./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.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 1fd92a9fd772101c63f3ecfbb0edb55e50fbfbad037a68e9b6ad137393c8d528 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:29:15,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:29:15,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:29:15,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:29:15,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:29:15,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:29:15,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:29:15,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:29:15,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:29:15,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:29:15,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:29:15,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:29:15,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:29:15,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:29:15,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:29:15,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:29:15,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:29:15,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:29:15,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:29:15,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:29:15,461 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:29:15,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:29:15,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:29:15,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:29:15,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:29:15,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:29:15,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:29:15,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:29:15,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:29:15,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:29:15,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:29:15,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:29:15,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:29:15,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:29:15,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:29:15,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:29:15,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:29:15,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:29:15,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:29:15,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:29:15,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:29:15,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:29:15,487 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:29:15,510 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:29:15,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:29:15,511 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:29:15,511 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:29:15,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:29:15,512 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:29:15,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:29:15,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:29:15,513 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:29:15,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:29:15,514 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:29:15,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:29:15,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:29:15,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:29:15,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:29:15,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:29:15,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:29:15,515 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:29:15,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:29:15,515 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:29:15,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:29:15,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:29:15,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:29:15,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:29:15,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:29:15,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:29:15,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:29:15,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:29:15,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:29:15,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:29:15,517 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:29:15,517 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:29:15,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:29:15,518 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fd92a9fd772101c63f3ecfbb0edb55e50fbfbad037a68e9b6ad137393c8d528 [2022-07-21 05:29:15,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:29:15,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:29:15,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:29:15,816 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:29:15,826 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:29:15,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c [2022-07-21 05:29:15,870 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7da0d7731/0bb668c581b844fdba3ffa1fa25d569e/FLAG97c4c1a50 [2022-07-21 05:29:16,333 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:29:16,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c [2022-07-21 05:29:16,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7da0d7731/0bb668c581b844fdba3ffa1fa25d569e/FLAG97c4c1a50 [2022-07-21 05:29:16,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7da0d7731/0bb668c581b844fdba3ffa1fa25d569e [2022-07-21 05:29:16,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:29:16,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:29:16,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:29:16,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:29:16,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:29:16,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:29:16" (1/1) ... [2022-07-21 05:29:16,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7443372c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:16, skipping insertion in model container [2022-07-21 05:29:16,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:29:16" (1/1) ... [2022-07-21 05:29:16,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:29:16,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:29:16,742 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/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c[55771,55784] [2022-07-21 05:29:16,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:29:16,753 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:29:16,842 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/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c[55771,55784] [2022-07-21 05:29:16,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:29:16,853 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:29:16,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:16 WrapperNode [2022-07-21 05:29:16,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:29:16,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:29:16,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:29:16,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:29:16,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:16" (1/1) ... [2022-07-21 05:29:16,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:16" (1/1) ... [2022-07-21 05:29:16,957 INFO L137 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 2091 [2022-07-21 05:29:16,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:29:16,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:29:16,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:29:16,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:29:16,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:16" (1/1) ... [2022-07-21 05:29:16,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:16" (1/1) ... [2022-07-21 05:29:16,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:16" (1/1) ... [2022-07-21 05:29:16,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:16" (1/1) ... [2022-07-21 05:29:16,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:16" (1/1) ... [2022-07-21 05:29:17,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:16" (1/1) ... [2022-07-21 05:29:17,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:16" (1/1) ... [2022-07-21 05:29:17,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:29:17,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:29:17,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:29:17,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:29:17,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:16" (1/1) ... [2022-07-21 05:29:17,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:29:17,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:29:17,051 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 05:29:17,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 05:29:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:29:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:29:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:29:17,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:29:17,291 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:29:17,303 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:29:18,424 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:29:18,434 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:29:18,434 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 05:29:18,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:29:18 BoogieIcfgContainer [2022-07-21 05:29:18,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:29:18,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:29:18,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:29:18,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:29:18,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:29:16" (1/3) ... [2022-07-21 05:29:18,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82b8a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:29:18, skipping insertion in model container [2022-07-21 05:29:18,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:16" (2/3) ... [2022-07-21 05:29:18,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82b8a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:29:18, skipping insertion in model container [2022-07-21 05:29:18,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:29:18" (3/3) ... [2022-07-21 05:29:18,443 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c [2022-07-21 05:29:18,458 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:29:18,458 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:29:18,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:29:18,518 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@2d9b909, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2cd3dd48 [2022-07-21 05:29:18,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:29:18,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 716 states, 714 states have (on average 1.8459383753501402) internal successors, (1318), 715 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:18,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-21 05:29:18,562 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:29:18,563 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] [2022-07-21 05:29:18,563 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:29:18,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:29:18,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1447219949, now seen corresponding path program 1 times [2022-07-21 05:29:18,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:29:18,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003485916] [2022-07-21 05:29:18,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:29:18,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:29:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:29:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:29:19,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:29:19,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003485916] [2022-07-21 05:29:19,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003485916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:29:19,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:29:19,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:29:19,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211418404] [2022-07-21 05:29:19,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:29:19,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:29:19,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:29:19,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:29:19,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:29:19,092 INFO L87 Difference]: Start difference. First operand has 716 states, 714 states have (on average 1.8459383753501402) internal successors, (1318), 715 states have internal predecessors, (1318), 0 states have call successors, (0), 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 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:19,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:29:19,219 INFO L93 Difference]: Finished difference Result 905 states and 1644 transitions. [2022-07-21 05:29:19,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:29:19,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2022-07-21 05:29:19,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:29:19,240 INFO L225 Difference]: With dead ends: 905 [2022-07-21 05:29:19,243 INFO L226 Difference]: Without dead ends: 712 [2022-07-21 05:29:19,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:29:19,251 INFO L413 NwaCegarLoop]: 1313 mSDtfsCounter, 3 mSDsluCounter, 3891 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5204 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:29:19,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5204 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:29:19,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-07-21 05:29:19,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 712. [2022-07-21 05:29:19,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 1.780590717299578) internal successors, (1266), 711 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:19,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1266 transitions. [2022-07-21 05:29:19,330 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1266 transitions. Word has length 153 [2022-07-21 05:29:19,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:29:19,331 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 1266 transitions. [2022-07-21 05:29:19,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:19,332 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1266 transitions. [2022-07-21 05:29:19,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-07-21 05:29:19,350 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:29:19,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:29:19,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:29:19,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:29:19,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:29:19,352 INFO L85 PathProgramCache]: Analyzing trace with hash 225889611, now seen corresponding path program 1 times [2022-07-21 05:29:19,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:29:19,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284933686] [2022-07-21 05:29:19,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:29:19,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:29:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:29:19,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:29:19,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:29:19,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284933686] [2022-07-21 05:29:19,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284933686] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:29:19,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:29:19,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:29:19,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204933440] [2022-07-21 05:29:19,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:29:19,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:29:19,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:29:19,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:29:19,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:29:19,514 INFO L87 Difference]: Start difference. First operand 712 states and 1266 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:19,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:29:19,555 INFO L93 Difference]: Finished difference Result 1060 states and 1870 transitions. [2022-07-21 05:29:19,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:29:19,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 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 197 [2022-07-21 05:29:19,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:29:19,562 INFO L225 Difference]: With dead ends: 1060 [2022-07-21 05:29:19,562 INFO L226 Difference]: Without dead ends: 879 [2022-07-21 05:29:19,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:29:19,569 INFO L413 NwaCegarLoop]: 1265 mSDtfsCounter, 281 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:29:19,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 2482 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:29:19,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2022-07-21 05:29:19,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2022-07-21 05:29:19,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 876 states have (on average 1.7682648401826484) internal successors, (1549), 876 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:19,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1549 transitions. [2022-07-21 05:29:19,604 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1549 transitions. Word has length 197 [2022-07-21 05:29:19,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:29:19,605 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1549 transitions. [2022-07-21 05:29:19,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:19,606 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1549 transitions. [2022-07-21 05:29:19,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-07-21 05:29:19,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:29:19,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:29:19,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:29:19,612 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:29:19,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:29:19,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1437816141, now seen corresponding path program 1 times [2022-07-21 05:29:19,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:29:19,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161665739] [2022-07-21 05:29:19,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:29:19,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:29:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:29:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:29:19,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:29:19,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161665739] [2022-07-21 05:29:19,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161665739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:29:19,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:29:19,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:29:19,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969794439] [2022-07-21 05:29:19,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:29:19,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:29:19,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:29:19,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:29:19,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:29:19,730 INFO L87 Difference]: Start difference. First operand 877 states and 1549 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:19,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:29:19,757 INFO L93 Difference]: Finished difference Result 1545 states and 2701 transitions. [2022-07-21 05:29:19,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:29:19,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2022-07-21 05:29:19,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:29:19,762 INFO L225 Difference]: With dead ends: 1545 [2022-07-21 05:29:19,762 INFO L226 Difference]: Without dead ends: 1199 [2022-07-21 05:29:19,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:29:19,765 INFO L413 NwaCegarLoop]: 1264 mSDtfsCounter, 281 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:29:19,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 2490 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:29:19,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2022-07-21 05:29:19,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1197. [2022-07-21 05:29:19,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 1196 states have (on average 1.7558528428093645) internal successors, (2100), 1196 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:19,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 2100 transitions. [2022-07-21 05:29:19,812 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 2100 transitions. Word has length 201 [2022-07-21 05:29:19,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:29:19,813 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 2100 transitions. [2022-07-21 05:29:19,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:19,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 2100 transitions. [2022-07-21 05:29:19,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-21 05:29:19,816 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:29:19,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:29:19,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:29:19,816 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:29:19,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:29:19,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1222890533, now seen corresponding path program 1 times [2022-07-21 05:29:19,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:29:19,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434524429] [2022-07-21 05:29:19,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:29:19,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:29:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:29:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:29:19,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:29:19,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434524429] [2022-07-21 05:29:19,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434524429] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:29:19,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:29:19,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:29:19,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128090439] [2022-07-21 05:29:19,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:29:19,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:29:19,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:29:19,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:29:19,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:29:19,902 INFO L87 Difference]: Start difference. First operand 1197 states and 2100 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:19,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:29:19,936 INFO L93 Difference]: Finished difference Result 2481 states and 4310 transitions. [2022-07-21 05:29:19,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:29:19,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 205 [2022-07-21 05:29:19,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:29:19,943 INFO L225 Difference]: With dead ends: 2481 [2022-07-21 05:29:19,943 INFO L226 Difference]: Without dead ends: 1815 [2022-07-21 05:29:19,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:29:19,951 INFO L413 NwaCegarLoop]: 1264 mSDtfsCounter, 273 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:29:19,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 2491 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:29:19,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2022-07-21 05:29:19,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1813. [2022-07-21 05:29:20,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 1.7417218543046358) internal successors, (3156), 1812 states have internal predecessors, (3156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:20,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 3156 transitions. [2022-07-21 05:29:20,008 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 3156 transitions. Word has length 205 [2022-07-21 05:29:20,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:29:20,008 INFO L495 AbstractCegarLoop]: Abstraction has 1813 states and 3156 transitions. [2022-07-21 05:29:20,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:20,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 3156 transitions. [2022-07-21 05:29:20,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-07-21 05:29:20,012 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:29:20,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:29:20,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:29:20,013 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:29:20,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:29:20,014 INFO L85 PathProgramCache]: Analyzing trace with hash 930042051, now seen corresponding path program 1 times [2022-07-21 05:29:20,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:29:20,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792724430] [2022-07-21 05:29:20,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:29:20,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:29:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:29:20,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:29:20,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:29:20,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792724430] [2022-07-21 05:29:20,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792724430] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:29:20,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:29:20,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:29:20,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175832869] [2022-07-21 05:29:20,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:29:20,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:29:20,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:29:20,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:29:20,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:29:20,096 INFO L87 Difference]: Start difference. First operand 1813 states and 3156 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:20,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:29:20,138 INFO L93 Difference]: Finished difference Result 4281 states and 7390 transitions. [2022-07-21 05:29:20,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:29:20,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2022-07-21 05:29:20,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:29:20,147 INFO L225 Difference]: With dead ends: 4281 [2022-07-21 05:29:20,148 INFO L226 Difference]: Without dead ends: 2999 [2022-07-21 05:29:20,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:29:20,150 INFO L413 NwaCegarLoop]: 1264 mSDtfsCounter, 265 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 2492 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:29:20,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 2492 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:29:20,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2022-07-21 05:29:20,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 2997. [2022-07-21 05:29:20,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2997 states, 2996 states have (on average 1.7276368491321763) internal successors, (5176), 2996 states have internal predecessors, (5176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:20,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2997 states to 2997 states and 5176 transitions. [2022-07-21 05:29:20,227 INFO L78 Accepts]: Start accepts. Automaton has 2997 states and 5176 transitions. Word has length 209 [2022-07-21 05:29:20,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:29:20,229 INFO L495 AbstractCegarLoop]: Abstraction has 2997 states and 5176 transitions. [2022-07-21 05:29:20,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:20,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2997 states and 5176 transitions. [2022-07-21 05:29:20,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-21 05:29:20,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:29:20,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:29:20,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 05:29:20,236 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:29:20,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:29:20,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1514137237, now seen corresponding path program 1 times [2022-07-21 05:29:20,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:29:20,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445042704] [2022-07-21 05:29:20,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:29:20,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:29:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:29:20,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:29:20,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:29:20,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445042704] [2022-07-21 05:29:20,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445042704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:29:20,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:29:20,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:29:20,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770095557] [2022-07-21 05:29:20,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:29:20,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:29:20,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:29:20,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:29:20,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:29:20,363 INFO L87 Difference]: Start difference. First operand 2997 states and 5176 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:20,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:29:20,429 INFO L93 Difference]: Finished difference Result 7737 states and 13274 transitions. [2022-07-21 05:29:20,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:29:20,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2022-07-21 05:29:20,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:29:20,445 INFO L225 Difference]: With dead ends: 7737 [2022-07-21 05:29:20,445 INFO L226 Difference]: Without dead ends: 5271 [2022-07-21 05:29:20,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:29:20,452 INFO L413 NwaCegarLoop]: 1264 mSDtfsCounter, 257 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 2493 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:29:20,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 2493 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:29:20,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5271 states. [2022-07-21 05:29:20,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5271 to 5269. [2022-07-21 05:29:20,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5269 states, 5268 states have (on average 1.7145026575550493) internal successors, (9032), 5268 states have internal predecessors, (9032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:20,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5269 states to 5269 states and 9032 transitions. [2022-07-21 05:29:20,617 INFO L78 Accepts]: Start accepts. Automaton has 5269 states and 9032 transitions. Word has length 213 [2022-07-21 