./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label54.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label54.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 49ff6ba228d081d26cec6b087caf15954318cb178107abc089cabcbe5599946d --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-20 23:57:24,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 23:57:24,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 23:57:25,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 23:57:25,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 23:57:25,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 23:57:25,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 23:57:25,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 23:57:25,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 23:57:25,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 23:57:25,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 23:57:25,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 23:57:25,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 23:57:25,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 23:57:25,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 23:57:25,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 23:57:25,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 23:57:25,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 23:57:25,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 23:57:25,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 23:57:25,057 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 23:57:25,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 23:57:25,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 23:57:25,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 23:57:25,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 23:57:25,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 23:57:25,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 23:57:25,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 23:57:25,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 23:57:25,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 23:57:25,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 23:57:25,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 23:57:25,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 23:57:25,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 23:57:25,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 23:57:25,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 23:57:25,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 23:57:25,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 23:57:25,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 23:57:25,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 23:57:25,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 23:57:25,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 23:57:25,087 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-20 23:57:25,126 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 23:57:25,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 23:57:25,127 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 23:57:25,127 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 23:57:25,128 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 23:57:25,128 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 23:57:25,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 23:57:25,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 23:57:25,129 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 23:57:25,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 23:57:25,130 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 23:57:25,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 23:57:25,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 23:57:25,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 23:57:25,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 23:57:25,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 23:57:25,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 23:57:25,132 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 23:57:25,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 23:57:25,133 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 23:57:25,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 23:57:25,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 23:57:25,133 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 23:57:25,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 23:57:25,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 23:57:25,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 23:57:25,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 23:57:25,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 23:57:25,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 23:57:25,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 23:57:25,135 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 23:57:25,136 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 23:57:25,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 23:57:25,136 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 49ff6ba228d081d26cec6b087caf15954318cb178107abc089cabcbe5599946d [2022-07-20 23:57:25,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 23:57:25,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 23:57:25,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 23:57:25,490 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 23:57:25,490 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 23:57:25,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label54.c [2022-07-20 23:57:25,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5662f1c5/cc588b9559fb403ca5423903eb81b450/FLAG280e1476e [2022-07-20 23:57:26,265 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 23:57:26,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label54.c [2022-07-20 23:57:26,302 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5662f1c5/cc588b9559fb403ca5423903eb81b450/FLAG280e1476e [2022-07-20 23:57:26,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5662f1c5/cc588b9559fb403ca5423903eb81b450 [2022-07-20 23:57:26,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 23:57:26,382 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 23:57:26,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 23:57:26,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 23:57:26,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 23:57:26,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:57:26" (1/1) ... [2022-07-20 23:57:26,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d576e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:26, skipping insertion in model container [2022-07-20 23:57:26,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:57:26" (1/1) ... [2022-07-20 23:57:26,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 23:57:26,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 23:57:26,798 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_label54.c[4044,4057] [2022-07-20 23:57:27,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 23:57:27,657 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 23:57:27,686 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_label54.c[4044,4057] [2022-07-20 23:57:28,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 23:57:28,241 INFO L208 MainTranslator]: Completed translation [2022-07-20 23:57:28,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:28 WrapperNode [2022-07-20 23:57:28,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 23:57:28,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 23:57:28,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 23:57:28,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 23:57:28,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:28" (1/1) ... [2022-07-20 23:57:28,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:28" (1/1) ... [2022-07-20 23:57:29,009 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-07-20 23:57:29,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 23:57:29,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 23:57:29,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 23:57:29,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 23:57:29,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:28" (1/1) ... [2022-07-20 23:57:29,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:28" (1/1) ... [2022-07-20 23:57:29,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:28" (1/1) ... [2022-07-20 23:57:29,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:28" (1/1) ... [2022-07-20 23:57:29,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:28" (1/1) ... [2022-07-20 23:57:29,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:28" (1/1) ... [2022-07-20 23:57:29,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:28" (1/1) ... [2022-07-20 23:57:29,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 23:57:29,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 23:57:29,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 23:57:29,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 23:57:29,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:28" (1/1) ... [2022-07-20 23:57:29,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 23:57:29,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:57:29,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-20 23:57:29,847 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 [2022-07-20 23:57:29,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 23:57:29,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 23:57:29,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 23:57:29,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 23:57:29,975 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 23:57:29,976 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 23:57:34,477 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 23:57:34,496 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 23:57:34,499 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-20 23:57:34,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:57:34 BoogieIcfgContainer [2022-07-20 23:57:34,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 23:57:34,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 23:57:34,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 23:57:34,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 23:57:34,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:57:26" (1/3) ... [2022-07-20 23:57:34,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8520ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:57:34, skipping insertion in model container [2022-07-20 23:57:34,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:57:28" (2/3) ... [2022-07-20 23:57:34,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8520ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:57:34, skipping insertion in model container [2022-07-20 23:57:34,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:57:34" (3/3) ... [2022-07-20 23:57:34,510 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label54.c [2022-07-20 23:57:34,523 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 23:57:34,523 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 23:57:34,595 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 23:57:34,601 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@4b120c4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4a486eb2 [2022-07-20 23:57:34,602 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 23:57:34,610 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) [2022-07-20 23:57:34,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-20 23:57:34,620 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:57:34,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:57:34,621 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:57:34,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:57:34,627 INFO L85 PathProgramCache]: Analyzing trace with hash -438767135, now seen corresponding path program 1 times [2022-07-20 23:57:34,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:57:34,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528791908] [2022-07-20 23:57:34,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:57:34,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:57:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:57:34,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:57:34,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:57:34,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528791908] [2022-07-20 23:57:34,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528791908] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:57:34,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:57:34,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 23:57:34,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7636077] [2022-07-20 23:57:34,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:57:34,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:57:34,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:57:34,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:57:34,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:57:34,915 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 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:38,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:57:38,858 INFO L93 Difference]: Finished difference Result 3147 states and 5806 transitions. [2022-07-20 23:57:38,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:57:38,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2022-07-20 23:57:38,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:57:38,883 INFO L225 Difference]: With dead ends: 3147 [2022-07-20 23:57:38,883 INFO L226 Difference]: Without dead ends: 1964 [2022-07-20 23:57:38,890 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 [2022-07-20 23:57:38,894 INFO L413 NwaCegarLoop]: 764 mSDtfsCounter, 1152 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-20 23:57:38,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 992 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-20 23:57:38,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2022-07-20 23:57:39,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1951. [2022-07-20 23:57:39,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1950 states have (on average 1.6538461538461537) internal successors, (3225), 1950 states have internal predecessors, (3225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:39,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 3225 transitions. [2022-07-20 23:57:39,077 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 3225 transitions. Word has length 27 [2022-07-20 23:57:39,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:57:39,077 INFO L495 AbstractCegarLoop]: Abstraction has 1951 states and 3225 transitions. [2022-07-20 23:57:39,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:39,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 3225 transitions. [2022-07-20 23:57:39,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-20 23:57:39,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:57:39,081 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-20 23:57:39,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 23:57:39,081 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:57:39,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:57:39,082 INFO L85 PathProgramCache]: Analyzing trace with hash 575451273, now seen corresponding path program 1 times [2022-07-20 23:57:39,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:57:39,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097000935] [2022-07-20 23:57:39,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:57:39,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:57:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:57:39,242 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:57:39,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:57:39,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097000935] [2022-07-20 23:57:39,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097000935] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:57:39,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:57:39,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 23:57:39,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744611445] [2022-07-20 23:57:39,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:57:39,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:57:39,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:57:39,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:57:39,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:57:39,248 INFO L87 Difference]: Start difference. First operand 1951 states and 3225 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:42,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:57:42,970 INFO L93 Difference]: Finished difference Result 5542 states and 9222 transitions. [2022-07-20 23:57:42,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:57:42,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-07-20 23:57:42,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:57:42,990 INFO L225 Difference]: With dead ends: 5542 [2022-07-20 23:57:42,990 INFO L226 Difference]: Without dead ends: 3593 [2022-07-20 23:57:42,995 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 [2022-07-20 23:57:42,997 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 924 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 749 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-20 23:57:42,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 1009 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [749 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-20 23:57:43,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3593 states. [2022-07-20 23:57:43,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3593 to 3581. [2022-07-20 23:57:43,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3581 states, 3580 states have (on average 1.5050279329608938) internal successors, (5388), 3580 states have internal predecessors, (5388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:43,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 5388 transitions. [2022-07-20 23:57:43,069 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 5388 transitions. Word has length 98 [2022-07-20 23:57:43,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:57:43,070 INFO L495 AbstractCegarLoop]: Abstraction has 3581 states and 5388 transitions. [2022-07-20 23:57:43,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:43,071 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 5388 transitions. [2022-07-20 23:57:43,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-20 23:57:43,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:57:43,078 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-20 23:57:43,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 23:57:43,081 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:57:43,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:57:43,081 INFO L85 PathProgramCache]: Analyzing trace with hash 228222636, now seen corresponding path program 1 times [2022-07-20 23:57:43,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:57:43,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443066285] [2022-07-20 23:57:43,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:57:43,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:57:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:57:43,186 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:57:43,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:57:43,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443066285] [2022-07-20 23:57:43,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443066285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:57:43,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:57:43,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 23:57:43,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178096685] [2022-07-20 23:57:43,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:57:43,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:57:43,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:57:43,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:57:43,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:57:43,189 INFO L87 Difference]: Start difference. First operand 3581 states and 5388 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:46,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:57:46,462 INFO L93 Difference]: Finished difference Result 10352 states and 15625 transitions. [2022-07-20 23:57:46,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:57:46,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2022-07-20 23:57:46,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:57:46,487 INFO L225 Difference]: With dead ends: 10352 [2022-07-20 23:57:46,488 INFO L226 Difference]: Without dead ends: 6773 [2022-07-20 23:57:46,495 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 [2022-07-20 23:57:46,496 INFO L413 NwaCegarLoop]: 1021 mSDtfsCounter, 785 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2491 mSolverCounterSat, 786 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 786 IncrementalHoareTripleChecker+Valid, 2491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-20 23:57:46,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 1172 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [786 Valid, 2491 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-20 23:57:46,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6773 states. [2022-07-20 23:57:46,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6773 to 6749. [2022-07-20 23:57:46,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6749 states, 6748 states have (on average 1.3252815649081209) internal successors, (8943), 6748 states have internal predecessors, (8943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:46,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6749 states to 6749 states and 8943 transitions. [2022-07-20 23:57:46,625 INFO L78 Accepts]: Start accepts. Automaton has 6749 states and 8943 transitions. Word has length 112 [2022-07-20 23:57:46,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:57:46,626 INFO L495 AbstractCegarLoop]: Abstraction has 6749 states and 8943 transitions. [2022-07-20 23:57:46,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:46,626 INFO L276 IsEmpty]: Start isEmpty. Operand 6749 states and 8943 transitions. [2022-07-20 23:57:46,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-20 23:57:46,634 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:57:46,634 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-20 23:57:46,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-20 23:57:46,635 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:57:46,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:57:46,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1558843312, now seen corresponding path program 1 times [2022-07-20 23:57:46,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:57:46,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422921045] [2022-07-20 23:57:46,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:57:46,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:57:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:57:46,797 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:57:46,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:57:46,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422921045] [2022-07-20 23:57:46,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422921045] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:57:46,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:57:46,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 23:57:46,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927295464] [2022-07-20 23:57:46,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:57:46,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:57:46,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:57:46,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:57:46,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:57:46,802 INFO L87 Difference]: Start difference. First operand 6749 states and 8943 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:49,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:57:49,781 INFO L93 Difference]: Finished difference Result 19804 states and 26220 transitions. [2022-07-20 23:57:49,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:57:49,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2022-07-20 23:57:49,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:57:49,823 INFO L225 Difference]: With dead ends: 19804 [2022-07-20 23:57:49,823 INFO L226 Difference]: Without dead ends: 13057 [2022-07-20 23:57:49,836 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 [2022-07-20 23:57:49,837 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 865 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 875 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 3205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 875 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-20 23:57:49,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1035 Invalid, 3205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [875 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-20 23:57:49,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13057 states. [2022-07-20 23:57:50,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13057 to 13052. [2022-07-20 23:57:50,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13052 states, 13051 states have (on average 1.217914336066202) internal successors, (15895), 13051 states have internal predecessors, (15895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:50,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13052 states to 13052 states and 15895 transitions. [2022-07-20 23:57:50,182 INFO L78 Accepts]: Start accepts. Automaton has 13052 states and 15895 transitions. Word has length 141 [2022-07-20 23:57:50,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:57:50,182 INFO L495 AbstractCegarLoop]: Abstraction has 13052 states and 15895 transitions. [2022-07-20 23:57:50,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:50,183 INFO L276 IsEmpty]: Start isEmpty. Operand 13052 states and 15895 transitions. [2022-07-20 23:57:50,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-07-20 23:57:50,185 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:57:50,186 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-20 23:57:50,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-20 23:57:50,186 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:57:50,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:57:50,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1789674140, now seen corresponding path program 1 times [2022-07-20 23:57:50,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:57:50,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143920266] [2022-07-20 23:57:50,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:57:50,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:57:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:57:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-20 23:57:50,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:57:50,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143920266] [2022-07-20 23:57:50,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143920266] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:57:50,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:57:50,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 23:57:50,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815150273] [2022-07-20 23:57:50,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:57:50,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:57:50,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:57:50,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:57:50,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:57:50,372 INFO L87 Difference]: Start difference. First operand 13052 states and 15895 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:53,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:57:53,336 INFO L93 Difference]: Finished difference Result 26889 states and 32590 transitions. [2022-07-20 23:57:53,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:57:53,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2022-07-20 23:57:53,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:57:53,367 INFO L225 Difference]: With dead ends: 26889 [2022-07-20 23:57:53,367 INFO L226 Difference]: Without dead ends: 13839 [2022-07-20 23:57:53,382 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 [2022-07-20 23:57:53,383 INFO L413 NwaCegarLoop]: 1084 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-20 23:57:53,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1213 Invalid, 2530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-20 23:57:53,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13839 states. [2022-07-20 23:57:53,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13839 to 13839. [2022-07-20 23:57:53,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13839 states, 13838 states have (on average 1.2058823529411764) internal successors, (16687), 13838 states have internal predecessors, (16687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:53,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13839 states to 13839 states and 16687 transitions. [2022-07-20 23:57:53,592 INFO L78 Accepts]: Start accepts. Automaton has 13839 states and 16687 transitions. Word has length 219 [2022-07-20 23:57:53,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:57:53,593 INFO L495 AbstractCegarLoop]: Abstraction has 13839 states and 16687 transitions. [2022-07-20 23:57:53,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:53,594 INFO L276 IsEmpty]: Start isEmpty. Operand 13839 states and 16687 transitions. [2022-07-20 23:57:53,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-20 23:57:53,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:57:53,597 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-20 23:57:53,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-20 23:57:53,598 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:57:53,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:57:53,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1420967643, now seen corresponding path program 1 times [2022-07-20 23:57:53,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:57:53,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595782362] [2022-07-20 23:57:53,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:57:53,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:57:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:57:53,748 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:57:53,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:57:53,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595782362] [2022-07-20 23:57:53,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595782362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:57:53,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:57:53,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:57:53,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680812664] [2022-07-20 23:57:53,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:57:53,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:57:53,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:57:53,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:57:53,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:57:53,751 INFO L87 Difference]: Start difference. First operand 13839 states and 16687 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:56,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:57:56,983 INFO L93 Difference]: Finished difference Result 33200 states and 41058 transitions. [2022-07-20 23:57:56,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:57:56,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 226 [2022-07-20 23:57:56,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:57:57,021 INFO L225 Difference]: With dead ends: 33200 [2022-07-20 23:57:57,021 INFO L226 Difference]: Without dead ends: 20150 [2022-07-20 23:57:57,034 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 [2022-07-20 23:57:57,035 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 861 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2388 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 3306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 2388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-20 23:57:57,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 943 Invalid, 3306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 2388 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-20 23:57:57,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20150 states. [2022-07-20 23:57:57,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20150 to 20140. [2022-07-20 23:57:57,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20140 states, 20139 states have (on average 1.1898803316947217) internal successors, (23963), 20139 states have internal predecessors, (23963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:57,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20140 states to 20140 states and 23963 transitions. [2022-07-20 23:57:57,352 INFO L78 Accepts]: Start accepts. Automaton has 20140 states and 23963 transitions. Word has length 226 [2022-07-20 23:57:57,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:57:57,353 INFO L495 AbstractCegarLoop]: Abstraction has 20140 states and 23963 transitions. [2022-07-20 23:57:57,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:57:57,354 INFO L276 IsEmpty]: Start isEmpty. Operand 20140 states and 23963 transitions. [2022-07-20 23:57:57,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-20 23:57:57,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:57:57,357 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-20 23:57:57,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-20 23:57:57,358 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:57:57,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:57:57,359 INFO L85 PathProgramCache]: Analyzing trace with hash -206220480, now seen corresponding path program 1 times [2022-07-20 23:57:57,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:57:57,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175127258] [2022-07-20 23:57:57,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:57:57,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:57:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:57:57,484 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:57:57,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:57:57,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175127258] [2022-07-20 23:57:57,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175127258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:57:57,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:57:57,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:57:57,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293518331] [2022-07-20 23:57:57,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:57:57,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:57:57,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:57:57,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:57:57,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:57:57,487 INFO L87 Difference]: Start difference. First operand 20140 states and 23963 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:00,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:00,516 INFO L93 Difference]: Finished difference Result 39361 states and 46953 transitions. [2022-07-20 23:58:00,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:00,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 241 [2022-07-20 23:58:00,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:00,553 INFO L225 Difference]: With dead ends: 39361 [2022-07-20 23:58:00,554 INFO L226 Difference]: Without dead ends: 20010 [2022-07-20 23:58:00,575 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 [2022-07-20 23:58:00,576 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 1037 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2350 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 2952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 2350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:00,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 1642 Invalid, 2952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 2350 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-20 23:58:00,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20010 states. [2022-07-20 23:58:00,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20010 to 19220. [2022-07-20 23:58:00,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19220 states, 19219 states have (on average 1.1321608824600655) internal successors, (21759), 19219 states have internal predecessors, (21759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:00,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19220 states to 19220 states and 21759 transitions. [2022-07-20 23:58:00,856 INFO L78 Accepts]: Start accepts. Automaton has 19220 states and 21759 transitions. Word has length 241 [2022-07-20 23:58:00,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:00,857 INFO L495 AbstractCegarLoop]: Abstraction has 19220 states and 21759 transitions. [2022-07-20 23:58:00,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:00,857 INFO L276 IsEmpty]: Start isEmpty. Operand 19220 states and 21759 transitions. [2022-07-20 23:58:00,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-07-20 23:58:00,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:00,863 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-20 23:58:00,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-20 23:58:00,867 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:00,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:00,867 INFO L85 PathProgramCache]: Analyzing trace with hash 113626786, now seen corresponding path program 1 times [2022-07-20 23:58:00,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:00,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93299744] [2022-07-20 23:58:00,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:00,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:01,029 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-07-20 23:58:01,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:01,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93299744] [2022-07-20 23:58:01,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93299744] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:01,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:01,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:01,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132244522] [2022-07-20 23:58:01,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:01,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:01,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:01,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:01,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:58:01,033 INFO L87 Difference]: Start difference. First operand 19220 states and 21759 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:04,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:04,446 INFO L93 Difference]: Finished difference Result 43955 states and 50452 transitions. [2022-07-20 23:58:04,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:04,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 315 [2022-07-20 23:58:04,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:04,479 INFO L225 Difference]: With dead ends: 43955 [2022-07-20 23:58:04,479 INFO L226 Difference]: Without dead ends: 25524 [2022-07-20 23:58:04,497 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 [2022-07-20 23:58:04,497 INFO L413 NwaCegarLoop]: 1777 mSDtfsCounter, 841 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 3252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:04,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1919 Invalid, 3252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [721 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-20 23:58:04,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25524 states. [2022-07-20 23:58:04,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25524 to 24733. [2022-07-20 23:58:04,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24733 states, 24732 states have (on average 1.118591298722303) internal successors, (27665), 24732 states have internal predecessors, (27665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:04,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24733 states to 24733 states and 27665 transitions. [2022-07-20 23:58:04,889 INFO L78 Accepts]: Start accepts. Automaton has 24733 states and 27665 transitions. Word has length 315 [2022-07-20 23:58:04,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:04,890 INFO L495 AbstractCegarLoop]: Abstraction has 24733 states and 27665 transitions. [2022-07-20 23:58:04,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:04,890 INFO L276 IsEmpty]: Start isEmpty. Operand 24733 states and 27665 transitions. [2022-07-20 23:58:04,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-07-20 23:58:04,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:04,896 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:04,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-20 23:58:04,897 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:04,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:04,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1008172382, now seen corresponding path program 1 times [2022-07-20 23:58:04,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:04,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655333768] [2022-07-20 23:58:04,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:04,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:05,017 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-20 23:58:05,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:05,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655333768] [2022-07-20 23:58:05,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655333768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:05,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:05,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:05,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218652224] [2022-07-20 23:58:05,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:05,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 23:58:05,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:05,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 23:58:05,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 23:58:05,020 INFO L87 Difference]: Start difference. First operand 24733 states and 27665 transitions. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:11,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:11,169 INFO L93 Difference]: Finished difference Result 91376 states and 102287 transitions. [2022-07-20 23:58:11,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 23:58:11,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 324 [2022-07-20 23:58:11,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:11,265 INFO L225 Difference]: With dead ends: 91376 [2022-07-20 23:58:11,266 INFO L226 Difference]: Without dead ends: 67432 [2022-07-20 23:58:11,297 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 [2022-07-20 23:58:11,299 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 1719 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 6001 mSolverCounterSat, 1099 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 7100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1099 IncrementalHoareTripleChecker+Valid, 6001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:11,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1719 Valid, 764 Invalid, 7100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1099 Valid, 6001 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-20 23:58:11,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67432 states. [2022-07-20 23:58:11,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67432 to 64949. [2022-07-20 23:58:11,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64949 states, 64948 states have (on average 1.1045605715341504) internal successors, (71739), 64948 states have internal predecessors, (71739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:12,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64949 states to 64949 states and 71739 transitions. [2022-07-20 23:58:12,062 INFO L78 Accepts]: Start accepts. Automaton has 64949 states and 71739 transitions. Word has length 324 [2022-07-20 23:58:12,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:12,062 INFO L495 AbstractCegarLoop]: Abstraction has 64949 states and 71739 transitions. [2022-07-20 23:58:12,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:12,063 INFO L276 IsEmpty]: Start isEmpty. Operand 64949 states and 71739 transitions. [2022-07-20 23:58:12,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-07-20 23:58:12,069 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:12,069 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-20 23:58:12,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-20 23:58:12,070 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:12,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:12,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1249030675, now seen corresponding path program 1 times [2022-07-20 23:58:12,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:12,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690849440] [2022-07-20 23:58:12,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:12,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:12,207 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-20 23:58:12,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:12,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690849440] [2022-07-20 23:58:12,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690849440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:12,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:12,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 23:58:12,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708680966] [2022-07-20 23:58:12,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:12,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:12,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:12,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:12,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:58:12,210 INFO L87 Difference]: Start difference. First operand 64949 states and 71739 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:15,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:15,613 INFO L93 Difference]: Finished difference Result 142510 states and 156966 transitions. [2022-07-20 23:58:15,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:15,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 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 324 [2022-07-20 23:58:15,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:15,724 INFO L225 Difference]: With dead ends: 142510 [2022-07-20 23:58:15,724 INFO L226 Difference]: Without dead ends: 77563 [2022-07-20 23:58:15,774 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 [2022-07-20 23:58:15,774 INFO L413 NwaCegarLoop]: 1000 mSDtfsCounter, 728 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 2689 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 2869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:15,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1175 Invalid, 2869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2689 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-20 23:58:15,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77563 states. [2022-07-20 23:58:16,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77563 to 75978. [2022-07-20 23:58:16,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75978 states, 75977 states have (on average 1.0951472156047224) internal successors, (83206), 75977 states have internal predecessors, (83206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:16,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75978 states to 75978 states and 83206 transitions. [2022-07-20 23:58:16,569 INFO L78 Accepts]: Start accepts. Automaton has 75978 states and 83206 transitions. Word has length 324 [2022-07-20 23:58:16,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:16,570 INFO L495 AbstractCegarLoop]: Abstraction has 75978 states and 83206 transitions. [2022-07-20 23:58:16,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:16,570 INFO L276 IsEmpty]: Start isEmpty. Operand 75978 states and 83206 transitions. [2022-07-20 23:58:16,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-07-20 23:58:16,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:16,578 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:16,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-20 23:58:16,578 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:16,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:16,579 INFO L85 PathProgramCache]: Analyzing trace with hash -152484837, now seen corresponding path program 1 times [2022-07-20 23:58:16,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:16,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982146019] [2022-07-20 23:58:16,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:16,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:16,911 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 218 proven. 113 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-20 23:58:16,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:16,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982146019] [2022-07-20 23:58:16,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982146019] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:58:16,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794755745] [2022-07-20 23:58:16,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:16,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:58:16,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:58:16,914 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) [2022-07-20 23:58:16,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-20 23:58:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:17,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 23:58:17,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:58:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-20 23:58:17,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 23:58:17,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794755745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:17,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 23:58:17,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-07-20 23:58:17,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669948785] [2022-07-20 23:58:17,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:17,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:17,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:17,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:17,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-20 23:58:17,260 INFO L87 Difference]: Start difference. First operand 75978 states and 83206 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:21,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:21,027 INFO L93 Difference]: Finished difference Result 151165 states and 165617 transitions. [2022-07-20 23:58:21,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:21,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 353 [2022-07-20 23:58:21,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:21,128 INFO L225 Difference]: With dead ends: 151165 [2022-07-20 23:58:21,128 INFO L226 Difference]: Without dead ends: 75976 [2022-07-20 23:58:21,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-20 23:58:21,246 INFO L413 NwaCegarLoop]: 1341 mSDtfsCounter, 1112 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:21,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 1420 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-20 23:58:21,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75976 states. [2022-07-20 23:58:21,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75976 to 75975. [2022-07-20 23:58:21,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75975 states, 75974 states have (on average 1.0758680601258326) internal successors, (81738), 75974 states have internal predecessors, (81738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:22,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75975 states to 75975 states and 81738 transitions. [2022-07-20 23:58:22,043 INFO L78 Accepts]: Start accepts. Automaton has 75975 states and 81738 transitions. Word has length 353 [2022-07-20 23:58:22,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:22,043 INFO L495 AbstractCegarLoop]: Abstraction has 75975 states and 81738 transitions. [2022-07-20 23:58:22,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:22,044 INFO L276 IsEmpty]: Start isEmpty. Operand 75975 states and 81738 transitions. [2022-07-20 23:58:22,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-07-20 23:58:22,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:22,053 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:22,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-20 23:58:22,275 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,SelfDestructingSolverStorable10 [2022-07-20 23:58:22,276 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:22,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:22,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2109393606, now seen corresponding path program 1 times [2022-07-20 23:58:22,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:22,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863978832] [2022-07-20 23:58:22,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:22,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-07-20 23:58:22,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:22,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863978832] [2022-07-20 23:58:22,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863978832] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:22,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:22,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:22,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534978300] [2022-07-20 23:58:22,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:22,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:22,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:22,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:22,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:58:22,631 INFO L87 Difference]: Start difference. First operand 75975 states and 81738 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) [2022-07-20 23:58:26,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:26,290 INFO L93 Difference]: Finished difference Result 171631 states and 185876 transitions. [2022-07-20 23:58:26,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:26,291 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 383 [2022-07-20 23:58:26,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:26,417 INFO L225 Difference]: With dead ends: 171631 [2022-07-20 23:58:26,417 INFO L226 Difference]: Without dead ends: 96445 [2022-07-20 23:58:26,434 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 [2022-07-20 23:58:26,435 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 891 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 934 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 3346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 934 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:26,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 881 Invalid, 3346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [934 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-20 23:58:26,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96445 states. [2022-07-20 23:58:27,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96445 to 93279. [2022-07-20 23:58:27,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93279 states, 93278 states have (on average 1.08082291644332) internal successors, (100817), 93278 states have internal predecessors, (100817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:27,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93279 states to 93279 states and 100817 transitions. [2022-07-20 23:58:27,470 INFO L78 Accepts]: Start accepts. Automaton has 93279 states and 100817 transitions. Word has length 383 [2022-07-20 23:58:27,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:27,470 INFO L495 AbstractCegarLoop]: Abstraction has 93279 states and 100817 transitions. [2022-07-20 23:58:27,470 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) [2022-07-20 23:58:27,471 INFO L276 IsEmpty]: Start isEmpty. Operand 93279 states and 100817 transitions. [2022-07-20 23:58:27,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-07-20 23:58:27,479 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:27,479 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2022-07-20 23:58:27,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-20 23:58:27,480 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:27,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:27,480 INFO L85 PathProgramCache]: Analyzing trace with hash 66240533, now seen corresponding path program 1 times [2022-07-20 23:58:27,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:27,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559092311] [2022-07-20 23:58:27,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:27,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:27,887 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-07-20 23:58:27,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:27,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559092311] [2022-07-20 23:58:27,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559092311] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:27,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:27,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:27,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982845809] [2022-07-20 23:58:27,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:27,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:27,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:27,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:27,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:58:27,890 INFO L87 Difference]: Start difference. First operand 93279 states and 100817 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:31,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:31,339 INFO L93 Difference]: Finished difference Result 185777 states and 200858 transitions. [2022-07-20 23:58:31,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:31,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 421 [2022-07-20 23:58:31,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:31,466 INFO L225 Difference]: With dead ends: 185777 [2022-07-20 23:58:31,466 INFO L226 Difference]: Without dead ends: 93287 [2022-07-20 23:58:31,503 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 [2022-07-20 23:58:31,503 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 794 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 679 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 3173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 679 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:31,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1841 Invalid, 3173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [679 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-20 23:58:31,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93287 states. [2022-07-20 23:58:32,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93287 to 92482. [2022-07-20 23:58:32,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92482 states, 92481 states have (on average 1.0581200462797764) internal successors, (97856), 92481 states have internal predecessors, (97856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:32,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92482 states to 92482 states and 97856 transitions. [2022-07-20 23:58:32,586 INFO L78 Accepts]: Start accepts. Automaton has 92482 states and 97856 transitions. Word has length 421 [2022-07-20 23:58:32,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:32,586 INFO L495 AbstractCegarLoop]: Abstraction has 92482 states and 97856 transitions. [2022-07-20 23:58:32,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:32,586 INFO L276 IsEmpty]: Start isEmpty. Operand 92482 states and 97856 transitions. [2022-07-20 23:58:32,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2022-07-20 23:58:32,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:32,595 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-20 23:58:32,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-20 23:58:32,596 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:32,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:32,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1419491106, now seen corresponding path program 1 times [2022-07-20 23:58:32,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:32,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015946432] [2022-07-20 23:58:32,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:32,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:33,117 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 287 proven. 113 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-20 23:58:33,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:33,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015946432] [2022-07-20 23:58:33,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015946432] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:58:33,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977139807] [2022-07-20 23:58:33,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:33,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:58:33,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:58:33,124 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) [2022-07-20 23:58:33,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-20 23:58:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:33,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 23:58:33,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:58:33,490 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-20 23:58:33,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 23:58:33,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977139807] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:33,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 23:58:33,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-07-20 23:58:33,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089490201] [2022-07-20 23:58:33,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:33,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:33,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:33,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:33,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-20 23:58:33,493 INFO L87 Difference]: Start difference. First operand 92482 states and 97856 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:36,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:36,573 INFO L93 Difference]: Finished difference Result 180995 states and 192682 transitions. [2022-07-20 23:58:36,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:36,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 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 457 [2022-07-20 23:58:36,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:36,837 INFO L225 Difference]: With dead ends: 180995 [2022-07-20 23:58:36,837 INFO L226 Difference]: Without dead ends: 102688 [2022-07-20 23:58:36,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-20 23:58:36,885 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1128 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 799 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 3056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 799 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:36,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 367 Invalid, 3056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [799 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-20 23:58:36,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102688 states. [2022-07-20 23:58:37,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102688 to 102688. [2022-07-20 23:58:37,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102688 states, 102687 states have (on average 1.0576022281301432) internal successors, (108602), 102687 states have internal predecessors, (108602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:38,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102688 states to 102688 states and 108602 transitions. [2022-07-20 23:58:38,051 INFO L78 Accepts]: Start accepts. Automaton has 102688 states and 108602 transitions. Word has length 457 [2022-07-20 23:58:38,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:38,052 INFO L495 AbstractCegarLoop]: Abstraction has 102688 states and 108602 transitions. [2022-07-20 23:58:38,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:38,052 INFO L276 IsEmpty]: Start isEmpty. Operand 102688 states and 108602 transitions. [2022-07-20 23:58:38,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2022-07-20 23:58:38,061 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:38,062 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-20 23:58:38,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-20 23:58:38,275 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,SelfDestructingSolverStorable13 [2022-07-20 23:58:38,276 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:38,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:38,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1347184657, now seen corresponding path program 1 times [2022-07-20 23:58:38,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:38,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774750830] [2022-07-20 23:58:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:38,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:38,578 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 287 proven. 113 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-20 23:58:38,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:38,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774750830] [2022-07-20 23:58:38,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774750830] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:58:38,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866583182] [2022-07-20 23:58:38,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:38,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:58:38,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:58:38,581 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 23:58:38,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-20 23:58:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:38,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 23:58:38,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:58:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 287 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-20 23:58:39,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 23:58:39,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866583182] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:39,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 23:58:39,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-20 23:58:39,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079367] [2022-07-20 23:58:39,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:39,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:39,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:39,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:39,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-20 23:58:39,588 INFO L87 Difference]: Start difference. First operand 102688 states and 108602 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 2 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:42,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:42,528 INFO L93 Difference]: Finished difference Result 195936 states and 207583 transitions. [2022-07-20 23:58:42,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:42,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 2 states have internal predecessors, (337), 0 states have call successors, (0), 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 473 [2022-07-20 23:58:42,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:42,643 INFO L225 Difference]: With dead ends: 195936 [2022-07-20 23:58:42,643 INFO L226 Difference]: Without dead ends: 105846 [2022-07-20 23:58:42,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-20 23:58:42,687 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 680 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2431 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 2539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:42,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1121 Invalid, 2539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2431 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-20 23:58:42,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105846 states. [2022-07-20 23:58:43,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105846 to 105837. [2022-07-20 23:58:43,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105837 states, 105836 states have (on average 1.051787671491742) internal successors, (111317), 105836 states have internal predecessors, (111317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:44,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105837 states to 105837 states and 111317 transitions. [2022-07-20 23:58:44,217 INFO L78 Accepts]: Start accepts. Automaton has 105837 states and 111317 transitions. Word has length 473 [2022-07-20 23:58:44,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:44,217 INFO L495 AbstractCegarLoop]: Abstraction has 105837 states and 111317 transitions. [2022-07-20 23:58:44,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 2 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:44,217 INFO L276 IsEmpty]: Start isEmpty. Operand 105837 states and 111317 transitions. [2022-07-20 23:58:44,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2022-07-20 23:58:44,224 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:44,224 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 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] [2022-07-20 23:58:44,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-20 23:58:44,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:58:44,425 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:44,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:44,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1426219641, now seen corresponding path program 1 times [2022-07-20 23:58:44,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:44,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831434570] [2022-07-20 23:58:44,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:44,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:44,607 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2022-07-20 23:58:44,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:44,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831434570] [2022-07-20 23:58:44,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831434570] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:44,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:44,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 23:58:44,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650368026] [2022-07-20 23:58:44,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:44,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:44,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:44,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:44,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:58:44,610 INFO L87 Difference]: Start difference. First operand 105837 states and 111317 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:46,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:46,767 INFO L93 Difference]: Finished difference Result 196696 states and 207202 transitions. [2022-07-20 23:58:46,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:46,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 512 [2022-07-20 23:58:46,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:46,906 INFO L225 Difference]: With dead ends: 196696 [2022-07-20 23:58:46,906 INFO L226 Difference]: Without dead ends: 105034 [2022-07-20 23:58:46,942 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 [2022-07-20 23:58:46,942 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 1558 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:46,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 275 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-20 23:58:47,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105034 states. [2022-07-20 23:58:47,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105034 to 105033. [2022-07-20 23:58:48,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105033 states, 105032 states have (on average 1.0504893746667683) internal successors, (110335), 105032 states have internal predecessors, (110335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:48,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105033 states to 105033 states and 110335 transitions. [2022-07-20 23:58:48,167 INFO L78 Accepts]: Start accepts. Automaton has 105033 states and 110335 transitions. Word has length 512 [2022-07-20 23:58:48,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:48,168 INFO L495 AbstractCegarLoop]: Abstraction has 105033 states and 110335 transitions. [2022-07-20 23:58:48,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:48,168 INFO L276 IsEmpty]: Start isEmpty. Operand 105033 states and 110335 transitions. [2022-07-20 23:58:48,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2022-07-20 23:58:48,177 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:48,177 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-20 23:58:48,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-20 23:58:48,178 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:48,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:48,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1193820110, now seen corresponding path program 1 times [2022-07-20 23:58:48,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:48,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076408973] [2022-07-20 23:58:48,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:48,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:48,763 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 412 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-07-20 23:58:48,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:48,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076408973] [2022-07-20 23:58:48,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076408973] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:48,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:48,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:48,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127874964] [2022-07-20 23:58:48,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:48,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:48,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:48,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:48,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:58:48,767 INFO L87 Difference]: Start difference. First operand 105033 states and 110335 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:52,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:52,134 INFO L93 Difference]: Finished difference Result 196682 states and 207037 transitions. [2022-07-20 23:58:52,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:52,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 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 526 [2022-07-20 23:58:52,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:52,267 INFO L225 Difference]: With dead ends: 196682 [2022-07-20 23:58:52,267 INFO L226 Difference]: Without dead ends: 105824 [2022-07-20 23:58:52,288 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 [2022-07-20 23:58:52,288 INFO L413 NwaCegarLoop]: 1704 mSDtfsCounter, 609 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 2432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:52,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 1828 Invalid, 2432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-20 23:58:52,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105824 states. [2022-07-20 23:58:53,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105824 to 105821. [2022-07-20 23:58:53,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105821 states, 105820 states have (on average 1.0503685503685503) internal successors, (111150), 105820 states have internal predecessors, (111150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:53,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105821 states to 105821 states and 111150 transitions. [2022-07-20 23:58:53,503 INFO L78 Accepts]: Start accepts. Automaton has 105821 states and 111150 transitions. Word has length 526 [2022-07-20 23:58:53,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:53,504 INFO L495 AbstractCegarLoop]: Abstraction has 105821 states and 111150 transitions. [2022-07-20 23:58:53,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:53,504 INFO L276 IsEmpty]: Start isEmpty. Operand 105821 states and 111150 transitions. [2022-07-20 23:58:53,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2022-07-20 23:58:53,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:53,515 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:58:53,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-20 23:58:53,516 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:53,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:53,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1535643174, now seen corresponding path program 1 times [2022-07-20 23:58:53,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:53,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539080904] [2022-07-20 23:58:53,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:53,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:53,716 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 623 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-07-20 23:58:53,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:53,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539080904] [2022-07-20 23:58:53,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539080904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:53,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:53,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:53,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665608285] [2022-07-20 23:58:53,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:53,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:53,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:53,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:53,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:58:53,719 INFO L87 Difference]: Start difference. First operand 105821 states and 111150 transitions. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:57,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:58:57,537 INFO L93 Difference]: Finished difference Result 233707 states and 246460 transitions. [2022-07-20 23:58:57,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:58:57,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 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 557 [2022-07-20 23:58:57,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:58:57,740 INFO L225 Difference]: With dead ends: 233707 [2022-07-20 23:58:57,740 INFO L226 Difference]: Without dead ends: 142061 [2022-07-20 23:58:57,803 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 [2022-07-20 23:58:57,804 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 949 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 852 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 3252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 852 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-20 23:58:57,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 661 Invalid, 3252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [852 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-20 23:58:57,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142061 states. [2022-07-20 23:58:59,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142061 to 142057. [2022-07-20 23:58:59,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142057 states, 142056 states have (on average 1.04936785493045) internal successors, (149069), 142056 states have internal predecessors, (149069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:59,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142057 states to 142057 states and 149069 transitions. [2022-07-20 23:58:59,757 INFO L78 Accepts]: Start accepts. Automaton has 142057 states and 149069 transitions. Word has length 557 [2022-07-20 23:58:59,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:58:59,757 INFO L495 AbstractCegarLoop]: Abstraction has 142057 states and 149069 transitions. [2022-07-20 23:58:59,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:58:59,757 INFO L276 IsEmpty]: Start isEmpty. Operand 142057 states and 149069 transitions. [2022-07-20 23:58:59,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2022-07-20 23:58:59,769 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:58:59,769 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2022-07-20 23:58:59,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-20 23:58:59,770 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:58:59,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:58:59,770 INFO L85 PathProgramCache]: Analyzing trace with hash -2008151319, now seen corresponding path program 1 times [2022-07-20 23:58:59,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:58:59,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273239731] [2022-07-20 23:58:59,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:58:59,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:58:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:58:59,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1016 backedges. 794 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-07-20 23:58:59,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:58:59,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273239731] [2022-07-20 23:58:59,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273239731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:58:59,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:58:59,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:58:59,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776081304] [2022-07-20 23:58:59,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:58:59,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:58:59,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:58:59,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:58:59,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:58:59,955 INFO L87 Difference]: Start difference. First operand 142057 states and 149069 transitions. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:59:03,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:59:03,460 INFO L93 Difference]: Finished difference Result 284908 states and 298944 transitions. [2022-07-20 23:59:03,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:59:03,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 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 604 [2022-07-20 23:59:03,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:59:03,632 INFO L225 Difference]: With dead ends: 284908 [2022-07-20 23:59:03,632 INFO L226 Difference]: Without dead ends: 143640 [2022-07-20 23:59:03,706 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 [2022-07-20 23:59:03,707 INFO L413 NwaCegarLoop]: 1328 mSDtfsCounter, 914 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 561 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 2924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 561 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-20 23:59:03,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 1402 Invalid, 2924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [561 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-20 23:59:04,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143640 states. [2022-07-20 23:59:05,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143640 to 142055. [2022-07-20 23:59:05,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142055 states, 142054 states have (on average 1.041336393202585) internal successors, (147926), 142054 states have internal predecessors, (147926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:59:05,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142055 states to 142055 states and 147926 transitions. [2022-07-20 23:59:05,683 INFO L78 Accepts]: Start accepts. Automaton has 142055 states and 147926 transitions. Word has length 604 [2022-07-20 23:59:05,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:59:05,683 INFO L495 AbstractCegarLoop]: Abstraction has 142055 states and 147926 transitions. [2022-07-20 23:59:05,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:59:05,684 INFO L276 IsEmpty]: Start isEmpty. Operand 142055 states and 147926 transitions. [2022-07-20 23:59:05,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2022-07-20 23:59:05,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:59:05,696 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2022-07-20 23:59:05,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-20 23:59:05,697 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:59:05,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:59:05,697 INFO L85 PathProgramCache]: Analyzing trace with hash -396988463, now seen corresponding path program 1 times [2022-07-20 23:59:05,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:59:05,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618479615] [2022-07-20 23:59:05,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:05,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:59:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 799 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-20 23:59:05,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:59:05,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618479615] [2022-07-20 23:59:05,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618479615] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:59:05,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:59:05,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:59:05,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139364263] [2022-07-20 23:59:05,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:59:05,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:59:05,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:59:05,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:59:05,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:59:05,931 INFO L87 Difference]: Start difference. First operand 142055 states and 147926 transitions. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:59:09,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:59:09,305 INFO L93 Difference]: Finished difference Result 271527 states and 283053 transitions. [2022-07-20 23:59:09,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:59:09,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 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 606 [2022-07-20 23:59:09,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:59:09,482 INFO L225 Difference]: With dead ends: 271527 [2022-07-20 23:59:09,482 INFO L226 Difference]: Without dead ends: 142068 [2022-07-20 23:59:09,556 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 [2022-07-20 23:59:09,557 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 771 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2414 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-20 23:59:09,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 1711 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2414 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-20 23:59:09,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142068 states. [2022-07-20 23:59:11,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142068 to 142051. [2022-07-20 23:59:11,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142051 states, 142050 states have (on average 1.0384794086589229) internal successors, (147516), 142050 states have internal predecessors, (147516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:59:11,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142051 states to 142051 states and 147516 transitions. [2022-07-20 23:59:11,495 INFO L78 Accepts]: Start accepts. Automaton has 142051 states and 147516 transitions. Word has length 606 [2022-07-20 23:59:11,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:59:11,496 INFO L495 AbstractCegarLoop]: Abstraction has 142051 states and 147516 transitions. [2022-07-20 23:59:11,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:59:11,496 INFO L276 IsEmpty]: Start isEmpty. Operand 142051 states and 147516 transitions. [2022-07-20 23:59:11,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2022-07-20 23:59:11,506 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:59:11,506 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-20 23:59:11,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-20 23:59:11,507 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:59:11,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:59:11,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1315800132, now seen corresponding path program 1 times [2022-07-20 23:59:11,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:59:11,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708356992] [2022-07-20 23:59:11,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:59:11,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:59:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:59:11,700 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 507 proven. 0 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2022-07-20 23:59:11,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:59:11,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708356992] [2022-07-20 23:59:11,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708356992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:59:11,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:59:11,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:59:11,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322966911] [2022-07-20 23:59:11,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:59:11,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:59:11,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:59:11,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:59:11,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:59:11,703 INFO L87 Difference]: Start difference. First operand 142051 states and 147516 transitions. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)