./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9722ff92ac7fe0a04a9fad473fb73ed6306a5571935abb587177743f8c4febdd --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 19:18:04,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 19:18:04,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 19:18:04,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 19:18:04,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 19:18:04,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 19:18:04,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 19:18:04,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 19:18:04,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 19:18:04,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 19:18:04,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 19:18:04,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 19:18:04,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 19:18:04,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 19:18:04,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 19:18:04,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 19:18:04,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 19:18:04,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 19:18:04,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 19:18:04,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 19:18:04,527 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 19:18:04,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 19:18:04,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 19:18:04,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 19:18:04,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 19:18:04,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 19:18:04,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 19:18:04,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 19:18:04,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 19:18:04,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 19:18:04,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 19:18:04,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 19:18:04,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 19:18:04,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 19:18:04,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 19:18:04,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 19:18:04,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 19:18:04,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 19:18:04,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 19:18:04,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 19:18:04,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 19:18:04,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 19:18:04,544 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 19:18:04,565 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 19:18:04,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 19:18:04,566 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 19:18:04,566 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 19:18:04,567 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 19:18:04,567 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 19:18:04,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 19:18:04,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 19:18:04,568 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 19:18:04,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 19:18:04,568 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 19:18:04,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 19:18:04,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 19:18:04,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 19:18:04,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 19:18:04,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 19:18:04,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 19:18:04,569 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 19:18:04,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 19:18:04,570 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 19:18:04,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 19:18:04,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 19:18:04,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 19:18:04,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 19:18:04,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:18:04,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 19:18:04,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 19:18:04,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 19:18:04,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 19:18:04,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 19:18:04,571 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 19:18:04,571 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 19:18:04,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 19:18:04,572 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9722ff92ac7fe0a04a9fad473fb73ed6306a5571935abb587177743f8c4febdd [2022-07-13 19:18:04,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 19:18:04,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 19:18:04,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 19:18:04,770 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 19:18:04,770 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 19:18:04,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-07-13 19:18:04,808 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8467b262e/f3c08676e3844e29904ac8b78d504ccb/FLAG32a7cf42a [2022-07-13 19:18:05,236 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 19:18:05,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-07-13 19:18:05,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8467b262e/f3c08676e3844e29904ac8b78d504ccb/FLAG32a7cf42a [2022-07-13 19:18:05,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8467b262e/f3c08676e3844e29904ac8b78d504ccb [2022-07-13 19:18:05,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 19:18:05,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 19:18:05,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 19:18:05,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 19:18:05,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 19:18:05,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:18:05" (1/1) ... [2022-07-13 19:18:05,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26c963c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:18:05, skipping insertion in model container [2022-07-13 19:18:05,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:18:05" (1/1) ... [2022-07-13 19:18:05,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 19:18:05,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 19:18:06,065 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[26802,26815] [2022-07-13 19:18:06,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:18:06,169 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 19:18:06,341 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[26802,26815] [2022-07-13 19:18:06,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:18:06,412 INFO L208 MainTranslator]: Completed translation [2022-07-13 19:18:06,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:18:06 WrapperNode [2022-07-13 19:18:06,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 19:18:06,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 19:18:06,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 19:18:06,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 19:18:06,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:18:06" (1/1) ... [2022-07-13 19:18:06,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:18:06" (1/1) ... [2022-07-13 19:18:06,489 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2394 [2022-07-13 19:18:06,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 19:18:06,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 19:18:06,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 19:18:06,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 19:18:06,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:18:06" (1/1) ... [2022-07-13 19:18:06,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:18:06" (1/1) ... [2022-07-13 19:18:06,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:18:06" (1/1) ... [2022-07-13 19:18:06,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:18:06" (1/1) ... [2022-07-13 19:18:06,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:18:06" (1/1) ... [2022-07-13 19:18:06,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:18:06" (1/1) ... [2022-07-13 19:18:06,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:18:06" (1/1) ... [2022-07-13 19:18:06,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 19:18:06,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 19:18:06,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 19:18:06,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 19:18:06,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:18:06" (1/1) ... [2022-07-13 19:18:06,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:18:06,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:18:06,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 19:18:06,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 19:18:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 19:18:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 19:18:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 19:18:06,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 19:18:06,795 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 19:18:06,796 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 19:18:07,810 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 19:18:07,818 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 19:18:07,819 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 19:18:07,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:18:07 BoogieIcfgContainer [2022-07-13 19:18:07,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 19:18:07,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 19:18:07,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 19:18:07,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 19:18:07,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 07:18:05" (1/3) ... [2022-07-13 19:18:07,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d50dd07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:18:07, skipping insertion in model container [2022-07-13 19:18:07,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:18:06" (2/3) ... [2022-07-13 19:18:07,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d50dd07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:18:07, skipping insertion in model container [2022-07-13 19:18:07,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:18:07" (3/3) ... [2022-07-13 19:18:07,843 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-07-13 19:18:07,852 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 19:18:07,854 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 19:18:07,921 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 19:18:07,926 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@7f73b14b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@28a5284a [2022-07-13 19:18:07,927 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 19:18:07,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 636 states, 634 states have (on average 1.7854889589905363) internal successors, (1132), 635 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:07,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-07-13 19:18:07,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:18:07,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:18:07,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:18:07,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:18:07,977 INFO L85 PathProgramCache]: Analyzing trace with hash 862105876, now seen corresponding path program 1 times [2022-07-13 19:18:07,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:18:07,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108576365] [2022-07-13 19:18:07,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:18:07,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:18:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:18:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:18:08,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:18:08,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108576365] [2022-07-13 19:18:08,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108576365] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:18:08,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:18:08,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:18:08,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819618859] [2022-07-13 19:18:08,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:18:08,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:18:08,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:18:08,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:18:08,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:18:08,443 INFO L87 Difference]: Start difference. First operand has 636 states, 634 states have (on average 1.7854889589905363) internal successors, (1132), 635 states have internal predecessors, (1132), 0 states have call successors, (0), 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 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:08,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:18:08,633 INFO L93 Difference]: Finished difference Result 1167 states and 2055 transitions. [2022-07-13 19:18:08,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:18:08,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246 [2022-07-13 19:18:08,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:18:08,660 INFO L225 Difference]: With dead ends: 1167 [2022-07-13 19:18:08,660 INFO L226 Difference]: Without dead ends: 972 [2022-07-13 19:18:08,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:18:08,666 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 662 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1953 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 19:18:08,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 1953 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 19:18:08,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2022-07-13 19:18:08,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 970. [2022-07-13 19:18:08,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 1.5820433436532508) internal successors, (1533), 969 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:08,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1533 transitions. [2022-07-13 19:18:08,776 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1533 transitions. Word has length 246 [2022-07-13 19:18:08,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:18:08,778 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1533 transitions. [2022-07-13 19:18:08,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:08,779 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1533 transitions. [2022-07-13 19:18:08,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-07-13 19:18:08,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:18:08,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:18:08,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 19:18:08,783 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:18:08,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:18:08,784 INFO L85 PathProgramCache]: Analyzing trace with hash 883598316, now seen corresponding path program 1 times [2022-07-13 19:18:08,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:18:08,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028488036] [2022-07-13 19:18:08,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:18:08,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:18:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:18:09,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:18:09,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:18:09,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028488036] [2022-07-13 19:18:09,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028488036] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:18:09,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:18:09,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 19:18:09,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288784461] [2022-07-13 19:18:09,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:18:09,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 19:18:09,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:18:09,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 19:18:09,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 19:18:09,159 INFO L87 Difference]: Start difference. First operand 970 states and 1533 transitions. Second operand has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:09,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:18:09,352 INFO L93 Difference]: Finished difference Result 2859 states and 4512 transitions. [2022-07-13 19:18:09,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 19:18:09,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246 [2022-07-13 19:18:09,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:18:09,361 INFO L225 Difference]: With dead ends: 2859 [2022-07-13 19:18:09,362 INFO L226 Difference]: Without dead ends: 1900 [2022-07-13 19:18:09,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:18:09,370 INFO L413 NwaCegarLoop]: 1412 mSDtfsCounter, 2375 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2375 SdHoareTripleChecker+Valid, 2350 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 19:18:09,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2375 Valid, 2350 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 19:18:09,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2022-07-13 19:18:09,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1898. [2022-07-13 19:18:09,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1898 states, 1897 states have (on average 1.5709014232999472) internal successors, (2980), 1897 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:09,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 2980 transitions. [2022-07-13 19:18:09,464 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 2980 transitions. Word has length 246 [2022-07-13 19:18:09,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:18:09,466 INFO L495 AbstractCegarLoop]: Abstraction has 1898 states and 2980 transitions. [2022-07-13 19:18:09,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:09,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 2980 transitions. [2022-07-13 19:18:09,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-07-13 19:18:09,470 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:18:09,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:18:09,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 19:18:09,473 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:18:09,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:18:09,479 INFO L85 PathProgramCache]: Analyzing trace with hash -233245184, now seen corresponding path program 1 times [2022-07-13 19:18:09,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:18:09,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644213226] [2022-07-13 19:18:09,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:18:09,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:18:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:18:09,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:18:09,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:18:09,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644213226] [2022-07-13 19:18:09,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644213226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:18:09,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:18:09,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:18:09,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773223474] [2022-07-13 19:18:09,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:18:09,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:18:09,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:18:09,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:18:09,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:18:09,617 INFO L87 Difference]: Start difference. First operand 1898 states and 2980 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:09,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:18:09,823 INFO L93 Difference]: Finished difference Result 5497 states and 8596 transitions. [2022-07-13 19:18:09,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:18:09,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 248 [2022-07-13 19:18:09,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:18:09,835 INFO L225 Difference]: With dead ends: 5497 [2022-07-13 19:18:09,835 INFO L226 Difference]: Without dead ends: 3724 [2022-07-13 19:18:09,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:18:09,841 INFO L413 NwaCegarLoop]: 1933 mSDtfsCounter, 860 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:18:09,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 2881 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:18:09,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3724 states. [2022-07-13 19:18:09,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3724 to 3722. [2022-07-13 19:18:09,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3722 states, 3721 states have (on average 1.5616769685568395) internal successors, (5811), 3721 states have internal predecessors, (5811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 5811 transitions. [2022-07-13 19:18:10,006 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 5811 transitions. Word has length 248 [2022-07-13 19:18:10,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:18:10,007 INFO L495 AbstractCegarLoop]: Abstraction has 3722 states and 5811 transitions. [2022-07-13 19:18:10,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:10,007 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 5811 transitions. [2022-07-13 19:18:10,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-07-13 19:18:10,013 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:18:10,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:18:10,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 19:18:10,013 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:18:10,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:18:10,014 INFO L85 PathProgramCache]: Analyzing trace with hash -170222651, now seen corresponding path program 1 times [2022-07-13 19:18:10,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:18:10,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545336655] [2022-07-13 19:18:10,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:18:10,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:18:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:18:10,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:18:10,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:18:10,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545336655] [2022-07-13 19:18:10,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545336655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:18:10,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:18:10,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:18:10,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511396298] [2022-07-13 19:18:10,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:18:10,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:18:10,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:18:10,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:18:10,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:18:10,106 INFO L87 Difference]: Start difference. First operand 3722 states and 5811 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:10,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:18:10,403 INFO L93 Difference]: Finished difference Result 11099 states and 17317 transitions. [2022-07-13 19:18:10,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:18:10,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 248 [2022-07-13 19:18:10,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:18:10,424 INFO L225 Difference]: With dead ends: 11099 [2022-07-13 19:18:10,424 INFO L226 Difference]: Without dead ends: 7415 [2022-07-13 19:18:10,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:18:10,435 INFO L413 NwaCegarLoop]: 1974 mSDtfsCounter, 984 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 2959 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:18:10,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 2959 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:18:10,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7415 states. [2022-07-13 19:18:10,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7415 to 3741. [2022-07-13 19:18:10,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3741 states, 3740 states have (on average 1.5612299465240642) internal successors, (5839), 3740 states have internal predecessors, (5839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:10,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3741 states to 3741 states and 5839 transitions. [2022-07-13 19:18:10,673 INFO L78 Accepts]: Start accepts. Automaton has 3741 states and 5839 transitions. Word has length 248 [2022-07-13 19:18:10,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:18:10,674 INFO L495 AbstractCegarLoop]: Abstraction has 3741 states and 5839 transitions. [2022-07-13 19:18:10,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:10,674 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states and 5839 transitions. [2022-07-13 19:18:10,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-07-13 19:18:10,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:18:10,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:18:10,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 19:18:10,681 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:18:10,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:18:10,681 INFO L85 PathProgramCache]: Analyzing trace with hash -992528260, now seen corresponding path program 1 times [2022-07-13 19:18:10,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:18:10,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146190402] [2022-07-13 19:18:10,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:18:10,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:18:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:18:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:18:10,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:18:10,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146190402] [2022-07-13 19:18:10,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146190402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:18:10,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:18:10,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:18:10,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095649006] [2022-07-13 19:18:10,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:18:10,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:18:10,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:18:10,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:18:10,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:18:10,733 INFO L87 Difference]: Start difference. First operand 3741 states and 5839 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:11,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:18:11,083 INFO L93 Difference]: Finished difference Result 11118 states and 17338 transitions. [2022-07-13 19:18:11,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:18:11,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 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 249 [2022-07-13 19:18:11,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:18:11,104 INFO L225 Difference]: With dead ends: 11118 [2022-07-13 19:18:11,104 INFO L226 Difference]: Without dead ends: 7433 [2022-07-13 19:18:11,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:18:11,109 INFO L413 NwaCegarLoop]: 1974 mSDtfsCounter, 979 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 2959 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:18:11,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 2959 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:18:11,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7433 states. [2022-07-13 19:18:11,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7433 to 3759. [2022-07-13 19:18:11,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3758 states have (on average 1.5593400745077168) internal successors, (5860), 3758 states have internal predecessors, (5860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:11,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 5860 transitions. [2022-07-13 19:18:11,367 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 5860 transitions. Word has length 249 [2022-07-13 19:18:11,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:18:11,369 INFO L495 AbstractCegarLoop]: Abstraction has 3759 states and 5860 transitions. [2022-07-13 19:18:11,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:11,371 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 5860 transitions. [2022-07-13 19:18:11,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-07-13 19:18:11,376 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:18:11,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:18:11,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 19:18:11,376 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:18:11,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:18:11,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1666542812, now seen corresponding path program 1 times [2022-07-13 19:18:11,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:18:11,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778566799] [2022-07-13 19:18:11,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:18:11,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:18:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:18:11,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:18:11,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:18:11,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778566799] [2022-07-13 19:18:11,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778566799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:18:11,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:18:11,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:18:11,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079788458] [2022-07-13 19:18:11,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:18:11,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:18:11,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:18:11,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:18:11,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:18:11,450 INFO L87 Difference]: Start difference. First operand 3759 states and 5860 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:11,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:18:11,726 INFO L93 Difference]: Finished difference Result 8393 states and 13180 transitions. [2022-07-13 19:18:11,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:18:11,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 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 250 [2022-07-13 19:18:11,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:18:11,750 INFO L225 Difference]: With dead ends: 8393 [2022-07-13 19:18:11,751 INFO L226 Difference]: Without dead ends: 5453 [2022-07-13 19:18:11,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:18:11,756 INFO L413 NwaCegarLoop]: 1344 mSDtfsCounter, 536 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:18:11,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 2127 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:18:11,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5453 states. [2022-07-13 19:18:11,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5453 to 4735. [2022-07-13 19:18:12,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4735 states, 4734 states have (on average 1.5804816223067173) internal successors, (7482), 4734 states have internal predecessors, (7482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:12,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4735 states to 4735 states and 7482 transitions. [2022-07-13 19:18:12,012 INFO L78 Accepts]: Start accepts. Automaton has 4735 states and 7482 transitions. Word has length 250 [2022-07-13 19:18:12,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:18:12,013 INFO L495 AbstractCegarLoop]: Abstraction has 4735 states and 7482 transitions. [2022-07-13 19:18:12,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:12,013 INFO L276 IsEmpty]: Start isEmpty. Operand 4735 states and 7482 transitions. [2022-07-13 19:18:12,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-07-13 19:18:12,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:18:12,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:18:12,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 19:18:12,018 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:18:12,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:18:12,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1293164104, now seen corresponding path program 1 times [2022-07-13 19:18:12,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:18:12,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805053779] [2022-07-13 19:18:12,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:18:12,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:18:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:18:12,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:18:12,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:18:12,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805053779] [2022-07-13 19:18:12,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805053779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:18:12,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:18:12,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 19:18:12,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482613430] [2022-07-13 19:18:12,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:18:12,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 19:18:12,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:18:12,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 19:18:12,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:18:12,175 INFO L87 Difference]: Start difference. First operand 4735 states and 7482 transitions. Second operand has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:12,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:18:12,744 INFO L93 Difference]: Finished difference Result 13810 states and 21799 transitions. [2022-07-13 19:18:12,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 19:18:12,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 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 250 [2022-07-13 19:18:12,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:18:12,762 INFO L225 Difference]: With dead ends: 13810 [2022-07-13 19:18:12,762 INFO L226 Difference]: Without dead ends: 9118 [2022-07-13 19:18:12,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:18:12,770 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 2254 mSDsluCounter, 1872 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2254 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 19:18:12,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2254 Valid, 3479 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 19:18:12,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9118 states. [2022-07-13 19:18:13,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9118 to 9116. [2022-07-13 19:18:13,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9116 states, 9115 states have (on average 1.5686231486560613) internal successors, (14298), 9115 states have internal predecessors, (14298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:13,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9116 states to 9116 states and 14298 transitions. [2022-07-13 19:18:13,285 INFO L78 Accepts]: Start accepts. Automaton has 9116 states and 14298 transitions. Word has length 250 [2022-07-13 19:18:13,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:18:13,285 INFO L495 AbstractCegarLoop]: Abstraction has 9116 states and 14298 transitions. [2022-07-13 19:18:13,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:13,286 INFO L276 IsEmpty]: Start isEmpty. Operand 9116 states and 14298 transitions. [2022-07-13 19:18:13,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-07-13 19:18:13,294 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:18:13,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:18:13,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 19:18:13,295 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:18:13,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:18:13,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1846138798, now seen corresponding path program 1 times [2022-07-13 19:18:13,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:18:13,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060062049] [2022-07-13 19:18:13,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:18:13,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:18:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:18:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:18:13,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:18:13,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060062049] [2022-07-13 19:18:13,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060062049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:18:13,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:18:13,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 19:18:13,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909263422] [2022-07-13 19:18:13,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:18:13,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 19:18:13,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:18:13,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 19:18:13,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 19:18:13,422 INFO L87 Difference]: Start difference. First operand 9116 states and 14298 transitions. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:14,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:18:14,451 INFO L93 Difference]: Finished difference Result 26764 states and 41934 transitions. [2022-07-13 19:18:14,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 19:18:14,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 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 252 [2022-07-13 19:18:14,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:18:14,483 INFO L225 Difference]: With dead ends: 26764 [2022-07-13 19:18:14,483 INFO L226 Difference]: Without dead ends: 17774 [2022-07-13 19:18:14,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:18:14,495 INFO L413 NwaCegarLoop]: 1380 mSDtfsCounter, 2317 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2317 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:18:14,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2317 Valid, 2315 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:18:14,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17774 states. [2022-07-13 19:18:15,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17774 to 17772. [2022-07-13 19:18:15,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17772 states, 17771 states have (on average 1.5587192617185301) internal successors, (27700), 17771 states have internal predecessors, (27700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:15,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17772 states to 17772 states and 27700 transitions. [2022-07-13 19:18:15,704 INFO L78 Accepts]: Start accepts. Automaton has 17772 states and 27700 transitions. Word has length 252 [2022-07-13 19:18:15,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:18:15,704 INFO L495 AbstractCegarLoop]: Abstraction has 17772 states and 27700 transitions. [2022-07-13 19:18:15,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:15,704 INFO L276 IsEmpty]: Start isEmpty. Operand 17772 states and 27700 transitions. [2022-07-13 19:18:15,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-13 19:18:15,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:18:15,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:18:15,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 19:18:15,720 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:18:15,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:18:15,721 INFO L85 PathProgramCache]: Analyzing trace with hash -949156679, now seen corresponding path program 1 times [2022-07-13 19:18:15,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:18:15,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105715326] [2022-07-13 19:18:15,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:18:15,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:18:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:18:15,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:18:15,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:18:15,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105715326] [2022-07-13 19:18:15,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105715326] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:18:15,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:18:15,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:18:15,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848957920] [2022-07-13 19:18:15,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:18:15,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:18:15,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:18:15,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:18:15,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:18:15,780 INFO L87 Difference]: Start difference. First operand 17772 states and 27700 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:17,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:18:17,787 INFO L93 Difference]: Finished difference Result 52018 states and 80928 transitions. [2022-07-13 19:18:17,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:18:17,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 254 [2022-07-13 19:18:17,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:18:17,887 INFO L225 Difference]: With dead ends: 52018 [2022-07-13 19:18:17,887 INFO L226 Difference]: Without dead ends: 34760 [2022-07-13 19:18:17,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:18:17,913 INFO L413 NwaCegarLoop]: 1890 mSDtfsCounter, 831 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:18:17,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 2835 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:18:17,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34760 states. [2022-07-13 19:18:20,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34760 to 34758. [2022-07-13 19:18:20,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34758 states, 34757 states have (on average 1.5497309894409759) internal successors, (53864), 34757 states have internal predecessors, (53864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:20,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34758 states to 34758 states and 53864 transitions. [2022-07-13 19:18:20,301 INFO L78 Accepts]: Start accepts. Automaton has 34758 states and 53864 transitions. Word has length 254 [2022-07-13 19:18:20,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:18:20,301 INFO L495 AbstractCegarLoop]: Abstraction has 34758 states and 53864 transitions. [2022-07-13 19:18:20,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:20,301 INFO L276 IsEmpty]: Start isEmpty. Operand 34758 states and 53864 transitions. [2022-07-13 19:18:20,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-13 19:18:20,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:18:20,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:18:20,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 19:18:20,330 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:18:20,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:18:20,330 INFO L85 PathProgramCache]: Analyzing trace with hash 263955006, now seen corresponding path program 1 times [2022-07-13 19:18:20,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:18:20,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404762144] [2022-07-13 19:18:20,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:18:20,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:18:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:18:20,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:18:20,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:18:20,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404762144] [2022-07-13 19:18:20,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404762144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:18:20,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:18:20,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:18:20,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505995340] [2022-07-13 19:18:20,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:18:20,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:18:20,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:18:20,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:18:20,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:18:20,365 INFO L87 Difference]: Start difference. First operand 34758 states and 53864 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:25,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:18:25,102 INFO L93 Difference]: Finished difference Result 103784 states and 160794 transitions. [2022-07-13 19:18:25,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:18:25,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 254 [2022-07-13 19:18:25,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:18:25,247 INFO L225 Difference]: With dead ends: 103784 [2022-07-13 19:18:25,247 INFO L226 Difference]: Without dead ends: 69298 [2022-07-13 19:18:25,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:18:25,286 INFO L413 NwaCegarLoop]: 1935 mSDtfsCounter, 948 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2917 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:18:25,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 2917 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:18:25,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69298 states. [2022-07-13 19:18:28,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69298 to 34872. [2022-07-13 19:18:28,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34872 states, 34871 states have (on average 1.5494823779071434) internal successors, (54032), 34871 states have internal predecessors, (54032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:28,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34872 states to 34872 states and 54032 transitions. [2022-07-13 19:18:28,271 INFO L78 Accepts]: Start accepts. Automaton has 34872 states and 54032 transitions. Word has length 254 [2022-07-13 19:18:28,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:18:28,272 INFO L495 AbstractCegarLoop]: Abstraction has 34872 states and 54032 transitions. [2022-07-13 19:18:28,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:28,272 INFO L276 IsEmpty]: Start isEmpty. Operand 34872 states and 54032 transitions. [2022-07-13 19:18:28,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-07-13 19:18:28,312 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:18:28,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:18:28,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 19:18:28,313 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:18:28,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:18:28,314 INFO L85 PathProgramCache]: Analyzing trace with hash -983300515, now seen corresponding path program 1 times [2022-07-13 19:18:28,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:18:28,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299887364] [2022-07-13 19:18:28,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:18:28,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:18:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:18:28,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:18:28,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:18:28,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299887364] [2022-07-13 19:18:28,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299887364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:18:28,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:18:28,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:18:28,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424017952] [2022-07-13 19:18:28,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:18:28,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:18:28,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:18:28,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:18:28,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:18:28,365 INFO L87 Difference]: Start difference. First operand 34872 states and 54032 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:33,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:18:33,328 INFO L93 Difference]: Finished difference Result 103846 states and 160832 transitions. [2022-07-13 19:18:33,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:18:33,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 255 [2022-07-13 19:18:33,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:18:33,517 INFO L225 Difference]: With dead ends: 103846 [2022-07-13 19:18:33,517 INFO L226 Difference]: Without dead ends: 69394 [2022-07-13 19:18:33,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:18:33,559 INFO L413 NwaCegarLoop]: 1935 mSDtfsCounter, 943 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 2917 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:18:33,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 2917 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:18:33,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69394 states. [2022-07-13 19:18:36,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69394 to 34968. [2022-07-13 19:18:36,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34968 states, 34967 states have (on average 1.548374181371007) internal successors, (54142), 34967 states have internal predecessors, (54142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:36,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34968 states to 34968 states and 54142 transitions. [2022-07-13 19:18:36,682 INFO L78 Accepts]: Start accepts. Automaton has 34968 states and 54142 transitions. Word has length 255 [2022-07-13 19:18:36,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:18:36,683 INFO L495 AbstractCegarLoop]: Abstraction has 34968 states and 54142 transitions. [2022-07-13 19:18:36,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:36,683 INFO L276 IsEmpty]: Start isEmpty. Operand 34968 states and 54142 transitions. [2022-07-13 19:18:36,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-07-13 19:18:36,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:18:36,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:18:36,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 19:18:36,725 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:18:36,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:18:36,725 INFO L85 PathProgramCache]: Analyzing trace with hash 992207840, now seen corresponding path program 1 times [2022-07-13 19:18:36,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:18:36,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620196418] [2022-07-13 19:18:36,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:18:36,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:18:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:18:36,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:18:36,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:18:36,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620196418] [2022-07-13 19:18:36,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620196418] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:18:36,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:18:36,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:18:36,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199525005] [2022-07-13 19:18:36,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:18:36,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:18:36,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:18:36,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:18:36,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:18:36,793 INFO L87 Difference]: Start difference. First operand 34968 states and 54142 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 19:18:41,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:18:41,101 INFO L93 Difference]: Finished difference Result 82260 states and 129016 transitions. [2022-07-13 19:18:41,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:18:41,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 256 [2022-07-13 19:18:41,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:18:41,185 INFO L225 Difference]: With dead ends: 82260 [2022-07-13 19:18:41,186 INFO L226 Difference]: Without dead ends: 53402 [2022-07-13 19:18:41,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:18:41,212 INFO L413 NwaCegarLoop]: 1326 mSDtfsCounter, 527 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:18:41,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 2095 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:18:41,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53402 states.