./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem04_label12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem04_label12.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 03d8c36b2b461f2e971b6e7a5a6a75d5c3ec3fc4aa27ca1a57d652ec13d33c8f --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 11:50:23,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 11:50:23,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 11:50:23,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 11:50:23,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 11:50:23,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 11:50:23,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 11:50:23,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 11:50:23,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 11:50:23,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 11:50:23,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 11:50:23,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 11:50:23,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 11:50:23,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 11:50:23,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 11:50:23,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 11:50:23,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 11:50:23,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 11:50:23,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 11:50:23,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 11:50:23,258 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 11:50:23,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 11:50:23,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 11:50:23,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 11:50:23,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 11:50:23,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 11:50:23,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 11:50:23,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 11:50:23,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 11:50:23,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 11:50:23,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 11:50:23,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 11:50:23,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 11:50:23,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 11:50:23,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 11:50:23,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 11:50:23,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 11:50:23,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 11:50:23,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 11:50:23,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 11:50:23,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 11:50:23,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 11:50:23,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 11:50:23,297 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 11:50:23,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 11:50:23,298 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 11:50:23,298 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 11:50:23,299 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 11:50:23,300 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 11:50:23,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 11:50:23,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 11:50:23,301 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 11:50:23,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 11:50:23,302 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 11:50:23,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 11:50:23,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 11:50:23,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 11:50:23,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 11:50:23,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 11:50:23,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 11:50:23,303 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 11:50:23,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 11:50:23,304 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 11:50:23,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 11:50:23,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 11:50:23,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 11:50:23,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 11:50:23,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:50:23,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 11:50:23,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 11:50:23,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 11:50:23,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 11:50:23,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 11:50:23,306 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 11:50:23,306 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 11:50:23,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 11:50:23,307 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03d8c36b2b461f2e971b6e7a5a6a75d5c3ec3fc4aa27ca1a57d652ec13d33c8f [2022-07-13 11:50:23,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 11:50:23,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 11:50:23,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 11:50:23,568 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 11:50:23,569 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 11:50:23,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem04_label12.c [2022-07-13 11:50:23,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaf0ef8c8/fa6c87ba3c5a4a699441215dc52cbf78/FLAGac92bce9b [2022-07-13 11:50:24,292 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 11:50:24,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label12.c [2022-07-13 11:50:24,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaf0ef8c8/fa6c87ba3c5a4a699441215dc52cbf78/FLAGac92bce9b [2022-07-13 11:50:24,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaf0ef8c8/fa6c87ba3c5a4a699441215dc52cbf78 [2022-07-13 11:50:24,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 11:50:24,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 11:50:24,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 11:50:24,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 11:50:24,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 11:50:24,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:50:24" (1/1) ... [2022-07-13 11:50:24,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f70c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:50:24, skipping insertion in model container [2022-07-13 11:50:24,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:50:24" (1/1) ... [2022-07-13 11:50:24,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 11:50:24,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 11:50:25,747 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/Problem04_label12.c[176369,176382] [2022-07-13 11:50:25,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:50:25,787 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 11:50:26,173 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/Problem04_label12.c[176369,176382] [2022-07-13 11:50:26,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:50:26,234 INFO L208 MainTranslator]: Completed translation [2022-07-13 11:50:26,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:50:26 WrapperNode [2022-07-13 11:50:26,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 11:50:26,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 11:50:26,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 11:50:26,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 11:50:26,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:50:26" (1/1) ... [2022-07-13 11:50:26,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:50:26" (1/1) ... [2022-07-13 11:50:26,506 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5572 [2022-07-13 11:50:26,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 11:50:26,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 11:50:26,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 11:50:26,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 11:50:26,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:50:26" (1/1) ... [2022-07-13 11:50:26,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:50:26" (1/1) ... [2022-07-13 11:50:26,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:50:26" (1/1) ... [2022-07-13 11:50:26,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:50:26" (1/1) ... [2022-07-13 11:50:26,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:50:26" (1/1) ... [2022-07-13 11:50:26,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:50:26" (1/1) ... [2022-07-13 11:50:26,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:50:26" (1/1) ... [2022-07-13 11:50:26,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 11:50:26,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 11:50:26,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 11:50:26,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 11:50:26,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:50:26" (1/1) ... [2022-07-13 11:50:26,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:50:26,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:50:26,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 11:50:26,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 11:50:26,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 11:50:26,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 11:50:26,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 11:50:26,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 11:50:27,048 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 11:50:27,050 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 11:50:30,245 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 11:50:30,274 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 11:50:30,282 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 11:50:30,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:50:30 BoogieIcfgContainer [2022-07-13 11:50:30,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 11:50:30,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 11:50:30,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 11:50:30,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 11:50:30,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:50:24" (1/3) ... [2022-07-13 11:50:30,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59529370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:50:30, skipping