./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/psyco/psyco_io_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/psyco/psyco_io_1.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 4f9f01bde8fda2c75630f127009f2a9b60883250862a9d96b52c34a46b69c1e5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 13:37:55,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 13:37:55,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 13:37:55,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 13:37:55,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 13:37:55,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 13:37:55,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 13:37:55,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 13:37:55,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 13:37:55,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 13:37:55,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 13:37:55,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 13:37:55,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 13:37:55,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 13:37:55,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 13:37:55,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 13:37:55,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 13:37:55,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 13:37:55,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 13:37:55,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 13:37:55,483 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 13:37:55,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 13:37:55,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 13:37:55,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 13:37:55,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 13:37:55,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 13:37:55,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 13:37:55,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 13:37:55,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 13:37:55,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 13:37:55,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 13:37:55,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 13:37:55,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 13:37:55,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 13:37:55,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 13:37:55,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 13:37:55,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 13:37:55,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 13:37:55,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 13:37:55,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 13:37:55,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 13:37:55,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 13:37:55,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 13:37:55,521 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 13:37:55,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 13:37:55,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 13:37:55,522 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 13:37:55,522 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 13:37:55,523 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 13:37:55,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 13:37:55,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 13:37:55,523 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 13:37:55,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 13:37:55,524 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 13:37:55,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 13:37:55,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 13:37:55,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 13:37:55,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 13:37:55,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 13:37:55,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 13:37:55,525 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 13:37:55,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 13:37:55,526 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 13:37:55,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 13:37:55,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 13:37:55,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 13:37:55,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 13:37:55,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 13:37:55,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 13:37:55,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 13:37:55,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 13:37:55,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 13:37:55,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 13:37:55,528 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 13:37:55,528 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 13:37:55,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 13:37:55,528 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f9f01bde8fda2c75630f127009f2a9b60883250862a9d96b52c34a46b69c1e5 [2022-07-13 13:37:55,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 13:37:55,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 13:37:55,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 13:37:55,729 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 13:37:55,730 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 13:37:55,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_io_1.c [2022-07-13 13:37:55,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9fee9815/e30ae451971d4d22a16577fe9b51ded4/FLAGe3056a74e [2022-07-13 13:37:56,144 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 13:37:56,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_io_1.c [2022-07-13 13:37:56,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9fee9815/e30ae451971d4d22a16577fe9b51ded4/FLAGe3056a74e [2022-07-13 13:37:56,158 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9fee9815/e30ae451971d4d22a16577fe9b51ded4 [2022-07-13 13:37:56,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 13:37:56,162 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 13:37:56,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 13:37:56,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 13:37:56,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 13:37:56,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 01:37:56" (1/1) ... [2022-07-13 13:37:56,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28683e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:37:56, skipping insertion in model container [2022-07-13 13:37:56,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 01:37:56" (1/1) ... [2022-07-13 13:37:56,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 13:37:56,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 13:37:56,309 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/psyco/psyco_io_1.c[11478,11491] [2022-07-13 13:37:56,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 13:37:56,316 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 13:37:56,336 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/psyco/psyco_io_1.c[11478,11491] [2022-07-13 13:37:56,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 13:37:56,347 INFO L208 MainTranslator]: Completed translation [2022-07-13 13:37:56,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:37:56 WrapperNode [2022-07-13 13:37:56,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 13:37:56,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 13:37:56,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 13:37:56,349 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 13:37:56,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:37:56" (1/1) ... [2022-07-13 13:37:56,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:37:56" (1/1) ... [2022-07-13 13:37:56,373 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 258 [2022-07-13 13:37:56,373 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 13:37:56,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 13:37:56,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 13:37:56,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 13:37:56,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:37:56" (1/1) ... [2022-07-13 13:37:56,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:37:56" (1/1) ... [2022-07-13 13:37:56,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:37:56" (1/1) ... [2022-07-13 13:37:56,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:37:56" (1/1) ... [2022-07-13 13:37:56,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:37:56" (1/1) ... [2022-07-13 13:37:56,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:37:56" (1/1) ... [2022-07-13 13:37:56,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:37:56" (1/1) ... [2022-07-13 13:37:56,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 13:37:56,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 13:37:56,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 13:37:56,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 13:37:56,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:37:56" (1/1) ... [2022-07-13 13:37:56,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 13:37:56,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 13:37:56,426 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 13:37:56,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 13:37:56,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 13:37:56,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 13:37:56,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 13:37:56,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 13:37:56,495 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 13:37:56,496 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 13:37:56,642 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 13:37:56,646 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 13:37:56,646 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-13 13:37:56,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 01:37:56 BoogieIcfgContainer [2022-07-13 13:37:56,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 13:37:56,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 13:37:56,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 13:37:56,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 13:37:56,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 01:37:56" (1/3) ... [2022-07-13 13:37:56,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b45f149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 01:37:56, skipping insertion in model container [2022-07-13 13:37:56,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:37:56" (2/3) ... [2022-07-13 13:37:56,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b45f149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 01:37:56, skipping insertion in model container [2022-07-13 13:37:56,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 01:37:56" (3/3) ... [2022-07-13 13:37:56,653 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2022-07-13 13:37:56,662 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 13:37:56,662 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 13:37:56,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 13:37:56,694 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@7a5e59ef, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@64c86347 [2022-07-13 13:37:56,695 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 13:37:56,697 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 66 states have (on average 1.9242424242424243) internal successors, (127), 67 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:37:56,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 13:37:56,701 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:37:56,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:37:56,702 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:37:56,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:37:56,705 INFO L85 PathProgramCache]: Analyzing trace with hash 352571312, now seen corresponding path program 1 times [2022-07-13 13:37:56,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:37:56,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688072646] [2022-07-13 13:37:56,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:37:56,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:37:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:37:56,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 13:37:56,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:37:56,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688072646] [2022-07-13 13:37:56,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688072646] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:37:56,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:37:56,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 13:37:56,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453302641] [2022-07-13 13:37:56,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:37:56,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 13:37:56,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:37:56,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 13:37:56,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 13:37:56,879 INFO L87 Difference]: Start difference. First operand has 68 states, 66 states have (on average 1.9242424242424243) internal successors, (127), 67 states have internal predecessors, (127), 0 states have call successors, (0), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:37:56,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:37:56,907 INFO L93 Difference]: Finished difference Result 130 states and 244 transitions. [2022-07-13 13:37:56,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 13:37:56,909 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-07-13 13:37:56,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:37:56,916 INFO L225 Difference]: With dead ends: 130 [2022-07-13 13:37:56,916 INFO L226 Difference]: Without dead ends: 57 [2022-07-13 13:37:56,920 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 [2022-07-13 13:37:56,923 INFO L413 NwaCegarLoop]: 100 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, 100 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 [2022-07-13 13:37:56,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 13:37:56,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-13 13:37:56,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-07-13 13:37:56,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.5535714285714286) internal successors, (87), 56 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:37:56,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 87 transitions. [2022-07-13 13:37:56,970 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 87 transitions. Word has length 9 [2022-07-13 13:37:56,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:37:56,971 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 87 transitions. [2022-07-13 13:37:56,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:37:56,971 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 87 transitions. [2022-07-13 13:37:56,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-13 13:37:56,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:37:56,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:37:56,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 13:37:56,972 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:37:56,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:37:56,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1422697760, now seen corresponding path program 1 times [2022-07-13 13:37:56,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:37:56,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92071774] [2022-07-13 13:37:56,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:37:56,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:37:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:37:57,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 13:37:57,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:37:57,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92071774] [2022-07-13 13:37:57,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92071774] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:37:57,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:37:57,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 13:37:57,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89889765] [2022-07-13 13:37:57,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:37:57,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:37:57,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:37:57,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:37:57,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:37:57,048 INFO L87 Difference]: Start difference. First operand 57 states and 87 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:37:57,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:37:57,081 INFO L93 Difference]: Finished difference Result 115 states and 176 transitions. [2022-07-13 13:37:57,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:37:57,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-07-13 13:37:57,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:37:57,083 INFO L225 Difference]: With dead ends: 115 [2022-07-13 13:37:57,083 INFO L226 Difference]: Without dead ends: 60 [2022-07-13 13:37:57,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:37:57,085 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 4 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 13:37:57,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 154 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 13:37:57,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-07-13 13:37:57,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-07-13 13:37:57,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 59 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:37:57,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 90 transitions. [2022-07-13 13:37:57,093 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 90 transitions. Word has length 10 [2022-07-13 13:37:57,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:37:57,094 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 90 transitions. [2022-07-13 13:37:57,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:37:57,094 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 90 transitions. [2022-07-13 13:37:57,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-13 13:37:57,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:37:57,095 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:37:57,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 13:37:57,097 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:37:57,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:37:57,098 INFO L85 PathProgramCache]: Analyzing trace with hash 658032531, now seen corresponding path program 1 times [2022-07-13 13:37:57,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:37:57,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742301285] [2022-07-13 13:37:57,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:37:57,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:37:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:37:57,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 13:37:57,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:37:57,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742301285] [2022-07-13 13:37:57,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742301285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:37:57,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:37:57,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 13:37:57,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580624162] [2022-07-13 13:37:57,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:37:57,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:37:57,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:37:57,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:37:57,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:37:57,138 INFO L87 Difference]: Start difference. First operand 60 states and 90 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:37:57,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:37:57,172 INFO L93 Difference]: Finished difference Result 123 states and 185 transitions. [2022-07-13 13:37:57,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:37:57,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2022-07-13 13:37:57,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:37:57,174 INFO L225 Difference]: With dead ends: 123 [2022-07-13 13:37:57,175 INFO L226 Difference]: Without dead ends: 66 [2022-07-13 13:37:57,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:37:57,177 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 29 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 13:37:57,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 130 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 13:37:57,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-07-13 13:37:57,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2022-07-13 13:37:57,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.492063492063492) internal successors, (94), 63 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:37:57,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 94 transitions. [2022-07-13 13:37:57,188 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 94 transitions. Word has length 15 [2022-07-13 13:37:57,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:37:57,188 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 94 transitions. [2022-07-13 13:37:57,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:37:57,189 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 94 transitions. [2022-07-13 13:37:57,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-13 13:37:57,189 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:37:57,189 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:37:57,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 13:37:57,189 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:37:57,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:37:57,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2017993163, now seen corresponding path program 1 times [2022-07-13 13:37:57,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:37:57,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831672614] [2022-07-13 13:37:57,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:37:57,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:37:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:37:57,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 13:37:57,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:37:57,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831672614] [2022-07-13 13:37:57,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831672614] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:37:57,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:37:57,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 13:37:57,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832740968] [2022-07-13 13:37:57,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:37:57,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:37:57,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:37:57,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:37:57,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:37:57,221 INFO L87 Difference]: Start difference. First operand 64 states and 94 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:37:57,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:37:57,256 INFO L93 Difference]: Finished difference Result 182 states and 272 transitions. [2022-07-13 13:37:57,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:37:57,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-07-13 13:37:57,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:37:57,258 INFO L225 Difference]: With dead ends: 182 [2022-07-13 13:37:57,258 INFO L226 Difference]: Without dead ends: 117 [2022-07-13 13:37:57,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:37:57,259 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 56 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 13:37:57,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 184 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 13:37:57,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-13 13:37:57,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 108. [2022-07-13 13:37:57,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.4953271028037383) internal successors, (160), 107 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:37:57,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 160 transitions. [2022-07-13 13:37:57,266 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 160 transitions. Word has length 20 [2022-07-13 13:37:57,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:37:57,266 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 160 transitions. [2022-07-13 13:37:57,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:37:57,267 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 160 transitions. [2022-07-13 13:37:57,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-13 13:37:57,267 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:37:57,267 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:37:57,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 13:37:57,268 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:37:57,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:37:57,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1713693363, now seen corresponding path program 1 times [2022-07-13 13:37:57,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:37:57,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970014631] [2022-07-13 13:37:57,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:37:57,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:37:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:37:57,316 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 13:37:57,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:37:57,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970014631] [2022-07-13 13:37:57,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970014631] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:37:57,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:37:57,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 13:37:57,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494074394] [2022-07-13 13:37:57,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:37:57,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:37:57,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:37:57,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:37:57,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:37:57,318 INFO L87 Difference]: Start difference. First operand 108 states and 160 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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) [2022-07-13 13:37:57,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:37:57,332 INFO L93 Difference]: Finished difference Result 176 states and 262 transitions. [2022-07-13 13:37:57,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:37:57,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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 27 [2022-07-13 13:37:57,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:37:57,333 INFO L225 Difference]: With dead ends: 176 [2022-07-13 13:37:57,334 INFO L226 Difference]: Without dead ends: 71 [2022-07-13 13:37:57,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:37:57,335 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 30 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 13:37:57,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 90 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 13:37:57,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-07-13 13:37:57,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-07-13 13:37:57,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.3857142857142857) internal successors, (97), 70 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:37:57,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 97 transitions. [2022-07-13 13:37:57,339 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 97 transitions. Word has length 27 [2022-07-13 13:37:57,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:37:57,340 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 97 transitions. [2022-07-13 13:37:57,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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) [2022-07-13 13:37:57,340 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 97 transitions. [2022-07-13 13:37:57,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-13 13:37:57,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:37:57,341 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-07-13 13:37:57,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 13:37:57,341 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:37:57,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:37:57,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1521721792, now seen corresponding path program 1 times [2022-07-13 13:37:57,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:37:57,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931474076] [2022-07-13 13:37:57,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:37:57,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:37:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:37:57,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 13:37:57,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:37:57,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931474076] [2022-07-13 13:37:57,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931474076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:37:57,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:37:57,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 13:37:57,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221832026] [2022-07-13 13:37:57,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:37:57,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 13:37:57,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:37:57,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 13:37:57,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 13:37:57,379 INFO L87 Difference]: Start difference. First operand 71 states and 97 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:37:57,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:37:57,401 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2022-07-13 13:37:57,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 13:37:57,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 33 [2022-07-13 13:37:57,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:37:57,402 INFO L225 Difference]: With dead ends: 74 [2022-07-13 13:37:57,402 INFO L226 Difference]: Without dead ends: 0 [2022-07-13 13:37:57,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 13:37:57,403 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 17 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 13:37:57,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 135 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 13:37:57,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-13 13:37:57,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-13 13:37:57,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:37:57,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-13 13:37:57,411 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2022-07-13 13:37:57,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:37:57,411 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 13:37:57,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:37:57,411 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-13 13:37:57,411 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-13 13:37:57,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 13:37:57,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 13:37:57,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-13 13:37:57,452 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 51) no Hoare annotation was computed. [2022-07-13 13:37:57,453 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-13 13:37:57,453 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 49) no Hoare annotation was computed. [2022-07-13 13:37:57,453 INFO L899 garLoopResultBuilder]: For program point L88(lines 88 103) no Hoare annotation was computed. [2022-07-13 13:37:57,453 INFO L899 garLoopResultBuilder]: For program point L55(lines 55 106) no Hoare annotation was computed. [2022-07-13 13:37:57,453 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 219) no Hoare annotation was computed. [2022-07-13 13:37:57,453 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 87) no Hoare annotation was computed. [2022-07-13 13:37:57,453 INFO L899 garLoopResultBuilder]: For program point L320(lines 320 335) no Hoare annotation was computed. [2022-07-13 13:37:57,454 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 203) no Hoare annotation was computed. [2022-07-13 13:37:57,454 INFO L899 garLoopResultBuilder]: For program point L56(lines 56 71) no Hoare annotation was computed. [2022-07-13 13:37:57,454 INFO L895 garLoopResultBuilder]: At program point L337(lines 25 341) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~this_sink~0#1| 0))) (or (and .cse0 (= 2 |ULTIMATE.start_main_~q~0#1|)) (and (= 3 |ULTIMATE.start_main_~q~0#1|) (not .cse0)) (= |ULTIMATE.start_main_~q~0#1| 0))) [2022-07-13 13:37:57,454 INFO L899 garLoopResultBuilder]: For program point L304(lines 304 319) no Hoare annotation was computed. [2022-07-13 13:37:57,454 INFO L899 garLoopResultBuilder]: For program point L172(lines 172 187) no Hoare annotation was computed. [2022-07-13 13:37:57,454 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 303) no Hoare annotation was computed. [2022-07-13 13:37:57,455 INFO L899 garLoopResultBuilder]: For program point L156(lines 156 171) no Hoare annotation was computed. [2022-07-13 13:37:57,455 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 101) no Hoare annotation was computed. [2022-07-13 13:37:57,455 INFO L899 garLoopResultBuilder]: For program point L272(lines 272 287) no Hoare annotation was computed. [2022-07-13 13:37:57,455 INFO L899 garLoopResultBuilder]: For program point L206(lines 206 217) no Hoare annotation was computed. [2022-07-13 13:37:57,455 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 155) no Hoare annotation was computed. [2022-07-13 13:37:57,455 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 222) no Hoare annotation was computed. [2022-07-13 13:37:57,455 INFO L899 garLoopResultBuilder]: For program point L74(lines 74 85) no Hoare annotation was computed. [2022-07-13 13:37:57,455 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 333) no Hoare annotation was computed. [2022-07-13 13:37:57,456 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-13 13:37:57,456 INFO L899 garLoopResultBuilder]: For program point L256(lines 256 271) no Hoare annotation was computed. [2022-07-13 13:37:57,456 INFO L899 garLoopResultBuilder]: For program point L223(lines 223 338) no Hoare annotation was computed. [2022-07-13 13:37:57,456 INFO L899 garLoopResultBuilder]: For program point L190(lines 190 201) no Hoare annotation was computed. [2022-07-13 13:37:57,456 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 139) no Hoare annotation was computed. [2022-07-13 13:37:57,456 INFO L899 garLoopResultBuilder]: For program point L58(lines 58 69) no Hoare annotation was computed. [2022-07-13 13:37:57,456 INFO L895 garLoopResultBuilder]: At program point L25-2(lines 25 341) the Hoare annotation is: (and (= |ULTIMATE.start_main_~this_sink~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0)) [2022-07-13 13:37:57,457 INFO L899 garLoopResultBuilder]: For program point L25-3(lines 25 341) no Hoare annotation was computed. [2022-07-13 13:37:57,457 INFO L899 garLoopResultBuilder]: For program point L306(lines 306 317) no Hoare annotation was computed. [2022-07-13 13:37:57,457 INFO L899 garLoopResultBuilder]: For program point L240(lines 240 255) no Hoare annotation was computed. [2022-07-13 13:37:57,457 INFO L899 garLoopResultBuilder]: For program point L174(lines 174 185) no Hoare annotation was computed. [2022-07-13 13:37:57,457 INFO L899 garLoopResultBuilder]: For program point L108(lines 108 123) no Hoare annotation was computed. [2022-07-13 13:37:57,457 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 44) no Hoare annotation was computed. [2022-07-13 13:37:57,457 INFO L899 garLoopResultBuilder]: For program point L290(lines 290 301) no Hoare annotation was computed. [2022-07-13 13:37:57,458 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 239) no Hoare annotation was computed. [2022-07-13 13:37:57,458 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 169) no Hoare annotation was computed. [2022-07-13 13:37:57,458 INFO L899 garLoopResultBuilder]: For program point L274(lines 274 285) no Hoare annotation was computed. [2022-07-13 13:37:57,458 INFO L899 garLoopResultBuilder]: For program point L142(lines 142 153) no Hoare annotation was computed. [2022-07-13 13:37:57,458 INFO L899 garLoopResultBuilder]: For program point L258(lines 258 269) no Hoare annotation was computed. [2022-07-13 13:37:57,458 INFO L899 garLoopResultBuilder]: For program point L126(lines 126 137) no Hoare annotation was computed. [2022-07-13 13:37:57,458 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 253) no Hoare annotation was computed. [2022-07-13 13:37:57,459 INFO L899 garLoopResultBuilder]: For program point L110(lines 110 121) no Hoare annotation was computed. [2022-07-13 13:37:57,459 INFO L899 garLoopResultBuilder]: For program point L226(lines 226 237) no Hoare annotation was computed. [2022-07-13 13:37:57,459 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 96) no Hoare annotation was computed. [2022-07-13 13:37:57,459 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-13 13:37:57,459 INFO L899 garLoopResultBuilder]: For program point L210(lines 210 212) no Hoare annotation was computed. [2022-07-13 13:37:57,459 INFO L899 garLoopResultBuilder]: For program point L78(lines 78 80) no Hoare annotation was computed. [2022-07-13 13:37:57,459 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 328) no Hoare annotation was computed. [2022-07-13 13:37:57,460 INFO L899 garLoopResultBuilder]: For program point L194(lines 194 196) no Hoare annotation was computed. [2022-07-13 13:37:57,460 INFO L899 garLoopResultBuilder]: For program point L62(lines 62 64) no Hoare annotation was computed. [2022-07-13 13:37:57,460 INFO L899 garLoopResultBuilder]: For program point L310(lines 310 312) no Hoare annotation was computed. [2022-07-13 13:37:57,460 INFO L899 garLoopResultBuilder]: For program point L178(lines 178 180) no Hoare annotation was computed. [2022-07-13 13:37:57,460 INFO L895 garLoopResultBuilder]: At program point L327(lines 15 346) the Hoare annotation is: false [2022-07-13 13:37:57,460 INFO L899 garLoopResultBuilder]: For program point L294(lines 294 296) no Hoare annotation was computed. [2022-07-13 13:37:57,460 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 164) no Hoare annotation was computed. [2022-07-13 13:37:57,460 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 280) no Hoare annotation was computed. [2022-07-13 13:37:57,461 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 148) no Hoare annotation was computed. [2022-07-13 13:37:57,461 INFO L899 garLoopResultBuilder]: For program point L262(lines 262 264) no Hoare annotation was computed. [2022-07-13 13:37:57,461 INFO L899 garLoopResultBuilder]: For program point L130(lines 130 132) no Hoare annotation was computed. [2022-07-13 13:37:57,461 INFO L899 garLoopResultBuilder]: For program point L246(lines 246 248) no Hoare annotation was computed. [2022-07-13 13:37:57,461 INFO L899 garLoopResultBuilder]: For program point L114(lines 114 116) no Hoare annotation was computed. [2022-07-13 13:37:57,461 INFO L902 garLoopResultBuilder]: At program point L15(lines 15 346) the Hoare annotation is: true [2022-07-13 13:37:57,461 INFO L899 garLoopResultBuilder]: For program point L230(lines 230 232) no Hoare annotation was computed. [2022-07-13 13:37:57,462 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-13 13:37:57,462 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 345) no Hoare annotation was computed. [2022-07-13 13:37:57,462 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 54) no Hoare annotation was computed. [2022-07-13 13:37:57,464 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-13 13:37:57,466 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 13:37:57,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 01:37:57 BoogieIcfgContainer [2022-07-13 13:37:57,475 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 13:37:57,475 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 13:37:57,475 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 13:37:57,476 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 13:37:57,476 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 01:37:56" (3/4) ... [2022-07-13 13:37:57,478 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 13:37:57,485 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-07-13 13:37:57,486 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-13 13:37:57,488 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 13:37:57,488 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 13:37:57,511 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 13:37:57,511 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 13:37:57,511 INFO L158 Benchmark]: Toolchain (without parser) took 1349.60ms. Allocated memory was 104.9MB in the beginning and 130.0MB in the end (delta: 25.2MB). Free memory was 72.3MB in the beginning and 99.1MB in the end (delta: -26.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 13:37:57,512 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 81.8MB. Free memory was 38.8MB in the beginning and 38.8MB in the end (delta: 29.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 13:37:57,512 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.86ms. Allocated memory is still 104.9MB. Free memory was 72.1MB in the beginning and 79.7MB in the end (delta: -7.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 13:37:57,512 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.26ms. Allocated memory is still 104.9MB. Free memory was 79.3MB in the beginning and 77.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 13:37:57,512 INFO L158 Benchmark]: Boogie Preprocessor took 25.12ms. Allocated memory is still 104.9MB. Free memory was 77.6MB in the beginning and 76.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 13:37:57,513 INFO L158 Benchmark]: RCFGBuilder took 246.96ms. Allocated memory is still 104.9MB. Free memory was 76.0MB in the beginning and 60.8MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-13 13:37:57,513 INFO L158 Benchmark]: TraceAbstraction took 826.08ms. Allocated memory was 104.9MB in the beginning and 130.0MB in the end (delta: 25.2MB). Free memory was 60.4MB in the beginning and 102.0MB in the end (delta: -41.6MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2022-07-13 13:37:57,513 INFO L158 Benchmark]: Witness Printer took 35.61ms. Allocated memory is still 130.0MB. Free memory was 102.0MB in the beginning and 99.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 13:37:57,515 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 81.8MB. Free memory was 38.8MB in the beginning and 38.8MB in the end (delta: 29.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.86ms. Allocated memory is still 104.9MB. Free memory was 72.1MB in the beginning and 79.7MB in the end (delta: -7.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.26ms. Allocated memory is still 104.9MB. Free memory was 79.3MB in the beginning and 77.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.12ms. Allocated memory is still 104.9MB. Free memory was 77.6MB in the beginning and 76.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 246.96ms. Allocated memory is still 104.9MB. Free memory was 76.0MB in the beginning and 60.8MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 826.08ms. Allocated memory was 104.9MB in the beginning and 130.0MB in the end (delta: 25.2MB). Free memory was 60.4MB in the beginning and 102.0MB in the end (delta: -41.6MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. * Witness Printer took 35.61ms. Allocated memory is still 130.0MB. Free memory was 102.0MB in the beginning and 99.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 345]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 136 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 793 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 281 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 512 mSDtfsCounter, 82 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=4, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 28 HoareAnnotationTreeSize, 4 FomulaSimplifications, 7 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 23 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 187 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 19/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: this_sink == 0 && q == 0 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((this_sink == 0 && 2 == q) || (3 == q && !(this_sink == 0))) || q == 0 RESULT: Ultimate proved your program to be correct! [2022-07-13 13:37:57,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE