions. [2022-07-13 19:08:37,088 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 491 transitions. Word has length 119 [2022-07-13 19:08:37,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:08:37,089 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 491 transitions. [2022-07-13 19:08:37,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 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 19:08:37,089 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 491 transitions. [2022-07-13 19:08:37,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-13 19:08:37,091 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:08:37,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:08:37,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 19:08:37,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:08:37,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:08:37,092 INFO L85 PathProgramCache]: Analyzing trace with hash 236422477, now seen corresponding path program 1 times [2022-07-13 19:08:37,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:08:37,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288912594] [2022-07-13 19:08:37,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:08:37,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:08:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:08:37,198 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 19:08:37,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:08:37,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288912594] [2022-07-13 19:08:37,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288912594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:08:37,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:08:37,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:08:37,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952424132] [2022-07-13 19:08:37,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:08:37,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:08:37,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:08:37,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:08:37,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:08:37,202 INFO L87 Difference]: Start difference. First operand 323 states and 491 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 19:08:37,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:08:37,234 INFO L93 Difference]: Finished difference Result 754 states and 1180 transitions. [2022-07-13 19:08:37,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:08:37,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-07-13 19:08:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:08:37,237 INFO L225 Difference]: With dead ends: 754 [2022-07-13 19:08:37,237 INFO L226 Difference]: Without dead ends: 492 [2022-07-13 19:08:37,238 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 19:08:37,239 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 309 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:08:37,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 874 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:08:37,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-07-13 19:08:37,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 490. [2022-07-13 19:08:37,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.5460122699386503) internal successors, (756), 489 states have internal predecessors, (756), 0 states have call successors, (0), 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 19:08:37,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 756 transitions. [2022-07-13 19:08:37,259 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 756 transitions. Word has length 158 [2022-07-13 19:08:37,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:08:37,260 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 756 transitions. [2022-07-13 19:08:37,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 19:08:37,260 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 756 transitions. [2022-07-13 19:08:37,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-13 19:08:37,263 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:08:37,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:08:37,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 19:08:37,263 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:08:37,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:08:37,264 INFO L85 PathProgramCache]: Analyzing trace with hash -629719765, now seen corresponding path program 1 times [2022-07-13 19:08:37,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:08:37,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391881080] [2022-07-13 19:08:37,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:08:37,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:08:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:08:37,329 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 19:08:37,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:08:37,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391881080] [2022-07-13 19:08:37,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391881080] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:08:37,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:08:37,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:08:37,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897542029] [2022-07-13 19:08:37,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:08:37,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:08:37,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:08:37,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:08:37,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:08:37,332 INFO L87 Difference]: Start difference. First operand 490 states and 756 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 19:08:37,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:08:37,372 INFO L93 Difference]: Finished difference Result 1217 states and 1917 transitions. [2022-07-13 19:08:37,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:08:37,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2022-07-13 19:08:37,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:08:37,375 INFO L225 Difference]: With dead ends: 1217 [2022-07-13 19:08:37,375 INFO L226 Difference]: Without dead ends: 794 [2022-07-13 19:08:37,376 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 19:08:37,377 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 295 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:08:37,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 952 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:08:37,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-07-13 19:08:37,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 792. [2022-07-13 19:08:37,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 791 states have (on average 1.5600505689001265) internal successors, (1234), 791 states have internal predecessors, (1234), 0 states have call successors, (0), 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 19:08:37,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1234 transitions. [2022-07-13 19:08:37,405 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1234 transitions. Word has length 160 [2022-07-13 19:08:37,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:08:37,436 INFO L495 AbstractCegarLoop]: Abstraction has 792 states and 1234 transitions. [2022-07-13 19:08:37,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 19:08:37,436 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1234 transitions. [2022-07-13 19:08:37,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-13 19:08:37,439 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:08:37,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:08:37,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 19:08:37,439 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:08:37,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:08:37,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1119650555, now seen corresponding path program 1 times [2022-07-13 19:08:37,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:08:37,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673353564] [2022-07-13 19:08:37,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:08:37,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:08:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:08:37,512 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 19:08:37,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:08:37,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673353564] [2022-07-13 