insertion in model container [2022-07-13 11:50:30,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:50:26" (2/3) ... [2022-07-13 11:50:30,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59529370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:50:30, skipping insertion in model container [2022-07-13 11:50:30,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:50:30" (3/3) ... [2022-07-13 11:50:30,295 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label12.c [2022-07-13 11:50:30,310 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 11:50:30,311 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 11:50:30,382 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 11:50:30,389 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@13d80c71, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@510777a5 [2022-07-13 11:50:30,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 11:50:30,398 INFO L276 IsEmpty]: Start isEmpty. Operand has 885 states, 883 states have (on average 1.9229898074745186) internal successors, (1698), 884 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:30,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2022-07-13 11:50:30,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:50:30,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:50:30,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:50:30,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:50:30,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1575289469, now seen corresponding path program 1 times [2022-07-13 11:50:30,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:50:30,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395215393] [2022-07-13 11:50:30,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:50:30,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:50:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:50:32,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:50:32,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:50:32,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395215393] [2022-07-13 11:50:32,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395215393] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:50:32,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:50:32,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 11:50:32,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830295526] [2022-07-13 11:50:32,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:50:32,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 11:50:32,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:50:32,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 11:50:32,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-07-13 11:50:32,468 INFO L87 Difference]: Start difference. First operand has 885 states, 883 states have (on average 1.9229898074745186) internal successors, (1698), 884 states have internal predecessors, (1698), 0 states have call successors, (0), 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 12 states, 12 states have (on average 63.0) internal successors, (756), 11 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:37,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:50:37,649 INFO L93 Difference]: Finished difference Result 2490 states and 4835 transitions. [2022-07-13 11:50:37,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 11:50:37,652 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 63.0) internal successors, (756), 11 states have internal predecessors, (756), 0 states have call successors, (0), 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 756 [2022-07-13 11:50:37,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:50:37,690 INFO L225 Difference]: With dead ends: 2490 [2022-07-13 11:50:37,690 INFO L226 Difference]: Without dead ends: 1541 [2022-07-13 11:50:37,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2022-07-13 11:50:37,703 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 2108 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 6526 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 7237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 6526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-07-13 11:50:37,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 964 Invalid, 7237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 6526 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-07-13 11:50:37,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2022-07-13 11:50:37,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1541. [2022-07-13 11:50:37,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1540 states have (on average 1.490909090909091) internal successors, (2296), 1540 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:37,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2296 transitions. [2022-07-13 11:50:37,806 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2296 transitions. Word has length 756 [2022-07-13 11:50:37,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:50:37,808 INFO L495 AbstractCegarLoop]: Abstraction has 1541 states and 2296 transitions. [2022-07-13 11:50:37,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 63.0) internal successors, (756), 11 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:37,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2296 transitions. [2022-07-13 11:50:37,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2022-07-13 11:50:37,833 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:50:37,833 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:50:37,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 11:50:37,834 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:50:37,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:50:37,836 INFO L85 PathProgramCache]: Analyzing trace with hash -418435746, now seen corresponding path program 1 times [2022-07-13 11:50:37,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:50:37,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774457081] [2022-07-13 11:50:37,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:50:37,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:50:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:50:39,025 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:50:39,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:50:39,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774457081] [2022-07-13 11:50:39,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774457081] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:50:39,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:50:39,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 11:50:39,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83738860] [2022-07-13 11:50:39,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:50:39,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 11:50:39,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:50:39,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 11:50:39,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-07-13 11:50:39,032 INFO L87 Difference]: Start difference. First operand 1541 states and 2296 transitions. Second operand has 13 states, 13 states have (on average 59.30769230769231) internal successors, (771), 12 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:45,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:50:45,351 INFO L93 Difference]: Finished difference Result 3865 states and 6804 transitions. [2022-07-13 11:50:45,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 11:50:45,352 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 59.30769230769231) internal successors, (771), 12 states have internal predecessors, (771), 0 states have call successors, (0), 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 771 [2022-07-13 11:50:45,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:50:45,364 INFO L225 Difference]: With dead ends: 3865 [2022-07-13 11:50:45,365 INFO L226 Difference]: Without dead ends: 3045 [2022-07-13 11:50:45,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=167, Unknown=0, NotChecked=0, Total=272 [2022-07-13 11:50:45,368 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 2558 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 10065 mSolverCounterSat, 1410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2558 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 11475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1410 IncrementalHoareTripleChecker+Valid, 10065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:50:45,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2558 Valid, 910 Invalid, 11475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1410 Valid, 10065 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-07-13 11:50:45,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2022-07-13 11:50:45,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 3045. [2022-07-13 11:50:45,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3045 states, 3044 states have (on average 1.2598554533508541) internal successors, (3835), 3044 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:45,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3045 states to 3045 states and 3835 transitions. [2022-07-13 11:50:45,421 INFO L78 Accepts]: Start accepts. Automaton has 3045 states and 3835 transitions. Word has length 771 [2022-07-13 11:50:45,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:50:45,422 INFO L495 AbstractCegarLoop]: Abstraction has 3045 states and 3835 transitions. [2022-07-13 11:50:45,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 59.30769230769231) internal successors, (771), 12 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:45,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3045 states and 3835 transitions. [2022-07-13 11:50:45,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2022-07-13 11:50:45,431 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:50:45,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:50:45,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 11:50:45,432 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:50:45,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:50:45,433 INFO L85 PathProgramCache]: Analyzing trace with hash -131445686, now seen corresponding path program 1 times [2022-07-13 11:50:45,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:50:45,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427451456] [2022-07-13 11:50:45,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:50:45,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:50:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:50:45,944 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 