./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label35.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label35.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 bf2e434ddb1157766f0427b524597e37ed925d60033c6d19795be6a9bcd22934 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 12:55:51,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 12:55:51,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 12:55:51,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 12:55:51,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 12:55:51,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 12:55:51,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 12:55:51,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 12:55:51,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 12:55:51,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 12:55:51,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 12:55:51,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 12:55:51,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 12:55:51,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 12:55:51,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 12:55:51,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 12:55:51,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 12:55:51,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 12:55:51,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 12:55:51,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 12:55:51,716 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 12:55:51,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 12:55:51,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 12:55:51,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 12:55:51,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 12:55:51,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 12:55:51,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 12:55:51,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 12:55:51,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 12:55:51,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 12:55:51,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 12:55:51,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 12:55:51,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 12:55:51,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 12:55:51,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 12:55:51,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 12:55:51,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 12:55:51,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 12:55:51,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 12:55:51,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 12:55:51,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 12:55:51,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 12:55:51,734 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 12:55:51,769 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 12:55:51,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 12:55:51,770 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 12:55:51,770 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 12:55:51,771 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 12:55:51,771 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 12:55:51,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 12:55:51,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 12:55:51,772 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 12:55:51,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 12:55:51,773 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 12:55:51,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 12:55:51,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 12:55:51,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 12:55:51,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 12:55:51,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 12:55:51,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 12:55:51,774 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 12:55:51,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 12:55:51,775 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 12:55:51,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 12:55:51,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 12:55:51,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 12:55:51,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 12:55:51,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 12:55:51,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 12:55:51,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 12:55:51,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 12:55:51,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 12:55:51,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 12:55:51,777 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 12:55:51,777 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 12:55:51,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 12:55:51,777 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf2e434ddb1157766f0427b524597e37ed925d60033c6d19795be6a9bcd22934 [2022-07-13 12:55:52,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 12:55:52,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 12:55:52,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 12:55:52,035 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 12:55:52,036 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 12:55:52,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label35.c [2022-07-13 12:55:52,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19f7fac89/72d0099009de4a719301d46b61286d0f/FLAGe68636f95 [2022-07-13 12:55:52,817 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 12:55:52,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label35.c [2022-07-13 12:55:52,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19f7fac89/72d0099009de4a719301d46b61286d0f/FLAGe68636f95 [2022-07-13 12:55:53,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19f7fac89/72d0099009de4a719301d46b61286d0f [2022-07-13 12:55:53,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 12:55:53,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 12:55:53,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 12:55:53,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 12:55:53,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 12:55:53,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 12:55:53" (1/1) ... [2022-07-13 12:55:53,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d8f20cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:53, skipping insertion in model container [2022-07-13 12:55:53,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 12:55:53" (1/1) ... [2022-07-13 12:55:53,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 12:55:53,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 12:55:53,407 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/eca-rers2012/Problem13_label35.c[1793,1806] [2022-07-13 12:55:54,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 12:55:54,218 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 12:55:54,240 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/eca-rers2012/Problem13_label35.c[1793,1806] [2022-07-13 12:55:54,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 12:55:54,736 INFO L208 MainTranslator]: Completed translation [2022-07-13 12:55:54,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:54 WrapperNode [2022-07-13 12:55:54,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 12:55:54,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 12:55:54,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 12:55:54,739 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 12:55:54,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:54" (1/1) ... [2022-07-13 12:55:54,822 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:54" (1/1) ... [2022-07-13 12:55:55,510 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-07-13 12:55:55,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 12:55:55,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 12:55:55,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 12:55:55,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 12:55:55,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:54" (1/1) ... [2022-07-13 12:55:55,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:54" (1/1) ... [2022-07-13 12:55:55,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:54" (1/1) ... [2022-07-13 12:55:55,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:54" (1/1) ... [2022-07-13 12:55:55,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:54" (1/1) ... [2022-07-13 12:55:55,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:54" (1/1) ... [2022-07-13 12:55:56,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:54" (1/1) ... [2022-07-13 12:55:56,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 12:55:56,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 12:55:56,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 12:55:56,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 12:55:56,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:54" (1/1) ... [2022-07-13 12:55:56,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 12:55:56,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:55:56,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 12:55:56,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 12:55:56,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 12:55:56,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 12:55:56,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 12:55:56,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 12:55:56,310 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 12:55:56,311 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 12:56:00,827 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 12:56:00,843 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 12:56:00,843 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 12:56:00,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 12:56:00 BoogieIcfgContainer [2022-07-13 12:56:00,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 12:56:00,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 12:56:00,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 12:56:00,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 12:56:00,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 12:55:53" (1/3) ... [2022-07-13 12:56:00,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e73c321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 12:56:00, skipping insertion in model container [2022-07-13 12:56:00,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:54" (2/3) ... [2022-07-13 