05:29:20,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:29:20,617 INFO L495 AbstractCegarLoop]: Abstraction has 5269 states and 9032 transitions. [2022-07-21 05:29:20,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:20,618 INFO L276 IsEmpty]: Start isEmpty. Operand 5269 states and 9032 transitions. [2022-07-21 05:29:20,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-07-21 05:29:20,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:29:20,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:29:20,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 05:29:20,622 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:29:20,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:29:20,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1937278419, now seen corresponding path program 1 times [2022-07-21 05:29:20,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:29:20,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602309088] [2022-07-21 05:29:20,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:29:20,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:29:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:29:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:29:20,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:29:20,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602309088] [2022-07-21 05:29:20,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602309088] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:29:20,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:29:20,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:29:20,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000228901] [2022-07-21 05:29:20,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:29:20,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:29:20,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:29:20,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:29:20,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:29:20,725 INFO L87 Difference]: Start difference. First operand 5269 states and 9032 transitions. Second operand has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:21,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:29:21,429 INFO L93 Difference]: Finished difference Result 32105 states and 55106 transitions. [2022-07-21 05:29:21,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 05:29:21,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2022-07-21 05:29:21,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:29:21,548 INFO L225 Difference]: With dead ends: 32105 [2022-07-21 05:29:21,548 INFO L226 Difference]: Without dead ends: 27367 [2022-07-21 05:29:21,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-21 05:29:21,559 INFO L413 NwaCegarLoop]: 1261 mSDtfsCounter, 3113 mSDsluCounter, 11792 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3113 SdHoareTripleChecker+Valid, 13053 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:29:21,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3113 Valid, 13053 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:29:21,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27367 states. [2022-07-21 05:29:21,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27367 to 9828. [2022-07-21 05:29:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9828 states, 9827 states have (on average 1.7093721379871782) internal successors, (16798), 9827 states have internal predecessors, (16798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:22,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9828 states to 9828 states and 16798 transitions. [2022-07-21 05:29:22,021 INFO L78 Accepts]: Start accepts. Automaton has 9828 states and 16798 transitions. Word has length 217 [2022-07-21 05:29:22,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:29:22,022 INFO L495 AbstractCegarLoop]: Abstraction has 9828 states and 16798 transitions. [2022-07-21 05:29:22,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:22,022 INFO L276 IsEmpty]: Start isEmpty. Operand 9828 states and 16798 transitions. [2022-07-21 05:29:22,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-07-21 05:29:22,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:29:22,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:29:22,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 05:29:22,028 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:29:22,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:29:22,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1954676747, now seen corresponding path program 1 times [2022-07-21 05:29:22,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:29:22,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597992042] [2022-07-21 05:29:22,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:29:22,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:29:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:29:22,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:29:22,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:29:22,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597992042] [2022-07-21 05:29:22,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597992042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:29:22,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:29:22,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:29:22,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644297133] [2022-07-21 05:29:22,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:29:22,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:29:22,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:29:22,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:29:22,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:29:22,104 INFO L87 Difference]: Start difference. First operand 9828 states and 16798 transitions. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:22,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:29:22,502 INFO L93 Difference]: Finished difference Result 28787 states and 49291 transitions. [2022-07-21 05:29:22,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:29:22,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2022-07-21 05:29:22,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:29:22,538 INFO L225 Difference]: With dead ends: 28787 [2022-07-21 05:29:22,538 INFO L226 Difference]: Without dead ends: 19490 [2022-07-21 05:29:22,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:29:22,555 INFO L413 NwaCegarLoop]: 1269 mSDtfsCounter, 915 mSDsluCounter, 2762 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 4031 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:29:22,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 4031 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:29:22,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19490 states. [2022-07-21 05:29:22,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19490 to 14626. [2022-07-21 05:29:22,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14626 states, 14625 states have (on average 1.709128205128205) internal successors, (24996), 14625 states have internal predecessors, (24996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:23,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14626 states to 14626 states and 24996 transitions. [2022-07-21 05:29:23,016 INFO L78 Accepts]: Start accepts. Automaton has 14626 states and 24996 transitions. Word has length 218 [2022-07-21 05:29:23,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:29:23,016 INFO L495 AbstractCegarLoop]: Abstraction has 14626 states and 24996 transitions. [2022-07-21 05:29:23,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:23,017 INFO L276 IsEmpty]: Start isEmpty. Operand 14626 states and 24996 transitions. [2022-07-21 05:29:23,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-07-21 05:29:23,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:29:23,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:29:23,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 05:29:23,025 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:29:23,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:29:23,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2017935659, now seen corresponding path program 1 times [2022-07-21 05:29:23,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:29:23,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334694115] [2022-07-21 05:29:23,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:29:23,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:29:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:29:23,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:29:23,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:29:23,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334694115] [2022-07-21 05:29:23,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334694115] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:29:23,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:29:23,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:29:23,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892311236] [2022-07-21 05:29:23,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:29:23,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:29:23,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:29:23,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:29:23,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:29:23,087 INFO L87 Difference]: Start difference. First operand 14626 states and 24996 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:23,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:29:23,516 INFO L93 Difference]: Finished difference Result 32289 states and 55270 transitions. [2022-07-21 05:29:23,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:29:23,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 219 [2022-07-21 05:29:23,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:29:23,554 INFO L225 Difference]: With dead ends: 32289 [2022-07-21 05:29:23,555 INFO L226 Difference]: Without dead ends: 22529 [2022-07-21 05:29:23,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:29:23,574 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 290 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2731 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:29:23,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 2731 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:29:23,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22529 states. [2022-07-21 05:29:24,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22529 to 22527. [2022-07-21 05:29:24,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22527 states, 22526 states have (on average 1.706072982331528) internal successors, (38431), 22526 states have internal predecessors, (38431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:24,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22527 states to 22527 states and 38431 transitions. [2022-07-21 05:29:24,122 INFO L78 Accepts]: Start accepts. Automaton has 22527 states and 38431 transitions. Word has length 219 [2022-07-21 05:29:24,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:29:24,122 INFO L495 AbstractCegarLoop]: Abstraction has 22527 states and 38431 transitions. [2022-07-21 05:29:24,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:24,123 INFO L276 IsEmpty]: Start isEmpty. Operand 22527 states and 38431 transitions. [2022-07-21 05:29:24,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-07-21 05:29:24,127 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:29:24,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:29:24,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 05:29:24,127 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:29:24,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:29:24,128 INFO L85 PathProgramCache]: Analyzing trace with hash 971795723, now seen corresponding path program 1 times [2022-07-21 05:29:24,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:29:24,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318387421] [2022-07-21 05:29:24,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:29:24,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:29:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:29:24,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:29:24,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:29:24,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318387421] [2022-07-21 05:29:24,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318387421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:29:24,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:29:24,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:29:24,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263244152] [2022-07-21 05:29:24,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:29:24,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:29:24,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:29:24,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:29:24,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:29:24,197 INFO L87 Difference]: Start difference. First operand 22527 states and 38431 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:24,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:29:24,760 INFO L93 Difference]: Finished difference Result 43447 states and 74114 transitions. [2022-07-21 05:29:24,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:29:24,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 219 [2022-07-21 05:29:24,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:29:24,823 INFO L225 Difference]: With dead ends: 43447 [2022-07-21 05:29:24,824 INFO L226 Difference]: Without dead ends: 31797 [2022-07-21 05:29:24,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:29:24,850 INFO L413 NwaCegarLoop]: 1492 mSDtfsCounter, 282 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:29:24,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 2709 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:29:24,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31797 states. [2022-07-21 05:29:25,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31797 to 31795. [2022-07-21 05:29:25,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31795 states, 31794 states have (on average 1.7011700320815248) internal successors, (54087), 31794 states have internal predecessors, (54087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31795 states to 31795 states and 54087 transitions. [2022-07-21 05:29:25,578 INFO L78 Accepts]: Start accepts. Automaton has 31795 states and 54087 transitions. Word has length 219 [2022-07-21 05:29:25,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:29:25,578 INFO L495 AbstractCegarLoop]: Abstraction has 31795 states and 54087 transitions. [2022-07-21 05:29:25,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:25,579 INFO L276 IsEmpty]: Start isEmpty. Operand 31795 states and 54087 transitions. [2022-07-21 05:29:25,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-07-21 05:29:25,581 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:29:25,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:29:25,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 05:29:25,582 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:29:25,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:29:25,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1108641557, now seen corresponding path program 1 times [2022-07-21 05:29:25,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:29:25,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281442216] [2022-07-21 05:29:25,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:29:25,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:29:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:29:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:29:25,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:29:25,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281442216] [2022-07-21 05:29:25,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281442216] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:29:25,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:29:25,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:29:25,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17942370] [2022-07-21 05:29:25,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:29:25,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:29:25,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:29:25,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:29:25,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:29:25,758 INFO L87 Difference]: Start difference. First operand 31795 states and 54087 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:26,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:29:26,582 INFO L93 Difference]: Finished difference Result 61243 states and 104194 transitions. [2022-07-21 05:29:26,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:29:26,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 219 [2022-07-21 05:29:26,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:29:26,657 INFO L225 Difference]: With dead ends: 61243 [2022-07-21 05:29:26,658 INFO L226 Difference]: Without dead ends: 44729 [2022-07-21 05:29:26,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:29:26,674 INFO L413 NwaCegarLoop]: 1460 mSDtfsCounter, 274 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:29:26,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 2678 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:29:26,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44729 states. [2022-07-21 05:29:27,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44729 to 44727. [2022-07-21 05:29:27,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44727 states, 44726 states have (on average 1.695993381925502) internal successors, (75855), 44726 states have internal predecessors, (75855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:27,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44727 states to 44727 states and 75855 transitions. [2022-07-21 05:29:27,595 INFO L78 Accepts]: Start accepts. Automaton has 44727 states and 75855 transitions. Word has length 219 [2022-07-21 05:29:27,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:29:27,596 INFO L495 AbstractCegarLoop]: Abstraction has 44727 states and 75855 transitions. [2022-07-21 05:29:27,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:27,596 INFO L276 IsEmpty]: Start isEmpty. Operand 44727 states and 75855 transitions. [2022-07-21 05:29:27,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-07-21 05:29:27,599 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:29:27,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:29:27,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 05:29:27,599 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:29:27,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:29:27,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1814324427, now seen corresponding path program 1 times [2022-07-21 05:29:27,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:29:27,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106083569] [2022-07-21 05:29:27,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:29:27,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:29:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:29:27,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:29:27,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:29:27,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106083569] [2022-07-21 05:29:27,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106083569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:29:27,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:29:27,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:29:27,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710435532] [2022-07-21 05:29:27,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:29:27,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:29:27,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:29:27,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:29:27,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:29:27,684 INFO L87 Difference]: Start difference. First operand 44727 states and 75855 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:28,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:29:28,611 INFO L93 Difference]: Finished difference Result 86007 states and 145898 transitions. [2022-07-21 05:29:28,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:29:28,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 219 [2022-07-21 05:29:28,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:29:28,774 INFO L225 Difference]: With dead ends: 86007 [2022-07-21 05:29:28,775 INFO L226 Difference]: Without dead ends: 62677 [2022-07-21 05:29:28,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:29:28,807 INFO L413 NwaCegarLoop]: 1428 mSDtfsCounter, 266 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:29:28,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 2647 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:29:28,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62677 states. [2022-07-21 05:29:30,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62677 to 62675. [2022-07-21 05:29:30,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62675 states, 62674 states have (on average 1.6903500654178767) internal successors, (105941), 62674 states have internal predecessors, (105941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:30,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62675 states to 62675 states and 105941 transitions. [2022-07-21 05:29:30,494 INFO L78 Accepts]: Start accepts. Automaton has 62675 states and 105941 transitions. Word has length 219 [2022-07-21 05:29:30,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:29:30,495 INFO L495 AbstractCegarLoop]: Abstraction has 62675 states and 105941 transitions. [2022-07-21 05:29:30,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:30,496 INFO L276 IsEmpty]: Start isEmpty. Operand 62675 states and 105941 transitions. [2022-07-21 05:29:30,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-07-21 05:29:30,497 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:29:30,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:29:30,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 05:29:30,498 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:29:30,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:29:30,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1938345813, now seen corresponding path program 1 times [2022-07-21 05:29:30,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:29:30,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20172113] [2022-07-21 05:29:30,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:29:30,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:29:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:29:30,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:29:30,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:29:30,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20172113] [2022-07-21 05:29:30,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20172113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:29:30,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:29:30,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:29:30,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642003452] [2022-07-21 05:29:30,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:29:30,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:29:30,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:29:30,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:29:30,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:29:30,579 INFO L87 Difference]: Start difference. First operand 62675 states and 105941 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:32,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:29:32,148 INFO L93 Difference]: Finished difference Result 120263 states and 203338 transitions. [2022-07-21 05:29:32,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:29:32,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 219 [2022-07-21 05:29:32,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:29:32,345 INFO L225 Difference]: With dead ends: 120263 [2022-07-21 05:29:32,345 INFO L226 Difference]: Without dead ends: 87429 [2022-07-21 05:29:32,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:29:32,393 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 258 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 2616 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:29:32,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 2616 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:29:32,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87429 states. [2022-07-21 05:29:34,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87429 to 87427. [2022-07-21 05:29:34,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87427 states, 87426 states have (on average 1.684041360693615) internal successors, (147229), 87426 states have internal predecessors, (147229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:34,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87427 states to 87427 states and 147229 transitions. [2022-07-21 05:29:34,434 INFO L78 Accepts]: Start accepts. Automaton has 87427 states and 147229 transitions. Word has length 219 [2022-07-21 05:29:34,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:29:34,434 INFO L495 AbstractCegarLoop]: Abstraction has 87427 states and 147229 transitions. [2022-07-21 05:29:34,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:34,435 INFO L276 IsEmpty]: Start isEmpty. Operand 87427 states and 147229 transitions. [2022-07-21 05:29:34,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-07-21 05:29:34,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:29:34,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:29:34,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 05:29:34,437 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:29:34,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:29:34,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1631938038, now seen corresponding path program 1 times [2022-07-21 05:29:34,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:29:34,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943922461] [2022-07-21 05:29:34,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:29:34,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:29:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:29:34,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:29:34,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:29:34,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943922461] [2022-07-21 05:29:34,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943922461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:29:34,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:29:34,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:29:34,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478867896] [2022-07-21 05:29:34,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:29:34,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:29:34,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:29:34,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:29:34,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:29:34,718 INFO L87 Difference]: Start difference. First operand 87427 states and 147229 transitions. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:38,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:29:38,271 INFO L93 Difference]: Finished difference Result 288033 states and 485327 transitions. [2022-07-21 05:29:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:29:38,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 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 219 [2022-07-21 05:29:38,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:29:38,815 INFO L225 Difference]: With dead ends: 288033 [2022-07-21 05:29:38,816 INFO L226 Difference]: Without dead ends: 201219 [2022-07-21 05:29:38,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:29:38,937 INFO L413 NwaCegarLoop]: 1254 mSDtfsCounter, 914 mSDsluCounter, 2581 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 3835 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:29:38,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 3835 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:29:39,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201219 states. [2022-07-21 05:29:42,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201219 to 144054. [2022-07-21 05:29:42,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144054 states, 144053 states have (on average 1.6790209159128933) internal successors, (241868), 144053 states have internal predecessors, (241868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:43,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144054 states to 144054 states and 241868 transitions. [2022-07-21 05:29:43,332 INFO L78 Accepts]: Start accepts. Automaton has 144054 states and 241868 transitions. Word has length 219 [2022-07-21 05:29:43,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:29:43,332 INFO L495 AbstractCegarLoop]: Abstraction has 144054 states and 241868 transitions. [2022-07-21 05:29:43,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:43,333 INFO L276 IsEmpty]: Start isEmpty. Operand 144054 states and 241868 transitions. [2022-07-21 05:29:43,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-07-21 05:29:43,348 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:29:43,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:29:43,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 05:29:43,353 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:29:43,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:29:43,353 INFO L85 PathProgramCache]: Analyzing trace with hash -978842334, now seen corresponding path program 1 times [2022-07-21 05:29:43,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:29:43,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486300889] [2022-07-21 05:29:43,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:29:43,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:29:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:29:43,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:29:43,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:29:43,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486300889] [2022-07-21 05:29:43,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486300889] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:29:43,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:29:43,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:29:43,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549880868] [2022-07-21 05:29:43,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:29:43,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:29:43,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:29:43,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:29:43,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:29:43,503 INFO L87 Difference]: Start difference. First operand 144054 states and 241868 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:29:50,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:29:50,114 INFO L93 Difference]: Finished difference Result 474363 states and 796985 transitions. [2022-07-21 05:29:50,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:29:50,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2022-07-21 05:29:50,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:29:51,019 INFO L225 Difference]: With dead ends: 474363 [2022-07-21 05:29:51,019 INFO L226 Difference]: Without dead ends: 330922 [2022-07-21 05:29:51,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:29:51,207 INFO L413 NwaCegarLoop]: 1255 mSDtfsCounter, 912 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 4021 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:29:51,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 4021 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:29:51,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330922 states.