./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem19_label03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/Problem19_label03.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 26e05216e875976d2a927f5405c2e5bc5a3ea5afc4bbe64c3ca3f67a96ae3961 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 01:42:18,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 01:42:18,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 01:42:18,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 01:42:18,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 01:42:18,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 01:42:18,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 01:42:18,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 01:42:18,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 01:42:18,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 01:42:18,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 01:42:18,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 01:42:18,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 01:42:18,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 01:42:18,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 01:42:18,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 01:42:18,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 01:42:18,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 01:42:18,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 01:42:18,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 01:42:18,326 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 01:42:18,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 01:42:18,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 01:42:18,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 01:42:18,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 01:42:18,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 01:42:18,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 01:42:18,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 01:42:18,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 01:42:18,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 01:42:18,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 01:42:18,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 01:42:18,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 01:42:18,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 01:42:18,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 01:42:18,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 01:42:18,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 01:42:18,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 01:42:18,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 01:42:18,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 01:42:18,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 01:42:18,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 01:42:18,356 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 01:42:18,394 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 01:42:18,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 01:42:18,401 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 01:42:18,402 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 01:42:18,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 01:42:18,403 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 01:42:18,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 01:42:18,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 01:42:18,404 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 01:42:18,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 01:42:18,405 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 01:42:18,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 01:42:18,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 01:42:18,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 01:42:18,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 01:42:18,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 01:42:18,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 01:42:18,406 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 01:42:18,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 01:42:18,407 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 01:42:18,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 01:42:18,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 01:42:18,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 01:42:18,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 01:42:18,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 01:42:18,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 01:42:18,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 01:42:18,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 01:42:18,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 01:42:18,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 01:42:18,409 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 01:42:18,410 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 01:42:18,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 01:42:18,410 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26e05216e875976d2a927f5405c2e5bc5a3ea5afc4bbe64c3ca3f67a96ae3961 [2022-07-12 01:42:18,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 01:42:18,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 01:42:18,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 01:42:18,716 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 01:42:18,717 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 01:42:18,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label03.c [2022-07-12 01:42:18,779 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf510103c/b38b97a4d54e4a9cb0d76e0b6a26d7df/FLAG629c7dd0b [2022-07-12 01:42:19,552 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 01:42:19,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label03.c [2022-07-12 01:42:19,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf510103c/b38b97a4d54e4a9cb0d76e0b6a26d7df/FLAG629c7dd0b [2022-07-12 01:42:20,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf510103c/b38b97a4d54e4a9cb0d76e0b6a26d7df [2022-07-12 01:42:20,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 01:42:20,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 01:42:20,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 01:42:20,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 01:42:20,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 01:42:20,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:42:20" (1/1) ... [2022-07-12 01:42:20,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7bcd1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:42:20, skipping insertion in model container [2022-07-12 01:42:20,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:42:20" (1/1) ... [2022-07-12 01:42:20,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 01:42:20,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 01:42:20,654 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/Problem19_label03.c[7444,7457] [2022-07-12 01:42:21,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 01:42:21,802 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 01:42:21,834 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/Problem19_label03.c[7444,7457] [2022-07-12 01:42:22,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 01:42:22,648 INFO L208 MainTranslator]: Completed translation [2022-07-12 01:42:22,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:42:22 WrapperNode [2022-07-12 01:42:22,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 01:42:22,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 01:42:22,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 01:42:22,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 01:42:22,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:42:22" (1/1) ... [2022-07-12 01:42:22,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:42:22" (1/1) ... [2022-07-12 01:42:23,748 INFO L137 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-07-12 01:42:23,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 01:42:23,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 01:42:23,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 01:42:23,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 01:42:23,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:42:22" (1/1) ... [2022-07-12 01:42:23,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:42:22" (1/1) ... [2022-07-12 01:42:23,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:42:22" (1/1) ... [2022-07-12 01:42:23,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:42:22" (1/1) ... [2022-07-12 01:42:24,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:42:22" (1/1) ... [2022-07-12 01:42:24,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:42:22" (1/1) ... [2022-07-12 01:42:24,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:42:22" (1/1) ... [2022-07-12 01:42:24,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 01:42:24,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 01:42:24,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 01:42:24,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 01:42:24,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:42:22" (1/1) ... [2022-07-12 01:42:24,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 01:42:24,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:42:24,901 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) [2022-07-12 01:42:24,966 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 [2022-07-12 01:42:25,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 01:42:25,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 01:42:25,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 01:42:25,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 01:42:25,106 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 01:42:25,107 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 01:42:32,878 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 01:42:32,905 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 01:42:32,906 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 01:42:32,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:42:32 BoogieIcfgContainer [2022-07-12 01:42:32,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 01:42:32,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 01:42:32,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 01:42:32,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 01:42:32,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 01:42:20" (1/3) ... [2022-07-12 01:42:32,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4f925a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:42:32, skipping insertion in model container [2022-07-12 01:42:32,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:42:22" (2/3) ... [2022-07-12 01:42:32,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4f925a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:42:32, skipping insertion in model container [2022-07-12 01:42:32,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:42:32" (3/3) ... [2022-07-12 01:42:32,921 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label03.c [2022-07-12 01:42:32,935 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 01:42:32,935 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 01:42:33,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 01:42:33,048 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@2a8cd77b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1c98ae94 [2022-07-12 01:42:33,049 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 01:42:33,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:42:33,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-12 01:42:33,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:42:33,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:42:33,084 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:42:33,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:42:33,091 INFO L85 PathProgramCache]: Analyzing trace with hash -66916295, now seen corresponding path program 1 times [2022-07-12 01:42:33,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:42:33,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813310500] [2022-07-12 01:42:33,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:42:33,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:42:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:42:33,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:42:33,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:42:33,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813310500] [2022-07-12 01:42:33,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813310500] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:42:33,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:42:33,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:42:33,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883334039] [2022-07-12 01:42:33,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:42:33,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:42:33,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:42:33,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:42:33,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:42:33,504 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 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 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:42:47,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:42:47,052 INFO L93 Difference]: Finished difference Result 6284 states and 12039 transitions. [2022-07-12 01:42:47,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:42:47,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-07-12 01:42:47,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:42:47,096 INFO L225 Difference]: With dead ends: 6284 [2022-07-12 01:42:47,098 INFO L226 Difference]: Without dead ends: 4467 [2022-07-12 01:42:47,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 01:42:47,112 INFO L413 NwaCegarLoop]: 1812 mSDtfsCounter, 4225 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 10828 mSolverCounterSat, 2357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4225 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 13185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2357 IncrementalHoareTripleChecker+Valid, 10828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-07-12 01:42:47,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4225 Valid, 2090 Invalid, 13185 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2357 Valid, 10828 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2022-07-12 01:42:47,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4467 states. [2022-07-12 01:42:47,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4467 to 4465. [2022-07-12 01:42:47,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4465 states, 4464 states have (on average 1.564516129032258) internal successors, (6984), 4464 states have internal predecessors, (6984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:42:47,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4465 states to 4465 states and 6984 transitions. [2022-07-12 01:42:47,298 INFO L78 Accepts]: Start accepts. Automaton has 4465 states and 6984 transitions. Word has length 57 [2022-07-12 01:42:47,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:42:47,300 INFO L495 AbstractCegarLoop]: Abstraction has 4465 states and 6984 transitions. [2022-07-12 01:42:47,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:42:47,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4465 states and 6984 transitions. [2022-07-12 01:42:47,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-07-12 01:42:47,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:42:47,316 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:42:47,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 01:42:47,317 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:42:47,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:42:47,318 INFO L85 PathProgramCache]: Analyzing trace with hash -379289893, now seen corresponding path program 1 times [2022-07-12 01:42:47,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:42:47,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036558728] [2022-07-12 01:42:47,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:42:47,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:42:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:42:47,752 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:42:47,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:42:47,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036558728] [2022-07-12 01:42:47,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036558728] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:42:47,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:42:47,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:42:47,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512853314] [2022-07-12 01:42:47,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:42:47,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:42:47,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:42:47,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:42:47,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:42:47,757 INFO L87 Difference]: Start difference. First operand 4465 states and 6984 transitions. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:42:58,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:42:58,012 INFO L93 Difference]: Finished difference Result 11708 states and 20176 transitions. [2022-07-12 01:42:58,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:42:58,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 [2022-07-12 01:42:58,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:42:58,044 INFO L225 Difference]: With dead ends: 11708 [2022-07-12 01:42:58,044 INFO L226 Difference]: Without dead ends: 8610 [2022-07-12 01:42:58,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 01:42:58,051 INFO L413 NwaCegarLoop]: 1804 mSDtfsCounter, 3757 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 9457 mSolverCounterSat, 1337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 10794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1337 IncrementalHoareTripleChecker+Valid, 9457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-07-12 01:42:58,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3757 Valid, 2159 Invalid, 10794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1337 Valid, 9457 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-07-12 01:42:58,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8610 states. [2022-07-12 01:42:58,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8610 to 8594. [2022-07-12 01:42:58,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8594 states, 8593 states have (on average 1.3481903875247294) internal successors, (11585), 8593 states have internal predecessors, (11585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:42:58,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8594 states to 8594 states and 11585 transitions. [2022-07-12 01:42:58,217 INFO L78 Accepts]: Start accepts. Automaton has 8594 states and 11585 transitions. Word has length 264 [2022-07-12 01:42:58,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:42:58,221 INFO L495 AbstractCegarLoop]: Abstraction has 8594 states and 11585 transitions. [2022-07-12 01:42:58,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:42:58,222 INFO L276 IsEmpty]: Start isEmpty. Operand 8594 states and 11585 transitions. [2022-07-12 01:42:58,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-07-12 01:42:58,226 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:42:58,227 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:42:58,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 01:42:58,230 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:42:58,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:42:58,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1757372353, now seen corresponding path program 1 times [2022-07-12 01:42:58,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:42:58,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525681688] [2022-07-12 01:42:58,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:42:58,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:42:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:42:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:42:58,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:42:58,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525681688] [2022-07-12 01:42:58,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525681688] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:42:58,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:42:58,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:42:58,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124422338] [2022-07-12 01:42:58,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:42:58,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:42:58,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:42:58,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:42:58,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:42:58,542 INFO L87 Difference]: Start difference. First operand 8594 states and 11585 transitions. Second operand has 4 states, 4 states have (on average 73.0) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:43:04,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:43:04,048 INFO L93 Difference]: Finished difference Result 14487 states and 20451 transitions. [2022-07-12 01:43:04,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:43:04,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 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 292 [2022-07-12 01:43:04,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:43:04,069 INFO L225 Difference]: With dead ends: 14487 [2022-07-12 01:43:04,069 INFO L226 Difference]: Without dead ends: 8594 [2022-07-12 01:43:04,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:43:04,077 INFO L413 NwaCegarLoop]: 1775 mSDtfsCounter, 1153 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 5715 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 5723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:43:04,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1153 Valid, 1954 Invalid, 5723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 5715 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-12 01:43:04,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8594 states. [2022-07-12 01:43:04,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8594 to 8594. [2022-07-12 01:43:04,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8594 states, 8593 states have (on average 1.3466775282206447) internal successors, (11572), 8593 states have internal predecessors, (11572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:43:04,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8594 states to 8594 states and 11572 transitions. [2022-07-12 01:43:04,233 INFO L78 Accepts]: Start accepts. Automaton has 8594 states and 11572 transitions. Word has length 292 [2022-07-12 01:43:04,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:43:04,234 INFO L495 AbstractCegarLoop]: Abstraction has 8594 states and 11572 transitions. [2022-07-12 01:43:04,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:43:04,234 INFO L276 IsEmpty]: Start isEmpty. Operand 8594 states and 11572 transitions. [2022-07-12 01:43:04,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2022-07-12 01:43:04,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:43:04,245 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, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:43:04,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 01:43:04,247 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:43:04,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:43:04,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1871432933, now seen corresponding path program 1 times [2022-07-12 01:43:04,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:43:04,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871575189] [2022-07-12 01:43:04,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:43:04,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:43:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:43:04,621 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-12 01:43:04,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:43:04,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871575189] [2022-07-12 01:43:04,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871575189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:43:04,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:43:04,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:43:04,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203485200] [2022-07-12 01:43:04,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:43:04,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:43:04,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:43:04,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:43:04,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:43:04,625 INFO L87 Difference]: Start difference. First operand 8594 states and 11572 transitions. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 2 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:43:10,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:43:10,483 INFO L93 Difference]: Finished difference Result 20123 states and 28984 transitions. [2022-07-12 01:43:10,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:43:10,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 2 states have internal predecessors, (546), 0 states have call successors, (0), 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 613 [2022-07-12 01:43:10,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:43:10,530 INFO L225 Difference]: With dead ends: 20123 [2022-07-12 01:43:10,530 INFO L226 Difference]: Without dead ends: 14261 [2022-07-12 01:43:10,542 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 [2022-07-12 01:43:10,543 INFO L413 NwaCegarLoop]: 1338 mSDtfsCounter, 1356 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 4196 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 5626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-12 01:43:10,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 1610 Invalid, 5626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4196 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-12 01:43:10,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14261 states. [2022-07-12 01:43:10,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14261 to 14244. [2022-07-12 01:43:10,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14244 states, 14243 states have (on average 1.2723443094853613) internal successors, (18122), 14243 states have internal predecessors, (18122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:43:10,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14244 states to 14244 states and 18122 transitions. [2022-07-12 01:43:10,785 INFO L78 Accepts]: Start accepts. Automaton has 14244 states and 18122 transitions. Word has length 613 [2022-07-12 01:43:10,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:43:10,786 INFO L495 AbstractCegarLoop]: Abstraction has 14244 states and 18122 transitions. [2022-07-12 01:43:10,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 2 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:43:10,788 INFO L276 IsEmpty]: Start isEmpty. Operand 14244 states and 18122 transitions. [2022-07-12 01:43:10,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2022-07-12 01:43:10,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:43:10,799 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, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:43:10,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 01:43:10,800 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:43:10,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:43:10,801 INFO L85 PathProgramCache]: Analyzing trace with hash 994450106, now seen corresponding path program 1 times [2022-07-12 01:43:10,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:43:10,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21421175] [2022-07-12 01:43:10,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:43:10,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:43:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:43:11,121 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-12 01:43:11,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:43:11,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21421175] [2022-07-12 01:43:11,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21421175] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:43:11,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:43:11,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:43:11,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838979790] [2022-07-12 01:43:11,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:43:11,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:43:11,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:43:11,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:43:11,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:43:11,127 INFO L87 Difference]: Start difference. First operand 14244 states and 18122 transitions. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 2 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:43:17,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:43:17,051 INFO L93 Difference]: Finished difference Result 28511 states and 37633 transitions. [2022-07-12 01:43:17,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:43:17,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 2 states have internal predecessors, (546), 0 states have call successors, (0), 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 618 [2022-07-12 01:43:17,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:43:17,090 INFO L225 Difference]: With dead ends: 28511 [2022-07-12 01:43:17,090 INFO L226 Difference]: Without dead ends: 16999 [2022-07-12 01:43:17,106 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 [2022-07-12 01:43:17,107 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 1387 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 3927 mSolverCounterSat, 2123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 6050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2123 IncrementalHoareTripleChecker+Valid, 3927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-12 01:43:17,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 757 Invalid, 6050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2123 Valid, 3927 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-12 01:43:17,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16999 states. [2022-07-12 01:43:17,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16999 to 16985. [2022-07-12 01:43:17,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16985 states, 16984 states have (on average 1.270843146490815) internal successors, (21584), 16984 states have internal predecessors, (21584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:43:17,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16985 states to 16985 states and 21584 transitions. [2022-07-12 01:43:17,442 INFO L78 Accepts]: Start accepts. Automaton has 16985 states and 21584 transitions. Word has length 618 [2022-07-12 01:43:17,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:43:17,444 INFO L495 AbstractCegarLoop]: Abstraction has 16985 states and 21584 transitions. [2022-07-12 01:43:17,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 2 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:43:17,448 INFO L276 IsEmpty]: Start isEmpty. Operand 16985 states and 21584 transitions. [2022-07-12 01:43:17,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2022-07-12 01:43:17,460 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:43:17,461 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, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:43:17,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 01:43:17,461 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:43:17,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:43:17,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1413429679, now seen corresponding path program 1 times [2022-07-12 01:43:17,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:43:17,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368395022] [2022-07-12 01:43:17,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:43:17,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:43:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:43:17,743 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-12 01:43:17,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:43:17,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368395022] [2022-07-12 01:43:17,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368395022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:43:17,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:43:17,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:43:17,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906060226] [2022-07-12 01:43:17,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:43:17,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:43:17,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:43:17,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:43:17,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:43:17,747 INFO L87 Difference]: Start difference. First operand 16985 states and 21584 transitions. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 2 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:43:24,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:43:24,373 INFO L93 Difference]: Finished difference Result 43710 states and 57270 transitions. [2022-07-12 01:43:24,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:43:24,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 2 states have internal predecessors, (546), 0 states have call successors, (0), 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 621 [2022-07-12 01:43:24,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:43:24,438 INFO L225 Difference]: With dead ends: 43710 [2022-07-12 01:43:24,438 INFO L226 Difference]: Without dead ends: 29457 [2022-07-12 01:43:24,459 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 [2022-07-12 01:43:24,460 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 2112 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 5114 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2112 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 5548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:43:24,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2112 Valid, 985 Invalid, 5548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5114 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-07-12 01:43:24,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29457 states. [2022-07-12 01:43:24,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29457 to 29454. [2022-07-12 01:43:24,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29454 states, 29453 states have (on average 1.2556955148881268) internal successors, (36984), 29453 states have internal predecessors, (36984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:43:24,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29454 states to 29454 states and 36984 transitions. [2022-07-12 01:43:24,839 INFO L78 Accepts]: Start accepts. Automaton has 29454 states and 36984 transitions. Word has length 621 [2022-07-12 01:43:24,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:43:24,843 INFO L495 AbstractCegarLoop]: Abstraction has 29454 states and 36984 transitions. [2022-07-12 01:43:24,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 2 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:43:24,844 INFO L276 IsEmpty]: Start isEmpty. Operand 29454 states and 36984 transitions. [2022-07-12 01:43:24,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2022-07-12 01:43:24,851 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:43:24,852 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:43:24,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 01:43:24,852 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:43:24,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:43:24,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1919449267, now seen corresponding path program 1 times [2022-07-12 01:43:24,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:43:24,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934654765] [2022-07-12 01:43:24,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:43:24,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:43:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:43:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:43:25,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:43:25,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934654765] [2022-07-12 01:43:25,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934654765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:43:25,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:43:25,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 01:43:25,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573838253] [2022-07-12 01:43:25,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:43:25,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 01:43:25,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:43:25,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 01:43:25,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 01:43:25,225 INFO L87 Difference]: Start difference. First operand 29454 states and 36984 transitions. Second operand has 5 states, 5 states have (on average 129.6) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:43:35,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:43:35,190 INFO L93 Difference]: Finished difference Result 63037 states and 78529 transitions. [2022-07-12 01:43:35,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 01:43:35,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 129.6) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 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 648 [2022-07-12 01:43:35,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:43:35,246 INFO L225 Difference]: With dead ends: 63037 [2022-07-12 01:43:35,247 INFO L226 Difference]: Without dead ends: 36289 [2022-07-12 01:43:35,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 01:43:35,281 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 2169 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 13132 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2169 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 13326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 13132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-07-12 01:43:35,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2169 Valid, 2184 Invalid, 13326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 13132 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-07-12 01:43:35,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36289 states. [2022-07-12 01:43:35,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36289 to 34921. [2022-07-12 01:43:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34921 states, 34920 states have (on average 1.2224513172966782) internal successors, (42688), 34920 states have internal predecessors, (42688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:43:35,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34921 states to 34921 states and 42688 transitions. [2022-07-12 01:43:35,739 INFO L78 Accepts]: Start accepts. Automaton has 34921 states and 42688 transitions. Word has length 648 [2022-07-12 01:43:35,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:43:35,740 INFO L495 AbstractCegarLoop]: Abstraction has 34921 states and 42688 transitions. [2022-07-12 01:43:35,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.6) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:43:35,741 INFO L276 IsEmpty]: Start isEmpty. Operand 34921 states and 42688 transitions. [2022-07-12 01:43:35,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 851 [2022-07-12 01:43:35,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:43:35,749 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:43:35,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 01:43:35,750 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:43:35,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:43:35,750 INFO L85 PathProgramCache]: Analyzing trace with hash 888379329, now seen corresponding path program 1 times [2022-07-12 01:43:35,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:43:35,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256970083] [2022-07-12 01:43:35,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:43:35,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:43:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:43:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 113 proven. 51 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-07-12 01:43:36,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:43:36,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256970083] [2022-07-12 01:43:36,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256970083] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:43:36,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764190495] [2022-07-12 01:43:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:43:36,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:43:36,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:43:36,183 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) [2022-07-12 01:43:36,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 01:43:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:43:36,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 01:43:36,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:43:36,637 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-07-12 01:43:36,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 01:43:36,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764190495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:43:36,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 01:43:36,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-12 01:43:36,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519176101] [2022-07-12 01:43:36,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:43:36,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:43:36,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:43:36,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:43:36,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:43:36,641 INFO L87 Difference]: Start difference. First operand 34921 states and 42688 transitions. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:43:43,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:43:43,219 INFO L93 Difference]: Finished difference Result 94584 states and 117561 transitions. [2022-07-12 01:43:43,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:43:43,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 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 850 [2022-07-12 01:43:43,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:43:43,332 INFO L225 Difference]: With dead ends: 94584 [2022-07-12 01:43:43,332 INFO L226 Difference]: Without dead ends: 62395 [2022-07-12 01:43:43,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 853 GetRequests, 849 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:43:43,363 INFO L413 NwaCegarLoop]: 1127 mSDtfsCounter, 1565 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 4165 mSolverCounterSat, 1912 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 6077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1912 IncrementalHoareTripleChecker+Valid, 4165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-07-12 01:43:43,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1565 Valid, 1259 Invalid, 6077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1912 Valid, 4165 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-07-12 01:43:43,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62395 states. [2022-07-12 01:43:43,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62395 to 60903. [2022-07-12 01:43:43,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60903 states, 60902 states have (on average 1.2042297461495517) internal successors, (73340), 60902 states have internal predecessors, (73340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:43:44,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60903 states to 60903 states and 73340 transitions. [2022-07-12 01:43:44,029 INFO L78 Accepts]: Start accepts. Automaton has 60903 states and 73340 transitions. Word has length 850 [2022-07-12 01:43:44,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:43:44,030 INFO L495 AbstractCegarLoop]: Abstraction has 60903 states and 73340 transitions. [2022-07-12 01:43:44,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:43:44,031 INFO L276 IsEmpty]: Start isEmpty. Operand 60903 states and 73340 transitions. [2022-07-12 01:43:44,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 917 [2022-07-12 01:43:44,040 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:43:44,041 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:43:44,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 01:43:44,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:43:44,256 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:43:44,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:43:44,256 INFO L85 PathProgramCache]: Analyzing trace with hash 454334267, now seen corresponding path program 1 times [2022-07-12 01:43:44,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:43:44,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958786763] [2022-07-12 01:43:44,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:43:44,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:43:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:43:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 483 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-12 01:43:44,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:43:44,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958786763] [2022-07-12 01:43:44,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958786763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:43:44,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:43:44,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:43:44,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405956231] [2022-07-12 01:43:44,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:43:44,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:43:44,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:43:44,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:43:44,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:43:44,746 INFO L87 Difference]: Start difference. First operand 60903 states and 73340 transitions. Second operand has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:43:51,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:43:51,907 INFO L93 Difference]: Finished difference Result 147865 states and 180254 transitions. [2022-07-12 01:43:51,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:43:51,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 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 916 [2022-07-12 01:43:51,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:43:52,019 INFO L225 Difference]: With dead ends: 147865 [2022-07-12 01:43:52,019 INFO L226 Difference]: Without dead ends: 89694 [2022-07-12 01:43:52,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:43:52,056 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1584 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 4237 mSolverCounterSat, 2344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 6581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2344 IncrementalHoareTripleChecker+Valid, 4237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-07-12 01:43:52,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1584 Valid, 645 Invalid, 6581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2344 Valid, 4237 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-07-12 01:43:52,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89694 states. [2022-07-12 01:43:52,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89694 to 82750. [2022-07-12 01:43:52,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82750 states, 82749 states have (on average 1.2327762269030442) internal successors, (102011), 82749 states have internal predecessors, (102011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:43:52,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82750 states to 82750 states and 102011 transitions. [2022-07-12 01:43:52,906 INFO L78 Accepts]: Start accepts. Automaton has 82750 states and 102011 transitions. Word has length 916 [2022-07-12 01:43:52,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:43:52,907 INFO L495 AbstractCegarLoop]: Abstraction has 82750 states and 102011 transitions. [2022-07-12 01:43:52,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:43:52,907 INFO L276 IsEmpty]: Start isEmpty. Operand 82750 states and 102011 transitions. [2022-07-12 01:43:52,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2022-07-12 01:43:52,919 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:43:52,920 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:43:52,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 01:43:52,920 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:43:52,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:43:52,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1057514370, now seen corresponding path program 1 times [2022-07-12 01:43:52,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:43:52,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184125379] [2022-07-12 01:43:52,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:43:52,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:43:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:43:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 965 backedges. 701 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-12 01:43:53,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:43:53,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184125379] [2022-07-12 01:43:53,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184125379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:43:53,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:43:53,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 01:43:53,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781296654] [2022-07-12 01:43:53,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:43:53,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:43:53,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:43:53,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:43:53,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:43:53,956 INFO L87 Difference]: Start difference. First operand 82750 states and 102011 transitions. Second operand has 4 states, 4 states have (on average 180.25) internal successors, (721), 4 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:44:05,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:44:05,457 INFO L93 Difference]: Finished difference Result 277643 states and 350682 transitions. [2022-07-12 01:44:05,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:44:05,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 180.25) internal successors, (721), 4 states have internal predecessors, (721), 0 states have call successors, (0), 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 983 [2022-07-12 01:44:05,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:44:05,765 INFO L225 Difference]: With dead ends: 277643 [2022-07-12 01:44:05,765 INFO L226 Difference]: Without dead ends: 197625 [2022-07-12 01:44:05,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:44:05,812 INFO L413 NwaCegarLoop]: 1220 mSDtfsCounter, 3335 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 8777 mSolverCounterSat, 2798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3335 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 11575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2798 IncrementalHoareTripleChecker+Valid, 8777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-07-12 01:44:05,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3335 Valid, 1494 Invalid, 11575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2798 Valid, 8777 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2022-07-12 01:44:06,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197625 states. [2022-07-12 01:44:08,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197625 to 194768. [2022-07-12 01:44:08,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194768 states, 194767 states have (on average 1.2057021980109566) internal successors, (234831), 194767 states have internal predecessors, (234831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:44:08,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194768 states to 194768 states and 234831 transitions. [2022-07-12 01:44:08,874 INFO L78 Accepts]: Start accepts. Automaton has 194768 states and 234831 transitions. Word has length 983 [2022-07-12 01:44:08,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:44:08,875 INFO L495 AbstractCegarLoop]: Abstraction has 194768 states and 234831 transitions. [2022-07-12 01:44:08,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.25) internal successors, (721), 4 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:44:08,875 INFO L276 IsEmpty]: Start isEmpty. Operand 194768 states and 234831 transitions. [2022-07-12 01:44:08,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 993 [2022-07-12 01:44:08,886 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:44:08,887 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:44:08,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 01:44:08,887 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:44:08,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:44:08,888 INFO L85 PathProgramCache]: Analyzing trace with hash 312094617, now seen corresponding path program 1 times [2022-07-12 01:44:08,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:44:08,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726075640] [2022-07-12 01:44:08,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:44:08,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:44:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:44:09,509 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 596 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-07-12 01:44:09,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:44:09,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726075640] [2022-07-12 01:44:09,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726075640] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:44:09,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:44:09,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:44:09,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051096993] [2022-07-12 01:44:09,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:44:09,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:44:09,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:44:09,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:44:09,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:44:09,513 INFO L87 Difference]: Start difference. First operand 194768 states and 234831 transitions. Second operand has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:44:17,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:44:17,240 INFO L93 Difference]: Finished difference Result 434591 states and 525485 transitions. [2022-07-12 01:44:17,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:44:17,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 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 992 [2022-07-12 01:44:17,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:44:17,721 INFO L225 Difference]: With dead ends: 434591 [2022-07-12 01:44:17,721 INFO L226 Difference]: Without dead ends: 258941 [2022-07-12 01:44:17,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:44:17,826 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 1717 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 4014 mSolverCounterSat, 1792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 5806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1792 IncrementalHoareTripleChecker+Valid, 4014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-12 01:44:17,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1717 Valid, 751 Invalid, 5806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1792 Valid, 4014 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-07-12 01:44:18,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258941 states. [2022-07-12 01:44:21,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258941 to 246645. [2022-07-12 01:44:21,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246645 states, 246644 states have (on average 1.1750863592870697) internal successors, (289828), 246644 states have internal predecessors, (289828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:44:21,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246645 states to 246645 states and 289828 transitions. [2022-07-12 01:44:21,534 INFO L78 Accepts]: Start accepts. Automaton has 246645 states and 289828 transitions. Word has length 992 [2022-07-12 01:44:21,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:44:21,535 INFO L495 AbstractCegarLoop]: Abstraction has 246645 states and 289828 transitions. [2022-07-12 01:44:21,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:44:21,535 INFO L276 IsEmpty]: Start isEmpty. Operand 246645 states and 289828 transitions. [2022-07-12 01:44:21,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1171 [2022-07-12 01:44:21,557 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:44:21,558 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:44:21,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 01:44:21,559 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:44:21,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:44:21,559 INFO L85 PathProgramCache]: Analyzing trace with hash -2139467054, now seen corresponding path program 1 times [2022-07-12 01:44:21,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:44:21,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019991585] [2022-07-12 01:44:21,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:44:21,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:44:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:44:22,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1857 backedges. 1158 proven. 485 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-07-12 01:44:22,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:44:22,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019991585] [2022-07-12 01:44:22,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019991585] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:44:22,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294955633] [2022-07-12 01:44:22,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:44:22,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:44:22,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:44:22,711 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) [2022-07-12 01:44:22,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 01:44:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:44:23,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 01:44:23,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:44:23,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1857 backedges. 329 proven. 0 refuted. 0 times theorem prover too weak. 1528 trivial. 0 not checked. [2022-07-12 01:44:23,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 01:44:23,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294955633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:44:23,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 01:44:23,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-07-12 01:44:23,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074888247] [2022-07-12 01:44:23,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:44:23,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:44:23,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:44:23,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:44:23,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:44:23,264 INFO L87 Difference]: Start difference. First operand 246645 states and 289828 transitions. Second operand has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:44:33,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:44:33,048 INFO L93 Difference]: Finished difference Result 594336 states and 710526 transitions. [2022-07-12 01:44:33,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:44:33,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 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 1170 [2022-07-12 01:44:33,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:44:33,692 INFO L225 Difference]: With dead ends: 594336 [2022-07-12 01:44:33,692 INFO L226 Difference]: Without dead ends: 350423 [2022-07-12 01:44:33,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1175 GetRequests, 1171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:44:33,780 INFO L413 NwaCegarLoop]: 2655 mSDtfsCounter, 1564 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 5309 mSolverCounterSat, 952 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 6261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 952 IncrementalHoareTripleChecker+Valid, 5309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:44:33,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1564 Valid, 2759 Invalid, 6261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [952 Valid, 5309 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-07-12 01:44:34,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350423 states. [2022-07-12 01:44:38,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350423 to 343562. [2022-07-12 01:44:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343562 states, 343561 states have (on average 1.1916370018715745) internal successors, (409400), 343561 states have internal predecessors, (409400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:44:39,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343562 states to 343562 states and 409400 transitions. [2022-07-12 01:44:39,417 INFO L78 Accepts]: Start accepts. Automaton has 343562 states and 409400 transitions. Word has length 1170 [2022-07-12 01:44:39,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:44:39,418 INFO L495 AbstractCegarLoop]: Abstraction has 343562 states and 409400 transitions. [2022-07-12 01:44:39,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:44:39,419 INFO L276 IsEmpty]: Start isEmpty. Operand 343562 states and 409400 transitions. [2022-07-12 01:44:39,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1186 [2022-07-12 01:44:39,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:44:39,438 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:44:39,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 01:44:39,639 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,SelfDestructingSolverStorable11 [2022-07-12 01:44:39,639 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:44:39,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:44:39,640 INFO L85 PathProgramCache]: Analyzing trace with hash 499489197, now seen corresponding path program 1 times [2022-07-12 01:44:39,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:44:39,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235803793] [2022-07-12 01:44:39,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:44:39,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:44:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:44:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1897 backedges. 1252 proven. 0 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2022-07-12 01:44:40,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:44:40,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235803793] [2022-07-12 01:44:40,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235803793] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:44:40,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:44:40,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 01:44:40,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197231589] [2022-07-12 01:44:40,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:44:40,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:44:40,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:44:40,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:44:40,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:44:40,103 INFO L87 Difference]: Start difference. First operand 343562 states and 409400 transitions. Second operand has 4 states, 4 states have (on average 191.5) internal successors, (766), 4 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:44:54,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:44:54,788 INFO L93 Difference]: Finished difference Result 960140 states and 1170604 transitions. [2022-07-12 01:44:54,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:44:54,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 191.5) internal successors, (766), 4 states have internal predecessors, (766), 0 states have call successors, (0), 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 1185 [2022-07-12 01:44:54,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:44:56,215 INFO L225 Difference]: With dead ends: 960140 [2022-07-12 01:44:56,215 INFO L226 Difference]: Without dead ends: 638426 [2022-07-12 01:44:57,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:44:57,023 INFO L413 NwaCegarLoop]: 828 mSDtfsCounter, 3295 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 6240 mSolverCounterSat, 2858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3295 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 9098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2858 IncrementalHoareTripleChecker+Valid, 6240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:44:57,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3295 Valid, 1045 Invalid, 9098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2858 Valid, 6240 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-07-12 01:44:57,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638426 states. [2022-07-12 01:45:05,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638426 to 616563. [2022-07-12 01:45:05,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616563 states, 616562 states have (on average 1.172798518234987) internal successors, (723103), 616562 states have internal predecessors, (723103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)