./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem17_label07.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 4d9630e6a4c9245b15f4f309d83464d257ca20ee86c7917689a5d5471eca79bd --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 12:51:33,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 12:51:33,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 12:51:33,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 12:51:33,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 12:51:33,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 12:51:33,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 12:51:33,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 12:51:33,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 12:51:33,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 12:51:33,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 12:51:33,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 12:51:33,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 12:51:33,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 12:51:33,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 12:51:33,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 12:51:33,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 12:51:33,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 12:51:33,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 12:51:33,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 12:51:33,276 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 12:51:33,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 12:51:33,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 12:51:33,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 12:51:33,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 12:51:33,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 12:51:33,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 12:51:33,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 12:51:33,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 12:51:33,283 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 12:51:33,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 12:51:33,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 12:51:33,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 12:51:33,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 12:51:33,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 12:51:33,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 12:51:33,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 12:51:33,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 12:51:33,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 12:51:33,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 12:51:33,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 12:51:33,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 12:51:33,289 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 12:51:33,305 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 12:51:33,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 12:51:33,306 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 12:51:33,306 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 12:51:33,307 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 12:51:33,308 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 12:51:33,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 12:51:33,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 12:51:33,308 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 12:51:33,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 12:51:33,309 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 12:51:33,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 12:51:33,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 12:51:33,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 12:51:33,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 12:51:33,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 12:51:33,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 12:51:33,310 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 12:51:33,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 12:51:33,312 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 12:51:33,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 12:51:33,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 12:51:33,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 12:51:33,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 12:51:33,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 12:51:33,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 12:51:33,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 12:51:33,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 12:51:33,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 12:51:33,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 12:51:33,314 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 12:51:33,314 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 12:51:33,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 12:51:33,314 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d9630e6a4c9245b15f4f309d83464d257ca20ee86c7917689a5d5471eca79bd [2022-07-22 12:51:33,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 12:51:33,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 12:51:33,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 12:51:33,525 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 12:51:33,526 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 12:51:33,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label07.c [2022-07-22 12:51:33,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53464121a/5860747cf4b7452a900994d21e524867/FLAGb73e2ca26 [2022-07-22 12:51:34,097 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 12:51:34,098 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label07.c [2022-07-22 12:51:34,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53464121a/5860747cf4b7452a900994d21e524867/FLAGb73e2ca26 [2022-07-22 12:51:34,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53464121a/5860747cf4b7452a900994d21e524867 [2022-07-22 12:51:34,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 12:51:34,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 12:51:34,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 12:51:34,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 12:51:34,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 12:51:34,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:51:34" (1/1) ... [2022-07-22 12:51:34,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@248c44fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:34, skipping insertion in model container [2022-07-22 12:51:34,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:51:34" (1/1) ... [2022-07-22 12:51:34,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 12:51:34,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 12:51:34,858 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/Problem17_label07.c[4239,4252] [2022-07-22 12:51:35,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:51:35,309 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 12:51:35,333 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/Problem17_label07.c[4239,4252] [2022-07-22 12:51:35,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:51:35,515 INFO L208 MainTranslator]: Completed translation [2022-07-22 12:51:35,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:35 WrapperNode [2022-07-22 12:51:35,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 12:51:35,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 12:51:35,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 12:51:35,517 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 12:51:35,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:35" (1/1) ... [2022-07-22 12:51:35,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:35" (1/1) ... [2022-07-22 12:51:35,765 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-07-22 12:51:35,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 12:51:35,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 12:51:35,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 12:51:35,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 12:51:35,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:35" (1/1) ... [2022-07-22 12:51:35,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:35" (1/1) ... [2022-07-22 12:51:35,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:35" (1/1) ... [2022-07-22 12:51:35,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:35" (1/1) ... [2022-07-22 12:51:36,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:35" (1/1) ... [2022-07-22 12:51:36,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:35" (1/1) ... [2022-07-22 12:51:36,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:35" (1/1) ... [2022-07-22 12:51:36,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 12:51:36,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 12:51:36,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 12:51:36,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 12:51:36,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:35" (1/1) ... [2022-07-22 12:51:36,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 12:51:36,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:51:36,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 12:51:36,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 12:51:36,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 12:51:36,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 12:51:36,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 12:51:36,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 12:51:36,367 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 12:51:36,368 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 12:51:38,981 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 12:51:39,008 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 12:51:39,008 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 12:51:39,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:51:39 BoogieIcfgContainer [2022-07-22 12:51:39,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 12:51:39,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 12:51:39,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 12:51:39,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 12:51:39,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 12:51:34" (1/3) ... [2022-07-22 12:51:39,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d85bf9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:51:39, skipping insertion in model container [2022-07-22 12:51:39,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:35" (2/3) ... [2022-07-22 12:51:39,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d85bf9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:51:39, skipping insertion in model container [2022-07-22 12:51:39,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:51:39" (3/3) ... [2022-07-22 12:51:39,018 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label07.c [2022-07-22 12:51:39,030 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 12:51:39,030 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 12:51:39,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 12:51:39,082 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@7cd8f2fe, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@40fa0719 [2022-07-22 12:51:39,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 12:51:39,088 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:39,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-22 12:51:39,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:51:39,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:51:39,096 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:51:39,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:51:39,100 INFO L85 PathProgramCache]: Analyzing trace with hash -438767135, now seen corresponding path program 1 times [2022-07-22 12:51:39,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:51:39,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63431622] [2022-07-22 12:51:39,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:51:39,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:51:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:51:39,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:51:39,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:51:39,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63431622] [2022-07-22 12:51:39,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63431622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:51:39,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:51:39,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:51:39,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938156560] [2022-07-22 12:51:39,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:51:39,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:51:39,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:51:39,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:51:39,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:51:39,293 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:41,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:51:41,649 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2022-07-22 12:51:41,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:51:41,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-22 12:51:41,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:51:41,668 INFO L225 Difference]: With dead ends: 1642 [2022-07-22 12:51:41,668 INFO L226 Difference]: Without dead ends: 975 [2022-07-22 12:51:41,673 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 [2022-07-22 12:51:41,675 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 463 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:51:41,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 12:51:41,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-07-22 12:51:41,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2022-07-22 12:51:41,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:41,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2022-07-22 12:51:41,744 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 27 [2022-07-22 12:51:41,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:51:41,745 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2022-07-22 12:51:41,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:41,745 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2022-07-22 12:51:41,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-22 12:51:41,747 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:51:41,748 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:51:41,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 12:51:41,748 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:51:41,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:51:41,749 INFO L85 PathProgramCache]: Analyzing trace with hash -302238124, now seen corresponding path program 1 times [2022-07-22 12:51:41,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:51:41,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893545669] [2022-07-22 12:51:41,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:51:41,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:51:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:51:41,854 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:51:41,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:51:41,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893545669] [2022-07-22 12:51:41,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893545669] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:51:41,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:51:41,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:51:41,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144692513] [2022-07-22 12:51:41,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:51:41,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:51:41,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:51:41,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:51:41,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:51:41,865 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:44,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:51:44,082 INFO L93 Difference]: Finished difference Result 2814 states and 4242 transitions. [2022-07-22 12:51:44,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:51:44,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-07-22 12:51:44,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:51:44,090 INFO L225 Difference]: With dead ends: 2814 [2022-07-22 12:51:44,090 INFO L226 Difference]: Without dead ends: 1844 [2022-07-22 12:51:44,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:51:44,093 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 464 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 12:51:44,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 12:51:44,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-07-22 12:51:44,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2022-07-22 12:51:44,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3601303639326452) internal successors, (2504), 1841 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:44,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2504 transitions. [2022-07-22 12:51:44,132 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2504 transitions. Word has length 97 [2022-07-22 12:51:44,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:51:44,133 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2504 transitions. [2022-07-22 12:51:44,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:44,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2504 transitions. [2022-07-22 12:51:44,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-22 12:51:44,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:51:44,135 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:51:44,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 12:51:44,136 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:51:44,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:51:44,137 INFO L85 PathProgramCache]: Analyzing trace with hash 810430801, now seen corresponding path program 1 times [2022-07-22 12:51:44,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:51:44,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047351852] [2022-07-22 12:51:44,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:51:44,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:51:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:51:44,259 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:51:44,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:51:44,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047351852] [2022-07-22 12:51:44,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047351852] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:51:44,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:51:44,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:51:44,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233609935] [2022-07-22 12:51:44,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:51:44,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:51:44,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:51:44,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:51:44,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:51:44,262 INFO L87 Difference]: Start difference. First operand 1842 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:46,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:51:46,149 INFO L93 Difference]: Finished difference Result 5395 states and 7326 transitions. [2022-07-22 12:51:46,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:51:46,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2022-07-22 12:51:46,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:51:46,158 INFO L225 Difference]: With dead ends: 5395 [2022-07-22 12:51:46,159 INFO L226 Difference]: Without dead ends: 2701 [2022-07-22 12:51:46,161 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 [2022-07-22 12:51:46,166 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 12:51:46,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 12:51:46,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2022-07-22 12:51:46,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2022-07-22 12:51:46,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.191851851851852) internal successors, (3218), 2700 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:46,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3218 transitions. [2022-07-22 12:51:46,242 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3218 transitions. Word has length 119 [2022-07-22 12:51:46,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:51:46,242 INFO L495 AbstractCegarLoop]: Abstraction has 2701 states and 3218 transitions. [2022-07-22 12:51:46,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:46,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3218 transitions. [2022-07-22 12:51:46,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 12:51:46,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:51:46,247 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:51:46,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 12:51:46,247 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:51:46,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:51:46,248 INFO L85 PathProgramCache]: Analyzing trace with hash -327978434, now seen corresponding path program 1 times [2022-07-22 12:51:46,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:51:46,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508147077] [2022-07-22 12:51:46,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:51:46,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:51:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:51:46,341 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:51:46,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:51:46,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508147077] [2022-07-22 12:51:46,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508147077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:51:46,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:51:46,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:51:46,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73049139] [2022-07-22 12:51:46,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:51:46,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:51:46,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:51:46,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:51:46,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:51:46,343 INFO L87 Difference]: Start difference. First operand 2701 states and 3218 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:47,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:51:47,859 INFO L93 Difference]: Finished difference Result 7108 states and 8598 transitions. [2022-07-22 12:51:47,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:51:47,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2022-07-22 12:51:47,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:51:47,871 INFO L225 Difference]: With dead ends: 7108 [2022-07-22 12:51:47,872 INFO L226 Difference]: Without dead ends: 4409 [2022-07-22 12:51:47,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:51:47,877 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:51:47,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 12:51:47,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2022-07-22 12:51:47,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2022-07-22 12:51:47,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 1.1705989110707804) internal successors, (5160), 4408 states have internal predecessors, (5160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:47,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 5160 transitions. [2022-07-22 12:51:47,938 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 5160 transitions. Word has length 179 [2022-07-22 12:51:47,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:51:47,938 INFO L495 AbstractCegarLoop]: Abstraction has 4409 states and 5160 transitions. [2022-07-22 12:51:47,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:47,939 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 5160 transitions. [2022-07-22 12:51:47,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-22 12:51:47,940 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:51:47,940 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:51:47,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 12:51:47,940 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:51:47,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:51:47,941 INFO L85 PathProgramCache]: Analyzing trace with hash 459537123, now seen corresponding path program 1 times [2022-07-22 12:51:47,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:51:47,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958705790] [2022-07-22 12:51:47,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:51:47,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:51:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:51:48,102 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-22 12:51:48,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:51:48,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958705790] [2022-07-22 12:51:48,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958705790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:51:48,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:51:48,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:51:48,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713190082] [2022-07-22 12:51:48,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:51:48,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:51:48,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:51:48,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:51:48,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:51:48,105 INFO L87 Difference]: Start difference. First operand 4409 states and 5160 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:49,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:51:49,688 INFO L93 Difference]: Finished difference Result 10936 states and 12970 transitions. [2022-07-22 12:51:49,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:51:49,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-07-22 12:51:49,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:51:49,708 INFO L225 Difference]: With dead ends: 10936 [2022-07-22 12:51:49,708 INFO L226 Difference]: Without dead ends: 6528 [2022-07-22 12:51:49,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:51:49,714 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 424 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:51:49,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 12:51:49,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2022-07-22 12:51:49,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4382. [2022-07-22 12:51:49,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 1.1684546907098836) internal successors, (5119), 4381 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:49,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5119 transitions. [2022-07-22 12:51:49,781 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5119 transitions. Word has length 181 [2022-07-22 12:51:49,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:51:49,782 INFO L495 AbstractCegarLoop]: Abstraction has 4382 states and 5119 transitions. [2022-07-22 12:51:49,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:49,782 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5119 transitions. [2022-07-22 12:51:49,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-07-22 12:51:49,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:51:49,784 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:51:49,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 12:51:49,785 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:51:49,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:51:49,785 INFO L85 PathProgramCache]: Analyzing trace with hash 2033064541, now seen corresponding path program 1 times [2022-07-22 12:51:49,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:51:49,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942367572] [2022-07-22 12:51:49,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:51:49,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:51:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:51:49,897 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-22 12:51:49,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:51:49,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942367572] [2022-07-22 12:51:49,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942367572] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:51:49,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:51:49,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:51:49,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743899894] [2022-07-22 12:51:49,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:51:49,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:51:49,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:51:49,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:51:49,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:51:49,900 INFO L87 Difference]: Start difference. First operand 4382 states and 5119 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:51,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:51:51,429 INFO L93 Difference]: Finished difference Result 10045 states and 11706 transitions. [2022-07-22 12:51:51,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:51:51,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 247 [2022-07-22 12:51:51,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:51:51,446 INFO L225 Difference]: With dead ends: 10045 [2022-07-22 12:51:51,446 INFO L226 Difference]: Without dead ends: 5665 [2022-07-22 12:51:51,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:51:51,453 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 409 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:51:51,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 894 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 12:51:51,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5665 states. [2022-07-22 12:51:51,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5665 to 5234. [2022-07-22 12:51:51,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 5233 states have (on average 1.1587999235620103) internal successors, (6064), 5233 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:51,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 6064 transitions. [2022-07-22 12:51:51,527 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 6064 transitions. Word has length 247 [2022-07-22 12:51:51,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:51:51,527 INFO L495 AbstractCegarLoop]: Abstraction has 5234 states and 6064 transitions. [2022-07-22 12:51:51,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:51,527 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 6064 transitions. [2022-07-22 12:51:51,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-07-22 12:51:51,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:51:51,530 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:51:51,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 12:51:51,530 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:51:51,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:51:51,531 INFO L85 PathProgramCache]: Analyzing trace with hash 670756641, now seen corresponding path program 1 times [2022-07-22 12:51:51,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:51:51,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509924675] [2022-07-22 12:51:51,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:51:51,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:51:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:51:51,654 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-22 12:51:51,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:51:51,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509924675] [2022-07-22 12:51:51,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509924675] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:51:51,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:51:51,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:51:51,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731194652] [2022-07-22 12:51:51,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:51:51,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:51:51,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:51:51,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:51:51,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:51:51,656 INFO L87 Difference]: Start difference. First operand 5234 states and 6064 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:53,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:51:53,362 INFO L93 Difference]: Finished difference Result 13051 states and 15223 transitions. [2022-07-22 12:51:53,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:51:53,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 259 [2022-07-22 12:51:53,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:51:53,391 INFO L225 Difference]: With dead ends: 13051 [2022-07-22 12:51:53,391 INFO L226 Difference]: Without dead ends: 7391 [2022-07-22 12:51:53,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:51:53,398 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 495 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 12:51:53,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 629 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 12:51:53,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7391 states. [2022-07-22 12:51:53,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7391 to 6959. [2022-07-22 12:51:53,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6959 states, 6958 states have (on average 1.1636964645012935) internal successors, (8097), 6958 states have internal predecessors, (8097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:53,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6959 states to 6959 states and 8097 transitions. [2022-07-22 12:51:53,493 INFO L78 Accepts]: Start accepts. Automaton has 6959 states and 8097 transitions. Word has length 259 [2022-07-22 12:51:53,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:51:53,494 INFO L495 AbstractCegarLoop]: Abstraction has 6959 states and 8097 transitions. [2022-07-22 12:51:53,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:53,494 INFO L276 IsEmpty]: Start isEmpty. Operand 6959 states and 8097 transitions. [2022-07-22 12:51:53,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-07-22 12:51:53,497 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:51:53,497 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:51:53,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 12:51:53,497 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:51:53,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:51:53,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1874496226, now seen corresponding path program 1 times [2022-07-22 12:51:53,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:51:53,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359889497] [2022-07-22 12:51:53,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:51:53,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:51:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:51:53,600 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-22 12:51:53,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:51:53,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359889497] [2022-07-22 12:51:53,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359889497] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:51:53,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:51:53,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:51:53,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972081253] [2022-07-22 12:51:53,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:51:53,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:51:53,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:51:53,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:51:53,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:51:53,603 INFO L87 Difference]: Start difference. First operand 6959 states and 8097 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:55,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:51:55,089 INFO L93 Difference]: Finished difference Result 17316 states and 20393 transitions. [2022-07-22 12:51:55,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:51:55,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 264 [2022-07-22 12:51:55,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:51:55,105 INFO L225 Difference]: With dead ends: 17316 [2022-07-22 12:51:55,105 INFO L226 Difference]: Without dead ends: 10359 [2022-07-22 12:51:55,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:51:55,111 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 379 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 12:51:55,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 841 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 12:51:55,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10359 states. [2022-07-22 12:51:55,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10359 to 9509. [2022-07-22 12:51:55,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9509 states, 9508 states have (on average 1.141459823306689) internal successors, (10853), 9508 states have internal predecessors, (10853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:55,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9509 states to 9509 states and 10853 transitions. [2022-07-22 12:51:55,200 INFO L78 Accepts]: Start accepts. Automaton has 9509 states and 10853 transitions. Word has length 264 [2022-07-22 12:51:55,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:51:55,200 INFO L495 AbstractCegarLoop]: Abstraction has 9509 states and 10853 transitions. [2022-07-22 12:51:55,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:55,201 INFO L276 IsEmpty]: Start isEmpty. Operand 9509 states and 10853 transitions. [2022-07-22 12:51:55,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-07-22 12:51:55,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:51:55,203 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 12:51:55,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 12:51:55,205 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:51:55,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:51:55,205 INFO L85 PathProgramCache]: Analyzing trace with hash -168042548, now seen corresponding path program 1 times [2022-07-22 12:51:55,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:51:55,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649520171] [2022-07-22 12:51:55,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:51:55,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:51:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:51:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-22 12:51:55,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:51:55,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649520171] [2022-07-22 12:51:55,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649520171] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:51:55,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:51:55,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:51:55,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541879747] [2022-07-22 12:51:55,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:51:55,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:51:55,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:51:55,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:51:55,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:51:55,291 INFO L87 Difference]: Start difference. First operand 9509 states and 10853 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:56,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:51:56,866 INFO L93 Difference]: Finished difference Result 22432 states and 25678 transitions. [2022-07-22 12:51:56,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:51:56,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 282 [2022-07-22 12:51:56,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:51:56,881 INFO L225 Difference]: With dead ends: 22432 [2022-07-22 12:51:56,881 INFO L226 Difference]: Without dead ends: 12493 [2022-07-22 12:51:56,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:51:56,889 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 444 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:51:56,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 294 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 12:51:56,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12493 states. [2022-07-22 12:51:56,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12493 to 11637. [2022-07-22 12:51:56,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11637 states, 11636 states have (on average 1.1473014781711928) internal successors, (13350), 11636 states have internal predecessors, (13350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:56,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11637 states to 11637 states and 13350 transitions. [2022-07-22 12:51:56,983 INFO L78 Accepts]: Start accepts. Automaton has 11637 states and 13350 transitions. Word has length 282 [2022-07-22 12:51:56,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:51:56,984 INFO L495 AbstractCegarLoop]: Abstraction has 11637 states and 13350 transitions. [2022-07-22 12:51:56,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:51:56,984 INFO L276 IsEmpty]: Start isEmpty. Operand 11637 states and 13350 transitions. [2022-07-22 12:51:56,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-07-22 12:51:56,987 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:51:56,987 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 12:51:56,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 12:51:56,987 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:51:56,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:51:56,988 INFO L85 PathProgramCache]: Analyzing trace with hash 278678807, now seen corresponding path program 1 times [2022-07-22 12:51:56,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:51:56,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399678022] [2022-07-22 12:51:56,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:51:56,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:51:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:51:57,106 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 227 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:51:57,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:51:57,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399678022] [2022-07-22 12:51:57,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399678022] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:51:57,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860889150] [2022-07-22 12:51:57,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:51:57,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:51:57,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:51:57,109 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) [2022-07-22 12:51:57,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 12:51:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:51:57,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 12:51:57,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:51:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 192 proven. 82 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 12:51:57,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 12:51:58,380 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 192 proven. 82 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 12:51:58,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860889150] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 12:51:58,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 12:51:58,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2022-07-22 12:51:58,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906990603] [2022-07-22 12:51:58,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 12:51:58,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 12:51:58,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:51:58,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 12:51:58,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-22 12:51:58,382 INFO L87 Difference]: Start difference. First operand 11637 states and 13350 transitions. Second operand has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:10,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:52:10,768 INFO L93 Difference]: Finished difference Result 65929 states and 75333 transitions. [2022-07-22 12:52:10,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 12:52:10,768 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 0 states have call successors, (0), 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 287 [2022-07-22 12:52:10,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:52:10,847 INFO L225 Difference]: With dead ends: 65929 [2022-07-22 12:52:10,847 INFO L226 Difference]: Without dead ends: 50460 [2022-07-22 12:52:10,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=353, Unknown=0, NotChecked=0, Total=506 [2022-07-22 12:52:10,859 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 11367 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 13352 mSolverCounterSat, 2621 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11367 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 15973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2621 IncrementalHoareTripleChecker+Valid, 13352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-07-22 12:52:10,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11367 Valid, 541 Invalid, 15973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2621 Valid, 13352 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2022-07-22 12:52:10,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50460 states. [2022-07-22 12:52:11,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50460 to 41484. [2022-07-22 12:52:11,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41484 states, 41483 states have (on average 1.140611816888846) internal successors, (47316), 41483 states have internal predecessors, (47316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:11,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41484 states to 41484 states and 47316 transitions. [2022-07-22 12:52:11,300 INFO L78 Accepts]: Start accepts. Automaton has 41484 states and 47316 transitions. Word has length 287 [2022-07-22 12:52:11,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:52:11,301 INFO L495 AbstractCegarLoop]: Abstraction has 41484 states and 47316 transitions. [2022-07-22 12:52:11,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:11,301 INFO L276 IsEmpty]: Start isEmpty. Operand 41484 states and 47316 transitions. [2022-07-22 12:52:11,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-07-22 12:52:11,304 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:52:11,304 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:52:11,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 12:52:11,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 12:52:11,520 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:52:11,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:52:11,520 INFO L85 PathProgramCache]: Analyzing trace with hash 479246291, now seen corresponding path program 1 times [2022-07-22 12:52:11,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:52:11,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094723121] [2022-07-22 12:52:11,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:52:11,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:52:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:52:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-22 12:52:11,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:52:11,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094723121] [2022-07-22 12:52:11,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094723121] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:52:11,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:52:11,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:52:11,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443702401] [2022-07-22 12:52:11,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:52:11,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:52:11,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:52:11,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:52:11,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:52:11,638 INFO L87 Difference]: Start difference. First operand 41484 states and 47316 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:12,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:52:12,991 INFO L93 Difference]: Finished difference Result 80833 states and 92270 transitions. [2022-07-22 12:52:12,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:52:12,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 314 [2022-07-22 12:52:12,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:52:13,045 INFO L225 Difference]: With dead ends: 80833 [2022-07-22 12:52:13,045 INFO L226 Difference]: Without dead ends: 39776 [2022-07-22 12:52:13,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:52:13,072 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 477 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 12:52:13,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 736 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 12:52:13,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39776 states. [2022-07-22 12:52:13,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39776 to 39349. [2022-07-22 12:52:13,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39349 states, 39348 states have (on average 1.1050371048083765) internal successors, (43481), 39348 states have internal predecessors, (43481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:13,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39349 states to 39349 states and 43481 transitions. [2022-07-22 12:52:13,596 INFO L78 Accepts]: Start accepts. Automaton has 39349 states and 43481 transitions. Word has length 314 [2022-07-22 12:52:13,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:52:13,596 INFO L495 AbstractCegarLoop]: Abstraction has 39349 states and 43481 transitions. [2022-07-22 12:52:13,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:13,597 INFO L276 IsEmpty]: Start isEmpty. Operand 39349 states and 43481 transitions. [2022-07-22 12:52:13,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-07-22 12:52:13,602 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:52:13,602 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 