19:08:37,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673353564] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:08:37,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:08:37,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:08:37,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949410133] [2022-07-13 19:08:37,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:08:37,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:08:37,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:08:37,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:08:37,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:08:37,514 INFO L87 Difference]: Start difference. First operand 792 states and 1234 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 19:08:37,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:08:37,572 INFO L93 Difference]: Finished difference Result 2049 states and 3235 transitions. [2022-07-13 19:08:37,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:08:37,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2022-07-13 19:08:37,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:08:37,579 INFO L225 Difference]: With dead ends: 2049 [2022-07-13 19:08:37,579 INFO L226 Difference]: Without dead ends: 1330 [2022-07-13 19:08:37,581 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 19:08:37,589 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 283 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:08:37,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 834 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:08:37,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2022-07-13 19:08:37,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1328. [2022-07-13 19:08:37,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1327 states have (on average 1.5659382064807836) internal successors, (2078), 1327 states have internal predecessors, (2078), 0 states have call successors, (0), 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 19:08:37,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 2078 transitions. [2022-07-13 19:08:37,644 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 2078 transitions. Word has length 162 [2022-07-13 19:08:37,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:08:37,644 INFO L495 AbstractCegarLoop]: Abstraction has 1328 states and 2078 transitions. [2022-07-13 19:08:37,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 19:08:37,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 2078 transitions. [2022-07-13 19:08:37,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-13 19:08:37,647 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:08:37,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:08:37,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 19:08:37,647 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:08:37,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:08:37,648 INFO L85 PathProgramCache]: Analyzing trace with hash -679886853, now seen corresponding path program 1 times [2022-07-13 19:08:37,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:08:37,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855125354] [2022-07-13 19:08:37,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:08:37,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:08:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:08:37,774 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 19:08:37,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:08:37,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855125354] [2022-07-13 19:08:37,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855125354] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:08:37,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:08:37,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:08:37,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038958867] [2022-07-13 19:08:37,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:08:37,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:08:37,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:08:37,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:08:37,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:08:37,780 INFO L87 Difference]: Start difference. First operand 1328 states and 2078 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 19:08:37,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:08:37,884 INFO L93 Difference]: Finished difference Result 3511 states and 5535 transitions. [2022-07-13 19:08:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:08:37,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2022-07-13 19:08:37,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:08:37,892 INFO L225 Difference]: With dead ends: 3511 [2022-07-13 19:08:37,892 INFO L226 Difference]: Without dead ends: 2262 [2022-07-13 19:08:37,894 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 19:08:37,897 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 270 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:08:37,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 814 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:08:37,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2022-07-13 19:08:38,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 2260. [2022-07-13 19:08:38,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2260 states, 2259 states have (on average 1.5644090305444887) internal successors, (3534), 2259 states have internal predecessors, (3534), 0 states have call successors, (0), 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 19:08:38,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2260 states to 2260 states and 3534 transitions. [2022-07-13 19:08:38,030 INFO L78 Accepts]: Start accepts. Automaton has 2260 states and 3534 transitions. Word has length 164 [2022-07-13 19:08:38,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:08:38,030 INFO L495 AbstractCegarLoop]: Abstraction has 2260 states and 3534 transitions. [2022-07-13 19:08:38,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 19:08:38,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2260 states and 3534 transitions. [2022-07-13 19:08:38,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-13 19:08:38,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:08:38,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:08:38,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 19:08:38,038 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:08:38,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:08:38,038 INFO L85 PathProgramCache]: Analyzing trace with hash -416723443, now seen corresponding path program 1 times [2022-07-13 19:08:38,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:08:38,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260108579] [2022-07-13 19:08:38,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:08:38,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:08:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:08:38,091 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 19:08:38,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:08:38,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260108579] [2022-07-13 19:08:38,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260108579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:08:38,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:08:38,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:08:38,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639086001] [2022-07-13 19:08:38,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:08:38,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:08:38,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:08:38,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:08:38,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:08:38,094 INFO L87 Difference]: Start difference. First operand 2260 states and 3534 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 19:08:38,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:08:38,274 INFO L93 Difference]: Finished difference Result 6017 states and 9439 transitions. [2022-07-13 19:08:38,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:08:38,274 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 166 [2022-07-13 19:08:38,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:08:38,285 INFO L225 Difference]: With dead ends: 6017 [2022-07-13 19:08:38,285 INFO L226 Difference]: Without dead ends: 3842 [2022-07-13 19:08:38,288 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 19:08:38,288 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 256 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:08:38,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 892 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:08:38,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2022-07-13 19:08:38,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 3840. [2022-07-13 19:08:38,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3840 states, 3839 states have (on average 1.5561344100026049) internal successors, (5974), 3839 states have internal predecessors, (5974), 0 states have call successors, (0), 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 19:08:38,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3840 states to 3840 states and 5974 transitions. [2022-07-13 19:08:38,476 INFO L78 Accepts]: Start accepts. Automaton has 3840 states and 5974 transitions. Word has length 166 [2022-07-13 19:08:38,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:08:38,477 INFO L495 AbstractCegarLoop]: Abstraction has 3840 states and 5974 transitions. [2022-07-13 19:08:38,477 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 19:08:38,477 INFO L276 IsEmpty]: Start isEmpty. Operand 3840 states and 5974 transitions. [2022-07-13 19:08:38,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 19:08:38,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:08:38,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:08:38,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 19:08:38,484 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:08:38,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:08:38,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1890921675, now seen corresponding path program 1 times [2022-07-13 19:08:38,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:08:38,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968151749] [2022-07-13 19:08:38,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:08:38,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:08:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:08:38,570 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 19:08:38,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:08:38,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968151749] [2022-07-13 19:08:38,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968151749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:08:38,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:08:38,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 19:08:38,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250755339] [2022-07-13 19:08:38,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:08:38,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 19:08:38,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:08:38,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 19:08:38,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:08:38,573 INFO L87 Difference]: Start difference. First operand 3840 states and 5974 transitions. Second operand has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 0 states have call successors, (0), 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 19:08:40,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:08:40,777 INFO L93 Difference]: Finished difference Result 39953 states and 62069 transitions. [2022-07-13 19:08:40,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 19:08:40,778 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2022-07-13 19:08:40,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:08:40,872 INFO L225 Difference]: With dead ends: 39953 [2022-07-13 19:08:40,872 INFO L226 Difference]: Without dead ends: 36204 [2022-07-13 19:08:40,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-07-13 19:08:40,890 INFO L413 NwaCegarLoop]: 1110 mSDtfsCounter, 4539 mSDsluCounter, 6426 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4539 SdHoareTripleChecker+Valid, 7536 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 19:08:40,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4539 Valid, 7536 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 19:08:40,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36204 states. [2022-07-13 19:08:41,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36204 to 7624. [2022-07-13 19:08:41,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7624 states, 7623 states have (on average 1.5337793519611702) internal successors, (11692), 7623 states have internal predecessors, (11692), 0 states have call successors, (0), 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 19:08:41,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7624 states to 7624 states and 11692 transitions. [2022-07-13 19:08:41,802 INFO L78 Accepts]: Start accepts. Automaton has 7624 states and 11692 transitions. Word has length 168 [2022-07-13 19:08:41,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:08:41,803 INFO L495 AbstractCegarLoop]: Abstraction has 7624 states and 11692 transitions. [2022-07-13 19:08:41,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 0 states have call successors, (0), 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 19:08:41,803 INFO L276 IsEmpty]: Start isEmpty. Operand 7624 states and 11692 transitions. [2022-07-13 19:08:41,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-13 19:08:41,815 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:08:41,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:08:41,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 19:08:41,815 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:08:41,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:08:41,816 INFO L85 PathProgramCache]: Analyzing trace with hash -938279451, now seen corresponding path program 1 times [2022-07-13 19:08:41,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:08:41,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716799970] [2022-07-13 19:08:41,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:08:41,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:08:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:08:41,851 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 19:08:41,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:08:41,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716799970] [2022-07-13 19:08:41,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716799970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:08:41,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:08:41,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:08:41,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227031787] [2022-07-13 19:08:41,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:08:41,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:08:41,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:08:41,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:08:41,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:08:41,854 INFO L87 Difference]: Start difference. First operand 7624 states and 11692 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 19:08:42,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:08:42,715 INFO L93 Difference]: Finished difference Result 21275 states and 32593 transitions. [2022-07-13 19:08:42,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:08:42,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2022-07-13 19:08:42,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:08:42,737 INFO L225 Difference]: With dead ends: 21275 [2022-07-13 19:08:42,738 INFO L226 Difference]: Without dead ends: 13700 [2022-07-13 19:08:42,747 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 19:08:42,747 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 303 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:08:42,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 1083 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:08:42,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13700 states. [2022-07-13 19:08:43,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13700 to 13698. [2022-07-13 19:08:43,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13698 states, 13697 states have (on average 1.5202599109294006) internal successors, (20823), 13697 states have internal predecessors, (20823), 0 states have call successors, (0), 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 19:08:43,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13698 states to 13698 states and 20823 transitions. [2022-07-13 19:08:43,955 INFO L78 Accepts]: Start accepts. Automaton has 13698 states and 20823 transitions. Word has length 171 [2022-07-13 19:08:43,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:08:43,955 INFO L495 AbstractCegarLoop]: Abstraction has 13698 states and 20823 transitions. [2022-07-13 19:08:43,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 19:08:43,955 INFO L276 IsEmpty]: Start isEmpty. Operand 13698 states and 20823 transitions. [2022-07-13 19:08:43,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-13 19:08:43,978 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:08:43,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:08:43,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 19:08:43,979 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:08:43,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:08:43,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1870536310, now seen corresponding path program 1 times [2022-07-13 19:08:43,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:08:43,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828563766] [2022-07-13 19:08:43,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:08:43,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:08:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:08:44,137 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 19:08:44,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:08:44,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828563766] [2022-07-13 19:08:44,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828563766] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:08:44,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:08:44,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 19:08:44,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992115272] [2022-07-13 19:08:44,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:08:44,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 19:08:44,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:08:44,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 19:08:44,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:08:44,140 INFO L87 Difference]: Start difference. First operand 13698 states and 20823 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 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 19:08:45,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:08:45,342 INFO L93 Difference]: Finished difference Result 27313 states and 41547 transitions. [2022-07-13 19:08:45,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 19:08:45,352 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2022-07-13 19:08:45,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:08:45,369 INFO L225 Difference]: With dead ends: 27313 [2022-07-13 19:08:45,369 INFO L226 Difference]: Without dead ends: 13700 [2022-07-13 19:08:45,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-07-13 19:08:45,383 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 966 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 19:08:45,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 2084 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 19:08:45,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13700 states. [2022-07-13 19:08:46,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13700 to 13698. [2022-07-13 19:08:46,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13698 states, 13697 states have (on average 1.5061692341388626) internal successors, (20630), 13697 states have internal predecessors, (20630), 0 states have call successors, (0), 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 19:08:46,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13698 states to 13698 states and 20630 transitions. [2022-07-13 19:08:46,352 INFO L78 Accepts]: Start accepts. Automaton has 13698 states and 20630 transitions. Word has length 172 [2022-07-13 19:08:46,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:08:46,353 INFO L495 AbstractCegarLoop]: Abstraction has 13698 states and 20630 transitions. [2022-07-13 19:08:46,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 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 19:08:46,353 INFO L276 IsEmpty]: Start isEmpty. Operand 13698 states and 20630 transitions. [2022-07-13 19:08:46,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-13 19:08:46,380 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:08:46,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:08:46,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 19:08:46,381 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:08:46,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:08:46,384 INFO L85 PathProgramCache]: Analyzing trace with hash 380481047, now seen corresponding path program 1 times [2022-07-13 19:08:46,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:08:46,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700547012] [2022-07-13 19:08:46,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:08:46,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:08:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:08:46,448 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 19:08:46,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:08:46,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700547012] [2022-07-13 19:08:46,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700547012] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:08:46,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:08:46,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:08:46,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371505254] [2022-07-13 19:08:46,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:08:46,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:08:46,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:08:46,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:08:46,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:08:46,450 INFO L87 Difference]: Start difference. First operand 13698 states and 20630 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 19:08:48,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:08:48,098 INFO L93 Difference]: Finished difference Result 32651 states and 49121 transitions. [2022-07-13 19:08:48,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:08:48,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2022-07-13 19:08:48,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:08:48,126 INFO L225 Difference]: With dead ends: 32651 [2022-07-13 19:08:48,126 INFO L226 Difference]: Without dead ends: 19036 [2022-07-13 19:08:48,145 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 19:08:48,146 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 320 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:08:48,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 727 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:08:48,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19036 states. [2022-07-13 19:08:49,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19036 to 18970. [2022-07-13 19:08:49,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18970 states, 18969 states have (on average 1.4816279192366493) internal successors, (28105), 18969 states have internal predecessors, (28105), 0 states have call successors, (0), 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 19:08:49,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18970 states to 18970 states and 28105 transitions. [2022-07-13 19:08:49,697 INFO L78 Accepts]: Start accepts. Automaton has 18970 states and 28105 transitions. Word has length 172 [2022-07-13 19:08:49,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:08:49,697 INFO L495 AbstractCegarLoop]: Abstraction has 18970 states and 28105 transitions. [2022-07-13 19:08:49,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 19:08:49,698 INFO L276 IsEmpty]: Start isEmpty. Operand 18970 states and 28105 transitions. [2022-07-13 19:08:49,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-13 19:08:49,732 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:08:49,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:08:49,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 19:08:49,732 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:08:49,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:08:49,733 INFO L85 PathProgramCache]: Analyzing trace with hash 257757422, now seen corresponding path program 1 times [2022-07-13 19:08:49,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:08:49,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142433270] [2022-07-13 19:08:49,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:08:49,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:08:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:08:49,780 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 19:08:49,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:08:49,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142433270] [2022-07-13 19:08:49,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142433270] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:08:49,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:08:49,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:08:49,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476976129] [2022-07-13 19:08:49,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:08:49,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:08:49,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:08:49,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:08:49,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:08:49,783 INFO L87 Difference]: Start difference. First operand 18970 states and 28105 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 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 19:08:52,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:08:52,563 INFO L93 Difference]: Finished difference Result 55252 states and 81722 transitions. [2022-07-13 19:08:52,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:08:52,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2022-07-13 19:08:52,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:08:52,617 INFO L225 Difference]: With dead ends: 55252 [2022-07-13 19:08:52,618 INFO L226 Difference]: Without dead ends: 37637 [2022-07-13 19:08:52,638 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 19:08:52,639 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 336 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 19:08:52,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 516 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 19:08:52,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37637 states. [2022-07-13 19:08:56,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37637 to 37635. [2022-07-13 19:08:56,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37635 states, 37634 states have (on average 1.4718605516288463) internal successors, (55392), 37634 states have internal predecessors, (55392), 0 states have call successors, (0), 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 19:08:56,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37635 states to 37635 states and 55392 transitions. [2022-07-13 19:08:56,145 INFO L78 Accepts]: Start accepts. Automaton has 37635 states and 55392 transitions. Word has length 173 [2022-07-13 19:08:56,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:08:56,145 INFO L495 AbstractCegarLoop]: Abstraction has 37635 states and 55392 transitions. [2022-07-13 19:08:56,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 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 19:08:56,146 INFO L276 IsEmpty]: Start isEmpty. Operand 37635 states and 55392 transitions. [2022-07-13 19:08:56,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-13 19:08:56,196 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:08:56,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:08:56,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 19:08:56,197 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:08:56,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:08:56,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1541809188, now seen corresponding path program 1 times [2022-07-13 19:08:56,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:08:56,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808536360] [2022-07-13 19:08:56,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:08:56,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:08:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:08:56,281 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 19:08:56,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:08:56,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808536360] [2022-07-13 19:08:56,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808536360] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:08:56,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:08:56,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 19:08:56,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006973419] [2022-07-13 19:08:56,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:08:56,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 19:08:56,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:08:56,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 19:08:56,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:08:56,284 INFO L87 Difference]: Start difference. First operand 37635 states and 55392 transitions. Second operand has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 0 states have call successors, (0), 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 19:09:11,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:09:11,215 INFO L93 Difference]: Finished difference Result 204364 states and 299608 transitions. [2022-07-13 19:09:11,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 19:09:11,216 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2022-07-13 19:09:11,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:09:11,545 INFO L225 Difference]: With dead ends: 204364 [2022-07-13 19:09:11,546 INFO L226 Difference]: Without dead ends: 182666 [2022-07-13 19:09:11,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-13 19:09:11,606 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 3417 mSDsluCounter, 2300 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3417 SdHoareTripleChecker+Valid, 3276 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 19:09:11,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3417 Valid, 3276 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 19:09:11,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182666 states. [2022-07-13 19:09:19,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182666 to 69790. [2022-07-13 19:09:19,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69790 states, 69789 states have (on average 1.4621931823066672) internal successors, (102045), 69789 states have internal predecessors, (102045), 0 states have call successors, (0), 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 19:09:19,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69790 states to 69790 states and 102045 transitions. [2022-07-13 19:09:19,762 INFO L78 Accepts]: Start accepts. Automaton has 69790 states and 102045 transitions. Word has length 173 [2022-07-13 19:09:19,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:09:19,763 INFO L495 AbstractCegarLoop]: Abstraction has 69790 states and 102045 transitions. [2022-07-13 19:09:19,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 0 states have call successors, (0), 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 19:09:19,764 INFO L276 IsEmpty]: Start isEmpty. Operand 69790 states and 102045 transitions. [2022-07-13 19:09:19,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-13 19:09:19,877 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:09:19,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:09:19,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 19:09:19,878 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:09:19,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:09:19,878 INFO L85 PathProgramCache]: Analyzing trace with hash -629339990, now seen corresponding path program 1 times [2022-07-13 19:09:19,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:09:19,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986361343] [2022-07-13 19:09:19,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:09:19,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:09:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:09:19,965 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 19:09:19,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:09:19,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986361343] [2022-07-13 19:09:19,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986361343] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:09:19,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:09:19,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 19:09:19,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483909914] [2022-07-13 19:09:19,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:09:19,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 19:09:19,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:09:19,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 19:09:19,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:09:19,967 INFO L87 Difference]: Start difference. First operand 69790 states and 102045 transitions. Second operand has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)