./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label02.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 d7b7824f74ab8cbbea36fdaee1d1dc5c7e52c10bcc21a0858c24d31348bf95ad --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:17:56,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:17:56,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:17:56,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:17:56,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:17:56,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:17:56,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:17:56,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:17:56,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:17:56,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:17:56,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:17:56,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:17:56,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:17:56,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:17:56,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:17:56,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:17:56,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:17:56,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:17:56,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:17:56,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:17:56,415 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:17:56,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:17:56,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:17:56,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:17:56,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:17:56,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:17:56,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:17:56,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:17:56,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:17:56,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:17:56,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:17:56,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:17:56,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:17:56,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:17:56,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:17:56,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:17:56,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:17:56,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:17:56,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:17:56,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:17:56,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:17:56,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:17:56,433 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 20:17:56,460 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:17:56,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:17:56,461 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:17:56,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:17:56,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:17:56,461 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:17:56,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:17:56,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:17:56,462 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:17:56,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:17:56,463 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:17:56,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 20:17:56,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:17:56,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:17:56,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:17:56,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:17:56,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:17:56,464 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:17:56,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:17:56,465 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:17:56,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:17:56,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:17:56,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:17:56,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:17:56,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:17:56,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:17:56,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:17:56,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:17:56,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 20:17:56,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 20:17:56,467 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:17:56,467 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:17:56,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:17:56,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b7824f74ab8cbbea36fdaee1d1dc5c7e52c10bcc21a0858c24d31348bf95ad [2022-07-22 20:17:56,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:17:56,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:17:56,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:17:56,662 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:17:56,663 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:17:56,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label02.c [2022-07-22 20:17:56,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d535e70/f32119f15c544c0bb6192318ba072347/FLAGc36045c09 [2022-07-22 20:17:57,285 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:17:57,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label02.c [2022-07-22 20:17:57,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d535e70/f32119f15c544c0bb6192318ba072347/FLAGc36045c09 [2022-07-22 20:17:57,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d535e70/f32119f15c544c0bb6192318ba072347 [2022-07-22 20:17:57,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:17:57,743 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:17:57,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:17:57,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:17:57,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:17:57,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:17:57" (1/1) ... [2022-07-22 20:17:57,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d9cb9c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:17:57, skipping insertion in model container [2022-07-22 20:17:57,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:17:57" (1/1) ... [2022-07-22 20:17:57,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:17:57,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:17:58,063 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/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label02.c[6354,6367] [2022-07-22 20:17:58,098 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/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label02.c[13644,13657] [2022-07-22 20:17:58,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:17:58,586 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:17:58,618 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/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label02.c[6354,6367] [2022-07-22 20:17:58,629 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/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label02.c[13644,13657] [2022-07-22 20:17:58,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:17:58,950 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:17:58,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:17:58 WrapperNode [2022-07-22 20:17:58,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:17:58,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:17:58,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:17:58,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:17:58,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:17:58" (1/1) ... [2022-07-22 20:17:58,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:17:58" (1/1) ... [2022-07-22 20:17:59,196 INFO L137 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4976 [2022-07-22 20:17:59,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:17:59,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:17:59,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:17:59,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:17:59,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:17:58" (1/1) ... [2022-07-22 20:17:59,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:17:58" (1/1) ... [2022-07-22 20:17:59,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:17:58" (1/1) ... [2022-07-22 20:17:59,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:17:58" (1/1) ... [2022-07-22 20:17:59,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:17:58" (1/1) ... [2022-07-22 20:17:59,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:17:58" (1/1) ... [2022-07-22 20:17:59,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:17:58" (1/1) ... [2022-07-22 20:17:59,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:17:59,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:17:59,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:17:59,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:17:59,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:17:58" (1/1) ... [2022-07-22 20:17:59,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:17:59,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:17:59,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 20:17:59,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 20:17:59,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:17:59,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 20:17:59,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:17:59,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:17:59,648 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:17:59,649 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:18:02,328 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:18:02,342 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:18:02,342 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 20:18:02,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:18:02 BoogieIcfgContainer [2022-07-22 20:18:02,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:18:02,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:18:02,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:18:02,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:18:02,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:17:57" (1/3) ... [2022-07-22 20:18:02,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683cab47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:18:02, skipping insertion in model container [2022-07-22 20:18:02,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:17:58" (2/3) ... [2022-07-22 20:18:02,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683cab47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:18:02, skipping insertion in model container [2022-07-22 20:18:02,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:18:02" (3/3) ... [2022-07-22 20:18:02,352 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label02.c [2022-07-22 20:18:02,361 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:18:02,361 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:18:02,404 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:18:02,408 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@1d418617, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4ca76c9d [2022-07-22 20:18:02,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:18:02,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 878 states, 875 states have (on average 1.904) internal successors, (1666), 877 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:02,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-22 20:18:02,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:18:02,420 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] [2022-07-22 20:18:02,420 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:18:02,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:18:02,424 INFO L85 PathProgramCache]: Analyzing trace with hash 975463267, now seen corresponding path program 1 times [2022-07-22 20:18:02,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:18:02,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365604490] [2022-07-22 20:18:02,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:18:02,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:18:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:18:02,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:18:02,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:18:02,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365604490] [2022-07-22 20:18:02,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365604490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:18:02,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:18:02,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 20:18:02,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219509540] [2022-07-22 20:18:02,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:18:02,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 20:18:02,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:18:02,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 20:18:02,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 20:18:02,612 INFO L87 Difference]: Start difference. First operand has 878 states, 875 states have (on average 1.904) internal successors, (1666), 877 states have internal predecessors, (1666), 0 states have call successors, (0), 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 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:02,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:18:02,666 INFO L93 Difference]: Finished difference Result 1734 states and 3292 transitions. [2022-07-22 20:18:02,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 20:18:02,668 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-07-22 20:18:02,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:18:02,681 INFO L225 Difference]: With dead ends: 1734 [2022-07-22 20:18:02,681 INFO L226 Difference]: Without dead ends: 812 [2022-07-22 20:18:02,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 20:18:02,687 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:18:02,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:18:02,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-07-22 20:18:02,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 812. [2022-07-22 20:18:02,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 810 states have (on average 1.8925925925925926) internal successors, (1533), 811 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:02,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1533 transitions. [2022-07-22 20:18:02,734 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1533 transitions. Word has length 26 [2022-07-22 20:18:02,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:18:02,735 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 1533 transitions. [2022-07-22 20:18:02,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:02,735 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1533 transitions. [2022-07-22 20:18:02,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-22 20:18:02,736 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:18:02,736 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] [2022-07-22 20:18:02,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 20:18:02,737 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:18:02,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:18:02,737 INFO L85 PathProgramCache]: Analyzing trace with hash 157814817, now seen corresponding path program 1 times [2022-07-22 20:18:02,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:18:02,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520503593] [2022-07-22 20:18:02,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:18:02,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:18:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:18:02,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:18:02,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:18:02,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520503593] [2022-07-22 20:18:02,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520503593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:18:02,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:18:02,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:18:02,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815382723] [2022-07-22 20:18:02,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:18:02,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:18:02,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:18:02,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:18:02,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:18:02,784 INFO L87 Difference]: Start difference. First operand 812 states and 1533 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:02,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:18:02,852 INFO L93 Difference]: Finished difference Result 888 states and 1649 transitions. [2022-07-22 20:18:02,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 20:18:02,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-07-22 20:18:02,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:18:02,857 INFO L225 Difference]: With dead ends: 888 [2022-07-22 20:18:02,857 INFO L226 Difference]: Without dead ends: 848 [2022-07-22 20:18:02,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:18:02,860 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 58 mSDsluCounter, 4566 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 6095 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:18:02,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 6095 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:18:02,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-07-22 20:18:02,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 812. [2022-07-22 20:18:02,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 810 states have (on average 1.8728395061728396) internal successors, (1517), 811 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:02,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1517 transitions. [2022-07-22 20:18:02,884 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1517 transitions. Word has length 26 [2022-07-22 20:18:02,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:18:02,885 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 1517 transitions. [2022-07-22 20:18:02,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:02,886 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1517 transitions. [2022-07-22 20:18:02,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-22 20:18:02,891 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:18:02,891 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] [2022-07-22 20:18:02,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 20:18:02,892 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:18:02,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:18:02,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1324654887, now seen corresponding path program 1 times [2022-07-22 20:18:02,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:18:02,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506231207] [2022-07-22 20:18:02,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:18:02,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:18:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:18:02,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:18:02,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:18:02,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506231207] [2022-07-22 20:18:02,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506231207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:18:02,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:18:02,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:18:02,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488368187] [2022-07-22 20:18:02,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:18:02,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:18:02,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:18:02,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:18:02,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:18:02,980 INFO L87 Difference]: Start difference. First operand 812 states and 1517 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:03,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:18:03,000 INFO L93 Difference]: Finished difference Result 878 states and 1619 transitions. [2022-07-22 20:18:03,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:18:03,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-07-22 20:18:03,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:18:03,006 INFO L225 Difference]: With dead ends: 878 [2022-07-22 20:18:03,006 INFO L226 Difference]: Without dead ends: 842 [2022-07-22 20:18:03,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:18:03,011 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1485 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:18:03,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1613 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:18:03,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-07-22 20:18:03,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 840. [2022-07-22 20:18:03,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 838 states have (on average 1.8627684964200477) internal successors, (1561), 839 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:03,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1561 transitions. [2022-07-22 20:18:03,024 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1561 transitions. Word has length 41 [2022-07-22 20:18:03,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:18:03,025 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 1561 transitions. [2022-07-22 20:18:03,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:03,025 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1561 transitions. [2022-07-22 20:18:03,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-22 20:18:03,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:18:03,028 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] [2022-07-22 20:18:03,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 20:18:03,028 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:18:03,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:18:03,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1376027727, now seen corresponding path program 1 times [2022-07-22 20:18:03,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:18:03,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037553164] [2022-07-22 20:18:03,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:18:03,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:18:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:18:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:18:03,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:18:03,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037553164] [2022-07-22 20:18:03,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037553164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:18:03,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:18:03,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:18:03,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767216604] [2022-07-22 20:18:03,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:18:03,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:18:03,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:18:03,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:18:03,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:18:03,108 INFO L87 Difference]: Start difference. First operand 840 states and 1561 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:03,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:18:03,192 INFO L93 Difference]: Finished difference Result 1224 states and 2161 transitions. [2022-07-22 20:18:03,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:18:03,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-07-22 20:18:03,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:18:03,198 INFO L225 Difference]: With dead ends: 1224 [2022-07-22 20:18:03,198 INFO L226 Difference]: Without dead ends: 1160 [2022-07-22 20:18:03,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:18:03,199 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 4709 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4709 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:18:03,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4709 Valid, 1779 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:18:03,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-07-22 20:18:03,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 902. [2022-07-22 20:18:03,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 900 states have (on average 1.84) internal successors, (1656), 901 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:03,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1656 transitions. [2022-07-22 20:18:03,218 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1656 transitions. Word has length 41 [2022-07-22 20:18:03,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:18:03,218 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 1656 transitions. [2022-07-22 20:18:03,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:03,218 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1656 transitions. [2022-07-22 20:18:03,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-22 20:18:03,219 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:18:03,219 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] [2022-07-22 20:18:03,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 20:18:03,220 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:18:03,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:18:03,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1902982177, now seen corresponding path program 1 times [2022-07-22 20:18:03,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:18:03,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591949231] [2022-07-22 20:18:03,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:18:03,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:18:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:18:03,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:18:03,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:18:03,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591949231] [2022-07-22 20:18:03,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591949231] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:18:03,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:18:03,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:18:03,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456719482] [2022-07-22 20:18:03,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:18:03,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:18:03,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:18:03,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:18:03,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:18:03,250 INFO L87 Difference]: Start difference. First operand 902 states and 1656 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:03,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:18:03,301 INFO L93 Difference]: Finished difference Result 1089 states and 1943 transitions. [2022-07-22 20:18:03,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:18:03,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-07-22 20:18:03,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:18:03,304 INFO L225 Difference]: With dead ends: 1089 [2022-07-22 20:18:03,304 INFO L226 Difference]: Without dead ends: 963 [2022-07-22 20:18:03,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:18:03,305 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 1469 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:18:03,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 1565 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:18:03,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-07-22 20:18:03,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 961. [2022-07-22 20:18:03,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 959 states have (on average 1.8185610010427529) internal successors, (1744), 960 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:03,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1744 transitions. [2022-07-22 20:18:03,323 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1744 transitions. Word has length 43 [2022-07-22 20:18:03,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:18:03,324 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1744 transitions. [2022-07-22 20:18:03,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:03,324 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1744 transitions. [2022-07-22 20:18:03,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-22 20:18:03,325 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:18:03,325 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] [2022-07-22 20:18:03,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 20:18:03,325 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:18:03,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:18:03,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1836488665, now seen corresponding path program 1 times [2022-07-22 20:18:03,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:18:03,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162846856] [2022-07-22 20:18:03,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:18:03,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:18:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:18:03,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:18:03,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:18:03,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162846856] [2022-07-22 20:18:03,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162846856] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:18:03,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:18:03,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:18:03,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673584104] [2022-07-22 20:18:03,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:18:03,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:18:03,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:18:03,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:18:03,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:18:03,418 INFO L87 Difference]: Start difference. First operand 961 states and 1744 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:03,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:18:03,504 INFO L93 Difference]: Finished difference Result 1146 states and 2026 transitions. [2022-07-22 20:18:03,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 20:18:03,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-07-22 20:18:03,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:18:03,508 INFO L225 Difference]: With dead ends: 1146 [2022-07-22 20:18:03,508 INFO L226 Difference]: Without dead ends: 963 [2022-07-22 20:18:03,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:18:03,509 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 1528 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:18:03,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 1685 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:18:03,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-07-22 20:18:03,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 961. [2022-07-22 20:18:03,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 959 states have (on average 1.8154327424400416) internal successors, (1741), 960 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:03,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1741 transitions. [2022-07-22 20:18:03,528 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1741 transitions. Word has length 43 [2022-07-22 20:18:03,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:18:03,528 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1741 transitions. [2022-07-22 20:18:03,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:03,529 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1741 transitions. [2022-07-22 20:18:03,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-22 20:18:03,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:18:03,529 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] [2022-07-22 20:18:03,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 20:18:03,530 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:18:03,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:18:03,530 INFO L85 PathProgramCache]: Analyzing trace with hash -47574589, now seen corresponding path program 1 times [2022-07-22 20:18:03,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:18:03,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450379976] [2022-07-22 20:18:03,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:18:03,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:18:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:18:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:18:03,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:18:03,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450379976] [2022-07-22 20:18:03,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450379976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:18:03,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:18:03,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:18:03,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189287864] [2022-07-22 20:18:03,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:18:03,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:18:03,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:18:03,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:18:03,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:18:03,572 INFO L87 Difference]: Start difference. First operand 961 states and 1741 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:03,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:18:03,600 INFO L93 Difference]: Finished difference Result 1291 states and 2237 transitions. [2022-07-22 20:18:03,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:18:03,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-07-22 20:18:03,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:18:03,604 INFO L225 Difference]: With dead ends: 1291 [2022-07-22 20:18:03,604 INFO L226 Difference]: Without dead ends: 1108 [2022-07-22 20:18:03,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:18:03,606 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 1477 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:18:03,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1603 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:18:03,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2022-07-22 20:18:03,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1106. [2022-07-22 20:18:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1104 states have (on average 1.7681159420289856) internal successors, (1952), 1105 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:03,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1952 transitions. [2022-07-22 20:18:03,631 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1952 transitions. Word has length 43 [2022-07-22 20:18:03,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:18:03,631 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1952 transitions. [2022-07-22 20:18:03,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:03,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1952 transitions. [2022-07-22 20:18:03,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-22 20:18:03,632 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:18:03,632 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] [2022-07-22 20:18:03,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 20:18:03,632 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:18:03,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:18:03,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1199933027, now seen corresponding path program 1 times [2022-07-22 20:18:03,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:18:03,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151314785] [2022-07-22 20:18:03,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:18:03,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:18:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:18:03,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:18:03,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:18:03,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151314785] [2022-07-22 20:18:03,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151314785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:18:03,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:18:03,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:18:03,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272966500] [2022-07-22 20:18:03,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:18:03,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:18:03,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:18:03,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:18:03,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:18:03,666 INFO L87 Difference]: Start difference. First operand 1106 states and 1952 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:03,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:18:03,703 INFO L93 Difference]: Finished difference Result 1690 states and 2810 transitions. [2022-07-22 20:18:03,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:18:03,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-07-22 20:18:03,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:18:03,708 INFO L225 Difference]: With dead ends: 1690 [2022-07-22 20:18:03,708 INFO L226 Difference]: Without dead ends: 1362 [2022-07-22 20:18:03,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:18:03,709 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 1481 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:18:03,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1612 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:18:03,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2022-07-22 20:18:03,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1360. [2022-07-22 20:18:03,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1358 states have (on average 1.6995581737849779) internal successors, (2308), 1359 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:03,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 2308 transitions. [2022-07-22 20:18:03,749 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 2308 transitions. Word has length 43 [2022-07-22 20:18:03,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:18:03,749 INFO L495 AbstractCegarLoop]: Abstraction has 1360 states and 2308 transitions. [2022-07-22 20:18:03,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:03,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 2308 transitions. [2022-07-22 20:18:03,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-22 20:18:03,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:18:03,750 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] [2022-07-22 20:18:03,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 20:18:03,750 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:18:03,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:18:03,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1511296967, now seen corresponding path program 1 times [2022-07-22 20:18:03,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:18:03,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715466706] [2022-07-22 20:18:03,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:18:03,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:18:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:18:03,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:18:03,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:18:03,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715466706] [2022-07-22 20:18:03,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715466706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:18:03,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:18:03,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:18:03,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467468686] [2022-07-22 20:18:03,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:18:03,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:18:03,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:18:03,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:18:03,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:18:03,844 INFO L87 Difference]: Start difference. First operand 1360 states and 2308 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:03,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:18:03,997 INFO L93 Difference]: Finished difference Result 1883 states and 3036 transitions. [2022-07-22 20:18:03,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:18:03,997 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-07-22 20:18:03,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:18:04,004 INFO L225 Difference]: With dead ends: 1883 [2022-07-22 20:18:04,004 INFO L226 Difference]: Without dead ends: 1881 [2022-07-22 20:18:04,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-07-22 20:18:04,006 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 331 mSDsluCounter, 8972 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 10503 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:18:04,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 10503 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:18:04,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2022-07-22 20:18:04,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1408. [2022-07-22 20:18:04,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1406 states have (on average 1.6728307254623045) internal successors, (2352), 1407 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:04,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 2352 transitions. [2022-07-22 20:18:04,060 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 2352 transitions. Word has length 44 [2022-07-22 20:18:04,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:18:04,060 INFO L495 AbstractCegarLoop]: Abstraction has 1408 states and 2352 transitions. [2022-07-22 20:18:04,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:04,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 2352 transitions. [2022-07-22 20:18:04,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-22 20:18:04,062 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:18:04,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:18:04,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 20:18:04,062 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:18:04,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:18:04,063 INFO L85 PathProgramCache]: Analyzing trace with hash -523945775, now seen corresponding path program 1 times [2022-07-22 20:18:04,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:18:04,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253738056] [2022-07-22 20:18:04,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:18:04,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:18:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:18:04,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:18:04,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:18:04,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253738056] [2022-07-22 20:18:04,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253738056] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:18:04,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:18:04,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:18:04,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096507887] [2022-07-22 20:18:04,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:18:04,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 20:18:04,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:18:04,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 20:18:04,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 20:18:04,123 INFO L87 Difference]: Start difference. First operand 1408 states and 2352 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:08,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:18:08,911 INFO L93 Difference]: Finished difference Result 3663 states and 6661 transitions. [2022-07-22 20:18:08,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 20:18:08,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-07-22 20:18:08,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:18:08,919 INFO L225 Difference]: With dead ends: 3663 [2022-07-22 20:18:08,919 INFO L226 Difference]: Without dead ends: 2910 [2022-07-22 20:18:08,920 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 [2022-07-22 20:18:08,920 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 2335 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2335 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:18:08,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2335 Valid, 771 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1161 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-22 20:18:08,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2022-07-22 20:18:08,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2910. [2022-07-22 20:18:08,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2910 states, 2908 states have (on average 1.5357634112792298) internal successors, (4466), 2909 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:08,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 4466 transitions. [2022-07-22 20:18:08,980 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 4466 transitions. Word has length 63 [2022-07-22 20:18:08,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:18:08,980 INFO L495 AbstractCegarLoop]: Abstraction has 2910 states and 4466 transitions. [2022-07-22 20:18:08,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:08,980 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 4466 transitions. [2022-07-22 20:18:08,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-22 20:18:08,981 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:18:08,981 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 20:18:08,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 20:18:08,982 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:18:08,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:18:08,982 INFO L85 PathProgramCache]: Analyzing trace with hash -213997176, now seen corresponding path program 1 times [2022-07-22 20:18:08,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:18:08,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698579848] [2022-07-22 20:18:08,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:18:08,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:18:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:18:09,028 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 20:18:09,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:18:09,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698579848] [2022-07-22 20:18:09,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698579848] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:18:09,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:18:09,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:18:09,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044622131] [2022-07-22 20:18:09,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:18:09,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:18:09,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:18:09,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:18:09,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:18:09,030 INFO L87 Difference]: Start difference. First operand 2910 states and 4466 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:09,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:18:09,183 INFO L93 Difference]: Finished difference Result 4938 states and 7314 transitions. [2022-07-22 20:18:09,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 20:18:09,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 64 [2022-07-22 20:18:09,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:18:09,196 INFO L225 Difference]: With dead ends: 4938 [2022-07-22 20:18:09,196 INFO L226 Difference]: Without dead ends: 4308 [2022-07-22 20:18:09,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:18:09,199 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 3075 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3075 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:18:09,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3075 Valid, 3177 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:18:09,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4308 states. [2022-07-22 20:18:09,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4308 to 3538. [2022-07-22 20:18:09,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3536 states have (on average 1.5107466063348416) internal successors, (5342), 3537 states have internal predecessors, (5342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:09,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 5342 transitions. [2022-07-22 20:18:09,310 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 5342 transitions. Word has length 64 [2022-07-22 20:18:09,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:18:09,310 INFO L495 AbstractCegarLoop]: Abstraction has 3538 states and 5342 transitions. [2022-07-22 20:18:09,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:09,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 5342 transitions. [2022-07-22 20:18:09,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-22 20:18:09,311 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:18:09,311 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 20:18:09,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 20:18:09,312 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:18:09,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:18:09,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1033510440, now seen corresponding path program 1 times [2022-07-22 20:18:09,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:18:09,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998190535] [2022-07-22 20:18:09,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:18:09,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:18:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:18:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 20:18:09,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:18:09,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998190535] [2022-07-22 20:18:09,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998190535] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:18:09,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:18:09,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:18:09,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317663731] [2022-07-22 20:18:09,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:18:09,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:18:09,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:18:09,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:18:09,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:18:09,356 INFO L87 Difference]: Start difference. First operand 3538 states and 5342 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:09,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:18:09,553 INFO L93 Difference]: Finished difference Result 5566 states and 8190 transitions. [2022-07-22 20:18:09,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 20:18:09,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 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 64 [2022-07-22 20:18:09,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:18:09,565 INFO L225 Difference]: With dead ends: 5566 [2022-07-22 20:18:09,565 INFO L226 Difference]: Without dead ends: 4936 [2022-07-22 20:18:09,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:18:09,567 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 3067 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3067 SdHoareTripleChecker+Valid, 3203 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:18:09,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3067 Valid, 3203 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:18:09,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4936 states. [2022-07-22 20:18:09,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4936 to 4482. [2022-07-22 20:18:09,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4482 states, 4480 states have (on average 1.4834821428571427) internal successors, (6646), 4481 states have internal predecessors, (6646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:09,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 6646 transitions. [2022-07-22 20:18:09,724 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 6646 transitions. Word has length 64 [2022-07-22 20:18:09,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:18:09,725 INFO L495 AbstractCegarLoop]: Abstraction has 4482 states and 6646 transitions. [2022-07-22 20:18:09,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:09,725 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 6646 transitions. [2022-07-22 20:18:09,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-22 20:18:09,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:18:09,726 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 20:18:09,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 20:18:09,726 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:18:09,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:18:09,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1792023874, now seen corresponding path program 1 times [2022-07-22 20:18:09,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:18:09,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152626152] [2022-07-22 20:18:09,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:18:09,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:18:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:18:09,771 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 20:18:09,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:18:09,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152626152] [2022-07-22 20:18:09,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152626152] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:18:09,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:18:09,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:18:09,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358750904] [2022-07-22 20:18:09,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:18:09,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:18:09,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:18:09,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:18:09,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:18:09,773 INFO L87 Difference]: Start difference. First operand 4482 states and 6646 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:09,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:18:09,961 INFO L93 Difference]: Finished difference Result 5834 states and 8570 transitions. [2022-07-22 20:18:09,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 20:18:09,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 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 64 [2022-07-22 20:18:09,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:18:09,975 INFO L225 Difference]: With dead ends: 5834 [2022-07-22 20:18:09,978 INFO L226 Difference]: Without dead ends: 5384 [2022-07-22 20:18:09,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:18:09,981 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 3066 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3066 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:18:09,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3066 Valid, 3181 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:18:09,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5384 states. [2022-07-22 20:18:10,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5384 to 4930. [2022-07-22 20:18:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4930 states, 4928 states have (on average 1.4768668831168832) internal successors, (7278), 4929 states have internal predecessors, (7278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:10,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4930 states to 4930 states and 7278 transitions. [2022-07-22 20:18:10,235 INFO L78 Accepts]: Start accepts. Automaton has 4930 states and 7278 transitions. Word has length 64 [2022-07-22 20:18:10,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:18:10,236 INFO L495 AbstractCegarLoop]: Abstraction has 4930 states and 7278 transitions. [2022-07-22 20:18:10,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:10,236 INFO L276 IsEmpty]: Start isEmpty. Operand 4930 states and 7278 transitions. [2022-07-22 20:18:10,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:18:10,240 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:18:10,240 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:18:10,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 20:18:10,241 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:18:10,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:18:10,241 INFO L85 PathProgramCache]: Analyzing trace with hash 322769619, now seen corresponding path program 1 times [2022-07-22 20:18:10,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:18:10,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844614079] [2022-07-22 20:18:10,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:18:10,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:18:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:18:10,275 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:18:10,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:18:10,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844614079] [2022-07-22 20:18:10,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844614079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:18:10,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:18:10,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:18:10,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084752027] [2022-07-22 20:18:10,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:18:10,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:18:10,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:18:10,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:18:10,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:18:10,277 INFO L87 Difference]: Start difference. First operand 4930 states and 7278 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:10,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:18:10,453 INFO L93 Difference]: Finished difference Result 7582 states and 10980 transitions. [2022-07-22 20:18:10,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:18:10,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-07-22 20:18:10,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:18:10,466 INFO L225 Difference]: With dead ends: 7582 [2022-07-22 20:18:10,466 INFO L226 Difference]: Without dead ends: 4932 [2022-07-22 20:18:10,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:18:10,470 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 33 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:18:10,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3042 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:18:10,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4932 states. [2022-07-22 20:18:10,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4932 to 4930. [2022-07-22 20:18:10,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4930 states, 4928 states have (on average 1.4667207792207793) internal successors, (7228), 4929 states have internal predecessors, (7228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:10,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4930 states to 4930 states and 7228 transitions. [2022-07-22 20:18:10,641 INFO L78 Accepts]: Start accepts. Automaton has 4930 states and 7228 transitions. Word has length 65 [2022-07-22 20:18:10,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:18:10,641 INFO L495 AbstractCegarLoop]: Abstraction has 4930 states and 7228 transitions. [2022-07-22 20:18:10,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:10,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4930 states and 7228 transitions. [2022-07-22 20:18:10,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:18:10,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:18:10,643 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 20:18:10,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 20:18:10,643 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:18:10,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:18:10,644 INFO L85 PathProgramCache]: Analyzing trace with hash 235650825, now seen corresponding path program 1 times [2022-07-22 20:18:10,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:18:10,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330516741] [2022-07-22 20:18:10,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:18:10,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:18:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:18:10,669 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:18:10,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:18:10,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330516741] [2022-07-22 20:18:10,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330516741] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:18:10,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:18:10,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:18:10,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102009022] [2022-07-22 20:18:10,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:18:10,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:18:10,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:18:10,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:18:10,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:18:10,671 INFO L87 Difference]: Start difference. First operand 4930 states and 7228 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:10,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:18:10,777 INFO L93 Difference]: Finished difference Result 6258 states and 9055 transitions. [2022-07-22 20:18:10,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:18:10,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-07-22 20:18:10,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:18:10,783 INFO L225 Difference]: With dead ends: 6258 [2022-07-22 20:18:10,783 INFO L226 Difference]: Without dead ends: 3608 [2022-07-22 20:18:10,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:18:10,785 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 29 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3027 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:18:10,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3027 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:18:10,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3608 states. [2022-07-22 20:18:10,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3608 to 3606. [2022-07-22 20:18:10,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3604 states have (on average 1.4922308546059933) internal successors, (5378), 3605 states have internal predecessors, (5378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:10,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 5378 transitions. [2022-07-22 20:18:10,875 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 5378 transitions. Word has length 65 [2022-07-22 20:18:10,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:18:10,875 INFO L495 AbstractCegarLoop]: Abstraction has 3606 states and 5378 transitions. [2022-07-22 20:18:10,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:10,875 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 5378 transitions. [2022-07-22 20:18:10,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:18:10,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:18:10,876 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:18:10,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 20:18:10,876 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:18:10,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:18:10,877 INFO L85 PathProgramCache]: Analyzing trace with hash -883624385, now seen corresponding path program 1 times [2022-07-22 20:18:10,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:18:10,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898885989] [2022-07-22 20:18:10,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:18:10,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:18:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:18:11,038 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:18:11,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:18:11,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898885989] [2022-07-22 20:18:11,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898885989] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:18:11,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642971081] [2022-07-22 20:18:11,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:18:11,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:18:11,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:18:11,043 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:18:11,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 20:18:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:18:11,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 20:18:11,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:18:11,277 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 20:18:11,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 20:18:11,434 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 20:18:11,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642971081] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 20:18:11,435 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 20:18:11,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 4] total 20 [2022-07-22 20:18:11,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003615126] [2022-07-22 20:18:11,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 20:18:11,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 20:18:11,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:18:11,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 20:18:11,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-07-22 20:18:11,436 INFO L87 Difference]: Start difference. First operand 3606 states and 5378 transitions. Second operand has 20 states, 20 states have (on average 8.9) internal successors, (178), 20 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:15,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:18:15,474 INFO L93 Difference]: Finished difference Result 16572 states and 22693 transitions. [2022-07-22 20:18:15,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-07-22 20:18:15,474 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.9) internal successors, (178), 20 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-07-22 20:18:15,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:18:15,498 INFO L225 Difference]: With dead ends: 16572 [2022-07-22 20:18:15,498 INFO L226 Difference]: Without dead ends: 15246 [2022-07-22 20:18:15,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6647 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2917, Invalid=13853, Unknown=0, NotChecked=0, Total=16770 [2022-07-22 20:18:15,507 INFO L413 NwaCegarLoop]: 1592 mSDtfsCounter, 15441 mSDsluCounter, 8585 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15441 SdHoareTripleChecker+Valid, 10177 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:18:15,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15441 Valid, 10177 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 20:18:15,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15246 states. [2022-07-22 20:18:16,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15246 to 8768. [2022-07-22 20:18:16,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8768 states, 8766 states have (on average 1.380333105179101) internal successors, (12100), 8767 states have internal predecessors, (12100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:16,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8768 states to 8768 states and 12100 transitions. [2022-07-22 20:18:16,071 INFO L78 Accepts]: Start accepts. Automaton has 8768 states and 12100 transitions. Word has length 65 [2022-07-22 20:18:16,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:18:16,072 INFO L495 AbstractCegarLoop]: Abstraction has 8768 states and 12100 transitions. [2022-07-22 20:18:16,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.9) internal successors, (178), 20 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:16,072 INFO L276 IsEmpty]: Start isEmpty. Operand 8768 states and 12100 transitions. [2022-07-22 20:18:16,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:18:16,073 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:18:16,073 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:18:16,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 20:18:16,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-22 20:18:16,290 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:18:16,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:18:16,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1505794396, now seen corresponding path program 1 times [2022-07-22 20:18:16,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:18:16,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15776628] [2022-07-22 20:18:16,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:18:16,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:18:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:18:16,417 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:18:16,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:18:16,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15776628] [2022-07-22 20:18:16,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15776628] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:18:16,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055887198] [2022-07-22 20:18:16,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:18:16,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:18:16,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:18:16,419 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:18:16,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 20:18:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:18:16,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 20:18:16,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:18:16,839 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:18:16,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 20:18:17,192 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:18:17,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055887198] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 20:18:17,192 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 20:18:17,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 21 [2022-07-22 20:18:17,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680363955] [2022-07-22 20:18:17,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 20:18:17,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 20:18:17,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:18:17,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 20:18:17,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2022-07-22 20:18:17,194 INFO L87 Difference]: Start difference. First operand 8768 states and 12100 transitions. Second operand has 22 states, 22 states have (on average 6.590909090909091) internal successors, (145), 21 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:19,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:18:19,340 INFO L93 Difference]: Finished difference Result 29635 states and 39119 transitions. [2022-07-22 20:18:19,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 20:18:19,340 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.590909090909091) internal successors, (145), 21 states have internal predecessors, (145), 0 states have call successors, (0), 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 66 [2022-07-22 20:18:19,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:18:19,379 INFO L225 Difference]: With dead ends: 29635 [2022-07-22 20:18:19,380 INFO L226 Difference]: Without dead ends: 24816 [2022-07-22 20:18:19,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=385, Invalid=1097, Unknown=0, NotChecked=0, Total=1482 [2022-07-22 20:18:19,390 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 9307 mSDsluCounter, 4989 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9307 SdHoareTripleChecker+Valid, 6524 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:18:19,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9307 Valid, 6524 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 20:18:19,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24816 states. [2022-07-22 20:18:20,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24816 to 16479. [2022-07-22 20:18:20,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16479 states, 16477 states have (on average 1.3413849608545245) internal successors, (22102), 16478 states have internal predecessors, (22102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:20,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16479 states to 16479 states and 22102 transitions. [2022-07-22 20:18:20,656 INFO L78 Accepts]: Start accepts. Automaton has 16479 states and 22102 transitions. Word has length 66 [2022-07-22 20:18:20,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:18:20,656 INFO L495 AbstractCegarLoop]: Abstraction has 16479 states and 22102 transitions. [2022-07-22 20:18:20,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.590909090909091) internal successors, (145), 21 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:18:20,657 INFO L276 IsEmpty]: Start isEmpty. Operand 16479 states and 22102 transitions. [2022-07-22 20:18:20,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:18:20,658 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:18:20,658 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:18:20,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 20:18:20,875 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,SelfDestructingSolverStorable16 [2022-07-22 20:18:20,875 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:18:20,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:18:20,876 INFO L85 PathProgramCache]: Analyzing trace with hash 616171932, now seen corresponding path program 1 times [2022-07-22 20:18:20,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:18:20,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973959629] [2022-07-22 20:18:20,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:18:20,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:18:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:18:20,965 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:18:20,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:18:20,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973959629] [2022-07-22 20:18:20,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973959629] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:18:20,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676680800] [2022-07-22 20:18:20,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:18:20,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:18:20,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:18:20,967 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:18:20,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 20:18:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:18:21,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-22 20:18:21,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:18:21,722 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:18:21,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 20:18:22,385 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:18:22,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676680800] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 20:18:22,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 20:18:22,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2022-07-22 20:18:22,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931957355] [2022-07-22 20:18:22,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 20:18:22,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-22 20:18:22,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:18:22,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-22 20:18:22,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=888, Unknown=0, NotChecked=0, Total=992 [2022-07-22 20:18:22,387 INFO L87 Difference]: Start difference. First operand 16479 states and 22102 transitions. Second operand has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:19:28,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:19:28,276 INFO L93 Difference]: Finished difference Result 249794 states and 323095 transitions. [2022-07-22 20:19:28,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 612 states. [2022-07-22 20:19:28,276 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-22 20:19:28,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:19:28,902 INFO L225 Difference]: With dead ends: 249794 [2022-07-22 20:19:28,902 INFO L226 Difference]: Without dead ends: 235595 [2022-07-22 20:19:29,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 639 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208473 ImplicationChecksByTransitivity, 36.9s TimeCoverageRelationStatistics Valid=46191, Invalid=364049, Unknown=0, NotChecked=0, Total=410240 [2022-07-22 20:19:29,006 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 34615 mSDsluCounter, 20094 mSDsCounter, 0 mSdLazyCounter, 2730 mSolverCounterSat, 1962 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34615 SdHoareTripleChecker+Valid, 21730 SdHoareTripleChecker+Invalid, 4692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1962 IncrementalHoareTripleChecker+Valid, 2730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:19:29,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34615 Valid, 21730 Invalid, 4692 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1962 Valid, 2730 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 20:19:29,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235595 states. [2022-07-22 20:19:35,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235595 to 44059. [2022-07-22 20:19:35,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44059 states, 44057 states have (on average 1.3152506979594616) internal successors, (57946), 44058 states have internal predecessors, (57946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:19:35,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44059 states to 44059 states and 57946 transitions. [2022-07-22 20:19:35,749 INFO L78 Accepts]: Start accepts. Automaton has 44059 states and 57946 transitions. Word has length 66 [2022-07-22 20:19:35,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:19:35,749 INFO L495 AbstractCegarLoop]: Abstraction has 44059 states and 57946 transitions. [2022-07-22 20:19:35,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:19:35,749 INFO L276 IsEmpty]: Start isEmpty. Operand 44059 states and 57946 transitions. [2022-07-22 20:19:35,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:19:35,751 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:19:35,751 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:19:35,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 20:19:35,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-22 20:19:35,958 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:19:35,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:19:35,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1486365826, now seen corresponding path program 1 times [2022-07-22 20:19:35,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:19:35,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800108254] [2022-07-22 20:19:35,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:19:35,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:19:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:19:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 20:19:36,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:19:36,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800108254] [2022-07-22 20:19:36,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800108254] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:19:36,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:19:36,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:19:36,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242685349] [2022-07-22 20:19:36,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:19:36,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:19:36,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:19:36,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:19:36,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:19:36,003 INFO L87 Difference]: Start difference. First operand 44059 states and 57946 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:19:39,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:19:39,694 INFO L93 Difference]: Finished difference Result 69904 states and 91413 transitions. [2022-07-22 20:19:39,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 20:19:39,699 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 66 [2022-07-22 20:19:39,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:19:39,730 INFO L225 Difference]: With dead ends: 69904 [2022-07-22 20:19:39,730 INFO L226 Difference]: Without dead ends: 28125 [2022-07-22 20:19:39,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:19:39,752 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 4540 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4540 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:19:39,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4540 Valid, 2977 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:19:39,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28125 states. [2022-07-22 20:19:43,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28125 to 28125. [2022-07-22 20:19:43,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28125 states, 28123 states have (on average 1.2919674287949365) internal successors, (36334), 28124 states have internal predecessors, (36334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:19:43,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28125 states to 28125 states and 36334 transitions. [2022-07-22 20:19:43,243 INFO L78 Accepts]: Start accepts. Automaton has 28125 states and 36334 transitions. Word has length 66 [2022-07-22 20:19:43,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:19:43,243 INFO L495 AbstractCegarLoop]: Abstraction has 28125 states and 36334 transitions. [2022-07-22 20:19:43,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:19:43,244 INFO L276 IsEmpty]: Start isEmpty. Operand 28125 states and 36334 transitions. [2022-07-22 20:19:43,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 20:19:43,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:19:43,244 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:19:43,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 20:19:43,245 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:19:43,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:19:43,245 INFO L85 PathProgramCache]: Analyzing trace with hash 138650479, now seen corresponding path program 1 times [2022-07-22 20:19:43,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:19:43,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716342679] [2022-07-22 20:19:43,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:19:43,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:19:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:19:43,463 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:19:43,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:19:43,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716342679] [2022-07-22 20:19:43,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716342679] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:19:43,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555076125] [2022-07-22 20:19:43,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:19:43,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:19:43,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:19:43,465 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:19:43,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 20:19:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:19:43,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-22 20:19:43,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:19:44,872 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:19:44,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 20:19:46,370 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:19:46,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555076125] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 20:19:46,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 20:19:46,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 19] total 48 [2022-07-22 20:19:46,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999452789] [2022-07-22 20:19:46,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 20:19:46,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-07-22 20:19:46,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:19:46,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-07-22 20:19:46,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1958, Unknown=0, NotChecked=0, Total=2256 [2022-07-22 20:19:46,374 INFO L87 Difference]: Start difference. First operand 28125 states and 36334 transitions. Second operand has 48 states, 48 states have (on average 3.5833333333333335) internal successors, (172), 48 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:20:38,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:20:38,432 INFO L93 Difference]: Finished difference Result 171854 states and 213253 transitions. [2022-07-22 20:20:38,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 368 states. [2022-07-22 20:20:38,432 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.5833333333333335) internal successors, (172), 48 states have internal predecessors, (172), 0 states have call successors, (0), 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 67 [2022-07-22 20:20:38,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:20:38,656 INFO L225 Difference]: With dead ends: 171854 [2022-07-22 20:20:38,656 INFO L226 Difference]: Without dead ends: 153172 [2022-07-22 20:20:38,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 405 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72160 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=17320, Invalid=147922, Unknown=0, NotChecked=0, Total=165242 [2022-07-22 20:20:38,699 INFO L413 NwaCegarLoop]: 2052 mSDtfsCounter, 20370 mSDsluCounter, 35877 mSDsCounter, 0 mSdLazyCounter, 5329 mSolverCounterSat, 733 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20370 SdHoareTripleChecker+Valid, 37929 SdHoareTripleChecker+Invalid, 6062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 733 IncrementalHoareTripleChecker+Valid, 5329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:20:38,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20370 Valid, 37929 Invalid, 6062 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [733 Valid, 5329 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-22 20:20:38,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153172 states. [2022-07-22 20:20:45,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153172 to 37074. [2022-07-22 20:20:45,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37074 states, 37072 states have (on average 1.2822075960293482) internal successors, (47534), 37073 states have internal predecessors, (47534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:20:46,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37074 states to 37074 states and 47534 transitions. [2022-07-22 20:20:46,045 INFO L78 Accepts]: Start accepts. Automaton has 37074 states and 47534 transitions. Word has length 67 [2022-07-22 20:20:46,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:20:46,045 INFO L495 AbstractCegarLoop]: Abstraction has 37074 states and 47534 transitions. [2022-07-22 20:20:46,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.5833333333333335) internal successors, (172), 48 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:20:46,045 INFO L276 IsEmpty]: Start isEmpty. Operand 37074 states and 47534 transitions. [2022-07-22 20:20:46,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 20:20:46,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:20:46,047 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 20:20:46,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 20:20:46,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:20:46,251 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:20:46,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:20:46,251 INFO L85 PathProgramCache]: Analyzing trace with hash -113994759, now seen corresponding path program 1 times [2022-07-22 20:20:46,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:20:46,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310413182] [2022-07-22 20:20:46,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:20:46,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:20:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:20:46,314 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 20:20:46,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:20:46,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310413182] [2022-07-22 20:20:46,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310413182] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:20:46,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:20:46,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:20:46,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638777142] [2022-07-22 20:20:46,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:20:46,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:20:46,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:20:46,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:20:46,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:20:46,316 INFO L87 Difference]: Start difference. First operand 37074 states and 47534 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:20:51,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:20:51,251 INFO L93 Difference]: Finished difference Result 62711 states and 79993 transitions. [2022-07-22 20:20:51,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 20:20:51,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 67 [2022-07-22 20:20:51,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:20:51,291 INFO L225 Difference]: With dead ends: 62711 [2022-07-22 20:20:51,291 INFO L226 Difference]: Without dead ends: 27917 [2022-07-22 20:20:51,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:20:51,311 INFO L413 NwaCegarLoop]: 1490 mSDtfsCounter, 4545 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4545 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:20:51,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4545 Valid, 2952 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:20:51,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27917 states. [2022-07-22 20:20:56,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27917 to 27917. [2022-07-22 20:20:56,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27917 states, 27915 states have (on average 1.275873186458893) internal successors, (35616), 27916 states have internal predecessors, (35616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:20:56,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27917 states to 27917 states and 35616 transitions. [2022-07-22 20:20:56,343 INFO L78 Accepts]: Start accepts. Automaton has 27917 states and 35616 transitions. Word has length 67 [2022-07-22 20:20:56,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:20:56,343 INFO L495 AbstractCegarLoop]: Abstraction has 27917 states and 35616 transitions. [2022-07-22 20:20:56,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:20:56,343 INFO L276 IsEmpty]: Start isEmpty. Operand 27917 states and 35616 transitions. [2022-07-22 20:20:56,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 20:20:56,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:20:56,344 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 20:20:56,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 20:20:56,345 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:20:56,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:20:56,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1235279528, now seen corresponding path program 1 times [2022-07-22 20:20:56,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:20:56,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887188053] [2022-07-22 20:20:56,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:20:56,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:20:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:20:56,363 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:20:56,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:20:56,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887188053] [2022-07-22 20:20:56,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887188053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:20:56,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:20:56,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:20:56,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560797571] [2022-07-22 20:20:56,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:20:56,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:20:56,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:20:56,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:20:56,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:20:56,365 INFO L87 Difference]: Start difference. First operand 27917 states and 35616 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:20:58,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:20:58,228 INFO L93 Difference]: Finished difference Result 36302 states and 45999 transitions. [2022-07-22 20:20:58,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:20:58,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-07-22 20:20:58,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:20:58,240 INFO L225 Difference]: With dead ends: 36302 [2022-07-22 20:20:58,240 INFO L226 Difference]: Without dead ends: 10665 [2022-07-22 20:20:58,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:20:58,252 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 16 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3018 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:20:58,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 3018 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:20:58,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10665 states. [2022-07-22 20:20:59,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10665 to 10084. [2022-07-22 20:20:59,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10084 states, 10082 states have (on average 1.2984526879587384) internal successors, (13091), 10083 states have internal predecessors, (13091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:20:59,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10084 states to 10084 states and 13091 transitions. [2022-07-22 20:20:59,883 INFO L78 Accepts]: Start accepts. Automaton has 10084 states and 13091 transitions. Word has length 68 [2022-07-22 20:20:59,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:20:59,883 INFO L495 AbstractCegarLoop]: Abstraction has 10084 states and 13091 transitions. [2022-07-22 20:20:59,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:20:59,883 INFO L276 IsEmpty]: Start isEmpty. Operand 10084 states and 13091 transitions. [2022-07-22 20:20:59,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 20:20:59,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:20:59,884 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:20:59,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 20:20:59,885 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:20:59,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:20:59,885 INFO L85 PathProgramCache]: Analyzing trace with hash 745122100, now seen corresponding path program 1 times [2022-07-22 20:20:59,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:20:59,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827439425] [2022-07-22 20:20:59,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:20:59,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:20:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:20:59,916 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 20:20:59,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:20:59,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827439425] [2022-07-22 20:20:59,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827439425] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:20:59,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:20:59,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:20:59,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957146708] [2022-07-22 20:20:59,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:20:59,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:20:59,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:20:59,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:20:59,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:20:59,918 INFO L87 Difference]: Start difference. First operand 10084 states and 13091 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:21:01,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:21:01,151 INFO L93 Difference]: Finished difference Result 15022 states and 19073 transitions. [2022-07-22 20:21:01,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 20:21:01,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 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 68 [2022-07-22 20:21:01,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:21:01,159 INFO L225 Difference]: With dead ends: 15022 [2022-07-22 20:21:01,159 INFO L226 Difference]: Without dead ends: 7242 [2022-07-22 20:21:01,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:21:01,164 INFO L413 NwaCegarLoop]: 1490 mSDtfsCounter, 4492 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4492 SdHoareTripleChecker+Valid, 2965 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:21:01,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4492 Valid, 2965 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:21:01,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7242 states. [2022-07-22 20:21:02,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7242 to 7242. [2022-07-22 20:21:02,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7242 states, 7240 states have (on average 1.308011049723757) internal successors, (9470), 7241 states have internal predecessors, (9470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:21:02,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7242 states to 7242 states and 9470 transitions. [2022-07-22 20:21:02,299 INFO L78 Accepts]: Start accepts. Automaton has 7242 states and 9470 transitions. Word has length 68 [2022-07-22 20:21:02,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:21:02,299 INFO L495 AbstractCegarLoop]: Abstraction has 7242 states and 9470 transitions. [2022-07-22 20:21:02,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:21:02,299 INFO L276 IsEmpty]: Start isEmpty. Operand 7242 states and 9470 transitions. [2022-07-22 20:21:02,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 20:21:02,300 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:21:02,300 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 20:21:02,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 20:21:02,301 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:21:02,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:21:02,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1362739138, now seen corresponding path program 1 times [2022-07-22 20:21:02,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:21:02,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813519797] [2022-07-22 20:21:02,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:21:02,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:21:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:21:02,513 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:21:02,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:21:02,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813519797] [2022-07-22 20:21:02,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813519797] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:21:02,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421263159] [2022-07-22 20:21:02,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:21:02,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:21:02,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:21:02,516 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:21:02,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 20:21:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:21:02,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-22 20:21:02,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:21:03,658 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:21:03,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 20:21:04,172 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:21:04,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421263159] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 20:21:04,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 20:21:04,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 28 [2022-07-22 20:21:04,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77217592] [2022-07-22 20:21:04,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 20:21:04,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-22 20:21:04,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:21:04,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-22 20:21:04,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2022-07-22 20:21:04,174 INFO L87 Difference]: Start difference. First operand 7242 states and 9470 transitions. Second operand has 28 states, 28 states have (on average 6.392857142857143) internal successors, (179), 28 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:21:07,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:21:07,952 INFO L93 Difference]: Finished difference Result 12853 states and 15999 transitions. [2022-07-22 20:21:07,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 20:21:07,953 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.392857142857143) internal successors, (179), 28 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-07-22 20:21:07,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:21:07,963 INFO L225 Difference]: With dead ends: 12853 [2022-07-22 20:21:07,964 INFO L226 Difference]: Without dead ends: 10298 [2022-07-22 20:21:07,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=436, Invalid=1634, Unknown=0, NotChecked=0, Total=2070 [2022-07-22 20:21:07,968 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 9395 mSDsluCounter, 14249 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9395 SdHoareTripleChecker+Valid, 15851 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:21:07,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9395 Valid, 15851 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:21:07,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10298 states. [2022-07-22 20:21:09,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10298 to 7512. [2022-07-22 20:21:09,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7512 states, 7510 states have (on average 1.3030625832223701) internal successors, (9786), 7511 states have internal predecessors, (9786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:21:09,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7512 states to 7512 states and 9786 transitions. [2022-07-22 20:21:09,413 INFO L78 Accepts]: Start accepts. Automaton has 7512 states and 9786 transitions. Word has length 69 [2022-07-22 20:21:09,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:21:09,413 INFO L495 AbstractCegarLoop]: Abstraction has 7512 states and 9786 transitions. [2022-07-22 20:21:09,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.392857142857143) internal successors, (179), 28 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:21:09,413 INFO L276 IsEmpty]: Start isEmpty. Operand 7512 states and 9786 transitions. [2022-07-22 20:21:09,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 20:21:09,415 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:21:09,415 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:21:09,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 20:21:09,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-22 20:21:09,632 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:21:09,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:21:09,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1940957519, now seen corresponding path program 1 times [2022-07-22 20:21:09,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:21:09,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579956312] [2022-07-22 20:21:09,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:21:09,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:21:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:21:09,763 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 31 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:21:09,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:21:09,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579956312] [2022-07-22 20:21:09,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579956312] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:21:09,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955353261] [2022-07-22 20:21:09,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:21:09,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:21:09,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:21:09,766 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:21:09,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 20:21:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:21:09,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-22 20:21:09,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:21:10,532 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:21:10,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 20:21:11,536 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 31 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:21:11,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955353261] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 20:21:11,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 20:21:11,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-07-22 20:21:11,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15215280] [2022-07-22 20:21:11,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 20:21:11,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-22 20:21:11,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:21:11,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-22 20:21:11,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2022-07-22 20:21:11,537 INFO L87 Difference]: Start difference. First operand 7512 states and 9786 transitions. Second operand has 29 states, 29 states have (on average 9.620689655172415) internal successors, (279), 28 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:21:15,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:21:15,181 INFO L93 Difference]: Finished difference Result 11419 states and 14461 transitions. [2022-07-22 20:21:15,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 20:21:15,181 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.620689655172415) internal successors, (279), 28 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-07-22 20:21:15,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:21:15,188 INFO L225 Difference]: With dead ends: 11419 [2022-07-22 20:21:15,188 INFO L226 Difference]: Without dead ends: 8041 [2022-07-22 20:21:15,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=456, Invalid=1436, Unknown=0, NotChecked=0, Total=1892 [2022-07-22 20:21:15,191 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 10813 mSDsluCounter, 13784 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10813 SdHoareTripleChecker+Valid, 15314 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:21:15,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10813 Valid, 15314 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 20:21:15,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8041 states. [2022-07-22 20:21:16,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8041 to 7512. [2022-07-22 20:21:16,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7512 states, 7510 states have (on average 1.296671105193076) internal successors, (9738), 7511 states have internal predecessors, (9738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:21:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7512 states to 7512 states and 9738 transitions. [2022-07-22 20:21:16,926 INFO L78 Accepts]: Start accepts. Automaton has 7512 states and 9738 transitions. Word has length 111 [2022-07-22 20:21:16,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:21:16,927 INFO L495 AbstractCegarLoop]: Abstraction has 7512 states and 9738 transitions. [2022-07-22 20:21:16,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.620689655172415) internal successors, (279), 28 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:21:16,927 INFO L276 IsEmpty]: Start isEmpty. Operand 7512 states and 9738 transitions. [2022-07-22 20:21:16,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 20:21:16,928 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:21:16,928 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 20:21:16,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 20:21:17,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:21:17,129 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:21:17,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:21:17,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1600436991, now seen corresponding path program 1 times [2022-07-22 20:21:17,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:21:17,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656417538] [2022-07-22 20:21:17,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:21:17,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:21:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:21:17,330 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 34 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:21:17,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:21:17,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656417538] [2022-07-22 20:21:17,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656417538] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:21:17,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266059402] [2022-07-22 20:21:17,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:21:17,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:21:17,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:21:17,332 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:21:17,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 20:21:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:21:17,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-22 20:21:17,428 INFO L286 TraceCheckSpWp]: Computing forward predicates...