12:52:13,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 12:52:13,602 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:52:13,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:52:13,603 INFO L85 PathProgramCache]: Analyzing trace with hash 739392052, now seen corresponding path program 1 times [2022-07-22 12:52:13,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:52:13,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694936378] [2022-07-22 12:52:13,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:52:13,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:52:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:52:13,737 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-07-22 12:52:13,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:52:13,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694936378] [2022-07-22 12:52:13,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694936378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:52:13,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:52:13,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:52:13,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634755920] [2022-07-22 12:52:13,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:52:13,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:52:13,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:52:13,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:52:13,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:52:13,739 INFO L87 Difference]: Start difference. First operand 39349 states and 43481 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:15,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:52:15,575 INFO L93 Difference]: Finished difference Result 86352 states and 95641 transitions. [2022-07-22 12:52:15,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:52:15,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 374 [2022-07-22 12:52:15,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:52:15,638 INFO L225 Difference]: With dead ends: 86352 [2022-07-22 12:52:15,638 INFO L226 Difference]: Without dead ends: 47001 [2022-07-22 12:52:15,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:52:15,664 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 480 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:52:15,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 704 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 12:52:15,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47001 states. [2022-07-22 12:52:16,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47001 to 44023. [2022-07-22 12:52:16,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44023 states, 44022 states have (on average 1.0974058425332789) internal successors, (48310), 44022 states have internal predecessors, (48310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:16,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44023 states to 44023 states and 48310 transitions. [2022-07-22 12:52:16,228 INFO L78 Accepts]: Start accepts. Automaton has 44023 states and 48310 transitions. Word has length 374 [2022-07-22 12:52:16,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:52:16,229 INFO L495 AbstractCegarLoop]: Abstraction has 44023 states and 48310 transitions. [2022-07-22 12:52:16,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:16,229 INFO L276 IsEmpty]: Start isEmpty. Operand 44023 states and 48310 transitions. [2022-07-22 12:52:16,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2022-07-22 12:52:16,234 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:52:16,235 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 12:52:16,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 12:52:16,235 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:52:16,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:52:16,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1698724601, now seen corresponding path program 1 times [2022-07-22 12:52:16,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:52:16,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182763923] [2022-07-22 12:52:16,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:52:16,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:52:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:52:16,350 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-22 12:52:16,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:52:16,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182763923] [2022-07-22 12:52:16,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182763923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:52:16,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:52:16,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:52:16,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327262137] [2022-07-22 12:52:16,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:52:16,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:52:16,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:52:16,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:52:16,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:52:16,352 INFO L87 Difference]: Start difference. First operand 44023 states and 48310 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:18,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:52:18,199 INFO L93 Difference]: Finished difference Result 109336 states and 120017 transitions. [2022-07-22 12:52:18,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:52:18,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 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 387 [2022-07-22 12:52:18,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:52:18,272 INFO L225 Difference]: With dead ends: 109336 [2022-07-22 12:52:18,272 INFO L226 Difference]: Without dead ends: 65305 [2022-07-22 12:52:18,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:52:18,292 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 420 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:52:18,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 724 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 12:52:18,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65305 states. [2022-07-22 12:52:18,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65305 to 59741. [2022-07-22 12:52:18,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59741 states, 59740 states have (on average 1.087847338466689) internal successors, (64988), 59740 states have internal predecessors, (64988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:19,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59741 states to 59741 states and 64988 transitions. [2022-07-22 12:52:19,022 INFO L78 Accepts]: Start accepts. Automaton has 59741 states and 64988 transitions. Word has length 387 [2022-07-22 12:52:19,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:52:19,023 INFO L495 AbstractCegarLoop]: Abstraction has 59741 states and 64988 transitions. [2022-07-22 12:52:19,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:19,023 INFO L276 IsEmpty]: Start isEmpty. Operand 59741 states and 64988 transitions. [2022-07-22 12:52:19,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2022-07-22 12:52:19,031 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:52:19,031 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:52:19,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 12:52:19,032 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:52:19,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:52:19,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1783399076, now seen corresponding path program 1 times [2022-07-22 12:52:19,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:52:19,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101657199] [2022-07-22 12:52:19,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:52:19,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:52:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:52:19,318 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-07-22 12:52:19,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:52:19,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101657199] [2022-07-22 12:52:19,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101657199] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:52:19,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:52:19,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:52:19,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524672107] [2022-07-22 12:52:19,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:52:19,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:52:19,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:52:19,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:52:19,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:52:19,321 INFO L87 Difference]: Start difference. First operand 59741 states and 64988 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:20,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:52:20,298 INFO L93 Difference]: Finished difference Result 116916 states and 127058 transitions. [2022-07-22 12:52:20,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:52:20,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2022-07-22 12:52:20,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:52:20,366 INFO L225 Difference]: With dead ends: 116916 [2022-07-22 12:52:20,366 INFO L226 Difference]: Without dead ends: 57601 [2022-07-22 12:52:20,554 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 [2022-07-22 12:52:20,555 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 633 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 12:52:20,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 102 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 12:52:20,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57601 states. [2022-07-22 12:52:21,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57601 to 57167. [2022-07-22 12:52:21,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57167 states, 57166 states have (on average 1.08498058286394) internal successors, (62024), 57166 states have internal predecessors, (62024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:21,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57167 states to 57167 states and 62024 transitions. [2022-07-22 12:52:21,155 INFO L78 Accepts]: Start accepts. Automaton has 57167 states and 62024 transitions. Word has length 433 [2022-07-22 12:52:21,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:52:21,155 INFO L495 AbstractCegarLoop]: Abstraction has 57167 states and 62024 transitions. [2022-07-22 12:52:21,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:21,156 INFO L276 IsEmpty]: Start isEmpty. Operand 57167 states and 62024 transitions. [2022-07-22 12:52:21,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-07-22 12:52:21,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:52:21,165 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 12:52:21,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 12:52:21,165 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:52:21,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:52:21,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1264109726, now seen corresponding path program 1 times [2022-07-22 12:52:21,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:52:21,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142445434] [2022-07-22 12:52:21,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:52:21,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:52:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:52:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2022-07-22 12:52:21,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:52:21,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142445434] [2022-07-22 12:52:21,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142445434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:52:21,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:52:21,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:52:21,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155428022] [2022-07-22 12:52:21,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:52:21,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:52:21,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:52:21,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:52:21,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:52:21,333 INFO L87 Difference]: Start difference. First operand 57167 states and 62024 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:23,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:52:23,113 INFO L93 Difference]: Finished difference Result 123713 states and 134460 transitions. [2022-07-22 12:52:23,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:52:23,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 476 [2022-07-22 12:52:23,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:52:23,184 INFO L225 Difference]: With dead ends: 123713 [2022-07-22 12:52:23,185 INFO L226 Difference]: Without dead ends: 66547 [2022-07-22 12:52:23,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:52:23,221 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 486 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 12:52:23,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 257 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 12:52:23,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66547 states. [2022-07-22 12:52:23,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66547 to 58023. [2022-07-22 12:52:23,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58023 states, 58022 states have (on average 1.0852262934748889) internal successors, (62967), 58022 states have internal predecessors, (62967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:23,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58023 states to 58023 states and 62967 transitions. [2022-07-22 12:52:23,958 INFO L78 Accepts]: Start accepts. Automaton has 58023 states and 62967 transitions. Word has length 476 [2022-07-22 12:52:23,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:52:23,959 INFO L495 AbstractCegarLoop]: Abstraction has 58023 states and 62967 transitions. [2022-07-22 12:52:23,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:23,959 INFO L276 IsEmpty]: Start isEmpty. Operand 58023 states and 62967 transitions. [2022-07-22 12:52:23,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2022-07-22 12:52:23,967 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:52:23,967 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 12:52:23,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 12:52:23,968 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:52:23,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:52:23,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1955114381, now seen corresponding path program 1 times [2022-07-22 12:52:23,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:52:23,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326018924] [2022-07-22 12:52:23,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:52:23,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:52:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:52:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 370 proven. 82 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-22 12:52:24,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:52:24,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326018924] [2022-07-22 12:52:24,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326018924] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:52:24,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629247225] [2022-07-22 12:52:24,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:52:24,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:52:24,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:52:24,101 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) [2022-07-22 12:52:24,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 12:52:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:52:24,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 12:52:24,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:52:24,763 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 370 proven. 82 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-22 12:52:24,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 12:52:25,065 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 452 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-22 12:52:25,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629247225] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 12:52:25,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 12:52:25,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-07-22 12:52:25,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482945761] [2022-07-22 12:52:25,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:52:25,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:52:25,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:52:25,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:52:25,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-22 12:52:25,068 INFO L87 Difference]: Start difference. First operand 58023 states and 62967 transitions. Second operand has 4 states, 4 states have (on average 96.75) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:27,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:52:27,528 INFO L93 Difference]: Finished difference Result 139477 states and 150997 transitions. [2022-07-22 12:52:27,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:52:27,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 96.75) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 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 482 [2022-07-22 12:52:27,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:52:27,612 INFO L225 Difference]: With dead ends: 139477 [2022-07-22 12:52:27,613 INFO L226 Difference]: Without dead ends: 81881 [2022-07-22 12:52:27,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 965 GetRequests, 959 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-22 12:52:27,648 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 824 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1862 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 2412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 1862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 12:52:27,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 108 Invalid, 2412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 1862 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 12:52:27,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81881 states. [2022-07-22 12:52:28,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81881 to 76727. [2022-07-22 12:52:28,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76727 states, 76726 states have (on average 1.077092511013216) internal successors, (82641), 76726 states have internal predecessors, (82641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:28,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76727 states to 76727 states and 82641 transitions. [2022-07-22 12:52:28,557 INFO L78 Accepts]: Start accepts. Automaton has 76727 states and 82641 transitions. Word has length 482 [2022-07-22 12:52:28,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:52:28,557 INFO L495 AbstractCegarLoop]: Abstraction has 76727 states and 82641 transitions. [2022-07-22 12:52:28,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.75) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:28,557 INFO L276 IsEmpty]: Start isEmpty. Operand 76727 states and 82641 transitions. [2022-07-22 12:52:28,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2022-07-22 12:52:28,564 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:52:28,564 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:52:28,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 12:52:28,779 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,SelfDestructingSolverStorable15 [2022-07-22 12:52:28,779 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:52:28,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:52:28,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1548436655, now seen corresponding path program 1 times [2022-07-22 12:52:28,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:52:28,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788891328] [2022-07-22 12:52:28,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:52:28,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:52:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:52:28,927 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 605 proven. 72 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-07-22 12:52:28,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:52:28,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788891328] [2022-07-22 12:52:28,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788891328] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:52:28,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118587544] [2022-07-22 12:52:28,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:52:28,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:52:28,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:52:28,929 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) [2022-07-22 12:52:28,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 12:52:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:52:29,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 12:52:29,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:52:30,114 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 536 proven. 82 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-07-22 12:52:30,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 12:52:30,752 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 617 proven. 1 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-07-22 12:52:30,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118587544] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 12:52:30,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 12:52:30,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2022-07-22 12:52:30,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797435764] [2022-07-22 12:52:30,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 12:52:30,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 12:52:30,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:52:30,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 12:52:30,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-22 12:52:30,754 INFO L87 Difference]: Start difference. First operand 76727 states and 82641 transitions. Second operand has 10 states, 10 states have (on average 81.5) internal successors, (815), 10 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:39,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:52:39,889 INFO L93 Difference]: Finished difference Result 197611 states and 212328 transitions. [2022-07-22 12:52:39,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 12:52:39,890 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 81.5) internal successors, (815), 10 states have internal predecessors, (815), 0 states have call successors, (0), 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 491 [2022-07-22 12:52:39,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:52:40,047 INFO L225 Difference]: With dead ends: 197611 [2022-07-22 12:52:40,047 INFO L226 Difference]: Without dead ends: 119593 [2022-07-22 12:52:40,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1014 GetRequests, 990 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=189, Invalid=411, Unknown=0, NotChecked=0, Total=600 [2022-07-22 12:52:40,076 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 7194 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 8499 mSolverCounterSat, 2770 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7194 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 11269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2770 IncrementalHoareTripleChecker+Valid, 8499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-07-22 12:52:40,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7194 Valid, 370 Invalid, 11269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2770 Valid, 8499 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-07-22 12:52:40,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119593 states. [2022-07-22 12:52:41,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119593 to 100993. [2022-07-22 12:52:41,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100993 states, 100992 states have (on average 1.0715403200253486) internal successors, (108217), 100992 states have internal predecessors, (108217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:41,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100993 states to 100993 states and 108217 transitions. [2022-07-22 12:52:41,574 INFO L78 Accepts]: Start accepts. Automaton has 100993 states and 108217 transitions. Word has length 491 [2022-07-22 12:52:41,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:52:41,574 INFO L495 AbstractCegarLoop]: Abstraction has 100993 states and 108217 transitions. [2022-07-22 12:52:41,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 81.5) internal successors, (815), 10 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:41,574 INFO L276 IsEmpty]: Start isEmpty. Operand 100993 states and 108217 transitions. [2022-07-22 12:52:41,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2022-07-22 12:52:41,583 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:52:41,584 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 12:52:41,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 12:52:41,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:52:41,786 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:52:41,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:52:41,786 INFO L85 PathProgramCache]: Analyzing trace with hash -208962036, now seen corresponding path program 1 times [2022-07-22 12:52:41,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:52:41,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806823623] [2022-07-22 12:52:41,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:52:41,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:52:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:52:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-22 12:52:41,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:52:41,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806823623] [2022-07-22 12:52:41,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806823623] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:52:41,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:52:41,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:52:41,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045484384] [2022-07-22 12:52:41,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:52:41,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:52:41,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:52:41,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:52:41,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:52:41,954 INFO L87 Difference]: Start difference. First operand 100993 states and 108217 transitions. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:44,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:52:44,065 INFO L93 Difference]: Finished difference Result 199839 states and 213970 transitions. [2022-07-22 12:52:44,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:52:44,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 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 560 [2022-07-22 12:52:44,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:52:44,189 INFO L225 Difference]: With dead ends: 199839 [2022-07-22 12:52:44,189 INFO L226 Difference]: Without dead ends: 98844 [2022-07-22 12:52:44,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:52:44,232 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 405 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 12:52:44,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 686 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 12:52:44,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98844 states. [2022-07-22 12:52:45,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98844 to 97980. [2022-07-22 12:52:45,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97980 states, 97979 states have (on average 1.0638708294634565) internal successors, (104237), 97979 states have internal predecessors, (104237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:45,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97980 states to 97980 states and 104237 transitions. [2022-07-22 12:52:45,397 INFO L78 Accepts]: Start accepts. Automaton has 97980 states and 104237 transitions. Word has length 560 [2022-07-22 12:52:45,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:52:45,397 INFO L495 AbstractCegarLoop]: Abstraction has 97980 states and 104237 transitions. [2022-07-22 12:52:45,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:45,398 INFO L276 IsEmpty]: Start isEmpty. Operand 97980 states and 104237 transitions. [2022-07-22 12:52:45,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2022-07-22 12:52:45,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:52:45,407 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-22 12:52:45,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 12:52:45,408 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:52:45,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:52:45,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1801020677, now seen corresponding path program 1 times [2022-07-22 12:52:45,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:52:45,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603357980] [2022-07-22 12:52:45,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:52:45,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:52:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:52:45,766 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 713 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-07-22 12:52:45,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:52:45,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603357980] [2022-07-22 12:52:45,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603357980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:52:45,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:52:45,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:52:45,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700989902] [2022-07-22 12:52:45,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:52:45,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:52:45,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:52:45,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:52:45,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:52:45,770 INFO L87 Difference]: Start difference. First operand 97980 states and 104237 transitions. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:47,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:52:47,738 INFO L93 Difference]: Finished difference Result 208729 states and 222610 transitions. [2022-07-22 12:52:47,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:52:47,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 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 564 [2022-07-22 12:52:47,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:52:47,883 INFO L225 Difference]: With dead ends: 208729 [2022-07-22 12:52:47,883 INFO L226 Difference]: Without dead ends: 111601 [2022-07-22 12:52:47,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:52:47,931 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 272 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:52:47,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 251 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 12:52:48,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111601 states. [2022-07-22 12:52:49,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111601 to 106060. [2022-07-22 12:52:49,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106060 states, 106059 states have (on average 1.0567042872363497) internal successors, (112073), 106059 states have internal predecessors, (112073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:49,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106060 states to 106060 states and 112073 transitions. [2022-07-22 12:52:49,575 INFO L78 Accepts]: Start accepts. Automaton has 106060 states and 112073 transitions. Word has length 564 [2022-07-22 12:52:49,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:52:49,575 INFO L495 AbstractCegarLoop]: Abstraction has 106060 states and 112073 transitions. [2022-07-22 12:52:49,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:49,575 INFO L276 IsEmpty]: Start isEmpty. Operand 106060 states and 112073 transitions. [2022-07-22 12:52:49,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2022-07-22 12:52:49,582 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:52:49,582 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, 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, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 12:52:49,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 12:52:49,583 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:52:49,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:52:49,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1217078744, now seen corresponding path program 1 times [2022-07-22 12:52:49,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:52:49,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946292676] [2022-07-22 12:52:49,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:52:49,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:52:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:52:49,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 1013 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2022-07-22 12:52:49,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:52:49,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946292676] [2022-07-22 12:52:49,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946292676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:52:49,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:52:49,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:52:49,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195786505] [2022-07-22 12:52:49,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:52:49,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:52:49,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:52:49,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:52:49,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:52:49,774 INFO L87 Difference]: Start difference. First operand 106060 states and 112073 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:51,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:52:51,937 INFO L93 Difference]: Finished difference Result 220207 states and 232699 transitions. [2022-07-22 12:52:51,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:52:51,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 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 568 [2022-07-22 12:52:51,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:52:52,092 INFO L225 Difference]: With dead ends: 220207 [2022-07-22 12:52:52,092 INFO L226 Difference]: Without dead ends: 114999 [2022-07-22 12:52:52,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:52:52,138 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 394 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 12:52:52,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 287 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 12:52:52,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114999 states. [2022-07-22 12:52:53,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114999 to 112860. [2022-07-22 12:52:53,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112860 states, 112859 states have (on average 1.0546168227611445) internal successors, (119023), 112859 states have internal predecessors, (119023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:53,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112860 states to 112860 states and 119023 transitions. [2022-07-22 12:52:53,744 INFO L78 Accepts]: Start accepts. Automaton has 112860 states and 119023 transitions. Word has length 568 [2022-07-22 12:52:53,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:52:53,745 INFO L495 AbstractCegarLoop]: Abstraction has 112860 states and 119023 transitions. [2022-07-22 12:52:53,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:53,745 INFO L276 IsEmpty]: Start isEmpty. Operand 112860 states and 119023 transitions. [2022-07-22 12:52:53,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2022-07-22 12:52:53,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:52:53,753 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 12:52:53,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 12:52:53,754 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:52:53,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:52:53,754 INFO L85 PathProgramCache]: Analyzing trace with hash -858137151, now seen corresponding path program 1 times [2022-07-22 12:52:53,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:52:53,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966386779] [2022-07-22 12:52:53,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:52:53,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:52:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:52:53,909 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 299 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-22 12:52:53,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:52:53,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966386779] [2022-07-22 12:52:53,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966386779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:52:53,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:52:53,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:52:53,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794846397] [2022-07-22 12:52:53,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:52:53,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:52:53,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:52:53,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:52:53,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:52:53,911 INFO L87 Difference]: Start difference. First operand 112860 states and 119023 transitions. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:55,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:52:55,989 INFO L93 Difference]: Finished difference Result 230414 states and 243144 transitions. [2022-07-22 12:52:55,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:52:55,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 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 589 [2022-07-22 12:52:55,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:52:56,132 INFO L225 Difference]: With dead ends: 230414 [2022-07-22 12:52:56,132 INFO L226 Difference]: Without dead ends: 117981 [2022-07-22 12:52:56,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:52:56,185 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 436 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:52:56,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 195 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 12:52:56,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117981 states. [2022-07-22 12:52:57,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117981 to 113285. [2022-07-22 12:52:57,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113285 states, 113284 states have (on average 1.0545355036898414) internal successors, (119462), 113284 states have internal predecessors, (119462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:57,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113285 states to 113285 states and 119462 transitions. [2022-07-22 12:52:57,899 INFO L78 Accepts]: Start accepts. Automaton has 113285 states and 119462 transitions. Word has length 589 [2022-07-22 12:52:57,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:52:57,899 INFO L495 AbstractCegarLoop]: Abstraction has 113285 states and 119462 transitions. [2022-07-22 12:52:57,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:52:57,900 INFO L276 IsEmpty]: Start isEmpty. Operand 113285 states and 119462 transitions. [2022-07-22 12:52:57,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2022-07-22 12:52:57,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:52:57,909 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:52:57,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 12:52:57,910 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:52:57,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:52:57,910 INFO L85 PathProgramCache]: Analyzing trace with hash -76029997, now seen corresponding path program 1 times [2022-07-22 12:52:57,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:52:57,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386068975] [2022-07-22 12:52:57,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:52:57,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:52:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:52:58,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 990 proven. 216 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-07-22 12:52:58,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:52:58,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386068975] [2022-07-22 12:52:58,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386068975] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:52:58,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939232493] [2022-07-22 12:52:58,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:52:58,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:52:58,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:52:58,362 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) [2022-07-22 12:52:58,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 12:52:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:52:58,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 12:52:58,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:52:58,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 883 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2022-07-22 12:52:58,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 12:52:58,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939232493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:52:58,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 12:52:58,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-22 12:52:58,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118414928] [2022-07-22 12:52:58,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:52:58,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:52:58,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:52:58,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:52:58,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-22 12:52:58,773 INFO L87 Difference]: Start difference. First operand 113285 states and 119462 transitions. Second operand has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:53:01,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:53:01,525 INFO L93 Difference]: Finished difference Result 254252 states and 268013 transitions. [2022-07-22 12:53:01,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:53:01,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 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 636 [2022-07-22 12:53:01,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:53:01,710 INFO L225 Difference]: With dead ends: 254252 [2022-07-22 12:53:01,711 INFO L226 Difference]: Without dead ends: 141819 [2022-07-22 12:53:01,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-22 12:53:01,773 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 754 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 2739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 12:53:01,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 198 Invalid, 2739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 12:53:01,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141819 states. [2022-07-22 12:53:03,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141819 to 123531. [2022-07-22 12:53:03,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123531 states, 123530 states have (on average 1.0546992633368413) internal successors, (130287), 123530 states have internal predecessors, (130287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:53:03,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123531 states to 123531 states and 130287 transitions. [2022-07-22 12:53:03,762 INFO L78 Accepts]: Start accepts. Automaton has 123531 states and 130287 transitions. Word has length 636 [2022-07-22 12:53:03,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:53:03,763 INFO L495 AbstractCegarLoop]: Abstraction has 123531 states and 130287 transitions. [2022-07-22 12:53:03,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:53:03,763 INFO L276 IsEmpty]: Start isEmpty. Operand 123531 states and 130287 transitions. [2022-07-22 12:53:03,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2022-07-22 12:53:03,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:53:03,774 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 12:53:03,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 12:53:03,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:53:03,988 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:53:03,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:53:03,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1849158532, now seen corresponding path program 1 times [2022-07-22 12:53:03,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:53:03,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752384142] [2022-07-22 12:53:03,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:53:03,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:53:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:53:04,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 824 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-07-22 12:53:04,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:53:04,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752384142] [2022-07-22 12:53:04,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752384142] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:53:04,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:53:04,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:53:04,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364351587] [2022-07-22 12:53:04,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:53:04,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:53:04,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:53:04,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:53:04,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:53:04,140 INFO L87 Difference]: Start difference. First operand 123531 states and 130287 transitions. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:53:06,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:53:06,373 INFO L93 Difference]: Finished difference Result 263661 states and 278013 transitions. [2022-07-22 12:53:06,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:53:06,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 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 661 [2022-07-22 12:53:06,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:53:06,819 INFO L225 Difference]: With dead ends: 263661 [2022-07-22 12:53:06,820 INFO L226 Difference]: Without dead ends: 140982 [2022-07-22 12:53:06,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:53:06,873 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 240 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:53:06,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 706 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 12:53:06,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140982 states. [2022-07-22 12:53:08,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140982 to 132884. [2022-07-22 12:53:08,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132884 states, 132883 states have (on average 1.0527908009301417) internal successors, (139898), 132883 states have internal predecessors, (139898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:53:09,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132884 states to 132884 states and 139898 transitions. [2022-07-22 12:53:09,012 INFO L78 Accepts]: Start accepts. Automaton has 132884 states and 139898 transitions. Word has length 661 [2022-07-22 12:53:09,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:53:09,012 INFO L495 AbstractCegarLoop]: Abstraction has 132884 states and 139898 transitions. [2022-07-22 12:53:09,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:53:09,013 INFO L276 IsEmpty]: Start isEmpty. Operand 132884 states and 139898 transitions. [2022-07-22 12:53:09,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2022-07-22 12:53:09,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:53:09,024 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, 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, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 12:53:09,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 12:53:09,025 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:53:09,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:53:09,025 INFO L85 PathProgramCache]: Analyzing trace with hash 410237855, now seen corresponding path program 1 times [2022-07-22 12:53:09,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:53:09,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521899808] [2022-07-22 12:53:09,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:53:09,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:53:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:53:09,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1481 backedges. 929 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-07-22 12:53:09,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:53:09,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521899808] [2022-07-22 12:53:09,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521899808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:53:09,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:53:09,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 12:53:09,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724656105] [2022-07-22 12:53:09,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:53:09,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:53:09,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:53:09,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:53:09,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:53:09,256 INFO L87 Difference]: Start difference. First operand 132884 states and 139898 transitions. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)