./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_1b.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 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 10:56:35,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 10:56:35,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 10:56:35,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 10:56:35,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 10:56:35,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 10:56:35,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 10:56:35,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 10:56:35,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 10:56:35,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 10:56:35,346 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 10:56:35,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 10:56:35,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 10:56:35,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 10:56:35,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 10:56:35,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 10:56:35,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 10:56:35,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 10:56:35,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 10:56:35,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 10:56:35,357 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 10:56:35,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 10:56:35,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 10:56:35,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 10:56:35,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 10:56:35,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 10:56:35,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 10:56:35,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 10:56:35,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 10:56:35,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 10:56:35,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 10:56:35,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 10:56:35,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 10:56:35,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 10:56:35,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 10:56:35,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 10:56:35,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 10:56:35,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 10:56:35,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 10:56:35,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 10:56:35,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 10:56:35,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 10:56:35,373 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 10:56:35,390 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 10:56:35,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 10:56:35,391 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 10:56:35,391 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 10:56:35,392 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 10:56:35,392 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 10:56:35,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 10:56:35,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 10:56:35,393 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 10:56:35,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 10:56:35,394 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 10:56:35,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 10:56:35,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 10:56:35,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 10:56:35,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 10:56:35,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 10:56:35,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 10:56:35,395 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 10:56:35,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 10:56:35,396 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 10:56:35,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 10:56:35,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 10:56:35,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 10:56:35,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 10:56:35,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:56:35,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 10:56:35,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 10:56:35,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 10:56:35,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 10:56:35,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 10:56:35,398 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 10:56:35,398 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 10:56:35,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 10:56:35,399 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db [2022-07-19 10:56:35,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 10:56:35,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 10:56:35,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 10:56:35,617 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 10:56:35,617 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 10:56:35,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2022-07-19 10:56:35,676 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5520c27fe/bab5255a53cc4a4e83ab88f1dd786db4/FLAGd552ad023 [2022-07-19 10:56:36,084 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 10:56:36,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2022-07-19 10:56:36,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5520c27fe/bab5255a53cc4a4e83ab88f1dd786db4/FLAGd552ad023 [2022-07-19 10:56:36,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5520c27fe/bab5255a53cc4a4e83ab88f1dd786db4 [2022-07-19 10:56:36,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 10:56:36,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 10:56:36,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 10:56:36,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 10:56:36,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 10:56:36,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:56:36" (1/1) ... [2022-07-19 10:56:36,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c0b2f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:56:36, skipping insertion in model container [2022-07-19 10:56:36,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:56:36" (1/1) ... [2022-07-19 10:56:36,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 10:56:36,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 10:56:36,320 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_1b.cil.c[8244,8257] [2022-07-19 10:56:36,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:56:36,336 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 10:56:36,350 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_1b.cil.c[8244,8257] [2022-07-19 10:56:36,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:56:36,360 INFO L208 MainTranslator]: Completed translation [2022-07-19 10:56:36,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:56:36 WrapperNode [2022-07-19 10:56:36,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 10:56:36,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 10:56:36,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 10:56:36,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 10:56:36,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:56:36" (1/1) ... [2022-07-19 10:56:36,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:56:36" (1/1) ... [2022-07-19 10:56:36,385 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 75 [2022-07-19 10:56:36,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 10:56:36,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 10:56:36,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 10:56:36,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 10:56:36,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:56:36" (1/1) ... [2022-07-19 10:56:36,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:56:36" (1/1) ... [2022-07-19 10:56:36,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:56:36" (1/1) ... [2022-07-19 10:56:36,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:56:36" (1/1) ... [2022-07-19 10:56:36,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:56:36" (1/1) ... [2022-07-19 10:56:36,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:56:36" (1/1) ... [2022-07-19 10:56:36,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:56:36" (1/1) ... [2022-07-19 10:56:36,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 10:56:36,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 10:56:36,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 10:56:36,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 10:56:36,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:56:36" (1/1) ... [2022-07-19 10:56:36,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:56:36,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:56:36,431 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 10:56:36,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 10:56:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 10:56:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 10:56:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 10:56:36,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 10:56:36,509 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 10:56:36,510 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 10:56:36,599 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 10:56:36,603 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 10:56:36,606 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 10:56:36,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:56:36 BoogieIcfgContainer [2022-07-19 10:56:36,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 10:56:36,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 10:56:36,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 10:56:36,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 10:56:36,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:56:36" (1/3) ... [2022-07-19 10:56:36,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6971ad56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:56:36, skipping insertion in model container [2022-07-19 10:56:36,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:56:36" (2/3) ... [2022-07-19 10:56:36,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6971ad56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:56:36, skipping insertion in model container [2022-07-19 10:56:36,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:56:36" (3/3) ... [2022-07-19 10:56:36,615 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2022-07-19 10:56:36,627 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 10:56:36,627 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 10:56:36,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 10:56:36,671 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@611e2c3e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@176b83c [2022-07-19 10:56:36,671 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 10:56:36,675 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:56:36,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-19 10:56:36,683 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:56:36,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-19 10:56:36,684 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:56:36,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:56:36,689 INFO L85 PathProgramCache]: Analyzing trace with hash 28699838, now seen corresponding path program 1 times [2022-07-19 10:56:36,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:56:36,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652870848] [2022-07-19 10:56:36,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:56:36,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:56:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:56:36,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:56:36,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:56:36,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652870848] [2022-07-19 10:56:36,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652870848] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:56:36,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:56:36,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:56:36,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649880121] [2022-07-19 10:56:36,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:56:36,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:56:36,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:56:36,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:56:36,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:56:36,855 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 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) [2022-07-19 10:56:36,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:56:36,902 INFO L93 Difference]: Finished difference Result 65 states and 109 transitions. [2022-07-19 10:56:36,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:56:36,904 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 [2022-07-19 10:56:36,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:56:36,911 INFO L225 Difference]: With dead ends: 65 [2022-07-19 10:56:36,911 INFO L226 Difference]: Without dead ends: 35 [2022-07-19 10:56:36,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:56:36,917 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 23 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:56:36,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 53 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:56:36,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-19 10:56:36,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-07-19 10:56:36,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 34 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:56:36,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 49 transitions. [2022-07-19 10:56:36,945 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 49 transitions. Word has length 5 [2022-07-19 10:56:36,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:56:36,946 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 49 transitions. [2022-07-19 10:56:36,946 INFO L496 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) [2022-07-19 10:56:36,946 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 49 transitions. [2022-07-19 10:56:36,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-19 10:56:36,947 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:56:36,947 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:56:36,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 10:56:36,948 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:56:36,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:56:36,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1523322994, now seen corresponding path program 1 times [2022-07-19 10:56:36,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:56:36,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025624785] [2022-07-19 10:56:36,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:56:36,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:56:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:56:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:56:36,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:56:36,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025624785] [2022-07-19 10:56:36,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025624785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:56:36,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:56:36,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:56:36,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249164253] [2022-07-19 10:56:36,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:56:36,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:56:36,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:56:36,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:56:36,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:56:36,982 INFO L87 Difference]: Start difference. First operand 35 states and 49 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:56:37,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:56:37,014 INFO L93 Difference]: Finished difference Result 66 states and 99 transitions. [2022-07-19 10:56:37,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:56:37,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-19 10:56:37,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:56:37,016 INFO L225 Difference]: With dead ends: 66 [2022-07-19 10:56:37,016 INFO L226 Difference]: Without dead ends: 48 [2022-07-19 10:56:37,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:56:37,018 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 15 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:56:37,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 57 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:56:37,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-19 10:56:37,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-07-19 10:56:37,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.425531914893617) internal successors, (67), 47 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:56:37,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 67 transitions. [2022-07-19 10:56:37,027 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 67 transitions. Word has length 10 [2022-07-19 10:56:37,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:56:37,027 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 67 transitions. [2022-07-19 10:56:37,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:56:37,027 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 67 transitions. [2022-07-19 10:56:37,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-19 10:56:37,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:56:37,028 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:56:37,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 10:56:37,029 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:56:37,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:56:37,030 INFO L85 PathProgramCache]: Analyzing trace with hash 864936600, now seen corresponding path program 1 times [2022-07-19 10:56:37,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:56:37,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136572503] [2022-07-19 10:56:37,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:56:37,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:56:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:56:37,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:56:37,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:56:37,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136572503] [2022-07-19 10:56:37,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136572503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:56:37,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:56:37,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:56:37,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117469971] [2022-07-19 10:56:37,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:56:37,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:56:37,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:56:37,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:56:37,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:56:37,079 INFO L87 Difference]: Start difference. First operand 48 states and 67 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:56:37,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:56:37,132 INFO L93 Difference]: Finished difference Result 89 states and 127 transitions. [2022-07-19 10:56:37,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:56:37,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-07-19 10:56:37,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:56:37,134 INFO L225 Difference]: With dead ends: 89 [2022-07-19 10:56:37,134 INFO L226 Difference]: Without dead ends: 58 [2022-07-19 10:56:37,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:56:37,136 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 3 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:56:37,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 45 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:56:37,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-07-19 10:56:37,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2022-07-19 10:56:37,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 55 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:56:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2022-07-19 10:56:37,147 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 17 [2022-07-19 10:56:37,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:56:37,148 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2022-07-19 10:56:37,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:56:37,148 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2022-07-19 10:56:37,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-19 10:56:37,149 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:56:37,150 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:56:37,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 10:56:37,150 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:56:37,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:56:37,151 INFO L85 PathProgramCache]: Analyzing trace with hash 163872022, now seen corresponding path program 1 times [2022-07-19 10:56:37,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:56:37,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954110393] [2022-07-19 10:56:37,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:56:37,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:56:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:56:37,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 10:56:37,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:56:37,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954110393] [2022-07-19 10:56:37,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954110393] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:56:37,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:56:37,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:56:37,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300129003] [2022-07-19 10:56:37,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:56:37,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:56:37,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:56:37,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:56:37,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:56:37,216 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:56:37,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:56:37,274 INFO L93 Difference]: Finished difference Result 116 states and 163 transitions. [2022-07-19 10:56:37,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:56:37,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-19 10:56:37,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:56:37,276 INFO L225 Difference]: With dead ends: 116 [2022-07-19 10:56:37,277 INFO L226 Difference]: Without dead ends: 77 [2022-07-19 10:56:37,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:56:37,281 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 20 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:56:37,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 59 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:56:37,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-07-19 10:56:37,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2022-07-19 10:56:37,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.3783783783783783) internal successors, (102), 74 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:56:37,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2022-07-19 10:56:37,297 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 17 [2022-07-19 10:56:37,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:56:37,298 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2022-07-19 10:56:37,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:56:37,298 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2022-07-19 10:56:37,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-19 10:56:37,299 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:56:37,299 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:56:37,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 10:56:37,300 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:56:37,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:56:37,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1464847913, now seen corresponding path program 1 times [2022-07-19 10:56:37,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:56:37,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277003150] [2022-07-19 10:56:37,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:56:37,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:56:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:56:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 10:56:37,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:56:37,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277003150] [2022-07-19 10:56:37,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277003150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:56:37,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:56:37,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:56:37,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149212939] [2022-07-19 10:56:37,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:56:37,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:56:37,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:56:37,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:56:37,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:56:37,356 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:56:37,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:56:37,397 INFO L93 Difference]: Finished difference Result 144 states and 197 transitions. [2022-07-19 10:56:37,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:56:37,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-19 10:56:37,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:56:37,399 INFO L225 Difference]: With dead ends: 144 [2022-07-19 10:56:37,399 INFO L226 Difference]: Without dead ends: 57 [2022-07-19 10:56:37,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:56:37,401 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 13 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:56:37,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 35 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:56:37,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-19 10:56:37,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2022-07-19 10:56:37,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 54 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:56:37,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2022-07-19 10:56:37,409 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 20 [2022-07-19 10:56:37,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:56:37,409 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2022-07-19 10:56:37,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:56:37,410 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2022-07-19 10:56:37,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-19 10:56:37,411 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:56:37,411 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:56:37,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 10:56:37,411 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:56:37,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:56:37,412 INFO L85 PathProgramCache]: Analyzing trace with hash -12347436, now seen corresponding path program 1 times [2022-07-19 10:56:37,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:56:37,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429031118] [2022-07-19 10:56:37,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:56:37,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:56:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:56:37,461 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 10:56:37,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:56:37,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429031118] [2022-07-19 10:56:37,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429031118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:56:37,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:56:37,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 10:56:37,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210154942] [2022-07-19 10:56:37,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:56:37,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 10:56:37,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:56:37,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 10:56:37,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:56:37,464 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:56:37,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:56:37,475 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2022-07-19 10:56:37,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 10:56:37,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 34 [2022-07-19 10:56:37,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:56:37,476 INFO L225 Difference]: With dead ends: 88 [2022-07-19 10:56:37,477 INFO L226 Difference]: Without dead ends: 0 [2022-07-19 10:56:37,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 10:56:37,478 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 47 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 [2022-07-19 10:56:37,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 47 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:56:37,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-19 10:56:37,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-19 10:56:37,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:56:37,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-19 10:56:37,480 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2022-07-19 10:56:37,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:56:37,481 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-19 10:56:37,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:56:37,481 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-19 10:56:37,481 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-19 10:56:37,484 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 10:56:37,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 10:56:37,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-19 10:56:37,611 INFO L899 garLoopResultBuilder]: For program point L89-1(lines 65 118) no Hoare annotation was computed. [2022-07-19 10:56:37,611 INFO L902 garLoopResultBuilder]: At program point L151(lines 20 152) the Hoare annotation is: true [2022-07-19 10:56:37,612 INFO L899 garLoopResultBuilder]: For program point L81(lines 81 85) no Hoare annotation was computed. [2022-07-19 10:56:37,612 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 139) no Hoare annotation was computed. [2022-07-19 10:56:37,612 INFO L899 garLoopResultBuilder]: For program point L69-1(lines 65 118) no Hoare annotation was computed. [2022-07-19 10:56:37,612 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-19 10:56:37,612 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-19 10:56:37,612 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 120) no Hoare annotation was computed. [2022-07-19 10:56:37,613 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-19 10:56:37,613 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 122) no Hoare annotation was computed. [2022-07-19 10:56:37,613 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 150) no Hoare annotation was computed. [2022-07-19 10:56:37,613 INFO L902 garLoopResultBuilder]: At program point L148(lines 20 152) the Hoare annotation is: true [2022-07-19 10:56:37,614 INFO L895 garLoopResultBuilder]: At program point L111(lines 29 146) the Hoare annotation is: (or (and (not (= |ULTIMATE.start_main_~s__hit~0#1| 0)) (= |ULTIMATE.start_main_~blastFlag~0#1| 3) (<= 8640 |ULTIMATE.start_main_~s__state~0#1|)) (= |ULTIMATE.start_main_~blastFlag~0#1| 2) (= |ULTIMATE.start_main_~blastFlag~0#1| 0)) [2022-07-19 10:56:37,614 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 109) no Hoare annotation was computed. [2022-07-19 10:56:37,615 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 136) no Hoare annotation was computed. [2022-07-19 10:56:37,615 INFO L895 garLoopResultBuilder]: At program point L37(lines 36 139) the Hoare annotation is: (or (= (+ (- 2) |ULTIMATE.start_main_~blastFlag~0#1|) 0) (= |ULTIMATE.start_main_~blastFlag~0#1| 0)) [2022-07-19 10:56:37,615 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-19 10:56:37,615 INFO L895 garLoopResultBuilder]: At program point L62(lines 61 120) 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 (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))) [2022-07-19 10:56:37,616 INFO L895 garLoopResultBuilder]: At program point L58(lines 57 122) 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 (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))) [2022-07-19 10:56:37,616 INFO L895 garLoopResultBuilder]: At program point L108(lines 20 152) the Hoare annotation is: false [2022-07-19 10:56:37,616 INFO L895 garLoopResultBuilder]: At program point L42(lines 41 136) the Hoare annotation is: (let ((.cse0 (= (+ (- 8512) |ULTIMATE.start_main_~s__state~0#1|) 0))) (or (and (= |ULTIMATE.start_main_~blastFlag~0#1| 0) .cse0) (and (= (+ (- 2) |ULTIMATE.start_main_~blastFlag~0#1|) 0) .cse0))) [2022-07-19 10:56:37,616 INFO L899 garLoopResultBuilder]: For program point L104-1(lines 65 118) no Hoare annotation was computed. [2022-07-19 10:56:37,616 INFO L899 garLoopResultBuilder]: For program point L100-1(lines 65 118) no Hoare annotation was computed. [2022-07-19 10:56:37,618 INFO L899 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2022-07-19 10:56:37,622 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-19 10:56:37,623 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 10:56:37,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 10:56:37 BoogieIcfgContainer [2022-07-19 10:56:37,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 10:56:37,667 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 10:56:37,667 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 10:56:37,667 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 10:56:37,668 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:56:36" (3/4) ... [2022-07-19 10:56:37,670 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 10:56:37,677 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-07-19 10:56:37,677 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-19 10:56:37,677 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 10:56:37,678 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 10:56:37,715 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 10:56:37,716 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 10:56:37,716 INFO L158 Benchmark]: Toolchain (without parser) took 1609.76ms. Allocated memory was 104.9MB in the beginning and 136.3MB in the end (delta: 31.5MB). Free memory was 72.4MB in the beginning and 107.2MB in the end (delta: -34.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 10:56:37,717 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 104.9MB. Free memory was 59.4MB in the beginning and 59.3MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 10:56:37,717 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.73ms. Allocated memory is still 104.9MB. Free memory was 72.2MB in the beginning and 78.9MB in the end (delta: -6.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 10:56:37,717 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.94ms. Allocated memory is still 104.9MB. Free memory was 78.9MB in the beginning and 77.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 10:56:37,718 INFO L158 Benchmark]: Boogie Preprocessor took 14.51ms. Allocated memory is still 104.9MB. Free memory was 77.2MB in the beginning and 76.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 10:56:37,718 INFO L158 Benchmark]: RCFGBuilder took 206.58ms. Allocated memory is still 104.9MB. Free memory was 76.1MB in the beginning and 66.4MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 10:56:37,718 INFO L158 Benchmark]: TraceAbstraction took 1055.74ms. Allocated memory was 104.9MB in the beginning and 136.3MB in the end (delta: 31.5MB). Free memory was 66.0MB in the beginning and 109.3MB in the end (delta: -43.3MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. [2022-07-19 10:56:37,719 INFO L158 Benchmark]: Witness Printer took 48.74ms. Allocated memory is still 136.3MB. Free memory was 109.3MB in the beginning and 107.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 10:56:37,721 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 104.9MB. Free memory was 59.4MB in the beginning and 59.3MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.73ms. Allocated memory is still 104.9MB. Free memory was 72.2MB in the beginning and 78.9MB in the end (delta: -6.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.94ms. Allocated memory is still 104.9MB. Free memory was 78.9MB in the beginning and 77.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.51ms. Allocated memory is still 104.9MB. Free memory was 77.2MB in the beginning and 76.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 206.58ms. Allocated memory is still 104.9MB. Free memory was 76.1MB in the beginning and 66.4MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1055.74ms. Allocated memory was 104.9MB in the beginning and 136.3MB in the end (delta: 31.5MB). Free memory was 66.0MB in the beginning and 109.3MB in the end (delta: -43.3MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. * Witness Printer took 48.74ms. Allocated memory is still 136.3MB. Free memory was 109.3MB in the beginning and 107.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 150]: 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, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 76 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 76 mSDsluCounter, 296 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 94 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 90 IncrementalHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 202 mSDtfsCounter, 90 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=4, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 31 NumberOfFragments, 103 HoareAnnotationTreeSize, 8 FomulaSimplifications, 42 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 30 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 188 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 43/43 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: 61]: Loop Invariant Derived loop invariant: ((8640 <= s__state && blastFlag == 0) || ((!(s__hit == 0) && blastFlag == 3) && 8640 <= s__state)) || (blastFlag == 2 && 8640 <= s__state) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (((!(s__hit == 0) && blastFlag == 3) && 8640 <= s__state) || blastFlag == 2) || blastFlag == 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((8640 <= s__state && blastFlag == 0) || ((!(s__hit == 0) && blastFlag == 3) && 8640 <= s__state)) || (blastFlag == 2 && 8640 <= s__state) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (blastFlag == 0 && -8512 + s__state == 0) || (-2 + blastFlag == 0 && -8512 + s__state == 0) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: -2 + blastFlag == 0 || blastFlag == 0 RESULT: Ultimate proved your program to be correct! [2022-07-19 10:56:37,770 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