./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label06.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 5a8db184ab7332ab7843787a030506038544a962a60c0b43f4b663ada8e12be3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:01:19,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:01:19,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:01:19,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:01:19,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:01:19,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:01:19,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:01:19,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:01:19,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:01:19,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:01:19,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:01:19,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:01:19,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:01:19,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:01:19,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:01:19,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:01:19,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:01:19,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:01:19,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:01:19,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:01:19,353 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:01:19,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:01:19,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:01:19,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:01:19,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:01:19,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:01:19,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:01:19,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:01:19,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:01:19,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:01:19,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:01:19,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:01:19,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:01:19,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:01:19,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:01:19,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:01:19,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:01:19,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:01:19,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:01:19,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:01:19,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:01:19,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:01:19,371 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:01:19,394 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:01:19,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:01:19,395 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:01:19,395 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:01:19,396 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:01:19,396 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:01:19,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:01:19,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:01:19,397 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:01:19,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:01:19,398 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:01:19,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:01:19,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:01:19,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:01:19,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:01:19,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:01:19,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:01:19,399 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:01:19,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:01:19,399 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:01:19,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:01:19,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:01:19,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:01:19,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:01:19,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:01:19,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:01:19,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:01:19,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:01:19,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:01:19,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:01:19,401 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:01:19,401 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:01:19,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:01:19,401 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a8db184ab7332ab7843787a030506038544a962a60c0b43f4b663ada8e12be3 [2022-07-13 21:01:19,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:01:19,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:01:19,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:01:19,598 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:01:19,599 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:01:19,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label06.c [2022-07-13 21:01:19,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5524c3f74/025646e474dd4619895762eb4dc865a9/FLAG6133e63e0 [2022-07-13 21:01:20,271 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:01:20,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label06.c [2022-07-13 21:01:20,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5524c3f74/025646e474dd4619895762eb4dc865a9/FLAG6133e63e0 [2022-07-13 21:01:20,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5524c3f74/025646e474dd4619895762eb4dc865a9 [2022-07-13 21:01:20,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:01:20,683 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:01:20,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:01:20,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:01:20,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:01:20,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:01:20" (1/1) ... [2022-07-13 21:01:20,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ee7ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:20, skipping insertion in model container [2022-07-13 21:01:20,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:01:20" (1/1) ... [2022-07-13 21:01:20,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:01:20,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:01:21,162 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/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label06.c[20426,20439] [2022-07-13 21:01:21,192 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/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label06.c[23243,23256] [2022-07-13 21:01:21,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:01:21,646 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:01:21,692 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/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label06.c[20426,20439] [2022-07-13 21:01:21,700 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/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label06.c[23243,23256] [2022-07-13 21:01:21,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:01:21,984 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:01:21,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:21 WrapperNode [2022-07-13 21:01:21,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:01:21,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:01:21,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:01:21,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:01:21,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:21" (1/1) ... [2022-07-13 21:01:22,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:21" (1/1) ... [2022-07-13 21:01:22,384 INFO L137 Inliner]: procedures = 38, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5210 [2022-07-13 21:01:22,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:01:22,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:01:22,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:01:22,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:01:22,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:21" (1/1) ... [2022-07-13 21:01:22,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:21" (1/1) ... [2022-07-13 21:01:22,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:21" (1/1) ... [2022-07-13 21:01:22,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:21" (1/1) ... [2022-07-13 21:01:22,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:21" (1/1) ... [2022-07-13 21:01:22,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:21" (1/1) ... [2022-07-13 21:01:22,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:21" (1/1) ... [2022-07-13 21:01:22,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:01:22,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:01:22,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:01:22,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:01:22,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:21" (1/1) ... [2022-07-13 21:01:22,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:01:22,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:01:22,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 21:01:22,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 21:01:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:01:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:01:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:01:22,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:01:23,019 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:01:23,020 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:01:25,702 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:01:25,719 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:01:25,719 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 21:01:25,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:01:25 BoogieIcfgContainer [2022-07-13 21:01:25,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:01:25,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:01:25,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:01:25,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:01:25,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:01:20" (1/3) ... [2022-07-13 21:01:25,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5384639e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:01:25, skipping insertion in model container [2022-07-13 21:01:25,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:21" (2/3) ... [2022-07-13 21:01:25,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5384639e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:01:25, skipping insertion in model container [2022-07-13 21:01:25,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:01:25" (3/3) ... [2022-07-13 21:01:25,729 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label06.c [2022-07-13 21:01:25,739 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:01:25,739 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:01:25,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:01:25,843 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@56d0616b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1ad35d88 [2022-07-13 21:01:25,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:01:25,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 944 states, 941 states have (on average 1.8979808714133901) internal successors, (1786), 943 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:25,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-13 21:01:25,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:01:25,856 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] [2022-07-13 21:01:25,856 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:01:25,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:01:25,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1303430997, now seen corresponding path program 1 times [2022-07-13 21:01:25,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:01:25,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647837683] [2022-07-13 21:01:25,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:01:25,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:01:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:01:26,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:01:26,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:01:26,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647837683] [2022-07-13 21:01:26,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647837683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:01:26,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:01:26,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 21:01:26,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102015453] [2022-07-13 21:01:26,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:01:26,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:01:26,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:01:26,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:01:26,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:01:26,048 INFO L87 Difference]: Start difference. First operand has 944 states, 941 states have (on average 1.8979808714133901) internal successors, (1786), 943 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:28,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:01:28,911 INFO L93 Difference]: Finished difference Result 2587 states and 4966 transitions. [2022-07-13 21:01:28,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:01:28,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-07-13 21:01:28,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:01:28,929 INFO L225 Difference]: With dead ends: 2587 [2022-07-13 21:01:28,929 INFO L226 Difference]: Without dead ends: 1629 [2022-07-13 21:01:28,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:01:28,937 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1091 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:01:28,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1091 Valid, 375 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 21:01:28,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2022-07-13 21:01:29,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1629. [2022-07-13 21:01:29,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1627 states have (on average 1.8389674247080516) internal successors, (2992), 1628 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:29,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2992 transitions. [2022-07-13 21:01:29,036 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2992 transitions. Word has length 24 [2022-07-13 21:01:29,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:01:29,036 INFO L495 AbstractCegarLoop]: Abstraction has 1629 states and 2992 transitions. [2022-07-13 21:01:29,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:29,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2992 transitions. [2022-07-13 21:01:29,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-13 21:01:29,042 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:01:29,042 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] [2022-07-13 21:01:29,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:01:29,043 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:01:29,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:01:29,045 INFO L85 PathProgramCache]: Analyzing trace with hash 325703937, now seen corresponding path program 1 times [2022-07-13 21:01:29,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:01:29,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463663383] [2022-07-13 21:01:29,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:01:29,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:01:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:01:29,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:01:29,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:01:29,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463663383] [2022-07-13 21:01:29,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463663383] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:01:29,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:01:29,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:01:29,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488739744] [2022-07-13 21:01:29,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:01:29,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:01:29,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:01:29,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:01:29,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:01:29,148 INFO L87 Difference]: Start difference. First operand 1629 states and 2992 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:29,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:01:29,218 INFO L93 Difference]: Finished difference Result 1701 states and 3104 transitions. [2022-07-13 21:01:29,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:01:29,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-07-13 21:01:29,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:01:29,223 INFO L225 Difference]: With dead ends: 1701 [2022-07-13 21:01:29,223 INFO L226 Difference]: Without dead ends: 1629 [2022-07-13 21:01:29,226 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 [2022-07-13 21:01:29,227 INFO L413 NwaCegarLoop]: 1651 mSDtfsCounter, 3 mSDsluCounter, 4900 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6551 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:01:29,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6551 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:01:29,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2022-07-13 21:01:29,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1629. [2022-07-13 21:01:29,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1627 states have (on average 1.8082360172095882) internal successors, (2942), 1628 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:29,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2942 transitions. [2022-07-13 21:01:29,254 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2942 transitions. Word has length 42 [2022-07-13 21:01:29,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:01:29,254 INFO L495 AbstractCegarLoop]: Abstraction has 1629 states and 2942 transitions. [2022-07-13 21:01:29,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:29,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2942 transitions. [2022-07-13 21:01:29,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:01:29,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:01:29,256 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] [2022-07-13 21:01:29,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:01:29,257 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:01:29,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:01:29,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1207745120, now seen corresponding path program 1 times [2022-07-13 21:01:29,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:01:29,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810779845] [2022-07-13 21:01:29,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:01:29,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:01:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:01:29,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:01:29,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:01:29,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810779845] [2022-07-13 21:01:29,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810779845] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:01:29,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:01:29,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:01:29,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596447054] [2022-07-13 21:01:29,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:01:29,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:01:29,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:01:29,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:01:29,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:01:29,337 INFO L87 Difference]: Start difference. First operand 1629 states and 2942 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:29,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:01:29,359 INFO L93 Difference]: Finished difference Result 1759 states and 3148 transitions. [2022-07-13 21:01:29,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:01:29,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-13 21:01:29,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:01:29,365 INFO L225 Difference]: With dead ends: 1759 [2022-07-13 21:01:29,365 INFO L226 Difference]: Without dead ends: 1691 [2022-07-13 21:01:29,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:01:29,366 INFO L413 NwaCegarLoop]: 1697 mSDtfsCounter, 1537 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1803 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 [2022-07-13 21:01:29,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 1803 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:01:29,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2022-07-13 21:01:29,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1689. [2022-07-13 21:01:29,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1687 states have (on average 1.8008298755186722) internal successors, (3038), 1688 states have internal predecessors, (3038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:29,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 3038 transitions. [2022-07-13 21:01:29,443 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 3038 transitions. Word has length 91 [2022-07-13 21:01:29,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:01:29,459 INFO L495 AbstractCegarLoop]: Abstraction has 1689 states and 3038 transitions. [2022-07-13 21:01:29,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:29,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 3038 transitions. [2022-07-13 21:01:29,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:01:29,461 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:01:29,461 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] [2022-07-13 21:01:29,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:01:29,461 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:01:29,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:01:29,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1564953708, now seen corresponding path program 1 times [2022-07-13 21:01:29,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:01:29,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656430167] [2022-07-13 21:01:29,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:01:29,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:01:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:01:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:01:29,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:01:29,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656430167] [2022-07-13 21:01:29,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656430167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:01:29,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:01:29,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:01:29,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809277586] [2022-07-13 21:01:29,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:01:29,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:01:29,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:01:29,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:01:29,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:01:29,569 INFO L87 Difference]: Start difference. First operand 1689 states and 3038 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:29,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:01:29,595 INFO L93 Difference]: Finished difference Result 1933 states and 3426 transitions. [2022-07-13 21:01:29,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:01:29,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-13 21:01:29,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:01:29,602 INFO L225 Difference]: With dead ends: 1933 [2022-07-13 21:01:29,603 INFO L226 Difference]: Without dead ends: 1805 [2022-07-13 21:01:29,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:01:29,612 INFO L413 NwaCegarLoop]: 1692 mSDtfsCounter, 1533 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1802 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 [2022-07-13 21:01:29,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 1802 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:01:29,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2022-07-13 21:01:29,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1803. [2022-07-13 21:01:29,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1801 states have (on average 1.787340366463076) internal successors, (3219), 1802 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:29,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 3219 transitions. [2022-07-13 21:01:29,642 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 3219 transitions. Word has length 91 [2022-07-13 21:01:29,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:01:29,643 INFO L495 AbstractCegarLoop]: Abstraction has 1803 states and 3219 transitions. [2022-07-13 21:01:29,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:29,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 3219 transitions. [2022-07-13 21:01:29,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:01:29,645 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:01:29,645 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] [2022-07-13 21:01:29,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:01:29,646 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:01:29,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:01:29,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1479108296, now seen corresponding path program 1 times [2022-07-13 21:01:29,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:01:29,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099642148] [2022-07-13 21:01:29,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:01:29,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:01:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:01:29,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:01:29,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:01:29,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099642148] [2022-07-13 21:01:29,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099642148] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:01:29,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:01:29,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:01:29,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244953970] [2022-07-13 21:01:29,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:01:29,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:01:29,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:01:29,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:01:29,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:01:29,739 INFO L87 Difference]: Start difference. First operand 1803 states and 3219 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:29,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:01:29,770 INFO L93 Difference]: Finished difference Result 2263 states and 3949 transitions. [2022-07-13 21:01:29,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:01:29,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-13 21:01:29,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:01:29,777 INFO L225 Difference]: With dead ends: 2263 [2022-07-13 21:01:29,777 INFO L226 Difference]: Without dead ends: 2021 [2022-07-13 21:01:29,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:01:29,780 INFO L413 NwaCegarLoop]: 1687 mSDtfsCounter, 1529 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1801 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 [2022-07-13 21:01:29,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 1801 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:01:29,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2022-07-13 21:01:29,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 2019. [2022-07-13 21:01:29,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 2017 states have (on average 1.7645017352503718) internal successors, (3559), 2018 states have internal predecessors, (3559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:29,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3559 transitions. [2022-07-13 21:01:29,814 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3559 transitions. Word has length 91 [2022-07-13 21:01:29,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:01:29,816 INFO L495 AbstractCegarLoop]: Abstraction has 2019 states and 3559 transitions. [2022-07-13 21:01:29,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:29,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3559 transitions. [2022-07-13 21:01:29,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:01:29,821 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:01:29,821 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] [2022-07-13 21:01:29,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:01:29,821 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:01:29,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:01:29,825 INFO L85 PathProgramCache]: Analyzing trace with hash 733525566, now seen corresponding path program 1 times [2022-07-13 21:01:29,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:01:29,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111653862] [2022-07-13 21:01:29,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:01:29,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:01:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:01:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:01:29,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:01:29,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111653862] [2022-07-13 21:01:29,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111653862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:01:29,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:01:29,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:01:29,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714427242] [2022-07-13 21:01:29,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:01:29,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:01:29,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:01:29,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:01:29,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:01:29,887 INFO L87 Difference]: Start difference. First operand 2019 states and 3559 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:29,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:01:29,923 INFO L93 Difference]: Finished difference Result 2887 states and 4929 transitions. [2022-07-13 21:01:29,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:01:29,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-13 21:01:29,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:01:29,932 INFO L225 Difference]: With dead ends: 2887 [2022-07-13 21:01:29,932 INFO L226 Difference]: Without dead ends: 2429 [2022-07-13 21:01:29,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:01:29,935 INFO L413 NwaCegarLoop]: 1682 mSDtfsCounter, 1525 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1800 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 [2022-07-13 21:01:29,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 1800 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:01:29,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2022-07-13 21:01:29,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2427. [2022-07-13 21:01:29,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 2425 states have (on average 1.729896907216495) internal successors, (4195), 2426 states have internal predecessors, (4195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:29,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 4195 transitions. [2022-07-13 21:01:29,981 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 4195 transitions. Word has length 91 [2022-07-13 21:01:29,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:01:29,982 INFO L495 AbstractCegarLoop]: Abstraction has 2427 states and 4195 transitions. [2022-07-13 21:01:29,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:29,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 4195 transitions. [2022-07-13 21:01:29,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:01:29,983 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:01:29,983 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] [2022-07-13 21:01:29,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:01:29,984 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:01:29,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:01:29,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1206505292, now seen corresponding path program 1 times [2022-07-13 21:01:29,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:01:29,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105457689] [2022-07-13 21:01:29,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:01:29,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:01:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:01:30,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:01:30,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:01:30,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105457689] [2022-07-13 21:01:30,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105457689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:01:30,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:01:30,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:01:30,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211928204] [2022-07-13 21:01:30,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:01:30,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:01:30,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:01:30,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:01:30,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:01:30,044 INFO L87 Difference]: Start difference. First operand 2427 states and 4195 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:30,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:01:30,092 INFO L93 Difference]: Finished difference Result 4063 states and 6757 transitions. [2022-07-13 21:01:30,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:01:30,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-13 21:01:30,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:01:30,101 INFO L225 Difference]: With dead ends: 4063 [2022-07-13 21:01:30,101 INFO L226 Difference]: Without dead ends: 3197 [2022-07-13 21:01:30,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:01:30,104 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 1521 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1799 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 [2022-07-13 21:01:30,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 1799 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:01:30,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3197 states. [2022-07-13 21:01:30,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3197 to 3195. [2022-07-13 21:01:30,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3195 states, 3193 states have (on average 1.6846226119636705) internal successors, (5379), 3194 states have internal predecessors, (5379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:30,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3195 states to 3195 states and 5379 transitions. [2022-07-13 21:01:30,163 INFO L78 Accepts]: Start accepts. Automaton has 3195 states and 5379 transitions. Word has length 91 [2022-07-13 21:01:30,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:01:30,163 INFO L495 AbstractCegarLoop]: Abstraction has 3195 states and 5379 transitions. [2022-07-13 21:01:30,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:30,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 5379 transitions. [2022-07-13 21:01:30,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:01:30,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:01:30,164 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] [2022-07-13 21:01:30,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:01:30,164 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:01:30,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:01:30,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1494177322, now seen corresponding path program 1 times [2022-07-13 21:01:30,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:01:30,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499086976] [2022-07-13 21:01:30,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:01:30,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:01:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:01:30,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:01:30,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:01:30,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499086976] [2022-07-13 21:01:30,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499086976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:01:30,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:01:30,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:01:30,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792048272] [2022-07-13 21:01:30,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:01:30,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:01:30,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:01:30,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:01:30,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:01:30,258 INFO L87 Difference]: Start difference. First operand 3195 states and 5379 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:31,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:01:31,252 INFO L93 Difference]: Finished difference Result 26071 states and 41009 transitions. [2022-07-13 21:01:31,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:01:31,253 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-13 21:01:31,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:01:31,322 INFO L225 Difference]: With dead ends: 26071 [2022-07-13 21:01:31,322 INFO L226 Difference]: Without dead ends: 24437 [2022-07-13 21:01:31,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-07-13 21:01:31,333 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 13389 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13389 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:01:31,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13389 Valid, 3111 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:01:31,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24437 states. [2022-07-13 21:01:31,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24437 to 4827. [2022-07-13 21:01:31,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4827 states, 4825 states have (on average 1.6288082901554404) internal successors, (7859), 4826 states have internal predecessors, (7859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:31,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 7859 transitions. [2022-07-13 21:01:31,738 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 7859 transitions. Word has length 91 [2022-07-13 21:01:31,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:01:31,738 INFO L495 AbstractCegarLoop]: Abstraction has 4827 states and 7859 transitions. [2022-07-13 21:01:31,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:31,738 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 7859 transitions. [2022-07-13 21:01:31,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-13 21:01:31,740 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:01:31,740 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] [2022-07-13 21:01:31,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:01:31,741 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:01:31,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:01:31,741 INFO L85 PathProgramCache]: Analyzing trace with hash -30360326, now seen corresponding path program 1 times [2022-07-13 21:01:31,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:01:31,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970510564] [2022-07-13 21:01:31,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:01:31,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:01:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:01:31,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:01:31,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:01:31,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970510564] [2022-07-13 21:01:31,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970510564] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:01:31,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:01:31,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:01:31,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291160465] [2022-07-13 21:01:31,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:01:31,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:01:31,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:01:31,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:01:31,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:01:31,786 INFO L87 Difference]: Start difference. First operand 4827 states and 7859 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:32,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:01:32,103 INFO L93 Difference]: Finished difference Result 9649 states and 15271 transitions. [2022-07-13 21:01:32,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:01:32,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-07-13 21:01:32,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:01:32,114 INFO L225 Difference]: With dead ends: 9649 [2022-07-13 21:01:32,114 INFO L226 Difference]: Without dead ends: 6383 [2022-07-13 21:01:32,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:01:32,119 INFO L413 NwaCegarLoop]: 1632 mSDtfsCounter, 1505 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:01:32,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 1735 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:01:32,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6383 states. [2022-07-13 21:01:32,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6383 to 6381. [2022-07-13 21:01:32,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6381 states, 6379 states have (on average 1.5985264147985578) internal successors, (10197), 6380 states have internal predecessors, (10197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:32,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 10197 transitions. [2022-07-13 21:01:32,394 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 10197 transitions. Word has length 93 [2022-07-13 21:01:32,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:01:32,394 INFO L495 AbstractCegarLoop]: Abstraction has 6381 states and 10197 transitions. [2022-07-13 21:01:32,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:32,395 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 10197 transitions. [2022-07-13 21:01:32,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-13 21:01:32,395 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:01:32,395 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] [2022-07-13 21:01:32,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:01:32,396 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:01:32,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:01:32,402 INFO L85 PathProgramCache]: Analyzing trace with hash 36133186, now seen corresponding path program 1 times [2022-07-13 21:01:32,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:01:32,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677469018] [2022-07-13 21:01:32,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:01:32,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:01:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:01:32,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:01:32,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:01:32,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677469018] [2022-07-13 21:01:32,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677469018] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:01:32,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:01:32,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:01:32,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285734409] [2022-07-13 21:01:32,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:01:32,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:01:32,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:01:32,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:01:32,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:01:32,584 INFO L87 Difference]: Start difference. First operand 6381 states and 10197 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:33,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:01:33,072 INFO L93 Difference]: Finished difference Result 11201 states and 17559 transitions. [2022-07-13 21:01:33,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:01:33,072 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-07-13 21:01:33,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:01:33,082 INFO L225 Difference]: With dead ends: 11201 [2022-07-13 21:01:33,082 INFO L226 Difference]: Without dead ends: 6383 [2022-07-13 21:01:33,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-07-13 21:01:33,088 INFO L413 NwaCegarLoop]: 1643 mSDtfsCounter, 4932 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4932 SdHoareTripleChecker+Valid, 2282 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:01:33,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4932 Valid, 2282 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:01:33,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6383 states. [2022-07-13 21:01:33,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6383 to 6381. [2022-07-13 21:01:33,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6381 states, 6379 states have (on average 1.5910017244082144) internal successors, (10149), 6380 states have internal predecessors, (10149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:33,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 10149 transitions. [2022-07-13 21:01:33,421 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 10149 transitions. Word has length 93 [2022-07-13 21:01:33,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:01:33,421 INFO L495 AbstractCegarLoop]: Abstraction has 6381 states and 10149 transitions. [2022-07-13 21:01:33,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:33,422 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 10149 transitions. [2022-07-13 21:01:33,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-13 21:01:33,422 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:01:33,423 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] [2022-07-13 21:01:33,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 21:01:33,423 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:01:33,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:01:33,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1825047262, now seen corresponding path program 1 times [2022-07-13 21:01:33,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:01:33,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348656432] [2022-07-13 21:01:33,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:01:33,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:01:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:01:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:01:33,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:01:33,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348656432] [2022-07-13 21:01:33,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348656432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:01:33,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:01:33,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:01:33,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397938353] [2022-07-13 21:01:33,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:01:33,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:01:33,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:01:33,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:01:33,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:01:33,458 INFO L87 Difference]: Start difference. First operand 6381 states and 10149 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:33,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:01:33,885 INFO L93 Difference]: Finished difference Result 15441 states and 23815 transitions. [2022-07-13 21:01:33,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:01:33,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-07-13 21:01:33,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:01:33,908 INFO L225 Difference]: With dead ends: 15441 [2022-07-13 21:01:33,908 INFO L226 Difference]: Without dead ends: 10623 [2022-07-13 21:01:33,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:01:33,916 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 1513 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1789 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 [2022-07-13 21:01:33,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1789 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:01:33,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10623 states. [2022-07-13 21:01:34,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10623 to 10621. [2022-07-13 21:01:34,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10621 states, 10619 states have (on average 1.5448723985309352) internal successors, (16405), 10620 states have internal predecessors, (16405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:34,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10621 states to 10621 states and 16405 transitions. [2022-07-13 21:01:34,500 INFO L78 Accepts]: Start accepts. Automaton has 10621 states and 16405 transitions. Word has length 93 [2022-07-13 21:01:34,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:01:34,500 INFO L495 AbstractCegarLoop]: Abstraction has 10621 states and 16405 transitions. [2022-07-13 21:01:34,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:34,501 INFO L276 IsEmpty]: Start isEmpty. Operand 10621 states and 16405 transitions. [2022-07-13 21:01:34,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-13 21:01:34,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:01:34,501 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] [2022-07-13 21:01:34,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 21:01:34,502 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:01:34,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:01:34,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1222412418, now seen corresponding path program 1 times [2022-07-13 21:01:34,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:01:34,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044989342] [2022-07-13 21:01:34,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:01:34,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:01:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:01:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:01:34,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:01:34,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044989342] [2022-07-13 21:01:34,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044989342] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:01:34,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:01:34,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:01:34,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099575830] [2022-07-13 21:01:34,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:01:34,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:01:34,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:01:34,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:01:34,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:01:34,532 INFO L87 Difference]: Start difference. First operand 10621 states and 16405 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:35,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:01:35,524 INFO L93 Difference]: Finished difference Result 27585 states and 41623 transitions. [2022-07-13 21:01:35,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:01:35,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-07-13 21:01:35,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:01:35,554 INFO L225 Difference]: With dead ends: 27585 [2022-07-13 21:01:35,554 INFO L226 Difference]: Without dead ends: 18527 [2022-07-13 21:01:35,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:01:35,568 INFO L413 NwaCegarLoop]: 1672 mSDtfsCounter, 1517 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1798 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 [2022-07-13 21:01:35,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 1798 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:01:35,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18527 states. [2022-07-13 21:01:36,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18527 to 18525. [2022-07-13 21:01:36,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18525 states, 18523 states have (on average 1.5041300005398694) internal successors, (27861), 18524 states have internal predecessors, (27861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:36,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18525 states to 18525 states and 27861 transitions. [2022-07-13 21:01:36,697 INFO L78 Accepts]: Start accepts. Automaton has 18525 states and 27861 transitions. Word has length 93 [2022-07-13 21:01:36,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:01:36,698 INFO L495 AbstractCegarLoop]: Abstraction has 18525 states and 27861 transitions. [2022-07-13 21:01:36,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:36,698 INFO L276 IsEmpty]: Start isEmpty. Operand 18525 states and 27861 transitions. [2022-07-13 21:01:36,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-13 21:01:36,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:01:36,699 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:01:36,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:01:36,699 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:01:36,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:01:36,700 INFO L85 PathProgramCache]: Analyzing trace with hash 583876181, now seen corresponding path program 1 times [2022-07-13 21:01:36,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:01:36,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913097009] [2022-07-13 21:01:36,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:01:36,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:01:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:01:36,768 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:01:36,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:01:36,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913097009] [2022-07-13 21:01:36,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913097009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:01:36,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:01:36,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:01:36,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191192444] [2022-07-13 21:01:36,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:01:36,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:01:36,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:01:36,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:01:36,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:01:36,770 INFO L87 Difference]: Start difference. First operand 18525 states and 27861 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:41,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:01:41,701 INFO L93 Difference]: Finished difference Result 22282 states and 34751 transitions. [2022-07-13 21:01:41,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 21:01:41,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-07-13 21:01:41,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:01:41,756 INFO L225 Difference]: With dead ends: 22282 [2022-07-13 21:01:41,756 INFO L226 Difference]: Without dead ends: 20778 [2022-07-13 21:01:41,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:01:41,766 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 2487 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4805 mSolverCounterSat, 1138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2487 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 5943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1138 IncrementalHoareTripleChecker+Valid, 4805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:01:41,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2487 Valid, 878 Invalid, 5943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1138 Valid, 4805 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-13 21:01:41,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20778 states. [2022-07-13 21:01:42,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20778 to 20778. [2022-07-13 21:01:42,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20778 states, 20776 states have (on average 1.465633423180593) internal successors, (30450), 20777 states have internal predecessors, (30450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:42,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20778 states to 20778 states and 30450 transitions. [2022-07-13 21:01:42,865 INFO L78 Accepts]: Start accepts. Automaton has 20778 states and 30450 transitions. Word has length 93 [2022-07-13 21:01:42,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:01:42,865 INFO L495 AbstractCegarLoop]: Abstraction has 20778 states and 30450 transitions. [2022-07-13 21:01:42,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:42,866 INFO L276 IsEmpty]: Start isEmpty. Operand 20778 states and 30450 transitions. [2022-07-13 21:01:42,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-13 21:01:42,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:01:42,867 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] [2022-07-13 21:01:42,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:01:42,867 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:01:42,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:01:42,868 INFO L85 PathProgramCache]: Analyzing trace with hash 705405902, now seen corresponding path program 1 times [2022-07-13 21:01:42,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:01:42,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356021666] [2022-07-13 21:01:42,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:01:42,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:01:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:01:42,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:01:42,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:01:42,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356021666] [2022-07-13 21:01:42,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356021666] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:01:42,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:01:42,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:01:42,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965661795] [2022-07-13 21:01:42,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:01:42,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:01:42,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:01:42,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:01:42,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:01:42,922 INFO L87 Difference]: Start difference. First operand 20778 states and 30450 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:44,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:01:44,344 INFO L93 Difference]: Finished difference Result 37740 states and 55475 transitions. [2022-07-13 21:01:44,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 21:01:44,345 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-07-13 21:01:44,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:01:44,399 INFO L225 Difference]: With dead ends: 37740 [2022-07-13 21:01:44,399 INFO L226 Difference]: Without dead ends: 20778 [2022-07-13 21:01:44,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:01:44,421 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 4985 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4985 SdHoareTripleChecker+Valid, 3088 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:01:44,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4985 Valid, 3088 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:01:44,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20778 states. [2022-07-13 21:01:45,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20778 to 20778. [2022-07-13 21:01:45,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20778 states, 20776 states have (on average 1.453311513284559) internal successors, (30194), 20777 states have internal predecessors, (30194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:45,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20778 states to 20778 states and 30194 transitions. [2022-07-13 21:01:45,770 INFO L78 Accepts]: Start accepts. Automaton has 20778 states and 30194 transitions. Word has length 94 [2022-07-13 21:01:45,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:01:45,770 INFO L495 AbstractCegarLoop]: Abstraction has 20778 states and 30194 transitions. [2022-07-13 21:01:45,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:45,771 INFO L276 IsEmpty]: Start isEmpty. Operand 20778 states and 30194 transitions. [2022-07-13 21:01:45,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-13 21:01:45,771 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:01:45,772 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] [2022-07-13 21:01:45,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 21:01:45,772 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:01:45,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:01:45,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1549411404, now seen corresponding path program 1 times [2022-07-13 21:01:45,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:01:45,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541049463] [2022-07-13 21:01:45,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:01:45,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:01:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:01:45,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:01:45,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:01:45,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541049463] [2022-07-13 21:01:45,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541049463] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:01:45,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:01:45,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:01:45,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231552416] [2022-07-13 21:01:45,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:01:45,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:01:45,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:01:45,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:01:45,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:01:45,821 INFO L87 Difference]: Start difference. First operand 20778 states and 30194 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:47,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:01:47,043 INFO L93 Difference]: Finished difference Result 37740 states and 54963 transitions. [2022-07-13 21:01:47,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 21:01:47,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-07-13 21:01:47,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:01:47,069 INFO L225 Difference]: With dead ends: 37740 [2022-07-13 21:01:47,069 INFO L226 Difference]: Without dead ends: 20778 [2022-07-13 21:01:47,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:01:47,084 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 4872 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4872 SdHoareTripleChecker+Valid, 3090 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:01:47,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4872 Valid, 3090 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:01:47,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20778 states. [2022-07-13 21:01:48,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20778 to 20778. [2022-07-13 21:01:48,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20778 states, 20776 states have (on average 1.4440700808625337) internal successors, (30002), 20777 states have internal predecessors, (30002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:48,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20778 states to 20778 states and 30002 transitions. [2022-07-13 21:01:48,282 INFO L78 Accepts]: Start accepts. Automaton has 20778 states and 30002 transitions. Word has length 94 [2022-07-13 21:01:48,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:01:48,282 INFO L495 AbstractCegarLoop]: Abstraction has 20778 states and 30002 transitions. [2022-07-13 21:01:48,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:48,283 INFO L276 IsEmpty]: Start isEmpty. Operand 20778 states and 30002 transitions. [2022-07-13 21:01:48,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-13 21:01:48,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:01:48,283 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] [2022-07-13 21:01:48,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 21:01:48,284 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:01:48,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:01:48,284 INFO L85 PathProgramCache]: Analyzing trace with hash 847811530, now seen corresponding path program 1 times [2022-07-13 21:01:48,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:01:48,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096026173] [2022-07-13 21:01:48,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:01:48,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:01:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:01:48,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:01:48,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:01:48,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096026173] [2022-07-13 21:01:48,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096026173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:01:48,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:01:48,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:01:48,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239566497] [2022-07-13 21:01:48,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:01:48,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:01:48,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:01:48,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:01:48,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:01:48,342 INFO L87 Difference]: Start difference. First operand 20778 states and 30002 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:50,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:01:50,981 INFO L93 Difference]: Finished difference Result 35277 states and 50652 transitions. [2022-07-13 21:01:50,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:01:50,982 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-07-13 21:01:50,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:01:51,031 INFO L225 Difference]: With dead ends: 35277 [2022-07-13 21:01:51,032 INFO L226 Difference]: Without dead ends: 35275 [2022-07-13 21:01:51,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:01:51,044 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 820 mSDsluCounter, 9257 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 10890 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:01:51,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 10890 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:01:51,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35275 states. [2022-07-13 21:01:52,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35275 to 21546. [2022-07-13 21:01:52,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21546 states, 21544 states have (on average 1.425269216487189) internal successors, (30706), 21545 states have internal predecessors, (30706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:52,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21546 states to 21546 states and 30706 transitions. [2022-07-13 21:01:52,735 INFO L78 Accepts]: Start accepts. Automaton has 21546 states and 30706 transitions. Word has length 94 [2022-07-13 21:01:52,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:01:52,736 INFO L495 AbstractCegarLoop]: Abstraction has 21546 states and 30706 transitions. [2022-07-13 21:01:52,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:52,736 INFO L276 IsEmpty]: Start isEmpty. Operand 21546 states and 30706 transitions. [2022-07-13 21:01:52,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 21:01:52,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:01:52,746 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:01:52,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:01:52,746 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:01:52,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:01:52,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1754479322, now seen corresponding path program 1 times [2022-07-13 21:01:52,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:01:52,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611301121] [2022-07-13 21:01:52,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:01:52,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:01:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:01:52,775 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-13 21:01:52,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:01:52,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611301121] [2022-07-13 21:01:52,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611301121] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:01:52,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:01:52,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 21:01:52,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872950250] [2022-07-13 21:01:52,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:01:52,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:01:52,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:01:52,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:01:52,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:01:52,777 INFO L87 Difference]: Start difference. First operand 21546 states and 30706 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:56,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:01:56,680 INFO L93 Difference]: Finished difference Result 26054 states and 38089 transitions. [2022-07-13 21:01:56,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:01:56,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-07-13 21:01:56,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:01:56,714 INFO L225 Difference]: With dead ends: 26054 [2022-07-13 21:01:56,715 INFO L226 Difference]: Without dead ends: 23048 [2022-07-13 21:01:56,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:01:56,726 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 887 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:01:56,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 636 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 21:01:56,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23048 states. [2022-07-13 21:01:58,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23048 to 23048. [2022-07-13 21:01:58,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23048 states, 23046 states have (on average 1.415777141369435) internal successors, (32628), 23047 states have internal predecessors, (32628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:58,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23048 states to 23048 states and 32628 transitions. [2022-07-13 21:01:58,307 INFO L78 Accepts]: Start accepts. Automaton has 23048 states and 32628 transitions. Word has length 95 [2022-07-13 21:01:58,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:01:58,308 INFO L495 AbstractCegarLoop]: Abstraction has 23048 states and 32628 transitions. [2022-07-13 21:01:58,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:58,308 INFO L276 IsEmpty]: Start isEmpty. Operand 23048 states and 32628 transitions. [2022-07-13 21:01:58,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-13 21:01:58,319 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:01:58,320 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:01:58,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 21:01:58,320 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:01:58,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:01:58,320 INFO L85 PathProgramCache]: Analyzing trace with hash 101873069, now seen corresponding path program 1 times [2022-07-13 21:01:58,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:01:58,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848127277] [2022-07-13 21:01:58,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:01:58,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:01:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:01:58,408 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:01:58,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:01:58,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848127277] [2022-07-13 21:01:58,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848127277] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:01:58,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:01:58,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:01:58,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475187549] [2022-07-13 21:01:58,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:01:58,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:01:58,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:01:58,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:01:58,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:01:58,410 INFO L87 Difference]: Start difference. First operand 23048 states and 32628 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:09,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:02:09,211 INFO L93 Difference]: Finished difference Result 150616 states and 214364 transitions. [2022-07-13 21:02:09,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:02:09,212 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-07-13 21:02:09,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:02:09,450 INFO L225 Difference]: With dead ends: 150616 [2022-07-13 21:02:09,450 INFO L226 Difference]: Without dead ends: 132886 [2022-07-13 21:02:09,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:02:09,497 INFO L413 NwaCegarLoop]: 1697 mSDtfsCounter, 10767 mSDsluCounter, 2392 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10767 SdHoareTripleChecker+Valid, 4089 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:02:09,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10767 Valid, 4089 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:02:09,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132886 states. [2022-07-13 21:02:15,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132886 to 40776. [2022-07-13 21:02:15,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40776 states, 40774 states have (on average 1.4155098837494482) internal successors, (57716), 40775 states have internal predecessors, (57716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:15,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40776 states to 40776 states and 57716 transitions. [2022-07-13 21:02:15,337 INFO L78 Accepts]: Start accepts. Automaton has 40776 states and 57716 transitions. Word has length 130 [2022-07-13 21:02:15,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:02:15,338 INFO L495 AbstractCegarLoop]: Abstraction has 40776 states and 57716 transitions. [2022-07-13 21:02:15,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:15,339 INFO L276 IsEmpty]: Start isEmpty. Operand 40776 states and 57716 transitions. [2022-07-13 21:02:15,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-13 21:02:15,374 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:02:15,374 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:02:15,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 21:02:15,375 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:02:15,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:02:15,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1349380685, now seen corresponding path program 1 times [2022-07-13 21:02:15,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:02:15,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712209389] [2022-07-13 21:02:15,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:02:15,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:02:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:02:15,449 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 21:02:15,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:02:15,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712209389] [2022-07-13 21:02:15,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712209389] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:02:15,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:02:15,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:02:15,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665720002] [2022-07-13 21:02:15,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:02:15,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:02:15,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:02:15,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:02:15,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:02:15,452 INFO L87 Difference]: Start difference. First operand 40776 states and 57716 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:29,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:02:29,504 INFO L93 Difference]: Finished difference Result 168344 states and 239452 transitions. [2022-07-13 21:02:29,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:02:29,504 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-07-13 21:02:29,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:02:29,719 INFO L225 Difference]: With dead ends: 168344 [2022-07-13 21:02:29,720 INFO L226 Difference]: Without dead ends: 150614 [2022-07-13 21:02:29,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:02:29,759 INFO L413 NwaCegarLoop]: 1697 mSDtfsCounter, 10520 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10520 SdHoareTripleChecker+Valid, 4141 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:02:29,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10520 Valid, 4141 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:02:29,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150614 states. [2022-07-13 21:02:36,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150614 to 67400. [2022-07-13 21:02:36,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67400 states, 67398 states have (on average 1.4123267752752307) internal successors, (95188), 67399 states have internal predecessors, (95188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:36,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67400 states to 67400 states and 95188 transitions. [2022-07-13 21:02:36,760 INFO L78 Accepts]: Start accepts. Automaton has 67400 states and 95188 transitions. Word has length 130 [2022-07-13 21:02:36,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:02:36,760 INFO L495 AbstractCegarLoop]: Abstraction has 67400 states and 95188 transitions. [2022-07-13 21:02:36,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:36,760 INFO L276 IsEmpty]: Start isEmpty. Operand 67400 states and 95188 transitions. [2022-07-13 21:02:36,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-13 21:02:36,771 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:02:36,772 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:02:36,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 21:02:36,772 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:02:36,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:02:36,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1476153629, now seen corresponding path program 1 times [2022-07-13 21:02:36,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:02:36,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50173060] [2022-07-13 21:02:36,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:02:36,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:02:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:02:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 21:02:36,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:02:36,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50173060] [2022-07-13 21:02:36,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50173060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:02:36,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:02:36,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:02:36,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232172523] [2022-07-13 21:02:36,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:02:36,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:02:36,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:02:36,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:02:36,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:02:36,862 INFO L87 Difference]: Start difference. First operand 67400 states and 95188 transitions. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)