11:50:45,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:50:45,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427451456] [2022-07-13 11:50:45,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427451456] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:50:45,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:50:45,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:50:45,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529910] [2022-07-13 11:50:45,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:50:45,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:50:45,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:50:45,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:50:45,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:50:45,949 INFO L87 Difference]: Start difference. First operand 3045 states and 3835 transitions. Second operand has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 2 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:48,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:50:48,200 INFO L93 Difference]: Finished difference Result 6187 states and 8513 transitions. [2022-07-13 11:50:48,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:50:48,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 2 states have internal predecessors, (758), 0 states have call successors, (0), 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 778 [2022-07-13 11:50:48,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:50:48,216 INFO L225 Difference]: With dead ends: 6187 [2022-07-13 11:50:48,216 INFO L226 Difference]: Without dead ends: 3863 [2022-07-13 11:50:48,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:50:48,222 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 179 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2784 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 3164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 2784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:50:48,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 190 Invalid, 3164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 2784 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 11:50:48,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3863 states. [2022-07-13 11:50:48,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3863 to 3863. [2022-07-13 11:50:48,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3863 states, 3862 states have (on average 1.3555152770585188) internal successors, (5235), 3862 states have internal predecessors, (5235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:48,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3863 states to 3863 states and 5235 transitions. [2022-07-13 11:50:48,285 INFO L78 Accepts]: Start accepts. Automaton has 3863 states and 5235 transitions. Word has length 778 [2022-07-13 11:50:48,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:50:48,286 INFO L495 AbstractCegarLoop]: Abstraction has 3863 states and 5235 transitions. [2022-07-13 11:50:48,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 2 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:48,287 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states and 5235 transitions. [2022-07-13 11:50:48,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2022-07-13 11:50:48,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:50:48,298 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:50:48,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 11:50:48,298 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:50:48,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:50:48,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2118584548, now seen corresponding path program 1 times [2022-07-13 11:50:48,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:50:48,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236540870] [2022-07-13 11:50:48,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:50:48,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:50:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:50:48,533 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:50:48,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:50:48,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236540870] [2022-07-13 11:50:48,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236540870] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:50:48,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:50:48,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:50:48,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712380126] [2022-07-13 11:50:48,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:50:48,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:50:48,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:50:48,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:50:48,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:50:48,536 INFO L87 Difference]: Start difference. First operand 3863 states and 5235 transitions. Second operand has 4 states, 4 states have (on average 195.5) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:52,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:50:52,199 INFO L93 Difference]: Finished difference Result 11095 states and 16530 transitions. [2022-07-13 11:50:52,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:50:52,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 195.5) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 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 782 [2022-07-13 11:50:52,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:50:52,223 INFO L225 Difference]: With dead ends: 11095 [2022-07-13 11:50:52,223 INFO L226 Difference]: Without dead ends: 7953 [2022-07-13 11:50:52,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:50:52,229 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 1763 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4654 mSolverCounterSat, 981 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1763 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 5635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 981 IncrementalHoareTripleChecker+Valid, 4654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:50:52,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1763 Valid, 339 Invalid, 5635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [981 Valid, 4654 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-13 11:50:52,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7953 states. [2022-07-13 11:50:52,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7953 to 7135. [2022-07-13 11:50:52,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7135 states, 7134 states have (on average 1.4171572750210262) internal successors, (10110), 7134 states have internal predecessors, (10110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:52,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7135 states to 7135 states and 10110 transitions. [2022-07-13 11:50:52,387 INFO L78 Accepts]: Start accepts. Automaton has 7135 states and 10110 transitions. Word has length 782 [2022-07-13 11:50:52,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:50:52,387 INFO L495 AbstractCegarLoop]: Abstraction has 7135 states and 10110 transitions. [2022-07-13 11:50:52,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 195.5) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:52,388 INFO L276 IsEmpty]: Start isEmpty. Operand 7135 states and 10110 transitions. [2022-07-13 11:50:52,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2022-07-13 11:50:52,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:50:52,408 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:50:52,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 11:50:52,409 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:50:52,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:50:52,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1878320354, now seen corresponding path program 1 times [2022-07-13 11:50:52,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:50:52,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604841515] [2022-07-13 11:50:52,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:50:52,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:50:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:50:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 11:50:52,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:50:52,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604841515] [2022-07-13 11:50:52,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604841515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:50:52,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:50:52,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:50:52,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19850646] [2022-07-13 11:50:52,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:50:52,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:50:52,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:50:52,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:50:52,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:50:52,824 INFO L87 Difference]: Start difference. First operand 7135 states and 10110 transitions. Second operand has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:55,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:50:55,191 INFO L93 Difference]: Finished difference Result 14367 states and 20342 transitions. [2022-07-13 11:50:55,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:50:55,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 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 784 [2022-07-13 11:50:55,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:50:55,219 INFO L225 Difference]: With dead ends: 14367 [2022-07-13 11:50:55,220 INFO L226 Difference]: Without dead ends: 7135 [2022-07-13 11:50:55,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:50:55,228 INFO L413 NwaCegarLoop]: 1367 mSDtfsCounter, 229 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2101 mSolverCounterSat, 894 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 2995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 894 IncrementalHoareTripleChecker+Valid, 2101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:50:55,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1376 Invalid, 2995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [894 Valid, 2101 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 11:50:55,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7135 states. [2022-07-13 11:50:55,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7135 to 7135. [2022-07-13 11:50:55,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7135 states, 7134 states have (on average 1.3040370058873003) internal successors, (9303), 7134 states have internal predecessors, (9303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:55,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7135 states to 7135 states and 9303 transitions. [2022-07-13 11:50:55,341 INFO L78 Accepts]: Start accepts. Automaton has 7135 states and 9303 transitions. Word has length 784 [2022-07-13 11:50:55,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:50:55,342 INFO L495 AbstractCegarLoop]: Abstraction has 7135 states and 9303 transitions. [2022-07-13 11:50:55,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:55,343 INFO L276 IsEmpty]: Start isEmpty. Operand 7135 states and 9303 transitions. [2022-07-13 11:50:55,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2022-07-13 11:50:55,362 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:50:55,362 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:50:55,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 11:50:55,364 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:50:55,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:50:55,364 INFO L85 PathProgramCache]: Analyzing trace with hash -472211717, now seen corresponding path program 1 times [2022-07-13 11:50:55,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:50:55,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028508167] [2022-07-13 11:50:55,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:50:55,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:50:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:50:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 11:50:55,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:50:55,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028508167] [2022-07-13 11:50:55,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028508167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:50:55,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:50:55,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:50:55,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610949108] [2022-07-13 11:50:55,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:50:55,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:50:55,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:50:55,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:50:55,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:50:55,582 INFO L87 Difference]: Start difference. First operand 7135 states and 9303 transitions. Second operand has 3 states, 3 states have (on average 260.0) internal successors, (780), 2 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:57,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:50:57,959 INFO L93 Difference]: Finished difference Result 16821 states and 22753 transitions. [2022-07-13 11:50:57,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:50:57,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 260.0) internal successors, (780), 2 states have internal predecessors, (780), 0 states have call successors, (0), 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 789 [2022-07-13 11:50:57,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:50:57,987 INFO L225 Difference]: With dead ends: 16821 [2022-07-13 11:50:57,987 INFO L226 Difference]: Without dead ends: 10407 [2022-07-13 11:50:57,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:50:57,997 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 969 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2292 mSolverCounterSat, 908 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 3200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 908 IncrementalHoareTripleChecker+Valid, 2292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:50:57,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 308 Invalid, 3200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [908 Valid, 2292 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 11:50:58,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10407 states. [2022-07-13 11:50:58,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10407 to 10407. [2022-07-13 11:50:58,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10407 states, 10406 states have (on average 1.309725158562368) internal successors, (13629), 10406 states have internal predecessors, (13629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:58,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10407 states to 10407 states and 13629 transitions. [2022-07-13 11:50:58,201 INFO L78 Accepts]: Start accepts. Automaton has 10407 states and 13629 transitions. Word has length 789 [2022-07-13 11:50:58,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:50:58,201 INFO L495 AbstractCegarLoop]: Abstraction has 10407 states and 13629 transitions. [2022-07-13 11:50:58,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.0) internal successors, (780), 2 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:50:58,202 INFO L276 IsEmpty]: Start isEmpty. Operand 10407 states and 13629 transitions. [2022-07-13 11:50:58,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 834 [2022-07-13 11:50:58,222 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:50:58,222 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:50:58,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 11:50:58,224 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:50:58,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:50:58,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1760767868, now seen corresponding path program 1 times [2022-07-13 11:50:58,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:50:58,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687418134] [2022-07-13 11:50:58,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:50:58,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:50:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:50:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 11:50:58,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:50:58,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687418134] [2022-07-13 11:50:58,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687418134] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:50:58,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:50:58,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:50:58,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635060379] [2022-07-13 11:50:58,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:50:58,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:50:58,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:50:58,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:50:58,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:50:58,463 INFO L87 Difference]: Start difference. First operand 10407 states and 13629 transitions. Second operand has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 2 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:00,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:51:00,887 INFO L93 Difference]: Finished difference Result 28273 states and 37895 transitions. [2022-07-13 11:51:00,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:51:00,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 2 states have internal predecessors, (808), 0 states have call successors, (0), 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 833 [2022-07-13 11:51:00,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:51:00,925 INFO L225 Difference]: With dead ends: 28273 [2022-07-13 11:51:00,925 INFO L226 Difference]: Without dead ends: 18587 [2022-07-13 11:51:00,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:51:00,941 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 872 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 1075 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 3183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1075 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:51:00,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 599 Invalid, 3183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1075 Valid, 2108 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 11:51:00,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18587 states. [2022-07-13 11:51:01,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18587 to 18587. [2022-07-13 11:51:01,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18587 states, 18586 states have (on average 1.2406112127407727) internal successors, (23058), 18586 states have internal predecessors, (23058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:01,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18587 states to 18587 states and 23058 transitions. [2022-07-13 11:51:01,255 INFO L78 Accepts]: Start accepts. Automaton has 18587 states and 23058 transitions. Word has length 833 [2022-07-13 11:51:01,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:51:01,256 INFO L495 AbstractCegarLoop]: Abstraction has 18587 states and 23058 transitions. [2022-07-13 11:51:01,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 2 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:01,256 INFO L276 IsEmpty]: Start isEmpty. Operand 18587 states and 23058 transitions. [2022-07-13 11:51:01,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 921 [2022-07-13 11:51:01,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:51:01,290 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:51:01,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 11:51:01,290 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:51:01,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:51:01,291 INFO L85 PathProgramCache]: Analyzing trace with hash -167834254, now seen corresponding path program 1 times [2022-07-13 11:51:01,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:51:01,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901503529] [2022-07-13 11:51:01,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:51:01,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:51:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:51:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 11:51:01,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:51:01,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901503529] [2022-07-13 11:51:01,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901503529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:51:01,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:51:01,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:51:01,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863099679] [2022-07-13 