12:56:00,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e73c321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 12:56:00, skipping insertion in model container [2022-07-13 12:56:00,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 12:56:00" (3/3) ... [2022-07-13 12:56:00,855 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label35.c [2022-07-13 12:56:00,867 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 12:56:00,868 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 12:56:00,931 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 12:56:00,937 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@2aadf79b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@28fd44d8 [2022-07-13 12:56:00,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 12:56:00,947 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:00,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-13 12:56:00,953 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:00,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:00,954 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:00,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:00,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1417350502, now seen corresponding path program 1 times [2022-07-13 12:56:00,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:00,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024659358] [2022-07-13 12:56:00,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:00,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:56:01,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:01,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024659358] [2022-07-13 12:56:01,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024659358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:01,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:56:01,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:56:01,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665597957] [2022-07-13 12:56:01,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:01,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:01,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:01,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:01,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:01,167 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:05,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:05,863 INFO L93 Difference]: Finished difference Result 3160 states and 5843 transitions. [2022-07-13 12:56:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:05,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-07-13 12:56:05,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:05,898 INFO L225 Difference]: With dead ends: 3160 [2022-07-13 12:56:05,899 INFO L226 Difference]: Without dead ends: 1983 [2022-07-13 12:56:05,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:05,910 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 1093 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:05,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 340 Invalid, 4004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [974 Valid, 3030 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-13 12:56:05,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2022-07-13 12:56:06,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1930. [2022-07-13 12:56:06,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1929 states have (on average 1.7973043027475375) internal successors, (3467), 1929 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:06,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 3467 transitions. [2022-07-13 12:56:06,056 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 3467 transitions. Word has length 10 [2022-07-13 12:56:06,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:06,056 INFO L495 AbstractCegarLoop]: Abstraction has 1930 states and 3467 transitions. [2022-07-13 12:56:06,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:06,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 3467 transitions. [2022-07-13 12:56:06,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 12:56:06,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:06,060 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:06,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 12:56:06,061 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:06,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:06,062 INFO L85 PathProgramCache]: Analyzing trace with hash -2107929182, now seen corresponding path program 1 times [2022-07-13 12:56:06,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:06,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743825203] [2022-07-13 12:56:06,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:06,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:06,229 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:56:06,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:06,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743825203] [2022-07-13 12:56:06,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743825203] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:06,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:56:06,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:56:06,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771396781] [2022-07-13 12:56:06,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:06,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:06,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:06,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:06,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:06,233 INFO L87 Difference]: Start difference. First operand 1930 states and 3467 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:09,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:09,604 INFO L93 Difference]: Finished difference Result 5456 states and 9917 transitions. [2022-07-13 12:56:09,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:09,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-07-13 12:56:09,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:09,627 INFO L225 Difference]: With dead ends: 5456 [2022-07-13 12:56:09,628 INFO L226 Difference]: Without dead ends: 3528 [2022-07-13 12:56:09,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:09,633 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:09,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1007 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-13 12:56:09,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2022-07-13 12:56:09,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3526. [2022-07-13 12:56:09,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 3525 states have (on average 1.5670921985815602) internal successors, (5524), 3525 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:09,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 5524 transitions. [2022-07-13 12:56:09,718 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 5524 transitions. Word has length 75 [2022-07-13 12:56:09,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:09,720 INFO L495 AbstractCegarLoop]: Abstraction has 3526 states and 5524 transitions. [2022-07-13 12:56:09,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:09,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 5524 transitions. [2022-07-13 12:56:09,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-13 12:56:09,725 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:09,725 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:09,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 12:56:09,728 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:09,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:09,731 INFO L85 PathProgramCache]: Analyzing trace with hash -661621005, now seen corresponding path program 1 times [2022-07-13 12:56:09,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:09,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747373698] [2022-07-13 12:56:09,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:09,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:09,898 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:56:09,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:09,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747373698] [2022-07-13 12:56:09,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747373698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:09,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:56:09,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:56:09,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343954761] [2022-07-13 12:56:09,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:09,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:09,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:09,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:09,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:09,903 INFO L87 Difference]: Start difference. First operand 3526 states and 5524 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:13,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:13,233 INFO L93 Difference]: Finished difference Result 10232 states and 16097 transitions. [2022-07-13 12:56:13,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:13,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-07-13 12:56:13,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:13,259 INFO L225 Difference]: With dead ends: 10232 [2022-07-13 12:56:13,260 INFO L226 Difference]: Without dead ends: 6708 [2022-07-13 12:56:13,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:13,266 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:13,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 850 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-13 12:56:13,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6708 states. [2022-07-13 12:56:13,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6708 to 6700. [2022-07-13 12:56:13,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6700 states, 6699 states have (on average 1.413046723391551) internal successors, (9466), 6699 states have internal predecessors, (9466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:13,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6700 states to 6700 states and 9466 transitions. [2022-07-13 12:56:13,393 INFO L78 Accepts]: Start accepts. Automaton has 6700 states and 9466 transitions. Word has length 81 [2022-07-13 12:56:13,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:13,395 INFO L495 AbstractCegarLoop]: Abstraction has 6700 states and 9466 transitions. [2022-07-13 12:56:13,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:13,395 INFO L276 IsEmpty]: Start isEmpty. Operand 6700 states and 9466 transitions. [2022-07-13 12:56:13,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-13 12:56:13,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:13,401 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:13,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 12:56:13,402 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:13,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:13,406 INFO L85 PathProgramCache]: Analyzing trace with hash -533752440, now seen corresponding path program 1 times [2022-07-13 12:56:13,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:13,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366301572] [2022-07-13 12:56:13,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:13,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:13,524 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:56:13,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:13,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366301572] [2022-07-13 12:56:13,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366301572] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:13,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:56:13,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:56:13,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626314335] [2022-07-13 12:56:13,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:13,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:13,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:13,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:13,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:13,527 INFO L87 Difference]: Start difference. First operand 6700 states and 9466 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:16,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:16,941 INFO L93 Difference]: Finished difference Result 17443 states and 24479 transitions. [2022-07-13 12:56:16,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:16,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-07-13 12:56:16,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:16,982 INFO L225 Difference]: With dead ends: 17443 [2022-07-13 12:56:16,982 INFO L226 Difference]: Without dead ends: 10745 [2022-07-13 12:56:16,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:16,995 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 3741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:16,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 965 Invalid, 3741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-13 12:56:17,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10745 states. [2022-07-13 12:56:17,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10745 to 10669. [2022-07-13 12:56:17,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 1.3562992125984252) internal successors, (14469), 10668 states have internal predecessors, (14469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 14469 transitions. [2022-07-13 12:56:17,184 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 14469 transitions. Word has length 111 [2022-07-13 12:56:17,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:17,185 INFO L495 AbstractCegarLoop]: Abstraction has 10669 states and 14469 transitions. [2022-07-13 12:56:17,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:17,185 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 14469 transitions. [2022-07-13 12:56:17,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-13 12:56:17,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:17,193 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:17,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 12:56:17,194 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:17,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:17,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1357824881, now seen corresponding path program 1 times [2022-07-13 12:56:17,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:17,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436708515] [2022-07-13 12:56:17,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:17,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:56:17,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:17,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436708515] [2022-07-13 12:56:17,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436708515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:17,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:56:17,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:56:17,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969873364] [2022-07-13 12:56:17,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:17,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:17,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:17,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:17,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:17,320 INFO L87 Difference]: Start difference. First operand 10669 states and 14469 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:20,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:20,553 INFO L93 Difference]: Finished difference Result 30031 states and 41242 transitions. [2022-07-13 12:56:20,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:20,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2022-07-13 12:56:20,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:20,602 INFO L225 Difference]: With dead ends: 30031 [2022-07-13 12:56:20,602 INFO L226 Difference]: Without dead ends: 20151 [2022-07-13 12:56:20,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:20,620 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 856 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:20,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 1160 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2484 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-13 12:56:20,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20151 states. [2022-07-13 12:56:20,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20151 to 18550. [2022-07-13 12:56:20,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18550 states, 18549 states have (on average 1.252466440239366) internal successors, (23232), 18549 states have internal predecessors, (23232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:20,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18550 states to 18550 states and 23232 transitions. [2022-07-13 12:56:20,898 INFO L78 Accepts]: Start accepts. Automaton has 18550 states and 23232 transitions. Word has length 121 [2022-07-13 12:56:20,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:20,900 INFO L495 AbstractCegarLoop]: Abstraction has 18550 states and 23232 transitions. [2022-07-13 12:56:20,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:20,904 INFO L276 IsEmpty]: Start isEmpty. Operand 18550 states and 23232 transitions. [2022-07-13 12:56:20,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-13 12:56:20,905 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:20,906 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:20,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 12:56:20,906 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:20,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:20,907 INFO L85 PathProgramCache]: Analyzing trace with hash -955704610, now seen corresponding path program 1 times [2022-07-13 12:56:20,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:20,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266605418] [2022-07-13 12:56:20,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:20,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:21,042 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:56:21,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:21,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266605418] [2022-07-13 12:56:21,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266605418] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:21,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:56:21,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:56:21,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092053060] [2022-07-13 12:56:21,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:21,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:21,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:21,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:21,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:21,045 INFO L87 Difference]: Start difference. First operand 18550 states and 23232 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:24,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:24,179 INFO L93 Difference]: Finished difference Result 44989 states and 55638 transitions. [2022-07-13 12:56:24,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:24,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-07-13 12:56:24,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:24,220 INFO L225 Difference]: With dead ends: 44989 [2022-07-13 12:56:24,221 INFO L226 Difference]: Without dead ends: 26441 [2022-07-13 12:56:24,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:24,238 INFO L413 NwaCegarLoop]: 1030 mSDtfsCounter, 730 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:24,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1214 Invalid, 2895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-13 12:56:24,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26441 states. [2022-07-13 12:56:24,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26441 to 26434. [2022-07-13 12:56:24,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26434 states, 26433 states have (on average 1.2007717625695153) internal successors, (31740), 26433 states have internal predecessors, (31740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:24,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26434 states to 26434 states and 31740 transitions. [2022-07-13 12:56:24,571 INFO L78 Accepts]: Start accepts. Automaton has 26434 states and 31740 transitions. Word has length 126 [2022-07-13 12:56:24,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:24,572 INFO L495 AbstractCegarLoop]: Abstraction has 26434 states and 31740 transitions. [2022-07-13 12:56:24,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:24,572 INFO L276 IsEmpty]: Start isEmpty. Operand 26434 states and 31740 transitions. [2022-07-13 12:56:24,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-13 12:56:24,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:24,575 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:24,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 12:56:24,575 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:24,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:24,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2104272133, now seen corresponding path program 1 times [2022-07-13 12:56:24,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:24,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691565120] [2022-07-13 12:56:24,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:24,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:24,718 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:56:24,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:24,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691565120] [2022-07-13 12:56:24,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691565120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:24,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:56:24,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:56:24,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342989528] [2022-07-13 12:56:24,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:24,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:24,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:24,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:24,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:24,721 INFO L87 Difference]: Start difference. First operand 26434 states and 31740 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:28,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:28,051 INFO L93 Difference]: Finished difference Result 72535 states and 87976 transitions. [2022-07-13 12:56:28,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:28,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 224 [2022-07-13 12:56:28,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:28,120 INFO L225 Difference]: With dead ends: 72535 [2022-07-13 12:56:28,121 INFO L226 Difference]: Without dead ends: 46103 [2022-07-13 12:56:28,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:28,146 INFO L413 NwaCegarLoop]: 1847 mSDtfsCounter, 840 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:28,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1984 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-13 12:56:28,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46103 states. [2022-07-13 12:56:28,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46103 to 42946. [2022-07-13 12:56:28,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42946 states, 42945 states have (on average 1.17205728257073) internal successors, (50334), 42945 states have internal predecessors, (50334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:28,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42946 states to 42946 states and 50334 transitions. [2022-07-13 12:56:28,735 INFO L78 Accepts]: Start accepts. Automaton has 42946 states and 50334 transitions. Word has length 224 [2022-07-13 12:56:28,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:28,736 INFO L495 AbstractCegarLoop]: Abstraction has 42946 states and 50334 transitions. [2022-07-13 12:56:28,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:28,737 INFO L276 IsEmpty]: Start isEmpty. Operand 42946 states and 50334 transitions. [2022-07-13 12:56:28,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-13 12:56:28,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:28,744 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:28,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 12:56:28,744 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:28,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:28,745 INFO L85 PathProgramCache]: Analyzing trace with hash 2051912356, now seen corresponding path program 1 times [2022-07-13 12:56:28,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:28,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526228364] [2022-07-13 12:56:28,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:28,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:28,861 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 12:56:28,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:28,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526228364] [2022-07-13 12:56:28,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526228364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:28,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:56:28,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:56:28,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522134301] [2022-07-13 12:56:28,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:28,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:28,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:28,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:28,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:28,864 INFO L87 Difference]: Start difference. First operand 42946 states and 50334 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:31,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:31,552 INFO L93 Difference]: Finished difference Result 85103 states and 99869 transitions. [2022-07-13 12:56:31,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:31,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 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 230 [2022-07-13 12:56:31,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:31,610 INFO L225 Difference]: With dead ends: 85103 [2022-07-13 12:56:31,611 INFO L226 Difference]: Without dead ends: 42946 [2022-07-13 12:56:31,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:31,641 INFO L413 NwaCegarLoop]: 1064 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2501 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 2505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:31,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1193 Invalid, 2505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2501 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 12:56:31,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42946 states. [2022-07-13 12:56:32,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42946 to 42946. [2022-07-13 12:56:32,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42946 states, 42945 states have (on average 1.1719408545814414) internal successors, (50329), 42945 states have internal predecessors, (50329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:32,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42946 states to 42946 states and 50329 transitions. [2022-07-13 12:56:32,229 INFO L78 Accepts]: Start accepts. Automaton has 42946 states and 50329 transitions. Word has length 230 [2022-07-13 12:56:32,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:32,229 INFO L495 AbstractCegarLoop]: Abstraction has 42946 states and 50329 transitions. [2022-07-13 12:56:32,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:32,230 INFO L276 IsEmpty]: Start isEmpty. Operand 42946 states and 50329 transitions. [2022-07-13 12:56:32,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-13 12:56:32,232 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:32,233 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:32,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 12:56:32,233 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:32,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:32,234 INFO L85 PathProgramCache]: Analyzing trace with hash 559254191, now seen corresponding path program 1 times [2022-07-13 12:56:32,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:32,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796644779] [2022-07-13 12:56:32,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:32,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:56:32,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:32,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796644779] [2022-07-13 12:56:32,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796644779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:32,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:56:32,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:56:32,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155459145] [2022-07-13 12:56:32,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:32,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:32,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:32,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:32,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:32,343 INFO L87 Difference]: Start difference. First operand 42946 states and 50329 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:35,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:35,827 INFO L93 Difference]: Finished difference Result 104790 states and 124853 transitions. [2022-07-13 12:56:35,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:35,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 237 [2022-07-13 12:56:35,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:35,902 INFO L225 Difference]: With dead ends: 104790 [2022-07-13 12:56:35,902 INFO L226 Difference]: Without dead ends: 62633 [2022-07-13 12:56:35,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:35,934 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 823 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:35,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 930 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-13 12:56:35,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62633 states. [2022-07-13 12:56:36,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62633 to 60261. [2022-07-13 12:56:36,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60261 states, 60260 states have (on average 1.1628609359442417) internal successors, (70074), 60260 states have internal predecessors, (70074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:36,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60261 states to 60261 states and 70074 transitions. [2022-07-13 12:56:36,508 INFO L78 Accepts]: Start accepts. Automaton has 60261 states and 70074 transitions. Word has length 237 [2022-07-13 12:56:36,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:36,508 INFO L495 AbstractCegarLoop]: Abstraction has 60261 states and 70074 transitions. [2022-07-13 12:56:36,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:36,508 INFO L276 IsEmpty]: Start isEmpty. Operand 60261 states and 70074 transitions. [2022-07-13 12:56:36,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-07-13 12:56:36,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:36,514 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:36,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 12:56:36,515 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:36,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:36,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1758434701, now seen corresponding path program 1 times [2022-07-13 12:56:36,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:36,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329244693] [2022-07-13 12:56:36,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:36,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:37,288 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 144 proven. 113 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 12:56:37,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:37,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329244693] [2022-07-13 12:56:37,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329244693] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 12:56:37,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480085438] [2022-07-13 12:56:37,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:37,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:56:37,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:56:37,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 12:56:37,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 12:56:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:37,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 12:56:37,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 12:56:37,597 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-13 12:56:37,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 12:56:37,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480085438] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:37,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 12:56:37,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-07-13 12:56:37,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901202595] [2022-07-13 12:56:37,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:37,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:37,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:37,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:37,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-13 12:56:37,600 INFO L87 Difference]: Start difference. First operand 60261 states and 70074 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) [2022-07-13 12:56:40,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:40,710 INFO L93 Difference]: Finished difference Result 119722 states and 139344 transitions. [2022-07-13 12:56:40,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:40,711 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 316 [2022-07-13 12:56:40,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:40,793 INFO L225 Difference]: With dead ends: 119722 [2022-07-13 12:56:40,793 INFO L226 Difference]: Without dead ends: 60250 [2022-07-13 12:56:40,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-13 12:56:40,825 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 1075 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:40,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 821 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 12:56:40,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60250 states. [2022-07-13 12:56:41,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60250 to 60247. [2022-07-13 12:56:41,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60247 states, 60246 states have (on average 1.1198917770474388) internal successors, (67469), 60246 states have internal predecessors, (67469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:41,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60247 states to 60247 states and 67469 transitions. [2022-07-13 12:56:41,622 INFO L78 Accepts]: Start accepts. Automaton has 60247 states and 67469 transitions. Word has length 316 [2022-07-13 12:56:41,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:41,623 INFO L495 AbstractCegarLoop]: Abstraction has 60247 states and 67469 transitions. [2022-07-13 12:56:41,623 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) [2022-07-13 12:56:41,623 INFO L276 IsEmpty]: Start isEmpty. Operand 60247 states and 67469 transitions. [2022-07-13 12:56:41,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-07-13 12:56:41,628 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:41,628 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:41,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 12:56:41,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 12:56:41,852 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:41,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:41,852 INFO L85 PathProgramCache]: Analyzing trace with hash -949171357, now seen corresponding path program 1 times [2022-07-13 12:56:41,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:41,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906969272] [2022-07-13 12:56:41,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:41,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:42,114 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-13 12:56:42,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:42,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906969272] [2022-07-13 12:56:42,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906969272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:42,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:56:42,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:56:42,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431314491] [2022-07-13 12:56:42,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:42,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:42,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:42,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:42,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:42,118 INFO L87 Difference]: Start difference. First operand 60247 states and 67469 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:45,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:45,471 INFO L93 Difference]: Finished difference Result 131500 states and 148742 transitions. [2022-07-13 12:56:45,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:45,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 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 325 [2022-07-13 12:56:45,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:45,561 INFO L225 Difference]: With dead ends: 131500 [2022-07-13 12:56:45,561 INFO L226 Difference]: Without dead ends: 72042 [2022-07-13 12:56:45,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:45,707 INFO L413 NwaCegarLoop]: 1438 mSDtfsCounter, 1145 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 767 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 3159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 767 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:45,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 1522 Invalid, 3159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [767 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-13 12:56:45,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72042 states. [2022-07-13 12:56:46,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72042 to 72041. [2022-07-13 12:56:46,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72041 states, 72040 states have (on average 1.1067323709050527) internal successors, (79729), 72040 states have internal predecessors, (79729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:46,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72041 states to 72041 states and 79729 transitions. [2022-07-13 12:56:46,369 INFO L78 Accepts]: Start accepts. Automaton has 72041 states and 79729 transitions. Word has length 325 [2022-07-13 12:56:46,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:46,369 INFO L495 AbstractCegarLoop]: Abstraction has 72041 states and 79729 transitions. [2022-07-13 12:56:46,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:46,369 INFO L276 IsEmpty]: Start isEmpty. Operand 72041 states and 79729 transitions. [2022-07-13 12:56:46,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-07-13 12:56:46,374 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:46,374 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:46,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 12:56:46,374 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:46,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:46,375 INFO L85 PathProgramCache]: Analyzing trace with hash 240805553, now seen corresponding path program 1 times [2022-07-13 12:56:46,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:46,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484321585] [2022-07-13 12:56:46,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:46,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:46,489 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 406 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-13 12:56:46,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:46,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484321585] [2022-07-13 12:56:46,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484321585] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:46,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:56:46,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:56:46,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394062303] [2022-07-13 12:56:46,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:46,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 12:56:46,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:46,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 12:56:46,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 12:56:46,492 INFO L87 Difference]: Start difference. First operand 72041 states and 79729 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:53,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:53,202 INFO L93 Difference]: Finished difference Result 181243 states and 200566 transitions. [2022-07-13 12:56:53,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 12:56:53,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 358 [2022-07-13 12:56:53,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:53,413 INFO L225 Difference]: With dead ends: 181243 [2022-07-13 12:56:53,414 INFO L226 Difference]: Without dead ends: 109991 [2022-07-13 12:56:53,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 12:56:53,484 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 1678 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 6581 mSolverCounterSat, 940 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1678 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 7521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 940 IncrementalHoareTripleChecker+Valid, 6581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:53,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1678 Valid, 892 Invalid, 7521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [940 Valid, 6581 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-07-13 12:56:53,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109991 states. [2022-07-13 12:56:54,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109991 to 87793. [2022-07-13 12:56:54,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87793 states, 87792 states have (on average 1.0966375068343357) internal successors, (96276), 87792 states have internal predecessors, (96276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:54,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87793 states to 87793 states and 96276 transitions. [2022-07-13 12:56:54,634 INFO L78 Accepts]: Start accepts. Automaton has 87793 states and 96276 transitions. Word has length 358 [2022-07-13 12:56:54,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:54,634 INFO L495 AbstractCegarLoop]: Abstraction has 87793 states and 96276 transitions. [2022-07-13 12:56:54,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:54,635 INFO L276 IsEmpty]: Start isEmpty. Operand 87793 states and 96276 transitions. [2022-07-13 12:56:54,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-07-13 12:56:54,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:54,640 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:54,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 12:56:54,640 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:54,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:54,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1615939699, now seen corresponding path program 1 times [2022-07-13 12:56:54,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:54,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515773386] [2022-07-13 12:56:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:54,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-13 12:56:54,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:54,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515773386] [2022-07-13 12:56:54,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515773386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:54,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:56:54,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:56:54,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602916484] [2022-07-13 12:56:54,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:54,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:54,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:54,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:54,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:54,789 INFO L87 Difference]: Start difference. First operand 87793 states and 96276 transitions. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:58,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:58,649 INFO L93 Difference]: Finished difference Result 199191 states and 219080 transitions. [2022-07-13 12:56:58,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:58,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 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 371 [2022-07-13 12:56:58,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:58,937 INFO L225 Difference]: With dead ends: 199191 [2022-07-13 12:56:58,937 INFO L226 Difference]: Without dead ends: 112187 [2022-07-13 12:56:58,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:58,955 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 815 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2404 mSolverCounterSat, 908 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 3312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 908 IncrementalHoareTripleChecker+Valid, 2404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:58,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 835 Invalid, 3312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [908 Valid, 2404 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-13 12:56:59,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112187 states. [2022-07-13 12:57:00,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112187 to 110599. [2022-07-13 12:57:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110599 states, 110598 states have (on average 1.0884554874410026) internal successors, (120381), 110598 states have internal predecessors, (120381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:00,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110599 states to 110599 states and 120381 transitions. [2022-07-13 12:57:00,256 INFO L78 Accepts]: Start accepts. Automaton has 110599 states and 120381 transitions. Word has length 371 [2022-07-13 12:57:00,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:57:00,257 INFO L495 AbstractCegarLoop]: Abstraction has 110599 states and 120381 transitions. [2022-07-13 12:57:00,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:00,257 INFO L276 IsEmpty]: Start isEmpty. Operand 110599 states and 120381 transitions. [2022-07-13 12:57:00,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-07-13 12:57:00,272 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:57:00,273 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:57:00,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 12:57:00,273 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:57:00,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:57:00,274 INFO L85 PathProgramCache]: Analyzing trace with hash -459150642, now seen corresponding path program 1 times [2022-07-13 12:57:00,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:57:00,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274647027] [2022-07-13 12:57:00,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:57:00,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:57:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:57:00,770 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2022-07-13 12:57:00,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:57:00,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274647027] [2022-07-13 12:57:00,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274647027] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:57:00,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:57:00,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:57:00,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181232433] [2022-07-13 12:57:00,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:57:00,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:57:00,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:57:00,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:57:00,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:57:00,774 INFO L87 Difference]: Start difference. First operand 110599 states and 120381 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:04,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:57:04,452 INFO L93 Difference]: Finished difference Result 244017 states and 266527 transitions. [2022-07-13 12:57:04,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:57:04,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 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 477 [2022-07-13 12:57:04,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:57:04,618 INFO L225 Difference]: With dead ends: 244017 [2022-07-13 12:57:04,618 INFO L226 Difference]: Without dead ends: 132633 [2022-07-13 12:57:04,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:57:04,654 INFO L413 NwaCegarLoop]: 1707 mSDtfsCounter, 849 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2490 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 3162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 2490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-13 12:57:04,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 1842 Invalid, 3162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 2490 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-13 12:57:04,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132633 states. [2022-07-13 12:57:06,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132633 to 132620. [2022-07-13 12:57:06,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132620 states, 132619 states have (on average 1.0746650178330406) internal successors, (142521), 132619 states have internal predecessors, (142521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:06,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132620 states to 132620 states and 142521 transitions. [2022-07-13 12:57:06,247 INFO L78 Accepts]: Start accepts. Automaton has 132620 states and 142521 transitions. Word has length 477 [2022-07-13 12:57:06,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:57:06,248 INFO L495 AbstractCegarLoop]: Abstraction has 132620 states and 142521 transitions. [2022-07-13 12:57:06,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:06,248 INFO L276 IsEmpty]: Start isEmpty. Operand 132620 states and 142521 transitions. [2022-07-13 12:57:06,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2022-07-13 12:57:06,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:57:06,269 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:57:06,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 12:57:06,270 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:57:06,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:57:06,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1561614142, now seen corresponding path program 1 times [2022-07-13 12:57:06,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:57:06,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277563220] [2022-07-13 12:57:06,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:57:06,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:57:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:57:06,938 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 253 proven. 113 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 12:57:06,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:57:06,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277563220] [2022-07-13 12:57:06,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277563220] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 12:57:06,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425641898] [2022-07-13 12:57:06,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:57:06,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:57:06,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:57:06,940 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 12:57:06,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 12:57:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:57:07,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 12:57:07,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 12:57:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-13 12:57:07,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 12:57:07,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425641898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:57:07,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 12:57:07,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 12:57:07,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786565521] [2022-07-13 12:57:07,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:57:07,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:57:07,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:57:07,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:57:07,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-13 12:57:07,739 INFO L87 Difference]: Start difference. First operand 132620 states and 142521 transitions. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 2 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:11,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:57:11,086 INFO L93 Difference]: Finished difference Result 251079 states and 270447 transitions. [2022-07-13 12:57:11,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:57:11,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 2 states have internal predecessors, (474), 0 states have call successors, (0), 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 593 [2022-07-13 12:57:11,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:57:11,292 INFO L225 Difference]: With dead ends: 251079 [2022-07-13 12:57:11,293 INFO L226 Difference]: Without dead ends: 135779 [2022-07-13 12:57:11,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 592 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-13 12:57:11,364 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 680 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2425 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 2532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 12:57:11,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1115 Invalid, 2532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2425 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 12:57:11,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135779 states. [2022-07-13 12:57:12,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135779 to 135769. [2022-07-13 12:57:13,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135769 states, 135768 states have (on average 1.0669450827882858) internal successors, (144857), 135768 states have internal predecessors, (144857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:13,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135769 states to 135769 states and 144857 transitions. [2022-07-13 12:57:13,208 INFO L78 Accepts]: Start accepts. Automaton has 135769 states and 144857 transitions. Word has length 593 [2022-07-13 12:57:13,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:57:13,209 INFO L495 AbstractCegarLoop]: Abstraction has 135769 states and 144857 transitions. [2022-07-13 12:57:13,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 2 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:13,209 INFO L276 IsEmpty]: Start isEmpty. Operand 135769 states and 144857 transitions. [2022-07-13 12:57:13,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2022-07-13 12:57:13,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:57:13,238 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:57:13,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 12:57:13,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-13 12:57:13,464 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:57:13,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:57:13,465 INFO L85 PathProgramCache]: Analyzing trace with hash -698546600, now seen corresponding path program 1 times [2022-07-13 12:57:13,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:57:13,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469924096] [2022-07-13 12:57:13,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:57:13,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:57:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:57:13,665 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 743 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-07-13 12:57:13,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:57:13,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469924096] [2022-07-13 12:57:13,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469924096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:57:13,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:57:13,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:57:13,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298694059] [2022-07-13 12:57:13,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:57:13,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:57:13,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:57:13,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:57:13,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:57:13,668 INFO L87 Difference]: Start difference. First operand 135769 states and 144857 transitions. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:17,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:57:17,266 INFO L93 Difference]: Finished difference Result 272326 states and 290511 transitions. [2022-07-13 12:57:17,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:57:17,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 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 635 [2022-07-13 12:57:17,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:57:17,447 INFO L225 Difference]: With dead ends: 272326 [2022-07-13 12:57:17,447 INFO L226 Difference]: Without dead ends: 137346 [2022-07-13 12:57:17,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:57:17,833 INFO L413 NwaCegarLoop]: 1328 mSDtfsCounter, 919 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 12:57:17,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 1405 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [557 Valid, 2365 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 12:57:17,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137346 states. [2022-07-13 12:57:19,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137346 to 135759. [2022-07-13 12:57:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135759 states, 135758 states have (on average 1.0514371160447267) internal successors, (142741), 135758 states have internal predecessors, (142741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:19,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135759 states to 135759 states and 142741 transitions. [2022-07-13 12:57:19,376 INFO L78 Accepts]: Start accepts. Automaton has 135759 states and 142741 transitions. Word has length 635 [2022-07-13 12:57:19,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:57:19,376 INFO L495 AbstractCegarLoop]: Abstraction has 135759 states and 142741 transitions. [2022-07-13 12:57:19,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:19,377 INFO L276 IsEmpty]: Start isEmpty. Operand 135759 states and 142741 transitions. [2022-07-13 12:57:19,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2022-07-13 12:57:19,405 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:57:19,405 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:57:19,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 12:57:19,406 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:57:19,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:57:19,406 INFO L85 PathProgramCache]: Analyzing trace with hash 521450405, now seen corresponding path program 1 times [2022-07-13 12:57:19,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:57:19,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607885376] [2022-07-13 12:57:19,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:57:19,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:57:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:57:19,624 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 441 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2022-07-13 12:57:19,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:57:19,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607885376] [2022-07-13 12:57:19,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607885376] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:57:19,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:57:19,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:57:19,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077317947] [2022-07-13 12:57:19,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:57:19,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:57:19,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:57:19,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:57:19,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:57:19,627 INFO L87 Difference]: Start difference. First operand 135759 states and 142741 transitions. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 2 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:22,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:57:22,104 INFO L93 Difference]: Finished difference Result 251818 states and 265273 transitions. [2022-07-13 12:57:22,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:57:22,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 2 states have internal predecessors, (404), 0 states have call successors, (0), 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 676 [2022-07-13 12:57:22,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:57:22,270 INFO L225 Difference]: With dead ends: 251818 [2022-07-13 12:57:22,270 INFO L226 Difference]: Without dead ends: 134956 [2022-07-13 12:57:22,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:57:22,682 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 1564 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 12:57:22,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1564 Valid, 270 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 12:57:22,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134956 states. [2022-07-13 12:57:23,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134956 to 134955. [2022-07-13 12:57:23,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134955 states, 134954 states have (on average 1.0507358062747307) internal successors, (141801), 134954 states have internal predecessors, (141801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:24,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134955 states to 134955 states and 141801 transitions. [2022-07-13 12:57:24,162 INFO L78 Accepts]: Start accepts. Automaton has 134955 states and 141801 transitions. Word has length 676 [2022-07-13 12:57:24,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:57:24,163 INFO L495 AbstractCegarLoop]: Abstraction has 134955 states and 141801 transitions. [2022-07-13 12:57:24,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 2 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:24,164 INFO L276 IsEmpty]: Start isEmpty. Operand 134955 states and 141801 transitions. [2022-07-13 12:57:24,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2022-07-13 12:57:24,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:57:24,183 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:57:24,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 12:57:24,183 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:57:24,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:57:24,184 INFO L85 PathProgramCache]: Analyzing trace with hash -464308242, now seen corresponding path program 1 times [2022-07-13 12:57:24,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:57:24,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249680148] [2022-07-13 12:57:24,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:57:24,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:57:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:57:24,465 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 456 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2022-07-13 12:57:24,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:57:24,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249680148] [2022-07-13 12:57:24,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249680148] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:57:24,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:57:24,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:57:24,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675657868] [2022-07-13 12:57:24,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:57:24,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:57:24,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:57:24,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:57:24,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:57:24,468 INFO L87 Difference]: Start difference. First operand 134955 states and 141801 transitions. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:28,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:57:28,012 INFO L93 Difference]: Finished difference Result 269126 states and 282809 transitions. [2022-07-13 12:57:28,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:57:28,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 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 681 [2022-07-13 12:57:28,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:57:28,548 INFO L225 Difference]: With dead ends: 269126 [2022-07-13 12:57:28,548 INFO L226 Difference]: Without dead ends: 134960 [2022-07-13 12:57:28,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:57:28,613 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 616 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 2737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 12:57:28,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 1731 Invalid, 2737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 12:57:28,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134960 states. [2022-07-13 12:57:29,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134960 to 132592. [2022-07-13 12:57:29,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132592 states, 132591 states have (on average 1.042951633217941) internal successors, (138286), 132591 states have internal predecessors, (138286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:30,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132592 states to 132592 states and 138286 transitions. [2022-07-13 12:57:30,023 INFO L78 Accepts]: Start accepts. Automaton has 132592 states and 138286 transitions. Word has length 681 [2022-07-13 12:57:30,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:57:30,023 INFO L495 AbstractCegarLoop]: Abstraction has 132592 states and 138286 transitions. [2022-07-13 12:57:30,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:30,024 INFO L276 IsEmpty]: Start isEmpty. Operand 132592 states and 138286 transitions. [2022-07-13 12:57:30,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2022-07-13 12:57:30,042 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:57:30,043 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:57:30,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 12:57:30,043 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:57:30,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:57:30,044 INFO L85 PathProgramCache]: Analyzing trace with hash 2070978386, now seen corresponding path program 1 times [2022-07-13 12:57:30,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:57:30,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021856615] [2022-07-13 12:57:30,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:57:30,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:57:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:57:30,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 465 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-07-13 12:57:30,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:57:30,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021856615] [2022-07-13 12:57:30,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021856615] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:57:30,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:57:30,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:57:30,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846922128] [2022-07-13 12:57:30,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:57:30,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:57:30,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:57:30,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:57:30,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:57:30,351 INFO L87 Difference]: Start difference. First operand 132592 states and 138286 transitions. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:34,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:57:34,359 INFO L93 Difference]: Finished difference Result 270743 states and 282694 transitions. [2022-07-13 12:57:34,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:57:34,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 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 690 [2022-07-13 12:57:34,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:57:34,563 INFO L225 Difference]: With dead ends: 270743 [2022-07-13 12:57:34,563 INFO L226 Difference]: Without dead ends: 154687 [2022-07-13 12:57:34,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:57:34,999 INFO L413 NwaCegarLoop]: 1467 mSDtfsCounter, 647 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 2995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 12:57:35,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 1568 Invalid, 2995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-13 12:57:35,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154687 states. [2022-07-13 12:57:36,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154687 to 142048. [2022-07-13 12:57:36,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142048 states, 142047 states have (on average 1.0425211373700254) internal successors, (148087), 142047 states have internal predecessors, (148087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:36,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142048 states to 142048 states and 148087 transitions. [2022-07-13 12:57:36,623 INFO L78 Accepts]: Start accepts. Automaton has 142048 states and 148087 transitions. Word has length 690 [2022-07-13 12:57:36,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:57:36,624 INFO L495 AbstractCegarLoop]: Abstraction has 142048 states and 148087 transitions. [2022-07-13 12:57:36,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:36,624 INFO L276 IsEmpty]: Start isEmpty. Operand 142048 states and 148087 transitions. [2022-07-13 12:57:36,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2022-07-13 12:57:36,651 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:57:36,652 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:57:36,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 12:57:36,652 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:57:36,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:57:36,653 INFO L85 PathProgramCache]: Analyzing trace with hash 2125374140, now seen corresponding path program 1 times [2022-07-13 12:57:36,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:57:36,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395652527] [2022-07-13 12:57:36,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:57:36,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:57:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:57:36,875 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 731 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-07-13 12:57:36,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:57:36,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395652527] [2022-07-13 12:57:36,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395652527] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:57:36,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:57:36,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:57:36,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561113513] [2022-07-13 12:57:36,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:57:36,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:57:36,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:57:36,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:57:36,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:57:36,878 INFO L87 Difference]: Start difference. First operand 142048 states and 148087 transitions. Second operand has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:57:40,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:57:40,290 INFO L93 Difference]: Finished difference Result 269151 states and 280995 transitions. [2022-07-13 12:57:40,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:57:40,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 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 726 [2022-07-13 12:57:40,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:57:40,473 INFO L225 Difference]: With dead ends: 269151 [2022-07-13 12:57:40,473 INFO L226 Difference]: Without dead ends: 142060 [2022-07-13 12:57:40,546 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 [2022-07-13 12:57:40,547 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 770 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 2401 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 2530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 12:57:40,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 1695 Invalid, 2530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2401 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 12:57:40,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142060 states.