./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.UNBOUNDED.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 883e1ef2a948697d12588312fbc96d1f19bb97cf9b1fde4627b6f04bc3bcbaed --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:00:54,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:00:54,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:00:54,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:00:54,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:00:54,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:00:54,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:00:54,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:00:54,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:00:54,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:00:54,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:00:54,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:00:54,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:00:54,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:00:54,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:00:54,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:00:54,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:00:54,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:00:54,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:00:54,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:00:54,538 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:00:54,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:00:54,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:00:54,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:00:54,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:00:54,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:00:54,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:00:54,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:00:54,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:00:54,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:00:54,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:00:54,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:00:54,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:00:54,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:00:54,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:00:54,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:00:54,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:00:54,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:00:54,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:00:54,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:00:54,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:00:54,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:00:54,562 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:00:54,597 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:00:54,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:00:54,598 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:00:54,599 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:00:54,604 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:00:54,604 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:00:54,605 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:00:54,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:00:54,605 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:00:54,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:00:54,607 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:00:54,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:00:54,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:00:54,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:00:54,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:00:54,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:00:54,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:00:54,608 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:00:54,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:00:54,608 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:00:54,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:00:54,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:00:54,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:00:54,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:00:54,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:00:54,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:00:54,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:00:54,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:00:54,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:00:54,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:00:54,612 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:00:54,612 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:00:54,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:00:54,613 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 883e1ef2a948697d12588312fbc96d1f19bb97cf9b1fde4627b6f04bc3bcbaed [2022-07-22 18:00:54,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:00:54,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:00:54,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:00:54,916 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:00:54,917 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:00:54,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.UNBOUNDED.pals.c [2022-07-22 18:00:54,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeb361287/544c7230458b40a496a895730b97675b/FLAG16f65a191 [2022-07-22 18:00:55,565 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:00:55,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.UNBOUNDED.pals.c [2022-07-22 18:00:55,589 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeb361287/544c7230458b40a496a895730b97675b/FLAG16f65a191 [2022-07-22 18:00:55,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeb361287/544c7230458b40a496a895730b97675b [2022-07-22 18:00:55,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:00:55,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:00:55,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:00:55,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:00:55,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:00:55,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:00:55" (1/1) ... [2022-07-22 18:00:55,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@473fb30c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:55, skipping insertion in model container [2022-07-22 18:00:55,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:00:55" (1/1) ... [2022-07-22 18:00:55,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:00:55,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:00:56,338 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.UNBOUNDED.pals.c[52225,52238] [2022-07-22 18:00:56,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:00:56,349 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:00:56,510 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.UNBOUNDED.pals.c[52225,52238] [2022-07-22 18:00:56,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:00:56,529 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:00:56,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:56 WrapperNode [2022-07-22 18:00:56,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:00:56,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:00:56,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:00:56,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:00:56,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:56" (1/1) ... [2022-07-22 18:00:56,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:56" (1/1) ... [2022-07-22 18:00:56,634 INFO L137 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 2013 [2022-07-22 18:00:56,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:00:56,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:00:56,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:00:56,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:00:56,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:56" (1/1) ... [2022-07-22 18:00:56,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:56" (1/1) ... [2022-07-22 18:00:56,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:56" (1/1) ... [2022-07-22 18:00:56,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:56" (1/1) ... [2022-07-22 18:00:56,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:56" (1/1) ... [2022-07-22 18:00:56,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:56" (1/1) ... [2022-07-22 18:00:56,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:56" (1/1) ... [2022-07-22 18:00:56,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:00:56,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:00:56,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:00:56,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:00:56,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:56" (1/1) ... [2022-07-22 18:00:56,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:00:56,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:00:56,798 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) [2022-07-22 18:00:56,823 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 [2022-07-22 18:00:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:00:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:00:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:00:56,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:00:57,109 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:00:57,112 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:00:58,470 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:00:58,489 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:00:58,489 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 18:00:58,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:00:58 BoogieIcfgContainer [2022-07-22 18:00:58,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:00:58,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:00:58,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:00:58,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:00:58,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:00:55" (1/3) ... [2022-07-22 18:00:58,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406155e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:00:58, skipping insertion in model container [2022-07-22 18:00:58,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:56" (2/3) ... [2022-07-22 18:00:58,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406155e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:00:58, skipping insertion in model container [2022-07-22 18:00:58,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:00:58" (3/3) ... [2022-07-22 18:00:58,503 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.1.ufo.UNBOUNDED.pals.c [2022-07-22 18:00:58,516 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:00:58,516 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:00:58,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:00:58,580 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@5fa03141, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6c3b1315 [2022-07-22 18:00:58,581 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:00:58,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 696 states, 694 states have (on average 1.84149855907781) internal successors, (1278), 695 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:58,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-22 18:00:58,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:00:58,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:00:58,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:00:58,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:00:58,630 INFO L85 PathProgramCache]: Analyzing trace with hash 703858837, now seen corresponding path program 1 times [2022-07-22 18:00:58,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:00:58,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701830058] [2022-07-22 18:00:58,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:58,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:00:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:59,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:00:59,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:00:59,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701830058] [2022-07-22 18:00:59,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701830058] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:00:59,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:00:59,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 18:00:59,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35331621] [2022-07-22 18:00:59,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:00:59,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 18:00:59,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:00:59,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 18:00:59,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 18:00:59,179 INFO L87 Difference]: Start difference. First operand has 696 states, 694 states have (on average 1.84149855907781) internal successors, (1278), 695 states have internal predecessors, (1278), 0 states have call successors, (0), 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 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:59,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:00:59,248 INFO L93 Difference]: Finished difference Result 863 states and 1567 transitions. [2022-07-22 18:00:59,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 18:00:59,251 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2022-07-22 18:00:59,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:00:59,273 INFO L225 Difference]: With dead ends: 863 [2022-07-22 18:00:59,274 INFO L226 Difference]: Without dead ends: 692 [2022-07-22 18:00:59,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 18:00:59,282 INFO L413 NwaCegarLoop]: 1271 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:00:59,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:00:59,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-07-22 18:00:59,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2022-07-22 18:00:59,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 1.8393632416787264) internal successors, (1271), 691 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:59,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1271 transitions. [2022-07-22 18:00:59,417 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1271 transitions. Word has length 153 [2022-07-22 18:00:59,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:00:59,420 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 1271 transitions. [2022-07-22 18:00:59,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:59,421 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1271 transitions. [2022-07-22 18:00:59,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-22 18:00:59,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:00:59,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:00:59,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:00:59,427 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:00:59,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:00:59,428 INFO L85 PathProgramCache]: Analyzing trace with hash 194385747, now seen corresponding path program 1 times [2022-07-22 18:00:59,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:00:59,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862430413] [2022-07-22 18:00:59,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:59,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:00:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:00:59,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:00:59,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862430413] [2022-07-22 18:00:59,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862430413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:00:59,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:00:59,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:00:59,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130031619] [2022-07-22 18:00:59,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:00:59,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:00:59,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:00:59,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:00:59,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:00:59,643 INFO L87 Difference]: Start difference. First operand 692 states and 1271 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:59,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:00:59,760 INFO L93 Difference]: Finished difference Result 862 states and 1560 transitions. [2022-07-22 18:00:59,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:00:59,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2022-07-22 18:00:59,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:00:59,764 INFO L225 Difference]: With dead ends: 862 [2022-07-22 18:00:59,765 INFO L226 Difference]: Without dead ends: 692 [2022-07-22 18:00:59,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:00:59,767 INFO L413 NwaCegarLoop]: 1269 mSDtfsCounter, 3 mSDsluCounter, 3764 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5033 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:00:59,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5033 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:00:59,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-07-22 18:00:59,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2022-07-22 18:00:59,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 1.7814761215629522) internal successors, (1231), 691 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:59,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1231 transitions. [2022-07-22 18:00:59,784 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1231 transitions. Word has length 153 [2022-07-22 18:00:59,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:00:59,785 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 1231 transitions. [2022-07-22 18:00:59,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:59,785 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1231 transitions. [2022-07-22 18:00:59,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-22 18:00:59,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:00:59,789 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] [2022-07-22 18:00:59,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:00:59,792 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:00:59,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:00:59,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1935208052, now seen corresponding path program 1 times [2022-07-22 18:00:59,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:00:59,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321734530] [2022-07-22 18:00:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:59,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:00:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:01:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:01:00,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:01:00,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321734530] [2022-07-22 18:01:00,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321734530] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:01:00,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:01:00,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:01:00,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084551919] [2022-07-22 18:01:00,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:01:00,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:01:00,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:01:00,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:01:00,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:01:00,005 INFO L87 Difference]: Start difference. First operand 692 states and 1231 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:00,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:01:00,058 INFO L93 Difference]: Finished difference Result 1011 states and 1776 transitions. [2022-07-22 18:01:00,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:01:00,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2022-07-22 18:01:00,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:01:00,063 INFO L225 Difference]: With dead ends: 1011 [2022-07-22 18:01:00,063 INFO L226 Difference]: Without dead ends: 845 [2022-07-22 18:01:00,064 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 [2022-07-22 18:01:00,065 INFO L413 NwaCegarLoop]: 1225 mSDtfsCounter, 251 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 2410 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:01:00,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 2410 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:01:00,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-07-22 18:01:00,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 842. [2022-07-22 18:01:00,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 1.7633769322235433) internal successors, (1483), 841 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:00,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1483 transitions. [2022-07-22 18:01:00,088 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1483 transitions. Word has length 192 [2022-07-22 18:01:00,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:01:00,088 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1483 transitions. [2022-07-22 18:01:00,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:00,089 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1483 transitions. [2022-07-22 18:01:00,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-22 18:01:00,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:01:00,092 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] [2022-07-22 18:01:00,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:01:00,093 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:01:00,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:01:00,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1135632720, now seen corresponding path program 1 times [2022-07-22 18:01:00,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:01:00,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634476684] [2022-07-22 18:01:00,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:01:00,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:01:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:01:00,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:01:00,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:01:00,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634476684] [2022-07-22 18:01:00,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634476684] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:01:00,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:01:00,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:01:00,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364888315] [2022-07-22 18:01:00,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:01:00,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:01:00,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:01:00,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:01:00,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:01:00,217 INFO L87 Difference]: Start difference. First operand 842 states and 1483 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:00,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:01:00,262 INFO L93 Difference]: Finished difference Result 1452 states and 2515 transitions. [2022-07-22 18:01:00,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:01:00,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 196 [2022-07-22 18:01:00,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:01:00,268 INFO L225 Difference]: With dead ends: 1452 [2022-07-22 18:01:00,269 INFO L226 Difference]: Without dead ends: 1136 [2022-07-22 18:01:00,270 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 [2022-07-22 18:01:00,271 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 251 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:01:00,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 2422 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:01:00,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2022-07-22 18:01:00,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1132. [2022-07-22 18:01:00,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 1131 states have (on average 1.742705570291777) internal successors, (1971), 1131 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:00,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1971 transitions. [2022-07-22 18:01:00,302 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1971 transitions. Word has length 196 [2022-07-22 18:01:00,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:01:00,303 INFO L495 AbstractCegarLoop]: Abstraction has 1132 states and 1971 transitions. [2022-07-22 18:01:00,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:00,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1971 transitions. [2022-07-22 18:01:00,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-22 18:01:00,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:01:00,334 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] [2022-07-22 18:01:00,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:01:00,334 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:01:00,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:01:00,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1111199852, now seen corresponding path program 1 times [2022-07-22 18:01:00,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:01:00,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108631311] [2022-07-22 18:01:00,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:01:00,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:01:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:01:00,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:01:00,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:01:00,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108631311] [2022-07-22 18:01:00,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108631311] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:01:00,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:01:00,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:01:00,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834442788] [2022-07-22 18:01:00,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:01:00,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:01:00,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:01:00,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:01:00,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:01:00,463 INFO L87 Difference]: Start difference. First operand 1132 states and 1971 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:00,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:01:00,512 INFO L93 Difference]: Finished difference Result 2300 states and 3937 transitions. [2022-07-22 18:01:00,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:01:00,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2022-07-22 18:01:00,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:01:00,520 INFO L225 Difference]: With dead ends: 2300 [2022-07-22 18:01:00,521 INFO L226 Difference]: Without dead ends: 1694 [2022-07-22 18:01:00,522 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 [2022-07-22 18:01:00,523 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 243 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:01:00,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 2423 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:01:00,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2022-07-22 18:01:00,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1688. [2022-07-22 18:01:00,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1687 states have (on average 1.7184350918790752) internal successors, (2899), 1687 states have internal predecessors, (2899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:00,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2899 transitions. [2022-07-22 18:01:00,568 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2899 transitions. Word has length 200 [2022-07-22 18:01:00,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:01:00,568 INFO L495 AbstractCegarLoop]: Abstraction has 1688 states and 2899 transitions. [2022-07-22 18:01:00,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:00,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2899 transitions. [2022-07-22 18:01:00,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-07-22 18:01:00,573 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:01:00,573 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] [2022-07-22 18:01:00,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:01:00,574 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:01:00,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:01:00,574 INFO L85 PathProgramCache]: Analyzing trace with hash -224298040, now seen corresponding path program 1 times [2022-07-22 18:01:00,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:01:00,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023714068] [2022-07-22 18:01:00,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:01:00,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:01:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:01:00,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:01:00,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:01:00,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023714068] [2022-07-22 18:01:00,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023714068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:01:00,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:01:00,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:01:00,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291017335] [2022-07-22 18:01:00,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:01:00,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:01:00,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:01:00,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:01:00,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:01:00,708 INFO L87 Difference]: Start difference. First operand 1688 states and 2899 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:00,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:01:00,780 INFO L93 Difference]: Finished difference Result 3924 states and 6637 transitions. [2022-07-22 18:01:00,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:01:00,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 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 204 [2022-07-22 18:01:00,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:01:00,792 INFO L225 Difference]: With dead ends: 3924 [2022-07-22 18:01:00,792 INFO L226 Difference]: Without dead ends: 2762 [2022-07-22 18:01:00,795 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 [2022-07-22 18:01:00,796 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 235 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:01:00,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 2424 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:01:00,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2022-07-22 18:01:00,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 2752. [2022-07-22 18:01:00,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2752 states, 2751 states have (on average 1.693565976008724) internal successors, (4659), 2751 states have internal predecessors, (4659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:00,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 4659 transitions. [2022-07-22 18:01:00,884 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 4659 transitions. Word has length 204 [2022-07-22 18:01:00,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:01:00,885 INFO L495 AbstractCegarLoop]: Abstraction has 2752 states and 4659 transitions. [2022-07-22 18:01:00,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:00,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 4659 transitions. [2022-07-22 18:01:00,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-22 18:01:00,891 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:01:00,891 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] [2022-07-22 18:01:00,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:01:00,892 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:01:00,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:01:00,892 INFO L85 PathProgramCache]: Analyzing trace with hash -107404444, now seen corresponding path program 1 times [2022-07-22 18:01:00,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:01:00,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112778748] [2022-07-22 18:01:00,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:01:00,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:01:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:01:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:01:01,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:01:01,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112778748] [2022-07-22 18:01:01,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112778748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:01:01,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:01:01,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:01:01,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839728581] [2022-07-22 18:01:01,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:01:01,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:01:01,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:01:01,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:01:01,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:01:01,008 INFO L87 Difference]: Start difference. First operand 2752 states and 4659 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:01,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:01:01,139 INFO L93 Difference]: Finished difference Result 7028 states and 11749 transitions. [2022-07-22 18:01:01,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:01:01,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 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 208 [2022-07-22 18:01:01,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:01:01,158 INFO L225 Difference]: With dead ends: 7028 [2022-07-22 18:01:01,158 INFO L226 Difference]: Without dead ends: 4802 [2022-07-22 18:01:01,163 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 [2022-07-22 18:01:01,163 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 227 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:01:01,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 2425 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:01:01,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4802 states. [2022-07-22 18:01:01,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4802 to 4784. [2022-07-22 18:01:01,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4784 states, 4783 states have (on average 1.669872464980138) internal successors, (7987), 4783 states have internal predecessors, (7987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:01,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4784 states to 4784 states and 7987 transitions. [2022-07-22 18:01:01,316 INFO L78 Accepts]: Start accepts. Automaton has 4784 states and 7987 transitions. Word has length 208 [2022-07-22 18:01:01,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:01:01,316 INFO L495 AbstractCegarLoop]: Abstraction has 4784 states and 7987 transitions. [2022-07-22 18:01:01,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:01,317 INFO L276 IsEmpty]: Start isEmpty. Operand 4784 states and 7987 transitions. [2022-07-22 18:01:01,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-22 18:01:01,322 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:01:01,322 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] [2022-07-22 18:01:01,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:01:01,323 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:01:01,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:01:01,323 INFO L85 PathProgramCache]: Analyzing trace with hash -588675264, now seen corresponding path program 1 times [2022-07-22 18:01:01,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:01:01,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220274767] [2022-07-22 18:01:01,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:01:01,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:01:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:01:01,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:01:01,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:01:01,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220274767] [2022-07-22 18:01:01,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220274767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:01:01,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:01:01,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 18:01:01,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121576881] [2022-07-22 18:01:01,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:01:01,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:01:01,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:01:01,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:01:01,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:01:01,447 INFO L87 Difference]: Start difference. First operand 4784 states and 7987 transitions. Second operand has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:02,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:01:02,400 INFO L93 Difference]: Finished difference Result 28980 states and 48413 transitions. [2022-07-22 18:01:02,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 18:01:02,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 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 212 [2022-07-22 18:01:02,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:01:02,487 INFO L225 Difference]: With dead ends: 28980 [2022-07-22 18:01:02,487 INFO L226 Difference]: Without dead ends: 24722 [2022-07-22 18:01:02,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-22 18:01:02,503 INFO L413 NwaCegarLoop]: 1227 mSDtfsCounter, 3173 mSDsluCounter, 10122 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3173 SdHoareTripleChecker+Valid, 11349 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:01:02,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3173 Valid, 11349 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:01:02,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24722 states. [2022-07-22 18:01:02,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24722 to 8878. [2022-07-22 18:01:03,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8878 states, 8877 states have (on average 1.6613720851639067) internal successors, (14748), 8877 states have internal predecessors, (14748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:03,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8878 states to 8878 states and 14748 transitions. [2022-07-22 18:01:03,027 INFO L78 Accepts]: Start accepts. Automaton has 8878 states and 14748 transitions. Word has length 212 [2022-07-22 18:01:03,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:01:03,028 INFO L495 AbstractCegarLoop]: Abstraction has 8878 states and 14748 transitions. [2022-07-22 18:01:03,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:03,029 INFO L276 IsEmpty]: Start isEmpty. Operand 8878 states and 14748 transitions. [2022-07-22 18:01:03,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-22 18:01:03,035 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:01:03,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:01:03,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:01:03,036 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:01:03,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:01:03,036 INFO L85 PathProgramCache]: Analyzing trace with hash 959523782, now seen corresponding path program 1 times [2022-07-22 18:01:03,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:01:03,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818255593] [2022-07-22 18:01:03,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:01:03,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:01:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:01:03,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:01:03,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:01:03,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818255593] [2022-07-22 18:01:03,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818255593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:01:03,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:01:03,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:01:03,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183733900] [2022-07-22 18:01:03,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:01:03,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:01:03,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:01:03,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:01:03,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:01:03,199 INFO L87 Difference]: Start difference. First operand 8878 states and 14748 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:03,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:01:03,684 INFO L93 Difference]: Finished difference Result 25962 states and 43216 transitions. [2022-07-22 18:01:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:01:03,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2022-07-22 18:01:03,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:01:03,731 INFO L225 Difference]: With dead ends: 25962 [2022-07-22 18:01:03,731 INFO L226 Difference]: Without dead ends: 17610 [2022-07-22 18:01:03,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:01:03,747 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 821 mSDsluCounter, 2672 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 3896 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:01:03,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 3896 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:01:03,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17610 states. [2022-07-22 18:01:04,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17610 to 13211. [2022-07-22 18:01:04,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13211 states, 13210 states have (on average 1.6620741862225588) internal successors, (21956), 13210 states have internal predecessors, (21956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:04,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13211 states to 13211 states and 21956 transitions. [2022-07-22 18:01:04,233 INFO L78 Accepts]: Start accepts. Automaton has 13211 states and 21956 transitions. Word has length 213 [2022-07-22 18:01:04,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:01:04,234 INFO L495 AbstractCegarLoop]: Abstraction has 13211 states and 21956 transitions. [2022-07-22 18:01:04,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:04,234 INFO L276 IsEmpty]: Start isEmpty. Operand 13211 states and 21956 transitions. [2022-07-22 18:01:04,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-22 18:01:04,243 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:01:04,243 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] [2022-07-22 18:01:04,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:01:04,244 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:01:04,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:01:04,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1878058295, now seen corresponding path program 1 times [2022-07-22 18:01:04,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:01:04,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919158639] [2022-07-22 18:01:04,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:01:04,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:01:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:01:04,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:01:04,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:01:04,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919158639] [2022-07-22 18:01:04,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919158639] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:01:04,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:01:04,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:01:04,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515806794] [2022-07-22 18:01:04,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:01:04,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:01:04,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:01:04,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:01:04,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:01:04,430 INFO L87 Difference]: Start difference. First operand 13211 states and 21956 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:05,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:01:05,159 INFO L93 Difference]: Finished difference Result 38898 states and 64698 transitions. [2022-07-22 18:01:05,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:01:05,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 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 214 [2022-07-22 18:01:05,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:01:05,219 INFO L225 Difference]: With dead ends: 38898 [2022-07-22 18:01:05,220 INFO L226 Difference]: Without dead ends: 26213 [2022-07-22 18:01:05,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:01:05,241 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 819 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:01:05,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 3902 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:01:05,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26213 states. [2022-07-22 18:01:05,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26213 to 19664. [2022-07-22 18:01:05,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19664 states, 19663 states have (on average 1.6598179321568427) internal successors, (32637), 19663 states have internal predecessors, (32637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:05,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19664 states to 19664 states and 32637 transitions. [2022-07-22 18:01:05,994 INFO L78 Accepts]: Start accepts. Automaton has 19664 states and 32637 transitions. Word has length 214 [2022-07-22 18:01:05,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:01:05,995 INFO L495 AbstractCegarLoop]: Abstraction has 19664 states and 32637 transitions. [2022-07-22 18:01:05,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:05,996 INFO L276 IsEmpty]: Start isEmpty. Operand 19664 states and 32637 transitions. [2022-07-22 18:01:06,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-22 18:01:06,007 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:01:06,007 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] [2022-07-22 18:01:06,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:01:06,008 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:01:06,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:01:06,009 INFO L85 PathProgramCache]: Analyzing trace with hash 674780591, now seen corresponding path program 1 times [2022-07-22 18:01:06,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:01:06,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401800411] [2022-07-22 18:01:06,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:01:06,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:01:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:01:06,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:01:06,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:01:06,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401800411] [2022-07-22 18:01:06,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401800411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:01:06,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:01:06,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:01:06,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406495630] [2022-07-22 18:01:06,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:01:06,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:01:06,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:01:06,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:01:06,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:01:06,105 INFO L87 Difference]: Start difference. First operand 19664 states and 32637 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:06,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:01:06,862 INFO L93 Difference]: Finished difference Result 43801 states and 72881 transitions. [2022-07-22 18:01:06,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:01:06,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2022-07-22 18:01:06,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:01:06,924 INFO L225 Difference]: With dead ends: 43801 [2022-07-22 18:01:06,925 INFO L226 Difference]: Without dead ends: 30487 [2022-07-22 18:01:06,944 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 [2022-07-22 18:01:06,945 INFO L413 NwaCegarLoop]: 1456 mSDtfsCounter, 258 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:01:06,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 2650 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:01:06,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30487 states. [2022-07-22 18:01:07,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30487 to 30485. [2022-07-22 18:01:07,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30485 states, 30484 states have (on average 1.6566395486156673) internal successors, (50501), 30484 states have internal predecessors, (50501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:08,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30485 states to 30485 states and 50501 transitions. [2022-07-22 18:01:08,064 INFO L78 Accepts]: Start accepts. Automaton has 30485 states and 50501 transitions. Word has length 215 [2022-07-22 18:01:08,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:01:08,064 INFO L495 AbstractCegarLoop]: Abstraction has 30485 states and 50501 transitions. [2022-07-22 18:01:08,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:08,065 INFO L276 IsEmpty]: Start isEmpty. Operand 30485 states and 50501 transitions. [2022-07-22 18:01:08,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-22 18:01:08,071 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:01:08,071 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] [2022-07-22 18:01:08,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:01:08,072 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:01:08,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:01:08,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1778051992, now seen corresponding path program 1 times [2022-07-22 18:01:08,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:01:08,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397687000] [2022-07-22 18:01:08,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:01:08,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:01:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:01:08,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:01:08,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:01:08,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397687000] [2022-07-22 18:01:08,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397687000] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:01:08,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:01:08,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:01:08,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880534051] [2022-07-22 18:01:08,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:01:08,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:01:08,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:01:08,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:01:08,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:01:08,180 INFO L87 Difference]: Start difference. First operand 30485 states and 50501 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:09,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:01:09,059 INFO L93 Difference]: Finished difference Result 67690 states and 112150 transitions. [2022-07-22 18:01:09,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:01:09,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2022-07-22 18:01:09,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:01:09,149 INFO L225 Difference]: With dead ends: 67690 [2022-07-22 18:01:09,149 INFO L226 Difference]: Without dead ends: 47014 [2022-07-22 18:01:09,190 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 [2022-07-22 18:01:09,191 INFO L413 NwaCegarLoop]: 1440 mSDtfsCounter, 250 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:01:09,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 2635 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:01:09,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47014 states. [2022-07-22 18:01:10,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47014 to 47012. [2022-07-22 18:01:10,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47012 states, 47011 states have (on average 1.6499542660228457) internal successors, (77566), 47011 states have internal predecessors, (77566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:10,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47012 states to 47012 states and 77566 transitions. [2022-07-22 18:01:10,790 INFO L78 Accepts]: Start accepts. Automaton has 47012 states and 77566 transitions. Word has length 215 [2022-07-22 18:01:10,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:01:10,791 INFO L495 AbstractCegarLoop]: Abstraction has 47012 states and 77566 transitions. [2022-07-22 18:01:10,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:10,792 INFO L276 IsEmpty]: Start isEmpty. Operand 47012 states and 77566 transitions. [2022-07-22 18:01:10,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-22 18:01:10,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:01:10,796 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] [2022-07-22 18:01:10,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 18:01:10,796 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:01:10,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:01:10,797 INFO L85 PathProgramCache]: Analyzing trace with hash -897585958, now seen corresponding path program 1 times [2022-07-22 18:01:10,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:01:10,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038039807] [2022-07-22 18:01:10,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:01:10,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:01:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:01:10,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:01:10,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:01:10,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038039807] [2022-07-22 18:01:10,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038039807] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:01:10,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:01:10,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:01:10,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221197220] [2022-07-22 18:01:10,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:01:10,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:01:10,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:01:10,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:01:10,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:01:10,885 INFO L87 Difference]: Start difference. First operand 47012 states and 77566 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:12,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:01:12,330 INFO L93 Difference]: Finished difference Result 91429 states and 151051 transitions. [2022-07-22 18:01:12,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:01:12,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2022-07-22 18:01:12,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:01:12,514 INFO L225 Difference]: With dead ends: 91429 [2022-07-22 18:01:12,514 INFO L226 Difference]: Without dead ends: 66544 [2022-07-22 18:01:12,546 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 [2022-07-22 18:01:12,547 INFO L413 NwaCegarLoop]: 1369 mSDtfsCounter, 234 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 2566 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:01:12,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 2566 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:01:12,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66544 states. [2022-07-22 18:01:14,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66544 to 66542. [2022-07-22 18:01:14,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66542 states, 66541 states have (on average 1.6447453449752785) internal successors, (109443), 66541 states have internal predecessors, (109443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:14,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66542 states to 66542 states and 109443 transitions. [2022-07-22 18:01:14,548 INFO L78 Accepts]: Start accepts. Automaton has 66542 states and 109443 transitions. Word has length 215 [2022-07-22 18:01:14,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:01:14,549 INFO L495 AbstractCegarLoop]: Abstraction has 66542 states and 109443 transitions. [2022-07-22 18:01:14,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:14,549 INFO L276 IsEmpty]: Start isEmpty. Operand 66542 states and 109443 transitions. [2022-07-22 18:01:14,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-22 18:01:14,553 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:01:14,553 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] [2022-07-22 18:01:14,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 18:01:14,553 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:01:14,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:01:14,554 INFO L85 PathProgramCache]: Analyzing trace with hash 456861469, now seen corresponding path program 1 times [2022-07-22 18:01:14,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:01:14,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473597736] [2022-07-22 18:01:14,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:01:14,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:01:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:01:14,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:01:14,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:01:14,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473597736] [2022-07-22 18:01:14,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473597736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:01:14,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:01:14,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:01:14,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12754535] [2022-07-22 18:01:14,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:01:14,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:01:14,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:01:14,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:01:14,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:01:14,674 INFO L87 Difference]: Start difference. First operand 66542 states and 109443 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:17,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:01:17,695 INFO L93 Difference]: Finished difference Result 200933 states and 331596 transitions. [2022-07-22 18:01:17,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:01:17,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2022-07-22 18:01:17,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:01:17,990 INFO L225 Difference]: With dead ends: 200933 [2022-07-22 18:01:17,990 INFO L226 Difference]: Without dead ends: 134985 [2022-07-22 18:01:18,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:01:18,065 INFO L413 NwaCegarLoop]: 1246 mSDtfsCounter, 817 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 3922 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:01:18,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 3922 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:01:18,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134985 states. [2022-07-22 18:01:21,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134985 to 100472. [2022-07-22 18:01:21,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100472 states, 100471 states have (on average 1.643847478376845) internal successors, (165159), 100471 states have internal predecessors, (165159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:21,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100472 states to 100472 states and 165159 transitions. [2022-07-22 18:01:21,382 INFO L78 Accepts]: Start accepts. Automaton has 100472 states and 165159 transitions. Word has length 215 [2022-07-22 18:01:21,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:01:21,382 INFO L495 AbstractCegarLoop]: Abstraction has 100472 states and 165159 transitions. [2022-07-22 18:01:21,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:21,383 INFO L276 IsEmpty]: Start isEmpty. Operand 100472 states and 165159 transitions. [2022-07-22 18:01:21,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-22 18:01:21,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:01:21,386 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] [2022-07-22 18:01:21,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 18:01:21,386 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:01:21,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:01:21,387 INFO L85 PathProgramCache]: Analyzing trace with hash 434112147, now seen corresponding path program 1 times [2022-07-22 18:01:21,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:01:21,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772904716] [2022-07-22 18:01:21,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:01:21,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:01:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:01:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:01:21,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:01:21,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772904716] [2022-07-22 18:01:21,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772904716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:01:21,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:01:21,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:01:21,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767981798] [2022-07-22 18:01:21,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:01:21,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:01:21,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:01:21,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:01:21,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:01:21,476 INFO L87 Difference]: Start difference. First operand 100472 states and 165159 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:24,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:01:24,785 INFO L93 Difference]: Finished difference Result 195554 states and 322015 transitions. [2022-07-22 18:01:24,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:01:24,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2022-07-22 18:01:24,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:01:25,102 INFO L225 Difference]: With dead ends: 195554 [2022-07-22 18:01:25,102 INFO L226 Difference]: Without dead ends: 141968 [2022-07-22 18:01:25,168 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 [2022-07-22 18:01:25,169 INFO L413 NwaCegarLoop]: 1345 mSDtfsCounter, 226 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:01:25,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 2543 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:01:25,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141968 states. [2022-07-22 18:01:28,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141968 to 141966. [2022-07-22 18:01:29,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141966 states, 141965 states have (on average 1.6384672278378474) internal successors, (232605), 141965 states have internal predecessors, (232605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:29,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141966 states to 141966 states and 232605 transitions. [2022-07-22 18:01:29,415 INFO L78 Accepts]: Start accepts. Automaton has 141966 states and 232605 transitions. Word has length 215 [2022-07-22 18:01:29,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:01:29,415 INFO L495 AbstractCegarLoop]: Abstraction has 141966 states and 232605 transitions. [2022-07-22 18:01:29,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:29,415 INFO L276 IsEmpty]: Start isEmpty. Operand 141966 states and 232605 transitions. [2022-07-22 18:01:29,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-22 18:01:29,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:01:29,419 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] [2022-07-22 18:01:29,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 18:01:29,420 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:01:29,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:01:29,420 INFO L85 PathProgramCache]: Analyzing trace with hash 114596897, now seen corresponding path program 1 times [2022-07-22 18:01:29,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:01:29,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454695885] [2022-07-22 18:01:29,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:01:29,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:01:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:01:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:01:29,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:01:29,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454695885] [2022-07-22 18:01:29,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454695885] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:01:29,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:01:29,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:01:29,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362948788] [2022-07-22 18:01:29,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:01:29,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:01:29,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:01:29,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:01:29,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:01:29,519 INFO L87 Difference]: Start difference. First operand 141966 states and 232605 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:01:34,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:01:34,840 INFO L93 Difference]: Finished difference Result 314188 states and 515120 transitions. [2022-07-22 18:01:34,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:01:34,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2022-07-22 18:01:34,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:01:35,396 INFO L225 Difference]: With dead ends: 314188 [2022-07-22 18:01:35,396 INFO L226 Difference]: Without dead ends: 216200 [2022-07-22 18:01:35,499 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 [2022-07-22 18:01:35,500 INFO L413 NwaCegarLoop]: 1416 mSDtfsCounter, 242 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:01:35,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 2612 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:01:35,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216200 states.