11:51:01,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:51:01,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:51:01,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:51:01,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:51:01,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:51:01,555 INFO L87 Difference]: Start difference. First operand 18587 states and 23058 transitions. Second operand has 3 states, 3 states have (on average 298.3333333333333) internal successors, (895), 2 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:04,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:51:04,113 INFO L93 Difference]: Finished difference Result 51995 states and 65298 transitions. [2022-07-13 11:51:04,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:51:04,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 298.3333333333333) internal successors, (895), 2 states have internal predecessors, (895), 0 states have call successors, (0), 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 920 [2022-07-13 11:51:04,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:51:04,168 INFO L225 Difference]: With dead ends: 51995 [2022-07-13 11:51:04,168 INFO L226 Difference]: Without dead ends: 34129 [2022-07-13 11:51:04,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:51:04,187 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 850 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 1061 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 3134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1061 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:51:04,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 587 Invalid, 3134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1061 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 11:51:04,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34129 states. [2022-07-13 11:51:04,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34129 to 28403. [2022-07-13 11:51:04,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28403 states, 28402 states have (on average 1.2050559819731004) internal successors, (34226), 28402 states have internal predecessors, (34226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:04,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28403 states to 28403 states and 34226 transitions. [2022-07-13 11:51:04,573 INFO L78 Accepts]: Start accepts. Automaton has 28403 states and 34226 transitions. Word has length 920 [2022-07-13 11:51:04,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:51:04,574 INFO L495 AbstractCegarLoop]: Abstraction has 28403 states and 34226 transitions. [2022-07-13 11:51:04,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 298.3333333333333) internal successors, (895), 2 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:04,574 INFO L276 IsEmpty]: Start isEmpty. Operand 28403 states and 34226 transitions. [2022-07-13 11:51:04,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 938 [2022-07-13 11:51:04,615 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:51:04,615 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:51:04,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 11:51:04,616 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:51:04,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:51:04,617 INFO L85 PathProgramCache]: Analyzing trace with hash -2055313920, now seen corresponding path program 1 times [2022-07-13 11:51:04,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:51:04,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828054224] [2022-07-13 11:51:04,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:51:04,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:51:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:51:04,952 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-07-13 11:51:04,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:51:04,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828054224] [2022-07-13 11:51:04,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828054224] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:51:04,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:51:04,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:51:04,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138774778] [2022-07-13 11:51:04,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:51:04,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:51:04,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:51:04,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:51:04,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:51:04,957 INFO L87 Difference]: Start difference. First operand 28403 states and 34226 transitions. Second operand has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:07,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:51:07,422 INFO L93 Difference]: Finished difference Result 61811 states and 74100 transitions. [2022-07-13 11:51:07,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:51:07,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 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 937 [2022-07-13 11:51:07,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:51:07,469 INFO L225 Difference]: With dead ends: 61811 [2022-07-13 11:51:07,469 INFO L226 Difference]: Without dead ends: 31675 [2022-07-13 11:51:07,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:51:07,496 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 928 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 1005 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1005 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:51:07,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 1404 Invalid, 2979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1005 Valid, 1974 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 11:51:07,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31675 states. [2022-07-13 11:51:07,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31675 to 28403. [2022-07-13 11:51:07,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28403 states, 28402 states have (on average 1.1269980987254418) internal successors, (32009), 28402 states have internal predecessors, (32009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:07,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28403 states to 28403 states and 32009 transitions. [2022-07-13 11:51:07,850 INFO L78 Accepts]: Start accepts. Automaton has 28403 states and 32009 transitions. Word has length 937 [2022-07-13 11:51:07,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:51:07,851 INFO L495 AbstractCegarLoop]: Abstraction has 28403 states and 32009 transitions. [2022-07-13 11:51:07,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:07,851 INFO L276 IsEmpty]: Start isEmpty. Operand 28403 states and 32009 transitions. [2022-07-13 11:51:07,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1046 [2022-07-13 11:51:07,999 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:51:08,000 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:51:08,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 11:51:08,001 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:51:08,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:51:08,003 INFO L85 PathProgramCache]: Analyzing trace with hash 926448206, now seen corresponding path program 1 times [2022-07-13 11:51:08,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:51:08,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133924826] [2022-07-13 11:51:08,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:51:08,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:51:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:51:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 408 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-07-13 11:51:08,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:51:08,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133924826] [2022-07-13 11:51:08,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133924826] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:51:08,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:51:08,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:51:08,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133405179] [2022-07-13 11:51:08,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:51:08,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:51:08,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:51:08,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:51:08,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:51:08,295 INFO L87 Difference]: Start difference. First operand 28403 states and 32009 transitions. Second operand has 3 states, 3 states have (on average 294.0) internal successors, (882), 2 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:10,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:51:10,715 INFO L93 Difference]: Finished difference Result 69991 states and 79928 transitions. [2022-07-13 11:51:10,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:51:10,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 294.0) internal successors, (882), 2 states have internal predecessors, (882), 0 states have call successors, (0), 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 1045 [2022-07-13 11:51:10,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:51:10,773 INFO L225 Difference]: With dead ends: 69991 [2022-07-13 11:51:10,773 INFO L226 Difference]: Without dead ends: 42309 [2022-07-13 11:51:10,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:51:10,800 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 911 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2165 mSolverCounterSat, 994 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 3159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 994 IncrementalHoareTripleChecker+Valid, 2165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:51:10,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 306 Invalid, 3159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [994 Valid, 2165 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 11:51:10,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42309 states. [2022-07-13 11:51:11,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42309 to 42309. [2022-07-13 11:51:11,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42309 states, 42308 states have (on average 1.1177318710409379) internal successors, (47289), 42308 states have internal predecessors, (47289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:11,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42309 states to 42309 states and 47289 transitions. [2022-07-13 11:51:11,326 INFO L78 Accepts]: Start accepts. Automaton has 42309 states and 47289 transitions. Word has length 1045 [2022-07-13 11:51:11,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:51:11,326 INFO L495 AbstractCegarLoop]: Abstraction has 42309 states and 47289 transitions. [2022-07-13 11:51:11,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 294.0) internal successors, (882), 2 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:11,326 INFO L276 IsEmpty]: Start isEmpty. Operand 42309 states and 47289 transitions. [2022-07-13 11:51:11,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1164 [2022-07-13 11:51:11,367 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:51:11,368 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:51:11,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 11:51:11,368 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:51:11,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:51:11,369 INFO L85 PathProgramCache]: Analyzing trace with hash -670367407, now seen corresponding path program 1 times [2022-07-13 11:51:11,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:51:11,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776922372] [2022-07-13 11:51:11,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:51:11,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:51:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:51:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 740 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-07-13 11:51:11,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:51:11,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776922372] [2022-07-13 11:51:11,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776922372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:51:11,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:51:11,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:51:11,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454464860] [2022-07-13 11:51:11,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:51:11,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:51:11,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:51:11,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:51:11,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:51:11,746 INFO L87 Difference]: Start difference. First operand 42309 states and 47289 transitions. Second operand has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:14,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:51:14,428 INFO L93 Difference]: Finished difference Result 113345 states and 127315 transitions. [2022-07-13 11:51:14,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:51:14,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 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 1163 [2022-07-13 11:51:14,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:51:14,531 INFO L225 Difference]: With dead ends: 113345 [2022-07-13 11:51:14,532 INFO L226 Difference]: Without dead ends: 71757 [2022-07-13 11:51:14,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:51:14,571 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 896 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2289 mSolverCounterSat, 1000 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 3289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1000 IncrementalHoareTripleChecker+Valid, 2289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:51:14,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 514 Invalid, 3289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1000 Valid, 2289 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 11:51:14,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71757 states. [2022-07-13 11:51:15,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71757 to 67667. [2022-07-13 11:51:15,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67667 states, 67666 states have (on average 1.1173853929595365) internal successors, (75609), 67666 states have internal predecessors, (75609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67667 states to 67667 states and 75609 transitions. [2022-07-13 11:51:15,471 INFO L78 Accepts]: Start accepts. Automaton has 67667 states and 75609 transitions. Word has length 1163 [2022-07-13 11:51:15,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:51:15,472 INFO L495 AbstractCegarLoop]: Abstraction has 67667 states and 75609 transitions. [2022-07-13 11:51:15,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:15,472 INFO L276 IsEmpty]: Start isEmpty. Operand 67667 states and 75609 transitions. [2022-07-13 11:51:15,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1373 [2022-07-13 11:51:15,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:51:15,535 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:51:15,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 11:51:15,536 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:51:15,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:51:15,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1925080669, now seen corresponding path program 1 times [2022-07-13 11:51:15,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:51:15,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119921892] [2022-07-13 11:51:15,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:51:15,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:51:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:51:16,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 1252 proven. 0 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2022-07-13 11:51:16,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:51:16,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119921892] [2022-07-13 11:51:16,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119921892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:51:16,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:51:16,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:51:16,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331149104] [2022-07-13 11:51:16,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:51:16,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:51:16,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:51:16,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:51:16,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:51:16,256 INFO L87 Difference]: Start difference. First operand 67667 states and 75609 transitions. Second operand has 3 states, 3 states have (on average 358.0) internal successors, (1074), 3 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:18,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:51:18,899 INFO L93 Difference]: Finished difference Result 137885 states and 153897 transitions. [2022-07-13 11:51:18,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:51:18,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 358.0) internal successors, (1074), 3 states have internal predecessors, (1074), 0 states have call successors, (0), 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 1372 [2022-07-13 11:51:18,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:51:18,986 INFO L225 Difference]: With dead ends: 137885 [2022-07-13 11:51:18,987 INFO L226 Difference]: Without dead ends: 70939 [2022-07-13 11:51:19,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:51:19,019 INFO L413 NwaCegarLoop]: 1126 mSDtfsCounter, 662 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2945 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 3251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 2945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:51:19,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 1135 Invalid, 3251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 2945 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 11:51:19,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70939 states. [2022-07-13 11:51:19,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70939 to 69303. [2022-07-13 11:51:19,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69303 states, 69302 states have (on average 1.1038498167441055) internal successors, (76499), 69302 states have internal predecessors, (76499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:19,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69303 states to 69303 states and 76499 transitions. [2022-07-13 11:51:19,883 INFO L78 Accepts]: Start accepts. Automaton has 69303 states and 76499 transitions. Word has length 1372 [2022-07-13 11:51:19,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:51:19,883 INFO L495 AbstractCegarLoop]: Abstraction has 69303 states and 76499 transitions. [2022-07-13 11:51:19,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 358.0) internal successors, (1074), 3 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:19,884 INFO L276 IsEmpty]: Start isEmpty. Operand 69303 states and 76499 transitions. [2022-07-13 11:51:19,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1410 [2022-07-13 11:51:19,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:51:19,930 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:51:19,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 11:51:19,931 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:51:19,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:51:19,931 INFO L85 PathProgramCache]: Analyzing trace with hash 694298036, now seen corresponding path program 1 times [2022-07-13 11:51:19,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:51:19,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292451155] [2022-07-13 11:51:19,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:51:19,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:51:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:51:20,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 1181 proven. 89 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-13 11:51:20,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:51:20,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292451155] [2022-07-13 11:51:20,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292451155] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:51:20,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911780709] [2022-07-13 11:51:20,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:51:20,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:51:20,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:51:20,667 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:51:20,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 11:51:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:51:21,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 1716 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:51:21,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:51:22,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 905 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2022-07-13 11:51:22,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:51:22,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911780709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:51:22,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:51:22,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-07-13 11:51:22,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862513637] [2022-07-13 11:51:22,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:51:22,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:51:22,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:51:22,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:51:22,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:51:22,314 INFO L87 Difference]: Start difference. First operand 69303 states and 76499 transitions. Second operand has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:24,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:51:24,847 INFO L93 Difference]: Finished difference Result 137885 states and 152272 transitions. [2022-07-13 11:51:24,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:51:24,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 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 1409 [2022-07-13 11:51:24,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:51:24,918 INFO L225 Difference]: With dead ends: 137885 [2022-07-13 11:51:24,919 INFO L226 Difference]: Without dead ends: 69303 [2022-07-13 11:51:24,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1413 GetRequests, 1408 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:51:24,960 INFO L413 NwaCegarLoop]: 1123 mSDtfsCounter, 197 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2683 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 2683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:51:24,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1132 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 2683 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 11:51:25,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69303 states. [2022-07-13 11:51:25,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69303 to 69303. [2022-07-13 11:51:25,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69303 states, 69302 states have (on average 1.07421142246977) internal successors, (74445), 69302 states have internal predecessors, (74445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:25,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69303 states to 69303 states and 74445 transitions. [2022-07-13 11:51:25,917 INFO L78 Accepts]: Start accepts. Automaton has 69303 states and 74445 transitions. Word has length 1409 [2022-07-13 11:51:25,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:51:25,918 INFO L495 AbstractCegarLoop]: Abstraction has 69303 states and 74445 transitions. [2022-07-13 11:51:25,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:25,918 INFO L276 IsEmpty]: Start isEmpty. Operand 69303 states and 74445 transitions. [2022-07-13 11:51:26,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3110 [2022-07-13 11:51:26,123 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:51:26,124 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:51:26,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 11:51:26,335 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,SelfDestructingSolverStorable12 [2022-07-13 11:51:26,336 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:51:26,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:51:26,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1657504071, now seen corresponding path program 1 times [2022-07-13 11:51:26,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:51:26,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99647981] [2022-07-13 11:51:26,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:51:26,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:51:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:51:28,229 INFO L134 CoverageAnalysis]: Checked inductivity of 8988 backedges. 3861 proven. 89 refuted. 0 times theorem prover too weak. 5038 trivial. 0 not checked. [2022-07-13 11:51:28,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:51:28,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99647981] [2022-07-13 11:51:28,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99647981] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:51:28,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718739747] [2022-07-13 11:51:28,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:51:28,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:51:28,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:51:28,232 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:51:28,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 11:51:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:51:29,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 3647 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:51:29,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:51:29,488 INFO L134 CoverageAnalysis]: Checked inductivity of 8988 backedges. 5635 proven. 0 refuted. 0 times theorem prover too weak. 3353 trivial. 0 not checked. [2022-07-13 11:51:29,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:51:29,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718739747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:51:29,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:51:29,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-07-13 11:51:29,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967868722] [2022-07-13 11:51:29,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:51:29,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:51:29,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:51:29,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:51:29,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:51:29,495 INFO L87 Difference]: Start difference. First operand 69303 states and 74445 transitions. Second operand has 3 states, 3 states have (on average 444.3333333333333) internal successors, (1333), 3 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:32,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:51:32,321 INFO L93 Difference]: Finished difference Result 156699 states and 168711 transitions. [2022-07-13 11:51:32,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:51:32,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 444.3333333333333) internal successors, (1333), 3 states have internal predecessors, (1333), 0 states have call successors, (0), 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 3109 [2022-07-13 11:51:32,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:51:32,418 INFO L225 Difference]: With dead ends: 156699 [2022-07-13 11:51:32,418 INFO L226 Difference]: Without dead ends: 88117 [2022-07-13 11:51:32,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3113 GetRequests, 3108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:51:32,441 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 808 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2240 mSolverCounterSat, 1004 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 3244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1004 IncrementalHoareTripleChecker+Valid, 2240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:51:32,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 293 Invalid, 3244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1004 Valid, 2240 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 11:51:32,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88117 states. [2022-07-13 11:51:33,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88117 to 86481. [2022-07-13 11:51:33,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86481 states, 86480 states have (on average 1.0688251618871416) internal successors, (92432), 86480 states have internal predecessors, (92432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:33,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86481 states to 86481 states and 92432 transitions. [2022-07-13 11:51:33,690 INFO L78 Accepts]: Start accepts. Automaton has 86481 states and 92432 transitions. Word has length 3109 [2022-07-13 11:51:33,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:51:33,691 INFO L495 AbstractCegarLoop]: Abstraction has 86481 states and 92432 transitions. [2022-07-13 11:51:33,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 444.3333333333333) internal successors, (1333), 3 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:33,691 INFO L276 IsEmpty]: Start isEmpty. Operand 86481 states and 92432 transitions. [2022-07-13 11:51:34,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4493 [2022-07-13 11:51:34,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:51:34,023 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 11:51:34,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 11:51:34,223 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 [2022-07-13 11:51:34,223 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:51:34,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:51:34,224 INFO L85 PathProgramCache]: Analyzing trace with hash -470770932, now seen corresponding path program 1 times [2022-07-13 11:51:34,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:51:34,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857549161] [2022-07-13 11:51:34,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:51:34,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:51:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:51:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 18380 backedges. 5583 proven. 89 refuted. 0 times theorem prover too weak. 12708 trivial. 0 not checked. [2022-07-13 11:51:37,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:51:37,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857549161] [2022-07-13 11:51:37,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857549161] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:51:37,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062587201] [2022-07-13 11:51:37,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:51:37,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:51:37,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:51:37,179 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) [2022-07-13 11:51:37,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 11:51:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:51:38,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 5148 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:51:38,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:51:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 18380 backedges. 11053 proven. 0 refuted. 0 times theorem prover too weak. 7327 trivial. 0 not checked. [2022-07-13 11:51:39,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:51:39,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062587201] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:51:39,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:51:39,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-07-13 11:51:39,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270448303] [2022-07-13 11:51:39,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:51:39,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:51:39,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:51:39,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:51:39,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:51:39,259 INFO L87 Difference]: Start difference. First operand 86481 states and 92432 transitions. Second operand has 3 states, 3 states have (on average 577.6666666666666) internal successors, (1733), 3 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:42,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:51:42,169 INFO L93 Difference]: Finished difference Result 199235 states and 213271 transitions. [2022-07-13 11:51:42,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:51:42,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 577.6666666666666) internal successors, (1733), 3 states have internal predecessors, (1733), 0 states have call successors, (0), 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 4492 [2022-07-13 11:51:42,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:51:42,312 INFO L225 Difference]: With dead ends: 199235 [2022-07-13 11:51:42,312 INFO L226 Difference]: Without dead ends: 113475 [2022-07-13 11:51:42,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4496 GetRequests, 4491 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:51:42,368 INFO L413 NwaCegarLoop]: 1415 mSDtfsCounter, 194 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 3100 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 3400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 3100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:51:42,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1424 Invalid, 3400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 3100 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 11:51:42,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113475 states. [2022-07-13 11:51:43,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113475 to 105295. [2022-07-13 11:51:43,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105295 states, 105294 states have (on average 1.0687598533629648) internal successors, (112534), 105294 states have internal predecessors, (112534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:43,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105295 states to 105295 states and 112534 transitions. [2022-07-13 11:51:43,690 INFO L78 Accepts]: Start accepts. Automaton has 105295 states and 112534 transitions. Word has length 4492 [2022-07-13 11:51:43,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:51:43,691 INFO L495 AbstractCegarLoop]: Abstraction has 105295 states and 112534 transitions. [2022-07-13 11:51:43,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 577.6666666666666) internal successors, (1733), 3 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:51:43,692 INFO L276 IsEmpty]: Start isEmpty. Operand 105295 states and 112534 transitions. [2022-07-13 11:51:44,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5326 [2022-07-13 11:51:44,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:51:44,348 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:51:44,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 11:51:44,549 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 [2022-07-13 11:51:44,549 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:51:44,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:51:44,550 INFO L85 PathProgramCache]: Analyzing trace with hash 271011932, now seen corresponding path program 1 times [2022-07-13 11:51:44,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:51:44,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836401907] [2022-07-13 11:51:44,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:51:44,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:51:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:51:48,477 INFO L134 CoverageAnalysis]: Checked inductivity of 26463 backedges. 6718 proven. 89 refuted. 0 times theorem prover too weak. 19656 trivial. 0 not checked. [2022-07-13 11:51:48,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:51:48,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836401907] [2022-07-13 11:51:48,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836401907] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:51:48,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394071597] [2022-07-13 11:51:48,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:51:48,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:51:48,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:51:48,481 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:51:48,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 11:51:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:51:49,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 6073 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 11:51:49,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:52:27,389 INFO L134 CoverageAnalysis]: Checked inductivity of 26463 backedges. 20481 proven. 120 refuted. 0 times theorem prover too weak. 5862 trivial. 0 not checked. [2022-07-13 11:52:27,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:53:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 26463 backedges. 20481 proven. 120 refuted. 0 times theorem prover too weak. 5862 trivial. 0 not checked. [2022-07-13 11:53:09,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394071597] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:53:09,811 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 11:53:09,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2022-07-13 11:53:09,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642660659] [2022-07-13 11:53:09,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 11:53:09,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 11:53:09,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:53:09,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 11:53:09,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-07-13 11:53:09,821 INFO L87 Difference]: Start difference. First operand 105295 states and 112534 transitions. Second operand has 12 states, 12 states have (on average 273.5833333333333) internal successors, (3283), 11 states have internal predecessors, (3283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:53:23,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:53:23,834 INFO L93 Difference]: Finished difference Result 228987 states and 244586 transitions. [2022-07-13 11:53:23,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 11:53:23,836 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 273.5833333333333) internal successors, (3283), 11 states have internal predecessors, (3283), 0 states have call successors, (0), 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 5325 [2022-07-13 11:53:23,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:53:23,989 INFO L225 Difference]: With dead ends: 228987 [2022-07-13 11:53:23,989 INFO L226 Difference]: Without dead ends: 124413 [2022-07-13 11:53:24,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10669 GetRequests, 10643 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2022-07-13 11:53:24,062 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 7052 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 30243 mSolverCounterSat, 2093 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7052 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 32336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2093 IncrementalHoareTripleChecker+Valid, 30243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:53:24,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7052 Valid, 336 Invalid, 32336 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2093 Valid, 30243 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2022-07-13 11:53:24,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124413 states. [2022-07-13 11:53:25,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124413 to 99569. [2022-07-13 11:53:25,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99569 states, 99568 states have (on average 1.0501566768439659) internal successors, (104562), 99568 states have internal predecessors, (104562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:53:25,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99569 states to 99569 states and 104562 transitions. [2022-07-13 11:53:25,393 INFO L78 Accepts]: Start accepts. Automaton has 99569 states and 104562 transitions. Word has length 5325 [2022-07-13 11:53:25,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:53:25,393 INFO L495 AbstractCegarLoop]: Abstraction has 99569 states and 104562 transitions. [2022-07-13 11:53:25,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 273.5833333333333) internal successors, (3283), 11 states have internal predecessors, (3283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:53:25,394 INFO L276 IsEmpty]: Start isEmpty. Operand 99569 states and 104562 transitions. [2022-07-13 11:53:25,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5840 [2022-07-13 11:53:25,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:53:25,696 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:53:25,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 11:53:25,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-13 11:53:25,897 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:53:25,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:53:25,899 INFO L85 PathProgramCache]: Analyzing trace with hash -717937319, now seen corresponding path program 1 times [2022-07-13 11:53:25,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:53:25,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513778013] [2022-07-13 11:53:25,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:53:25,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:53:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat