./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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/openssl-simplified/s3_srvr_1a.cil.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 9bbd8ebbfdd1aa7b2aaa2f32f767526fd317d11dcf6b707f4c34423040b4383f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-27 21:55:42,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-27 21:55:42,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-27 21:55:42,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-27 21:55:42,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-27 21:55:42,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-27 21:55:42,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-27 21:55:42,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-27 21:55:42,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-27 21:55:42,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-27 21:55:42,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-27 21:55:42,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-27 21:55:42,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-27 21:55:42,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-27 21:55:42,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-27 21:55:42,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-27 21:55:42,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-27 21:55:42,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-27 21:55:42,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-27 21:55:42,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-27 21:55:42,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-27 21:55:42,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-27 21:55:42,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-27 21:55:42,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-27 21:55:42,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-27 21:55:42,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-27 21:55:42,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-27 21:55:42,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-27 21:55:42,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-27 21:55:42,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-27 21:55:42,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-27 21:55:42,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-27 21:55:42,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-27 21:55:42,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-27 21:55:42,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-27 21:55:42,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-27 21:55:42,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-27 21:55:42,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-27 21:55:42,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-27 21:55:42,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-27 21:55:42,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-27 21:55:42,476 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-27 21:55:42,502 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-27 21:55:42,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-27 21:55:42,503 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-27 21:55:42,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-27 21:55:42,504 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-27 21:55:42,504 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-27 21:55:42,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-27 21:55:42,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-27 21:55:42,505 INFO L138 SettingsManager]: * Use SBE=true [2021-12-27 21:55:42,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-27 21:55:42,505 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-27 21:55:42,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-27 21:55:42,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-27 21:55:42,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-27 21:55:42,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-27 21:55:42,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-27 21:55:42,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-27 21:55:42,506 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-27 21:55:42,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-27 21:55:42,506 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-27 21:55:42,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-27 21:55:42,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-27 21:55:42,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-27 21:55:42,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-27 21:55:42,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 21:55:42,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-27 21:55:42,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-27 21:55:42,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-27 21:55:42,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-27 21:55:42,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-27 21:55:42,508 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-27 21:55:42,508 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-27 21:55:42,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-27 21:55:42,508 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bbd8ebbfdd1aa7b2aaa2f32f767526fd317d11dcf6b707f4c34423040b4383f [2021-12-27 21:55:42,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-27 21:55:42,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-27 21:55:42,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-27 21:55:42,785 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-27 21:55:42,786 INFO L275 PluginConnector]: CDTParser initialized [2021-12-27 21:55:42,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c [2021-12-27 21:55:42,832 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccb9e3da7/4dfa72a381c74dedb09fceed8fe692da/FLAG37505250d [2021-12-27 21:55:43,236 INFO L306 CDTParser]: Found 1 translation units. [2021-12-27 21:55:43,238 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c [2021-12-27 21:55:43,244 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccb9e3da7/4dfa72a381c74dedb09fceed8fe692da/FLAG37505250d [2021-12-27 21:55:43,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccb9e3da7/4dfa72a381c74dedb09fceed8fe692da [2021-12-27 21:55:43,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-27 21:55:43,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-27 21:55:43,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-27 21:55:43,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-27 21:55:43,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-27 21:55:43,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 09:55:43" (1/1) ... [2021-12-27 21:55:43,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b12e850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:55:43, skipping insertion in model container [2021-12-27 21:55:43,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 09:55:43" (1/1) ... [2021-12-27 21:55:43,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-27 21:55:43,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-27 21:55:43,421 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/openssl-simplified/s3_srvr_1a.cil.c[14184,14197] [2021-12-27 21:55:43,424 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 21:55:43,437 INFO L203 MainTranslator]: Completed pre-run [2021-12-27 21:55:43,473 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/openssl-simplified/s3_srvr_1a.cil.c[14184,14197] [2021-12-27 21:55:43,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 21:55:43,483 INFO L208 MainTranslator]: Completed translation [2021-12-27 21:55:43,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:55:43 WrapperNode [2021-12-27 21:55:43,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-27 21:55:43,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-27 21:55:43,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-27 21:55:43,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-27 21:55:43,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:55:43" (1/1) ... [2021-12-27 21:55:43,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:55:43" (1/1) ... [2021-12-27 21:55:43,513 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 140 [2021-12-27 21:55:43,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-27 21:55:43,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-27 21:55:43,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-27 21:55:43,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-27 21:55:43,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:55:43" (1/1) ... [2021-12-27 21:55:43,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:55:43" (1/1) ... [2021-12-27 21:55:43,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:55:43" (1/1) ... [2021-12-27 21:55:43,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:55:43" (1/1) ... [2021-12-27 21:55:43,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:55:43" (1/1) ... [2021-12-27 21:55:43,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:55:43" (1/1) ... [2021-12-27 21:55:43,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:55:43" (1/1) ... [2021-12-27 21:55:43,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-27 21:55:43,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-27 21:55:43,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-27 21:55:43,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-27 21:55:43,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:55:43" (1/1) ... [2021-12-27 21:55:43,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 21:55:43,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:55:43,601 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) [2021-12-27 21:55:43,642 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 [2021-12-27 21:55:43,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-27 21:55:43,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-27 21:55:43,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-27 21:55:43,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-27 21:55:43,712 INFO L234 CfgBuilder]: Building ICFG [2021-12-27 21:55:43,713 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-27 21:55:43,892 INFO L275 CfgBuilder]: Performing block encoding [2021-12-27 21:55:43,895 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-27 21:55:43,896 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-27 21:55:43,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 09:55:43 BoogieIcfgContainer [2021-12-27 21:55:43,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-27 21:55:43,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-27 21:55:43,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-27 21:55:43,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-27 21:55:43,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 09:55:43" (1/3) ... [2021-12-27 21:55:43,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ee4891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 09:55:43, skipping insertion in model container [2021-12-27 21:55:43,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:55:43" (2/3) ... [2021-12-27 21:55:43,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ee4891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 09:55:43, skipping insertion in model container [2021-12-27 21:55:43,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 09:55:43" (3/3) ... [2021-12-27 21:55:43,908 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.cil.c [2021-12-27 21:55:43,911 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-27 21:55:43,911 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-27 21:55:43,971 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-27 21:55:43,975 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-27 21:55:43,975 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-27 21:55:43,986 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 45 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:55:43,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-27 21:55:43,989 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:55:43,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-27 21:55:43,990 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:55:43,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:55:43,993 INFO L85 PathProgramCache]: Analyzing trace with hash 28699930, now seen corresponding path program 1 times [2021-12-27 21:55:44,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:55:44,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298529023] [2021-12-27 21:55:44,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:55:44,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:55:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:55:44,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:55:44,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:55:44,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298529023] [2021-12-27 21:55:44,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298529023] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:55:44,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:55:44,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 21:55:44,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620518575] [2021-12-27 21:55:44,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:55:44,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 21:55:44,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:55:44,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 21:55:44,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:55:44,167 INFO L87 Difference]: Start difference. First operand has 46 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 45 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:55:44,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:55:44,240 INFO L93 Difference]: Finished difference Result 131 states and 218 transitions. [2021-12-27 21:55:44,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 21:55:44,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-12-27 21:55:44,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:55:44,249 INFO L225 Difference]: With dead ends: 131 [2021-12-27 21:55:44,249 INFO L226 Difference]: Without dead ends: 79 [2021-12-27 21:55:44,251 INFO L932 BasicCegarLoop]: 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 [2021-12-27 21:55:44,253 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 59 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 21:55:44,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 122 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 21:55:44,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-12-27 21:55:44,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-12-27 21:55:44,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:55:44,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 121 transitions. [2021-12-27 21:55:44,289 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 121 transitions. Word has length 5 [2021-12-27 21:55:44,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:55:44,290 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 121 transitions. [2021-12-27 21:55:44,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:55:44,291 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 121 transitions. [2021-12-27 21:55:44,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-27 21:55:44,292 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:55:44,292 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:55:44,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-27 21:55:44,293 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:55:44,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:55:44,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1485309586, now seen corresponding path program 1 times [2021-12-27 21:55:44,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:55:44,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389157294] [2021-12-27 21:55:44,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:55:44,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:55:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:55:44,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:55:44,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:55:44,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389157294] [2021-12-27 21:55:44,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389157294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:55:44,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:55:44,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 21:55:44,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79186387] [2021-12-27 21:55:44,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:55:44,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 21:55:44,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:55:44,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 21:55:44,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:55:44,340 INFO L87 Difference]: Start difference. First operand 79 states and 121 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) [2021-12-27 21:55:44,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:55:44,412 INFO L93 Difference]: Finished difference Result 156 states and 246 transitions. [2021-12-27 21:55:44,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 21:55:44,412 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 [2021-12-27 21:55:44,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:55:44,413 INFO L225 Difference]: With dead ends: 156 [2021-12-27 21:55:44,414 INFO L226 Difference]: Without dead ends: 116 [2021-12-27 21:55:44,414 INFO L932 BasicCegarLoop]: 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 [2021-12-27 21:55:44,415 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 51 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 21:55:44,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 161 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 21:55:44,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-12-27 21:55:44,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-12-27 21:55:44,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.5217391304347827) internal successors, (175), 115 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:55:44,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 175 transitions. [2021-12-27 21:55:44,435 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 175 transitions. Word has length 10 [2021-12-27 21:55:44,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:55:44,435 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 175 transitions. [2021-12-27 21:55:44,436 INFO L471 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) [2021-12-27 21:55:44,436 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 175 transitions. [2021-12-27 21:55:44,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-27 21:55:44,436 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:55:44,437 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:55:44,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-27 21:55:44,437 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:55:44,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:55:44,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1152886494, now seen corresponding path program 1 times [2021-12-27 21:55:44,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:55:44,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685277134] [2021-12-27 21:55:44,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:55:44,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:55:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:55:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-27 21:55:44,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:55:44,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685277134] [2021-12-27 21:55:44,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685277134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:55:44,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:55:44,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 21:55:44,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227717806] [2021-12-27 21:55:44,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:55:44,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 21:55:44,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:55:44,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 21:55:44,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:55:44,473 INFO L87 Difference]: Start difference. First operand 116 states and 175 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:55:44,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:55:44,501 INFO L93 Difference]: Finished difference Result 230 states and 355 transitions. [2021-12-27 21:55:44,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 21:55:44,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 16 [2021-12-27 21:55:44,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:55:44,502 INFO L225 Difference]: With dead ends: 230 [2021-12-27 21:55:44,503 INFO L226 Difference]: Without dead ends: 153 [2021-12-27 21:55:44,503 INFO L932 BasicCegarLoop]: 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 [2021-12-27 21:55:44,504 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 52 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 21:55:44,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 164 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 21:55:44,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-12-27 21:55:44,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-12-27 21:55:44,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.513157894736842) internal successors, (230), 152 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:55:44,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 230 transitions. [2021-12-27 21:55:44,515 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 230 transitions. Word has length 16 [2021-12-27 21:55:44,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:55:44,515 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 230 transitions. [2021-12-27 21:55:44,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:55:44,515 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 230 transitions. [2021-12-27 21:55:44,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-27 21:55:44,516 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:55:44,516 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:55:44,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-27 21:55:44,517 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:55:44,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:55:44,517 INFO L85 PathProgramCache]: Analyzing trace with hash -77104047, now seen corresponding path program 1 times [2021-12-27 21:55:44,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:55:44,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497899694] [2021-12-27 21:55:44,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:55:44,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:55:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:55:44,542 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-27 21:55:44,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:55:44,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497899694] [2021-12-27 21:55:44,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497899694] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:55:44,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:55:44,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 21:55:44,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959342675] [2021-12-27 21:55:44,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:55:44,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 21:55:44,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:55:44,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 21:55:44,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:55:44,545 INFO L87 Difference]: Start difference. First operand 153 states and 230 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:55:44,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:55:44,589 INFO L93 Difference]: Finished difference Result 321 states and 484 transitions. [2021-12-27 21:55:44,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 21:55:44,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 31 [2021-12-27 21:55:44,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:55:44,590 INFO L225 Difference]: With dead ends: 321 [2021-12-27 21:55:44,590 INFO L226 Difference]: Without dead ends: 170 [2021-12-27 21:55:44,591 INFO L932 BasicCegarLoop]: 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 [2021-12-27 21:55:44,592 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 2 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 21:55:44,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 91 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 21:55:44,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-27 21:55:44,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 168. [2021-12-27 21:55:44,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.473053892215569) internal successors, (246), 167 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:55:44,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 246 transitions. [2021-12-27 21:55:44,601 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 246 transitions. Word has length 31 [2021-12-27 21:55:44,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:55:44,602 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 246 transitions. [2021-12-27 21:55:44,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:55:44,602 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 246 transitions. [2021-12-27 21:55:44,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-27 21:55:44,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:55:44,603 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:55:44,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-27 21:55:44,603 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:55:44,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:55:44,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1611839695, now seen corresponding path program 1 times [2021-12-27 21:55:44,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:55:44,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165627714] [2021-12-27 21:55:44,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:55:44,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:55:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:55:44,635 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-27 21:55:44,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:55:44,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165627714] [2021-12-27 21:55:44,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165627714] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:55:44,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:55:44,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 21:55:44,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154685462] [2021-12-27 21:55:44,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:55:44,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 21:55:44,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:55:44,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 21:55:44,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:55:44,637 INFO L87 Difference]: Start difference. First operand 168 states and 246 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) [2021-12-27 21:55:44,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:55:44,689 INFO L93 Difference]: Finished difference Result 378 states and 567 transitions. [2021-12-27 21:55:44,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 21:55:44,690 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 31 [2021-12-27 21:55:44,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:55:44,691 INFO L225 Difference]: With dead ends: 378 [2021-12-27 21:55:44,691 INFO L226 Difference]: Without dead ends: 212 [2021-12-27 21:55:44,691 INFO L932 BasicCegarLoop]: 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 [2021-12-27 21:55:44,692 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 17 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 21:55:44,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 86 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 21:55:44,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-12-27 21:55:44,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 207. [2021-12-27 21:55:44,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.383495145631068) internal successors, (285), 206 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:55:44,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 285 transitions. [2021-12-27 21:55:44,701 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 285 transitions. Word has length 31 [2021-12-27 21:55:44,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:55:44,701 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 285 transitions. [2021-12-27 21:55:44,702 INFO L471 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) [2021-12-27 21:55:44,702 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 285 transitions. [2021-12-27 21:55:44,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-27 21:55:44,703 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:55:44,703 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:55:44,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-27 21:55:44,704 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:55:44,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:55:44,704 INFO L85 PathProgramCache]: Analyzing trace with hash -359756882, now seen corresponding path program 1 times [2021-12-27 21:55:44,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:55:44,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402302837] [2021-12-27 21:55:44,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:55:44,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:55:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:55:44,736 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-27 21:55:44,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:55:44,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402302837] [2021-12-27 21:55:44,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402302837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:55:44,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:55:44,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 21:55:44,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018588573] [2021-12-27 21:55:44,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:55:44,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 21:55:44,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:55:44,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 21:55:44,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:55:44,738 INFO L87 Difference]: Start difference. First operand 207 states and 285 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:55:44,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:55:44,763 INFO L93 Difference]: Finished difference Result 414 states and 577 transitions. [2021-12-27 21:55:44,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 21:55:44,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 45 [2021-12-27 21:55:44,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:55:44,764 INFO L225 Difference]: With dead ends: 414 [2021-12-27 21:55:44,764 INFO L226 Difference]: Without dead ends: 264 [2021-12-27 21:55:44,765 INFO L932 BasicCegarLoop]: 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 [2021-12-27 21:55:44,765 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 40 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 21:55:44,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 163 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 21:55:44,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-12-27 21:55:44,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2021-12-27 21:55:44,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 1.3793103448275863) internal successors, (360), 261 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:55:44,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 360 transitions. [2021-12-27 21:55:44,773 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 360 transitions. Word has length 45 [2021-12-27 21:55:44,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:55:44,773 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 360 transitions. [2021-12-27 21:55:44,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:55:44,774 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 360 transitions. [2021-12-27 21:55:44,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-27 21:55:44,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:55:44,775 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:55:44,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-27 21:55:44,775 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:55:44,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:55:44,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1572307813, now seen corresponding path program 1 times [2021-12-27 21:55:44,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:55:44,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170240608] [2021-12-27 21:55:44,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:55:44,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:55:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:55:44,812 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-27 21:55:44,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:55:44,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170240608] [2021-12-27 21:55:44,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170240608] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:55:44,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:55:44,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 21:55:44,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599022289] [2021-12-27 21:55:44,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:55:44,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 21:55:44,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:55:44,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 21:55:44,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:55:44,814 INFO L87 Difference]: Start difference. First operand 262 states and 360 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:55:44,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:55:44,881 INFO L93 Difference]: Finished difference Result 520 states and 731 transitions. [2021-12-27 21:55:44,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 21:55:44,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 48 [2021-12-27 21:55:44,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:55:44,882 INFO L225 Difference]: With dead ends: 520 [2021-12-27 21:55:44,882 INFO L226 Difference]: Without dead ends: 182 [2021-12-27 21:55:44,883 INFO L932 BasicCegarLoop]: 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 [2021-12-27 21:55:44,883 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 21 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-27 21:55:44,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 80 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-27 21:55:44,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-12-27 21:55:44,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 179. [2021-12-27 21:55:44,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.2921348314606742) internal successors, (230), 178 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:55:44,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 230 transitions. [2021-12-27 21:55:44,897 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 230 transitions. Word has length 48 [2021-12-27 21:55:44,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:55:44,897 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 230 transitions. [2021-12-27 21:55:44,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:55:44,898 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 230 transitions. [2021-12-27 21:55:44,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-27 21:55:44,899 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:55:44,899 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:55:44,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-27 21:55:44,899 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:55:44,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:55:44,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1927293386, now seen corresponding path program 1 times [2021-12-27 21:55:44,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:55:44,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716657018] [2021-12-27 21:55:44,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:55:44,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:55:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:55:44,972 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-27 21:55:44,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:55:44,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716657018] [2021-12-27 21:55:44,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716657018] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:55:44,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:55:44,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 21:55:44,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190066646] [2021-12-27 21:55:44,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:55:44,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 21:55:44,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:55:44,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 21:55:44,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:55:44,974 INFO L87 Difference]: Start difference. First operand 179 states and 230 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:55:44,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:55:44,981 INFO L93 Difference]: Finished difference Result 271 states and 328 transitions. [2021-12-27 21:55:44,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 21:55:44,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 76 [2021-12-27 21:55:44,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:55:44,982 INFO L225 Difference]: With dead ends: 271 [2021-12-27 21:55:44,982 INFO L226 Difference]: Without dead ends: 0 [2021-12-27 21:55:44,982 INFO L932 BasicCegarLoop]: 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 [2021-12-27 21:55:44,983 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 2 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 21:55:44,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 125 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 21:55:44,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-27 21:55:44,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-27 21:55:44,984 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) [2021-12-27 21:55:44,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-27 21:55:44,984 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2021-12-27 21:55:44,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:55:44,984 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-27 21:55:44,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:55:44,985 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-27 21:55:44,995 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-27 21:55:44,997 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-27 21:55:44,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-27 21:55:44,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-27 21:55:45,284 INFO L861 garLoopResultBuilder]: At program point L225(lines 20 229) the Hoare annotation is: true [2021-12-27 21:55:45,284 INFO L858 garLoopResultBuilder]: For program point L126(lines 126 130) no Hoare annotation was computed. [2021-12-27 21:55:45,284 INFO L858 garLoopResultBuilder]: For program point L60(lines 60 207) no Hoare annotation was computed. [2021-12-27 21:55:45,285 INFO L858 garLoopResultBuilder]: For program point L184(lines 184 186) no Hoare annotation was computed. [2021-12-27 21:55:45,285 INFO L858 garLoopResultBuilder]: For program point L118(lines 118 122) no Hoare annotation was computed. [2021-12-27 21:55:45,285 INFO L854 garLoopResultBuilder]: At program point L85(lines 84 195) the Hoare annotation is: (let ((.cse0 (<= 8672 |ULTIMATE.start_main_~s__state~0#1|))) (or (and .cse0 (= |ULTIMATE.start_main_~blastFlag~0#1| 0)) (and .cse0 (= |ULTIMATE.start_main_~blastFlag~0#1| 2)) (and .cse0 (= |ULTIMATE.start_main_~blastFlag~0#1| 1)) (and .cse0 (= |ULTIMATE.start_main_~blastFlag~0#1| 3)))) [2021-12-27 21:55:45,285 INFO L858 garLoopResultBuilder]: For program point L52(lines 52 211) no Hoare annotation was computed. [2021-12-27 21:55:45,285 INFO L854 garLoopResultBuilder]: At program point L77(lines 76 199) the Hoare annotation is: (let ((.cse0 (<= 8640 |ULTIMATE.start_main_~s__state~0#1|))) (or (and .cse0 (= |ULTIMATE.start_main_~blastFlag~0#1| 0)) (and (= |ULTIMATE.start_main_~blastFlag~0#1| 1) .cse0) (and (not (= |ULTIMATE.start_main_~s__hit~0#1| 0)) (= |ULTIMATE.start_main_~blastFlag~0#1| 3) .cse0) (and (= |ULTIMATE.start_main_~blastFlag~0#1| 2) .cse0))) [2021-12-27 21:55:45,285 INFO L858 garLoopResultBuilder]: For program point L44(lines 44 215) no Hoare annotation was computed. [2021-12-27 21:55:45,285 INFO L854 garLoopResultBuilder]: At program point L69(lines 68 203) the Hoare annotation is: (or (= (+ (- 2) |ULTIMATE.start_main_~blastFlag~0#1|) 0) (= |ULTIMATE.start_main_~blastFlag~0#1| 0) (= (+ (- 1) |ULTIMATE.start_main_~blastFlag~0#1|) 0)) [2021-12-27 21:55:45,286 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-27 21:55:45,286 INFO L854 garLoopResultBuilder]: At program point L61(lines 60 207) the Hoare annotation is: (or (= (+ (- 2) |ULTIMATE.start_main_~blastFlag~0#1|) 0) (= |ULTIMATE.start_main_~blastFlag~0#1| 0) (= (+ (- 1) |ULTIMATE.start_main_~blastFlag~0#1|) 0)) [2021-12-27 21:55:45,286 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-27 21:55:45,286 INFO L854 garLoopResultBuilder]: At program point L185(lines 20 229) the Hoare annotation is: false [2021-12-27 21:55:45,286 INFO L854 garLoopResultBuilder]: At program point L53(lines 52 211) the Hoare annotation is: (or (= (+ (- 2) |ULTIMATE.start_main_~blastFlag~0#1|) 0) (= |ULTIMATE.start_main_~blastFlag~0#1| 0) (= (+ (- 1) |ULTIMATE.start_main_~blastFlag~0#1|) 0)) [2021-12-27 21:55:45,286 INFO L854 garLoopResultBuilder]: At program point L45(lines 44 215) the Hoare annotation is: (or (= (+ (- 2) |ULTIMATE.start_main_~blastFlag~0#1|) 0) (= |ULTIMATE.start_main_~blastFlag~0#1| 0) (= (+ (- 1) |ULTIMATE.start_main_~blastFlag~0#1|) 0)) [2021-12-27 21:55:45,286 INFO L861 garLoopResultBuilder]: At program point L228(lines 20 229) the Hoare annotation is: true [2021-12-27 21:55:45,286 INFO L858 garLoopResultBuilder]: For program point L80(lines 80 197) no Hoare annotation was computed. [2021-12-27 21:55:45,287 INFO L858 garLoopResultBuilder]: For program point L72(lines 72 201) no Hoare annotation was computed. [2021-12-27 21:55:45,287 INFO L858 garLoopResultBuilder]: For program point L163-1(lines 86 195) no Hoare annotation was computed. [2021-12-27 21:55:45,287 INFO L858 garLoopResultBuilder]: For program point L64(lines 64 205) no Hoare annotation was computed. [2021-12-27 21:55:45,287 INFO L858 garLoopResultBuilder]: For program point L97-1(lines 86 195) no Hoare annotation was computed. [2021-12-27 21:55:45,287 INFO L854 garLoopResultBuilder]: At program point L188(lines 34 223) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~blastFlag~0#1| 3))) (or (= |ULTIMATE.start_main_~blastFlag~0#1| 1) (and (not (= |ULTIMATE.start_main_~s__hit~0#1| 0)) .cse0 (<= 8640 |ULTIMATE.start_main_~s__state~0#1|)) (= |ULTIMATE.start_main_~blastFlag~0#1| 2) (and (<= 8672 |ULTIMATE.start_main_~s__state~0#1|) .cse0) (= |ULTIMATE.start_main_~blastFlag~0#1| 0))) [2021-12-27 21:55:45,287 INFO L858 garLoopResultBuilder]: For program point L56(lines 56 209) no Hoare annotation was computed. [2021-12-27 21:55:45,287 INFO L858 garLoopResultBuilder]: For program point L147(lines 147 151) no Hoare annotation was computed. [2021-12-27 21:55:45,287 INFO L854 garLoopResultBuilder]: At program point L81(lines 80 197) the Hoare annotation is: (let ((.cse0 (<= 8640 |ULTIMATE.start_main_~s__state~0#1|))) (or (and .cse0 (= |ULTIMATE.start_main_~blastFlag~0#1| 0)) (and (= |ULTIMATE.start_main_~blastFlag~0#1| 1) .cse0) (and (not (= |ULTIMATE.start_main_~s__hit~0#1| 0)) (= |ULTIMATE.start_main_~blastFlag~0#1| 3) .cse0) (and (= |ULTIMATE.start_main_~blastFlag~0#1| 2) .cse0))) [2021-12-27 21:55:45,288 INFO L858 garLoopResultBuilder]: For program point L48(lines 48 213) no Hoare annotation was computed. [2021-12-27 21:55:45,288 INFO L854 garLoopResultBuilder]: At program point L73(lines 72 201) the Hoare annotation is: (or (= (+ (- 2) |ULTIMATE.start_main_~blastFlag~0#1|) 0) (= |ULTIMATE.start_main_~blastFlag~0#1| 0) (= (+ (- 1) |ULTIMATE.start_main_~blastFlag~0#1|) 0)) [2021-12-27 21:55:45,288 INFO L854 garLoopResultBuilder]: At program point L65(lines 64 205) the Hoare annotation is: (or (= (+ (- 2) |ULTIMATE.start_main_~blastFlag~0#1|) 0) (= |ULTIMATE.start_main_~blastFlag~0#1| 0) (= (+ (- 1) |ULTIMATE.start_main_~blastFlag~0#1|) 0)) [2021-12-27 21:55:45,288 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-27 21:55:45,288 INFO L854 garLoopResultBuilder]: At program point L57(lines 56 209) the Hoare annotation is: (or (= (+ (- 2) |ULTIMATE.start_main_~blastFlag~0#1|) 0) (= |ULTIMATE.start_main_~blastFlag~0#1| 0) (= (+ (- 1) |ULTIMATE.start_main_~blastFlag~0#1|) 0)) [2021-12-27 21:55:45,288 INFO L858 garLoopResultBuilder]: For program point L90-1(lines 90 92) no Hoare annotation was computed. [2021-12-27 21:55:45,288 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 227) no Hoare annotation was computed. [2021-12-27 21:55:45,289 INFO L858 garLoopResultBuilder]: For program point L181-1(lines 86 195) no Hoare annotation was computed. [2021-12-27 21:55:45,289 INFO L854 garLoopResultBuilder]: At program point L49(lines 48 213) the Hoare annotation is: (let ((.cse0 (= (+ (- 8512) |ULTIMATE.start_main_~s__state~0#1|) 0))) (or (and .cse0 (= (+ (- 1) |ULTIMATE.start_main_~blastFlag~0#1|) 0)) (and (= |ULTIMATE.start_main_~blastFlag~0#1| 0) .cse0) (and (= (+ (- 2) |ULTIMATE.start_main_~blastFlag~0#1|) 0) .cse0))) [2021-12-27 21:55:45,289 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 216) no Hoare annotation was computed. [2021-12-27 21:55:45,289 INFO L854 garLoopResultBuilder]: At program point L132(lines 125 134) the Hoare annotation is: (or (= (+ (- 2) |ULTIMATE.start_main_~blastFlag~0#1|) 0) (= |ULTIMATE.start_main_~blastFlag~0#1| 0) (= (+ (- 1) |ULTIMATE.start_main_~blastFlag~0#1|) 0)) [2021-12-27 21:55:45,289 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-27 21:55:45,289 INFO L854 garLoopResultBuilder]: At program point L124(lines 117 135) the Hoare annotation is: (or (= (+ (- 2) |ULTIMATE.start_main_~blastFlag~0#1|) 0) (= |ULTIMATE.start_main_~blastFlag~0#1| 0) (= (+ (- 1) |ULTIMATE.start_main_~blastFlag~0#1|) 0)) [2021-12-27 21:55:45,289 INFO L858 garLoopResultBuilder]: For program point L174-1(lines 174 176) no Hoare annotation was computed. [2021-12-27 21:55:45,289 INFO L854 garLoopResultBuilder]: At program point L42(lines 41 216) the Hoare annotation is: (or (= (+ (- 2) |ULTIMATE.start_main_~blastFlag~0#1|) 0) (= |ULTIMATE.start_main_~blastFlag~0#1| 0) (= (+ (- 1) |ULTIMATE.start_main_~blastFlag~0#1|) 0)) [2021-12-27 21:55:45,290 INFO L858 garLoopResultBuilder]: For program point L117(lines 117 135) no Hoare annotation was computed. [2021-12-27 21:55:45,290 INFO L858 garLoopResultBuilder]: For program point L84(lines 84 195) no Hoare annotation was computed. [2021-12-27 21:55:45,290 INFO L858 garLoopResultBuilder]: For program point L76(lines 76 199) no Hoare annotation was computed. [2021-12-27 21:55:45,290 INFO L858 garLoopResultBuilder]: For program point L68(lines 68 203) no Hoare annotation was computed. [2021-12-27 21:55:45,290 INFO L858 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-12-27 21:55:45,292 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:55:45,293 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-27 21:55:45,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 09:55:45 BoogieIcfgContainer [2021-12-27 21:55:45,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-27 21:55:45,306 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-27 21:55:45,306 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-27 21:55:45,306 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-27 21:55:45,306 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 09:55:43" (3/4) ... [2021-12-27 21:55:45,308 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-27 21:55:45,315 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-12-27 21:55:45,315 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-27 21:55:45,315 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-27 21:55:45,315 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-27 21:55:45,337 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-27 21:55:45,337 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-27 21:55:45,337 INFO L158 Benchmark]: Toolchain (without parser) took 2078.57ms. Allocated memory was 73.4MB in the beginning and 111.1MB in the end (delta: 37.7MB). Free memory was 52.3MB in the beginning and 49.0MB in the end (delta: 3.2MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. [2021-12-27 21:55:45,338 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 73.4MB. Free memory was 53.8MB in the beginning and 53.8MB in the end (delta: 31.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 21:55:45,338 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.60ms. Allocated memory is still 73.4MB. Free memory was 52.1MB in the beginning and 54.7MB in the end (delta: -2.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-27 21:55:45,338 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.86ms. Allocated memory is still 73.4MB. Free memory was 54.7MB in the beginning and 52.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 21:55:45,338 INFO L158 Benchmark]: Boogie Preprocessor took 32.60ms. Allocated memory is still 73.4MB. Free memory was 52.9MB in the beginning and 51.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-27 21:55:45,338 INFO L158 Benchmark]: RCFGBuilder took 349.78ms. Allocated memory is still 73.4MB. Free memory was 51.8MB in the beginning and 39.7MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-27 21:55:45,339 INFO L158 Benchmark]: TraceAbstraction took 1407.52ms. Allocated memory was 73.4MB in the beginning and 111.1MB in the end (delta: 37.7MB). Free memory was 39.2MB in the beginning and 53.2MB in the end (delta: -14.0MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. [2021-12-27 21:55:45,339 INFO L158 Benchmark]: Witness Printer took 31.06ms. Allocated memory is still 111.1MB. Free memory was 53.2MB in the beginning and 49.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-27 21:55:45,340 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 73.4MB. Free memory was 53.8MB in the beginning and 53.8MB in the end (delta: 31.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 224.60ms. Allocated memory is still 73.4MB. Free memory was 52.1MB in the beginning and 54.7MB in the end (delta: -2.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.86ms. Allocated memory is still 73.4MB. Free memory was 54.7MB in the beginning and 52.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.60ms. Allocated memory is still 73.4MB. Free memory was 52.9MB in the beginning and 51.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 349.78ms. Allocated memory is still 73.4MB. Free memory was 51.8MB in the beginning and 39.7MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1407.52ms. Allocated memory was 73.4MB in the beginning and 111.1MB in the end (delta: 37.7MB). Free memory was 39.2MB in the beginning and 53.2MB in the end (delta: -14.0MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. * Witness Printer took 31.06ms. Allocated memory is still 111.1MB. Free memory was 53.2MB in the beginning and 49.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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: 227]: 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, 46 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 8, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 244 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 244 mSDsluCounter, 992 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 321 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 238 IncrementalHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 671 mSDtfsCounter, 238 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=262occurred in iteration=6, InterpolantAutomatonStates: 24, 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, 8 MinimizatonAttempts, 12 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 18 PreInvPairs, 85 NumberOfFragments, 298 HoareAnnotationTreeSize, 18 FomulaSimplifications, 124 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 18 FomulaSimplificationsInter, 71 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 262 NumberOfCodeBlocks, 262 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 254 ConstructedInterpolants, 0 QuantifiedInterpolants, 516 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 218/218 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: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: (-2 + blastFlag == 0 || blastFlag == 0) || -1 + blastFlag == 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: (((8672 <= s__state && blastFlag == 0) || (8672 <= s__state && blastFlag == 2)) || (8672 <= s__state && blastFlag == 1)) || (8672 <= s__state && blastFlag == 3) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 80]: Loop Invariant Derived loop invariant: (((8640 <= s__state && blastFlag == 0) || (blastFlag == 1 && 8640 <= s__state)) || ((!(s__hit == 0) && blastFlag == 3) && 8640 <= s__state)) || (blastFlag == 2 && 8640 <= s__state) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (-2 + blastFlag == 0 || blastFlag == 0) || -1 + blastFlag == 0 - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: (((8640 <= s__state && blastFlag == 0) || (blastFlag == 1 && 8640 <= s__state)) || ((!(s__hit == 0) && blastFlag == 3) && 8640 <= s__state)) || (blastFlag == 2 && 8640 <= s__state) - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: (-2 + blastFlag == 0 || blastFlag == 0) || -1 + blastFlag == 0 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: ((-8512 + s__state == 0 && -1 + blastFlag == 0) || (blastFlag == 0 && -8512 + s__state == 0)) || (-2 + blastFlag == 0 && -8512 + s__state == 0) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 117]: Loop Invariant Derived loop invariant: (-2 + blastFlag == 0 || blastFlag == 0) || -1 + blastFlag == 0 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (-2 + blastFlag == 0 || blastFlag == 0) || -1 + blastFlag == 0 - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: (-2 + blastFlag == 0 || blastFlag == 0) || -1 + blastFlag == 0 - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: (-2 + blastFlag == 0 || blastFlag == 0) || -1 + blastFlag == 0 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: (-2 + blastFlag == 0 || blastFlag == 0) || -1 + blastFlag == 0 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (-2 + blastFlag == 0 || blastFlag == 0) || -1 + blastFlag == 0 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((blastFlag == 1 || ((!(s__hit == 0) && blastFlag == 3) && 8640 <= s__state)) || blastFlag == 2) || (8672 <= s__state && blastFlag == 3)) || blastFlag == 0 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: (-2 + blastFlag == 0 || blastFlag == 0) || -1 + blastFlag == 0 RESULT: Ultimate proved your program to be correct! [2021-12-27 21:55:45,385 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