./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float2.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/floats-cbmc-regression/float2.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 bcfb96d73d3159acff3d0fedafe635e3c1fa3ca1ecc4b177029539dd1ac5d911 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:31:39,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:31:39,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:31:39,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:31:39,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:31:39,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:31:39,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:31:39,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:31:39,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:31:39,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:31:39,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:31:39,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:31:39,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:31:39,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:31:39,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:31:39,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:31:39,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:31:39,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:31:39,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:31:39,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:31:39,719 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:31:39,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:31:39,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:31:39,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:31:39,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:31:39,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:31:39,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:31:39,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:31:39,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:31:39,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:31:39,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:31:39,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:31:39,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:31:39,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:31:39,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:31:39,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:31:39,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:31:39,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:31:39,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:31:39,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:31:39,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:31:39,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:31:39,733 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 13:31:39,757 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:31:39,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:31:39,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:31:39,758 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:31:39,758 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:31:39,758 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:31:39,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:31:39,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:31:39,759 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:31:39,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:31:39,760 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:31:39,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 13:31:39,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:31:39,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:31:39,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:31:39,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:31:39,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:31:39,761 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:31:39,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:31:39,761 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:31:39,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:31:39,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:31:39,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:31:39,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:31:39,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:31:39,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:31:39,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:31:39,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:31:39,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 13:31:39,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 13:31:39,763 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:31:39,763 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:31:39,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:31:39,764 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcfb96d73d3159acff3d0fedafe635e3c1fa3ca1ecc4b177029539dd1ac5d911 [2022-07-19 13:31:39,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:31:39,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:31:39,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:31:39,942 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:31:39,942 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:31:39,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float2.c [2022-07-19 13:31:39,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ab3bd841/95e3068d40c44454b26d81d1df578fb4/FLAG41457c4b9 [2022-07-19 13:31:40,341 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:31:40,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float2.c [2022-07-19 13:31:40,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ab3bd841/95e3068d40c44454b26d81d1df578fb4/FLAG41457c4b9 [2022-07-19 13:31:40,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ab3bd841/95e3068d40c44454b26d81d1df578fb4 [2022-07-19 13:31:40,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:31:40,356 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:31:40,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:31:40,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:31:40,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:31:40,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:31:40" (1/1) ... [2022-07-19 13:31:40,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d5bb001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:40, skipping insertion in model container [2022-07-19 13:31:40,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:31:40" (1/1) ... [2022-07-19 13:31:40,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:31:40,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:31:40,469 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/floats-cbmc-regression/float2.c[366,379] [2022-07-19 13:31:40,471 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/floats-cbmc-regression/float2.c[420,433] [2022-07-19 13:31:40,471 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/floats-cbmc-regression/float2.c[493,506] [2022-07-19 13:31:40,472 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/floats-cbmc-regression/float2.c[557,570] [2022-07-19 13:31:40,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:31:40,478 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:31:40,490 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/floats-cbmc-regression/float2.c[366,379] [2022-07-19 13:31:40,491 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/floats-cbmc-regression/float2.c[420,433] [2022-07-19 13:31:40,491 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/floats-cbmc-regression/float2.c[493,506] [2022-07-19 13:31:40,492 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/floats-cbmc-regression/float2.c[557,570] [2022-07-19 13:31:40,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:31:40,502 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:31:40,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:40 WrapperNode [2022-07-19 13:31:40,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:31:40,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:31:40,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:31:40,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:31:40,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:40" (1/1) ... [2022-07-19 13:31:40,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:40" (1/1) ... [2022-07-19 13:31:40,525 INFO L137 Inliner]: procedures = 11, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2022-07-19 13:31:40,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:31:40,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:31:40,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:31:40,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:31:40,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:40" (1/1) ... [2022-07-19 13:31:40,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:40" (1/1) ... [2022-07-19 13:31:40,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:40" (1/1) ... [2022-07-19 13:31:40,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:40" (1/1) ... [2022-07-19 13:31:40,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:40" (1/1) ... [2022-07-19 13:31:40,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:40" (1/1) ... [2022-07-19 13:31:40,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:40" (1/1) ... [2022-07-19 13:31:40,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:31:40,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:31:40,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:31:40,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:31:40,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:40" (1/1) ... [2022-07-19 13:31:40,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:31:40,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:31:40,565 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 13:31:40,566 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 13:31:40,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:31:40,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:31:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:31:40,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 13:31:40,622 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:31:40,623 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:31:40,683 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:31:40,686 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:31:40,687 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:31:40,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:31:40 BoogieIcfgContainer [2022-07-19 13:31:40,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:31:40,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:31:40,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:31:40,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:31:40,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:31:40" (1/3) ... [2022-07-19 13:31:40,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37baaa98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:31:40, skipping insertion in model container [2022-07-19 13:31:40,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:40" (2/3) ... [2022-07-19 13:31:40,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37baaa98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:31:40, skipping insertion in model container [2022-07-19 13:31:40,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:31:40" (3/3) ... [2022-07-19 13:31:40,694 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2022-07-19 13:31:40,703 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:31:40,703 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-19 13:31:40,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:31:40,775 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@6fdc455e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@8aab0ab [2022-07-19 13:31:40,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 13:31:40,786 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 19 states have internal predecessors, (23), 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 13:31:40,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-19 13:31:40,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:31:40,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-19 13:31:40,797 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-19 13:31:40,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:31:40,800 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2022-07-19 13:31:40,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:31:40,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550544629] [2022-07-19 13:31:40,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:31:40,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:31:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:31:40,865 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 13:31:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:31:40,893 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 13:31:40,894 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 13:31:40,896 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-19 13:31:40,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-19 13:31:40,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-07-19 13:31:40,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-19 13:31:40,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 13:31:40,903 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 13:31:40,906 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 13:31:40,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 01:31:40 BoogieIcfgContainer [2022-07-19 13:31:40,923 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 13:31:40,925 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 13:31:40,925 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 13:31:40,925 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 13:31:40,925 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:31:40" (3/4) ... [2022-07-19 13:31:40,928 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 13:31:40,928 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 13:31:40,930 INFO L158 Benchmark]: Toolchain (without parser) took 572.74ms. Allocated memory is still 104.9MB. Free memory was 78.9MB in the beginning and 57.3MB in the end (delta: 21.5MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2022-07-19 13:31:40,930 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 104.9MB. Free memory is still 62.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:31:40,931 INFO L158 Benchmark]: CACSL2BoogieTranslator took 145.39ms. Allocated memory is still 104.9MB. Free memory was 78.6MB in the beginning and 81.9MB in the end (delta: -3.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:31:40,932 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.88ms. Allocated memory is still 104.9MB. Free memory was 81.9MB in the beginning and 80.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:31:40,935 INFO L158 Benchmark]: Boogie Preprocessor took 17.99ms. Allocated memory is still 104.9MB. Free memory was 80.6MB in the beginning and 79.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:31:40,935 INFO L158 Benchmark]: RCFGBuilder took 142.71ms. Allocated memory is still 104.9MB. Free memory was 79.5MB in the beginning and 70.8MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 13:31:40,936 INFO L158 Benchmark]: TraceAbstraction took 233.80ms. Allocated memory is still 104.9MB. Free memory was 70.5MB in the beginning and 57.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 13:31:40,936 INFO L158 Benchmark]: Witness Printer took 3.61ms. Allocated memory is still 104.9MB. Free memory was 57.6MB in the beginning and 57.3MB in the end (delta: 302.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:31:40,941 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 104.9MB. Free memory is still 62.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 145.39ms. Allocated memory is still 104.9MB. Free memory was 78.6MB in the beginning and 81.9MB in the end (delta: -3.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.88ms. Allocated memory is still 104.9MB. Free memory was 81.9MB in the beginning and 80.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.99ms. Allocated memory is still 104.9MB. Free memory was 80.6MB in the beginning and 79.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 142.71ms. Allocated memory is still 104.9MB. Free memory was 79.5MB in the beginning and 70.8MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 233.80ms. Allocated memory is still 104.9MB. Free memory was 70.5MB in the beginning and 57.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 3.61ms. Allocated memory is still 104.9MB. Free memory was 57.6MB in the beginning and 57.3MB in the end (delta: 302.1kB). There was no memory consumed. 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 - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 12. Possible FailurePath: [L7] float a; [L8] double b; [L11] a=1.25L VAL [a=5/4] [L12] COND TRUE !(a==1.25) VAL [a=5/4] [L12] reach_error() VAL [a=5/4] - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-19 13:31:40,976 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/floats-cbmc-regression/float2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 bcfb96d73d3159acff3d0fedafe635e3c1fa3ca1ecc4b177029539dd1ac5d911 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:31:42,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:31:42,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:31:42,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:31:42,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:31:42,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:31:42,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:31:42,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:31:42,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:31:42,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:31:42,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:31:42,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:31:42,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:31:42,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:31:42,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:31:42,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:31:42,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:31:42,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:31:42,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:31:42,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:31:42,575 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:31:42,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:31:42,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:31:42,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:31:42,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:31:42,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:31:42,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:31:42,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:31:42,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:31:42,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:31:42,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:31:42,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:31:42,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:31:42,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:31:42,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:31:42,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:31:42,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:31:42,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:31:42,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:31:42,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:31:42,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:31:42,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:31:42,597 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 13:31:42,625 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:31:42,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:31:42,626 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:31:42,626 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:31:42,627 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:31:42,627 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:31:42,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:31:42,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:31:42,628 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:31:42,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:31:42,628 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:31:42,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:31:42,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:31:42,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:31:42,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:31:42,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:31:42,629 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 13:31:42,630 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 13:31:42,630 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 13:31:42,630 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:31:42,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:31:42,630 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:31:42,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:31:42,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:31:42,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:31:42,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:31:42,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:31:42,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:31:42,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:31:42,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:31:42,632 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 13:31:42,632 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 13:31:42,632 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:31:42,632 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:31:42,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:31:42,632 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 13:31:42,633 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcfb96d73d3159acff3d0fedafe635e3c1fa3ca1ecc4b177029539dd1ac5d911 [2022-07-19 13:31:42,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:31:42,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:31:42,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:31:42,937 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:31:42,939 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:31:42,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float2.c [2022-07-19 13:31:42,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/801262839/35f3f7fa004c41d799bb6c802ead8e35/FLAGfddb8c8d9 [2022-07-19 13:31:43,341 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:31:43,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float2.c [2022-07-19 13:31:43,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/801262839/35f3f7fa004c41d799bb6c802ead8e35/FLAGfddb8c8d9 [2022-07-19 13:31:43,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/801262839/35f3f7fa004c41d799bb6c802ead8e35 [2022-07-19 13:31:43,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:31:43,360 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:31:43,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:31:43,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:31:43,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:31:43,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3361fd31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43, skipping insertion in model container [2022-07-19 13:31:43,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:31:43,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:31:43,488 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/floats-cbmc-regression/float2.c[366,379] [2022-07-19 13:31:43,494 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/floats-cbmc-regression/float2.c[420,433] [2022-07-19 13:31:43,495 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/floats-cbmc-regression/float2.c[493,506] [2022-07-19 13:31:43,498 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/floats-cbmc-regression/float2.c[557,570] [2022-07-19 13:31:43,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:31:43,508 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:31:43,518 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/floats-cbmc-regression/float2.c[366,379] [2022-07-19 13:31:43,519 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/floats-cbmc-regression/float2.c[420,433] [2022-07-19 13:31:43,520 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/floats-cbmc-regression/float2.c[493,506] [2022-07-19 13:31:43,521 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/floats-cbmc-regression/float2.c[557,570] [2022-07-19 13:31:43,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:31:43,556 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:31:43,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43 WrapperNode [2022-07-19 13:31:43,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:31:43,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:31:43,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:31:43,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:31:43,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,579 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2022-07-19 13:31:43,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:31:43,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:31:43,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:31:43,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:31:43,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:31:43,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:31:43,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:31:43,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:31:43,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:31:43,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:31:43,631 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 13:31:43,663 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 13:31:43,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:31:43,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:31:43,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:31:43,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 13:31:43,722 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:31:43,723 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:31:43,959 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:31:43,963 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:31:43,963 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:31:43,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:31:43 BoogieIcfgContainer [2022-07-19 13:31:43,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:31:43,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:31:43,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:31:43,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:31:43,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:31:43" (1/3) ... [2022-07-19 13:31:43,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d13a9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:31:43, skipping insertion in model container [2022-07-19 13:31:43,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43" (2/3) ... [2022-07-19 13:31:43,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d13a9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:31:43, skipping insertion in model container [2022-07-19 13:31:43,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:31:43" (3/3) ... [2022-07-19 13:31:43,969 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2022-07-19 13:31:43,978 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:31:43,978 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-19 13:31:44,031 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:31:44,037 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@5c75aa0b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@28a5a884 [2022-07-19 13:31:44,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 13:31:44,040 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 19 states have internal predecessors, (23), 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 13:31:44,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-19 13:31:44,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:31:44,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-19 13:31:44,045 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-19 13:31:44,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:31:44,053 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2022-07-19 13:31:44,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:31:44,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492523853] [2022-07-19 13:31:44,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:31:44,062 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:31:44,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:31:44,064 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:31:44,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 13:31:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:31:44,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 13:31:44,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:31:44,174 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 13:31:44,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:31:44,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:31:44,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492523853] [2022-07-19 13:31:44,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492523853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:31:44,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:31:44,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:31:44,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723052653] [2022-07-19 13:31:44,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:31:44,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:31:44,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:31:44,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:31:44,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:31:44,198 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 19 states have internal predecessors, (23), 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 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 13:31:44,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:31:44,265 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-07-19 13:31:44,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:31:44,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-07-19 13:31:44,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:31:44,273 INFO L225 Difference]: With dead ends: 35 [2022-07-19 13:31:44,273 INFO L226 Difference]: Without dead ends: 15 [2022-07-19 13:31:44,275 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 13:31:44,283 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 13:31:44,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 16 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 13:31:44,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-19 13:31:44,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-07-19 13:31:44,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 14 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) [2022-07-19 13:31:44,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2022-07-19 13:31:44,307 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 4 [2022-07-19 13:31:44,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:31:44,308 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2022-07-19 13:31:44,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 13:31:44,308 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2022-07-19 13:31:44,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-19 13:31:44,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:31:44,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-19 13:31:44,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-19 13:31:44,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:31:44,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-19 13:31:44,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:31:44,520 INFO L85 PathProgramCache]: Analyzing trace with hash 889629862, now seen corresponding path program 1 times [2022-07-19 13:31:44,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:31:44,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104648335] [2022-07-19 13:31:44,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:31:44,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:31:44,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:31:44,523 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:31:44,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-19 13:31:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:31:44,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 13:31:44,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:31:44,564 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 13:31:44,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:31:44,564 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:31:44,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104648335] [2022-07-19 13:31:44,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104648335] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:31:44,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:31:44,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:31:44,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802089302] [2022-07-19 13:31:44,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:31:44,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:31:44,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:31:44,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:31:44,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:31:44,566 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 13:31:44,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:31:44,653 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2022-07-19 13:31:44,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:31:44,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-07-19 13:31:44,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:31:44,656 INFO L225 Difference]: With dead ends: 15 [2022-07-19 13:31:44,656 INFO L226 Difference]: Without dead ends: 13 [2022-07-19 13:31:44,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 13:31:44,658 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 13:31:44,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 13:31:44,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-19 13:31:44,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-07-19 13:31:44,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 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 13:31:44,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2022-07-19 13:31:44,662 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 6 [2022-07-19 13:31:44,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:31:44,662 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2022-07-19 13:31:44,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 13:31:44,663 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2022-07-19 13:31:44,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-19 13:31:44,663 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:31:44,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:31:44,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-19 13:31:44,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:31:44,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-19 13:31:44,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:31:44,865 INFO L85 PathProgramCache]: Analyzing trace with hash 235930184, now seen corresponding path program 1 times [2022-07-19 13:31:44,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:31:44,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490804164] [2022-07-19 13:31:44,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:31:44,866 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:31:44,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:31:44,867 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:31:44,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-19 13:31:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:31:44,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 13:31:44,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:31:44,904 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 13:31:44,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:31:44,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:31:44,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490804164] [2022-07-19 13:31:44,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490804164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:31:44,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:31:44,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:31:44,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904576730] [2022-07-19 13:31:44,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:31:44,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:31:44,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:31:44,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:31:44,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:31:44,907 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 13:31:45,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:31:45,021 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2022-07-19 13:31:45,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:31:45,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-07-19 13:31:45,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:31:45,022 INFO L225 Difference]: With dead ends: 13 [2022-07-19 13:31:45,022 INFO L226 Difference]: Without dead ends: 11 [2022-07-19 13:31:45,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:31:45,024 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 13:31:45,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 9 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 13:31:45,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-07-19 13:31:45,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-07-19 13:31:45,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.0) internal successors, (10), 10 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 13:31:45,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2022-07-19 13:31:45,026 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2022-07-19 13:31:45,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:31:45,026 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2022-07-19 13:31:45,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 13:31:45,026 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2022-07-19 13:31:45,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-19 13:31:45,027 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:31:45,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:31:45,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-19 13:31:45,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:31:45,235 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-19 13:31:45,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:31:45,235 INFO L85 PathProgramCache]: Analyzing trace with hash -904234870, now seen corresponding path program 1 times [2022-07-19 13:31:45,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:31:45,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138620600] [2022-07-19 13:31:45,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:31:45,236 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:31:45,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:31:45,237 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:31:45,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-19 13:31:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:31:45,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 13:31:45,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:31:45,284 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 13:31:45,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:31:45,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:31:45,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138620600] [2022-07-19 13:31:45,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138620600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:31:45,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:31:45,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:31:45,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201927210] [2022-07-19 13:31:45,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:31:45,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:31:45,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:31:45,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:31:45,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:31:45,289 INFO L87 Difference]: Start difference. First operand 11 states and 10 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 13:31:45,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:31:45,421 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2022-07-19 13:31:45,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:31:45,423 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 13:31:45,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:31:45,423 INFO L225 Difference]: With dead ends: 11 [2022-07-19 13:31:45,423 INFO L226 Difference]: Without dead ends: 0 [2022-07-19 13:31:45,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 13:31:45,424 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 13:31:45,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 13:31:45,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-19 13:31:45,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-19 13:31:45,425 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 13:31:45,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-19 13:31:45,425 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2022-07-19 13:31:45,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:31:45,425 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-19 13:31:45,425 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 13:31:45,425 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-19 13:31:45,425 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-19 13:31:45,427 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-19 13:31:45,427 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-19 13:31:45,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-07-19 13:31:45,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-19 13:31:45,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-19 13:31:45,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:31:45,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-19 13:31:45,632 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-19 13:31:45,632 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2022-07-19 13:31:45,632 INFO L899 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2022-07-19 13:31:45,632 INFO L899 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2022-07-19 13:31:45,632 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 23) no Hoare annotation was computed. [2022-07-19 13:31:45,632 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-07-19 13:31:45,633 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2022-07-19 13:31:45,633 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2022-07-19 13:31:45,633 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-07-19 13:31:45,633 INFO L899 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2022-07-19 13:31:45,633 INFO L899 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2022-07-19 13:31:45,633 INFO L899 garLoopResultBuilder]: For program point L5(lines 5 24) no Hoare annotation was computed. [2022-07-19 13:31:45,633 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-19 13:31:45,633 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-19 13:31:45,634 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-19 13:31:45,634 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2022-07-19 13:31:45,634 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-07-19 13:31:45,634 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-07-19 13:31:45,634 INFO L899 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2022-07-19 13:31:45,634 INFO L899 garLoopResultBuilder]: For program point L12-3(line 12) no Hoare annotation was computed. [2022-07-19 13:31:45,636 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-07-19 13:31:45,638 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 13:31:45,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 01:31:45 BoogieIcfgContainer [2022-07-19 13:31:45,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 13:31:45,641 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 13:31:45,641 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 13:31:45,641 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 13:31:45,642 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:31:43" (3/4) ... [2022-07-19 13:31:45,643 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 13:31:45,649 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-07-19 13:31:45,650 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-19 13:31:45,651 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 13:31:45,651 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 13:31:45,675 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 13:31:45,675 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 13:31:45,675 INFO L158 Benchmark]: Toolchain (without parser) took 2314.96ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 43.8MB in the beginning and 60.4MB in the end (delta: -16.6MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2022-07-19 13:31:45,676 INFO L158 Benchmark]: CDTParser took 0.68ms. Allocated memory is still 62.9MB. Free memory was 44.8MB in the beginning and 44.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:31:45,676 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.95ms. Allocated memory is still 62.9MB. Free memory was 43.6MB in the beginning and 47.2MB in the end (delta: -3.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-19 13:31:45,676 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.63ms. Allocated memory is still 62.9MB. Free memory was 47.0MB in the beginning and 45.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:31:45,676 INFO L158 Benchmark]: Boogie Preprocessor took 29.40ms. Allocated memory is still 62.9MB. Free memory was 45.6MB in the beginning and 44.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:31:45,677 INFO L158 Benchmark]: RCFGBuilder took 354.09ms. Allocated memory is still 62.9MB. Free memory was 44.5MB in the beginning and 36.6MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:31:45,677 INFO L158 Benchmark]: TraceAbstraction took 1675.63ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 36.1MB in the beginning and 63.0MB in the end (delta: -26.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:31:45,677 INFO L158 Benchmark]: Witness Printer took 33.59ms. Allocated memory is still 83.9MB. Free memory was 63.0MB in the beginning and 60.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:31:45,679 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68ms. Allocated memory is still 62.9MB. Free memory was 44.8MB in the beginning and 44.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.95ms. Allocated memory is still 62.9MB. Free memory was 43.6MB in the beginning and 47.2MB in the end (delta: -3.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.63ms. Allocated memory is still 62.9MB. Free memory was 47.0MB in the beginning and 45.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.40ms. Allocated memory is still 62.9MB. Free memory was 45.6MB in the beginning and 44.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 354.09ms. Allocated memory is still 62.9MB. Free memory was 44.5MB in the beginning and 36.6MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1675.63ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 36.1MB in the beginning and 63.0MB in the end (delta: -26.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 33.59ms. Allocated memory is still 83.9MB. Free memory was 63.0MB in the beginning and 60.4MB in the end (delta: 2.6MB). 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: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 23]: 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, 20 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 34 mSDtfsCounter, 37 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 46 SizeOfPredicates, 8 NumberOfNonLiveVariables, 84 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-19 13:31:45,716 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