./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8a6cb7e7408af12d21fe6db26ed13525a6aeea3116434a553f8758caff4c6db4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:10:28,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:10:28,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:10:29,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:10:29,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:10:29,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:10:29,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:10:29,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:10:29,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:10:29,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:10:29,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:10:29,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:10:29,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:10:29,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:10:29,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:10:29,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:10:29,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:10:29,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:10:29,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:10:29,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:10:29,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:10:29,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:10:29,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:10:29,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:10:29,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:10:29,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:10:29,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:10:29,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:10:29,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:10:29,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:10:29,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:10:29,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:10:29,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:10:29,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:10:29,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:10:29,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:10:29,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:10:29,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:10:29,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:10:29,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:10:29,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:10:29,088 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:10:29,132 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:10:29,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:10:29,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:10:29,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:10:29,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:10:29,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:10:29,141 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:10:29,141 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:10:29,142 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:10:29,142 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:10:29,143 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:10:29,143 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:10:29,144 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:10:29,144 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:10:29,144 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:10:29,144 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:10:29,145 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:10:29,145 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:10:29,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:10:29,146 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:10:29,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:10:29,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:10:29,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:10:29,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:10:29,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:10:29,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:10:29,149 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:10:29,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:10:29,150 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:10:29,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:10:29,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:10:29,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:10:29,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:10:29,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:10:29,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:10:29,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:10:29,152 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:10:29,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:10:29,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:10:29,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:10:29,153 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:10:29,153 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a6cb7e7408af12d21fe6db26ed13525a6aeea3116434a553f8758caff4c6db4 [2021-11-23 17:10:29,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:10:29,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:10:29,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:10:29,464 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:10:29,465 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:10:29,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/floats-cdfpl/square_2.i [2021-11-23 17:10:29,560 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/data/b2d1f8b18/6492660f6b70412283abd8b04ce94408/FLAG4bf5d00f0 [2021-11-23 17:10:30,041 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:10:30,042 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/sv-benchmarks/c/floats-cdfpl/square_2.i [2021-11-23 17:10:30,055 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/data/b2d1f8b18/6492660f6b70412283abd8b04ce94408/FLAG4bf5d00f0 [2021-11-23 17:10:30,383 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/data/b2d1f8b18/6492660f6b70412283abd8b04ce94408 [2021-11-23 17:10:30,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:10:30,388 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:10:30,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:10:30,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:10:30,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:10:30,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:10:30" (1/1) ... [2021-11-23 17:10:30,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4288545d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:30, skipping insertion in model container [2021-11-23 17:10:30,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:10:30" (1/1) ... [2021-11-23 17:10:30,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:10:30,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:10:30,707 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/sv-benchmarks/c/floats-cdfpl/square_2.i[1627,1640] [2021-11-23 17:10:30,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:10:30,723 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:10:30,742 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/sv-benchmarks/c/floats-cdfpl/square_2.i[1627,1640] [2021-11-23 17:10:30,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:10:30,760 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:10:30,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:30 WrapperNode [2021-11-23 17:10:30,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:10:30,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:10:30,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:10:30,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:10:30,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:30" (1/1) ... [2021-11-23 17:10:30,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:30" (1/1) ... [2021-11-23 17:10:30,802 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2021-11-23 17:10:30,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:10:30,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:10:30,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:10:30,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:10:30,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:30" (1/1) ... [2021-11-23 17:10:30,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:30" (1/1) ... [2021-11-23 17:10:30,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:30" (1/1) ... [2021-11-23 17:10:30,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:30" (1/1) ... [2021-11-23 17:10:30,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:30" (1/1) ... [2021-11-23 17:10:30,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:30" (1/1) ... [2021-11-23 17:10:30,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:30" (1/1) ... [2021-11-23 17:10:30,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:10:30,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:10:30,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:10:30,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:10:30,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:30" (1/1) ... [2021-11-23 17:10:30,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:10:30,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:10:30,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:10:30,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:10:30,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:10:30,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:10:30,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:10:30,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:10:31,015 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:10:31,017 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:10:31,139 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:10:31,178 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:10:31,183 INFO L158 Benchmark]: Toolchain (without parser) took 793.91ms. Allocated memory is still 121.6MB. Free memory was 89.0MB in the beginning and 86.9MB in the end (delta: 2.1MB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. [2021-11-23 17:10:31,192 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 79.7MB. Free memory was 32.8MB in the beginning and 32.7MB in the end (delta: 43.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:10:31,193 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.98ms. Allocated memory is still 121.6MB. Free memory was 88.8MB in the beginning and 97.8MB in the end (delta: -9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:10:31,194 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.13ms. Allocated memory is still 121.6MB. Free memory was 97.8MB in the beginning and 96.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:10:31,195 INFO L158 Benchmark]: Boogie Preprocessor took 37.71ms. Allocated memory is still 121.6MB. Free memory was 96.5MB in the beginning and 95.7MB in the end (delta: 829.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:10:31,198 INFO L158 Benchmark]: RCFGBuilder took 337.52ms. Allocated memory is still 121.6MB. Free memory was 95.7MB in the beginning and 86.9MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:10:31,202 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 79.7MB. Free memory was 32.8MB in the beginning and 32.7MB in the end (delta: 43.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 367.98ms. Allocated memory is still 121.6MB. Free memory was 88.8MB in the beginning and 97.8MB in the end (delta: -9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.13ms. Allocated memory is still 121.6MB. Free memory was 97.8MB in the beginning and 96.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.71ms. Allocated memory is still 121.6MB. Free memory was 96.5MB in the beginning and 95.7MB in the end (delta: 829.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 337.52ms. Allocated memory is still 121.6MB. Free memory was 95.7MB in the beginning and 86.9MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:10:31,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/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=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8a6cb7e7408af12d21fe6db26ed13525a6aeea3116434a553f8758caff4c6db4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:10:33,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:10:33,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:10:33,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:10:33,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:10:33,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:10:33,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:10:33,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:10:33,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:10:33,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:10:33,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:10:33,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:10:33,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:10:33,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:10:33,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:10:33,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:10:33,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:10:33,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:10:33,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:10:33,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:10:33,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:10:33,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:10:33,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:10:33,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:10:33,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:10:33,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:10:33,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:10:33,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:10:33,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:10:33,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:10:33,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:10:33,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:10:33,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:10:33,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:10:33,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:10:33,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:10:33,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:10:33,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:10:33,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:10:33,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:10:33,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:10:33,870 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:10:33,919 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:10:33,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:10:33,920 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:10:33,921 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:10:33,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:10:33,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:10:33,922 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:10:33,923 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:10:33,923 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:10:33,923 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:10:33,924 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:10:33,925 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:10:33,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:10:33,927 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:10:33,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:10:33,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:10:33,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:10:33,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:10:33,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:10:33,928 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:10:33,929 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:10:33,929 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:10:33,929 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:10:33,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:10:33,930 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:10:33,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:10:33,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:10:33,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:10:33,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:10:33,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:10:33,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:10:33,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:10:33,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:10:33,933 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:10:33,933 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:10:33,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:10:33,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:10:33,934 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:10:33,935 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a6cb7e7408af12d21fe6db26ed13525a6aeea3116434a553f8758caff4c6db4 [2021-11-23 17:10:34,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:10:34,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:10:34,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:10:34,428 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:10:34,429 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:10:34,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/floats-cdfpl/square_2.i [2021-11-23 17:10:34,500 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/data/d45a8658f/70ec948dd3124573b0abcbb4a33e6eaf/FLAGe8cde101c [2021-11-23 17:10:34,953 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:10:34,953 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/sv-benchmarks/c/floats-cdfpl/square_2.i [2021-11-23 17:10:34,961 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/data/d45a8658f/70ec948dd3124573b0abcbb4a33e6eaf/FLAGe8cde101c [2021-11-23 17:10:35,372 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/data/d45a8658f/70ec948dd3124573b0abcbb4a33e6eaf [2021-11-23 17:10:35,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:10:35,380 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:10:35,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:10:35,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:10:35,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:10:35,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:10:35" (1/1) ... [2021-11-23 17:10:35,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78d4d169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:35, skipping insertion in model container [2021-11-23 17:10:35,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:10:35" (1/1) ... [2021-11-23 17:10:35,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:10:35,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:10:35,610 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/sv-benchmarks/c/floats-cdfpl/square_2.i[1627,1640] [2021-11-23 17:10:35,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:10:35,627 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:10:35,660 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/sv-benchmarks/c/floats-cdfpl/square_2.i[1627,1640] [2021-11-23 17:10:35,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:10:35,699 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:10:35,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:35 WrapperNode [2021-11-23 17:10:35,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:10:35,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:10:35,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:10:35,701 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:10:35,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:35" (1/1) ... [2021-11-23 17:10:35,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:35" (1/1) ... [2021-11-23 17:10:35,740 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2021-11-23 17:10:35,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:10:35,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:10:35,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:10:35,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:10:35,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:35" (1/1) ... [2021-11-23 17:10:35,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:35" (1/1) ... [2021-11-23 17:10:35,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:35" (1/1) ... [2021-11-23 17:10:35,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:35" (1/1) ... [2021-11-23 17:10:35,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:35" (1/1) ... [2021-11-23 17:10:35,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:35" (1/1) ... [2021-11-23 17:10:35,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:35" (1/1) ... [2021-11-23 17:10:35,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:10:35,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:10:35,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:10:35,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:10:35,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:35" (1/1) ... [2021-11-23 17:10:35,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:10:35,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:10:35,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:10:35,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:10:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:10:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:10:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:10:35,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:10:35,957 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:10:35,959 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:10:38,156 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:10:38,163 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:10:38,163 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 17:10:38,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:10:38 BoogieIcfgContainer [2021-11-23 17:10:38,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:10:38,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:10:38,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:10:38,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:10:38,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:10:35" (1/3) ... [2021-11-23 17:10:38,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114027d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:10:38, skipping insertion in model container [2021-11-23 17:10:38,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:35" (2/3) ... [2021-11-23 17:10:38,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114027d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:10:38, skipping insertion in model container [2021-11-23 17:10:38,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:10:38" (3/3) ... [2021-11-23 17:10:38,173 INFO L111 eAbstractionObserver]: Analyzing ICFG square_2.i [2021-11-23 17:10:38,179 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:10:38,179 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:10:38,234 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:10:38,241 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 17:10:38,242 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 17:10:38,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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) [2021-11-23 17:10:38,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 17:10:38,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:10:38,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 17:10:38,261 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:10:38,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:10:38,266 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-11-23 17:10:38,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:10:38,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659082419] [2021-11-23 17:10:38,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:10:38,278 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:10:38,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:10:38,280 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:10:38,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:10:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:10:38,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 17:10:38,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:10:38,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:10:38,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:10:38,914 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:10:38,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659082419] [2021-11-23 17:10:38,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659082419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:10:38,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:10:38,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:10:38,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242060056] [2021-11-23 17:10:38,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:10:38,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 17:10:38,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:10:38,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 17:10:38,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 17:10:38,957 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-11-23 17:10:38,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:10:38,967 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-23 17:10:38,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 17:10:38,970 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 [2021-11-23 17:10:38,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:10:38,977 INFO L225 Difference]: With dead ends: 19 [2021-11-23 17:10:38,977 INFO L226 Difference]: Without dead ends: 7 [2021-11-23 17:10:38,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 17:10:38,984 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 17:10:38,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 17:10:39,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-23 17:10:39,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-23 17:10:39,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 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) [2021-11-23 17:10:39,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-11-23 17:10:39,012 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-11-23 17:10:39,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:10:39,012 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-11-23 17:10:39,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-11-23 17:10:39,013 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-11-23 17:10:39,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 17:10:39,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:10:39,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 17:10:39,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:10:39,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:10:39,234 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:10:39,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:10:39,238 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-11-23 17:10:39,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:10:39,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391628978] [2021-11-23 17:10:39,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:10:39,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:10:39,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:10:39,245 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:10:39,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 17:10:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 17:10:57,381 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 17:14:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 17:14:33,831 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-23 17:14:33,831 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 17:14:33,833 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 17:14:33,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 17:14:34,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:14:34,039 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-23 17:14:34,043 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 17:14:34,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 05:14:34 BoogieIcfgContainer [2021-11-23 17:14:34,078 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 17:14:34,078 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 17:14:34,079 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 17:14:34,079 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 17:14:34,079 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:10:38" (3/4) ... [2021-11-23 17:14:34,081 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 17:14:34,109 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/witness.graphml [2021-11-23 17:14:34,110 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 17:14:34,113 INFO L158 Benchmark]: Toolchain (without parser) took 238730.50ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 36.7MB in the beginning and 40.2MB in the end (delta: -3.5MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2021-11-23 17:14:34,113 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 58.7MB. Free memory was 39.7MB in the beginning and 39.7MB in the end (delta: 34.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:14:34,114 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.22ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 36.5MB in the beginning and 54.3MB in the end (delta: -17.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 17:14:34,115 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.88ms. Allocated memory is still 71.3MB. Free memory was 54.3MB in the beginning and 52.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:14:34,115 INFO L158 Benchmark]: Boogie Preprocessor took 42.46ms. Allocated memory is still 71.3MB. Free memory was 52.7MB in the beginning and 51.7MB in the end (delta: 958.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:14:34,115 INFO L158 Benchmark]: RCFGBuilder took 2380.01ms. Allocated memory is still 71.3MB. Free memory was 51.6MB in the beginning and 43.3MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:14:34,116 INFO L158 Benchmark]: TraceAbstraction took 235910.77ms. Allocated memory is still 71.3MB. Free memory was 42.7MB in the beginning and 41.9MB in the end (delta: 771.6kB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. [2021-11-23 17:14:34,116 INFO L158 Benchmark]: Witness Printer took 31.29ms. Allocated memory is still 71.3MB. Free memory was 41.9MB in the beginning and 40.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:14:34,119 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 58.7MB. Free memory was 39.7MB in the beginning and 39.7MB in the end (delta: 34.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 316.22ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 36.5MB in the beginning and 54.3MB in the end (delta: -17.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.88ms. Allocated memory is still 71.3MB. Free memory was 54.3MB in the beginning and 52.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 42.46ms. Allocated memory is still 71.3MB. Free memory was 52.7MB in the beginning and 51.7MB in the end (delta: 958.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2380.01ms. Allocated memory is still 71.3MB. Free memory was 51.6MB in the beginning and 43.3MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 235910.77ms. Allocated memory is still 71.3MB. Free memory was 42.7MB in the beginning and 41.9MB in the end (delta: 771.6kB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. * Witness Printer took 31.29ms. Allocated memory is still 71.3MB. Free memory was 41.9MB in the beginning and 40.2MB in the end (delta: 1.7MB). 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 - CounterExampleResult [Line: 38]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L29] float IN = __VERIFIER_nondet_float(); [L30] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L30] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L32] float x = IN; [L34-L35] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0.9999988675117493, result=1.3984370231628418, x=0.9999988675117493] [L37] COND TRUE !(result >= 0.0f && result < 1.398f) VAL [IN=0.9999988675117493, result=1.3984370231628418, x=0.9999988675117493] [L38] reach_error() VAL [IN=0.9999988675117493, result=1.3984370231628418, x=0.9999988675117493] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 235.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 10 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 18.6s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 20 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 proved your program to be incorrect! [2021-11-23 17:14:34,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e24b5a7-63f6-4507-b051-0b3a33bdd52f/bin/utaipan-fb15Y9Yzbl/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE