./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P --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 b8cf5878e44758bfdbe03c47ec0115857e08941dc4678f844d9c655b0bc177ba --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:15:42,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:15:42,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:15:42,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:15:42,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:15:42,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:15:42,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:15:42,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:15:42,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:15:42,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:15:42,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:15:42,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:15:42,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:15:42,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:15:42,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:15:43,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:15:43,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:15:43,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:15:43,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:15:43,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:15:43,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:15:43,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:15:43,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:15:43,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:15:43,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:15:43,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:15:43,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:15:43,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:15:43,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:15:43,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:15:43,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:15:43,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:15:43,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:15:43,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:15:43,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:15:43,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:15:43,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:15:43,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:15:43,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:15:43,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:15:43,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:15:43,055 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:15:43,098 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:15:43,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:15:43,099 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:15:43,099 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:15:43,100 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:15:43,100 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:15:43,100 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:15:43,106 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:15:43,106 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:15:43,106 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:15:43,107 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:15:43,107 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:15:43,107 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:15:43,107 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:15:43,108 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:15:43,108 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:15:43,108 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:15:43,108 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:15:43,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:15:43,110 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:15:43,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:15:43,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:15:43,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:15:43,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:15:43,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:15:43,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:15:43,112 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:15:43,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:15:43,113 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:15:43,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:15:43,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:15:43,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:15:43,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:15:43,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:15:43,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:15:43,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:15:43,115 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:15:43,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:15:43,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:15:43,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:15:43,115 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:15:43,115 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_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8cf5878e44758bfdbe03c47ec0115857e08941dc4678f844d9c655b0bc177ba [2021-11-20 23:15:43,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:15:43,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:15:43,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:15:43,410 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:15:43,413 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:15:43,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/floats-cbmc-regression/float12.c [2021-11-20 23:15:43,490 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/data/2de994fc2/f158ad3198764df3a022085b5fb6e193/FLAG1a6907aca [2021-11-20 23:15:43,925 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:15:43,925 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/sv-benchmarks/c/floats-cbmc-regression/float12.c [2021-11-20 23:15:43,935 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/data/2de994fc2/f158ad3198764df3a022085b5fb6e193/FLAG1a6907aca [2021-11-20 23:15:44,309 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/data/2de994fc2/f158ad3198764df3a022085b5fb6e193 [2021-11-20 23:15:44,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:15:44,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:15:44,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:15:44,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:15:44,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:15:44,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:15:44" (1/1) ... [2021-11-20 23:15:44,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5eaa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:44, skipping insertion in model container [2021-11-20 23:15:44,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:15:44" (1/1) ... [2021-11-20 23:15:44,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:15:44,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:15:44,542 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_7c055702-289f-4e61-848c-d18211281903/sv-benchmarks/c/floats-cbmc-regression/float12.c[500,513] [2021-11-20 23:15:44,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:15:44,557 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:15:44,571 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_7c055702-289f-4e61-848c-d18211281903/sv-benchmarks/c/floats-cbmc-regression/float12.c[500,513] [2021-11-20 23:15:44,572 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:15:44,587 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:15:44,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:44 WrapperNode [2021-11-20 23:15:44,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:15:44,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:15:44,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:15:44,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:15:44,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:44" (1/1) ... [2021-11-20 23:15:44,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:44" (1/1) ... [2021-11-20 23:15:44,621 INFO L137 Inliner]: procedures = 13, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2021-11-20 23:15:44,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:15:44,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:15:44,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:15:44,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:15:44,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:44" (1/1) ... [2021-11-20 23:15:44,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:44" (1/1) ... [2021-11-20 23:15:44,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:44" (1/1) ... [2021-11-20 23:15:44,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:44" (1/1) ... [2021-11-20 23:15:44,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:44" (1/1) ... [2021-11-20 23:15:44,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:44" (1/1) ... [2021-11-20 23:15:44,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:44" (1/1) ... [2021-11-20 23:15:44,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:15:44,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:15:44,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:15:44,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:15:44,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:44" (1/1) ... [2021-11-20 23:15:44,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:15:44,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:15:44,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:15:44,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:15:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:15:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:15:44,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:15:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:15:44,808 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:15:44,810 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:15:44,903 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:15:44,917 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:15:44,917 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:15:44,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:15:44 BoogieIcfgContainer [2021-11-20 23:15:44,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:15:44,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:15:44,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:15:44,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:15:44,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:15:44" (1/3) ... [2021-11-20 23:15:44,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e217d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:15:44, skipping insertion in model container [2021-11-20 23:15:44,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:44" (2/3) ... [2021-11-20 23:15:44,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e217d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:15:44, skipping insertion in model container [2021-11-20 23:15:44,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:15:44" (3/3) ... [2021-11-20 23:15:44,934 INFO L111 eAbstractionObserver]: Analyzing ICFG float12.c [2021-11-20 23:15:44,942 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:15:44,942 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:15:45,003 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:15:45,016 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 [2021-11-20 23:15:45,016 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:15:45,030 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 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) [2021-11-20 23:15:45,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-20 23:15:45,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:45,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-20 23:15:45,058 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:15:45,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:45,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1494612, now seen corresponding path program 1 times [2021-11-20 23:15:45,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:45,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880439737] [2021-11-20 23:15:45,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:45,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:15:45,164 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 23:15:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:15:45,207 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-20 23:15:45,210 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 23:15:45,211 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 23:15:45,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:15:45,219 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-20 23:15:45,222 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:15:45,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:15:45 BoogieIcfgContainer [2021-11-20 23:15:45,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:15:45,248 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:15:45,248 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:15:45,249 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:15:45,249 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:15:44" (3/4) ... [2021-11-20 23:15:45,252 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 23:15:45,252 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:15:45,254 INFO L158 Benchmark]: Toolchain (without parser) took 940.65ms. Allocated memory is still 113.2MB. Free memory was 74.7MB in the beginning and 66.1MB in the end (delta: 8.7MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2021-11-20 23:15:45,255 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 113.2MB. Free memory is still 90.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:15:45,256 INFO L158 Benchmark]: CACSL2BoogieTranslator took 274.00ms. Allocated memory is still 113.2MB. Free memory was 74.5MB in the beginning and 89.6MB in the end (delta: -15.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 23:15:45,257 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.36ms. Allocated memory is still 113.2MB. Free memory was 89.6MB in the beginning and 88.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:15:45,258 INFO L158 Benchmark]: Boogie Preprocessor took 28.68ms. Allocated memory is still 113.2MB. Free memory was 88.3MB in the beginning and 87.4MB in the end (delta: 920.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:15:45,263 INFO L158 Benchmark]: RCFGBuilder took 267.62ms. Allocated memory is still 113.2MB. Free memory was 87.4MB in the beginning and 79.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 23:15:45,264 INFO L158 Benchmark]: TraceAbstraction took 321.17ms. Allocated memory is still 113.2MB. Free memory was 78.4MB in the beginning and 66.7MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 23:15:45,266 INFO L158 Benchmark]: Witness Printer took 4.44ms. Allocated memory is still 113.2MB. Free memory was 66.4MB in the beginning and 66.1MB in the end (delta: 305.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:15:45,273 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 113.2MB. Free memory is still 90.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 274.00ms. Allocated memory is still 113.2MB. Free memory was 74.5MB in the beginning and 89.6MB in the end (delta: -15.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.36ms. Allocated memory is still 113.2MB. Free memory was 89.6MB in the beginning and 88.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.68ms. Allocated memory is still 113.2MB. Free memory was 88.3MB in the beginning and 87.4MB in the end (delta: 920.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 267.62ms. Allocated memory is still 113.2MB. Free memory was 87.4MB in the beginning and 79.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 321.17ms. Allocated memory is still 113.2MB. Free memory was 78.4MB in the beginning and 66.7MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.44ms. Allocated memory is still 113.2MB. Free memory was 66.4MB in the beginning and 66.1MB in the end (delta: 305.4kB). 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: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L8] float f = __VERIFIER_nondet_float(); [L9] double d; [L10] unsigned char x = __VERIFIER_nondet_uchar(); [L12] d=f VAL [d=49, f=49] [L14] COND TRUE f==x VAL [d=49, f=49] [L15] COND TRUE !(d==x) VAL [d=49, f=49] [L15] reach_error() VAL [d=49, f=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 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, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred 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 [2021-11-20 23:15:45,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/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_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P --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 b8cf5878e44758bfdbe03c47ec0115857e08941dc4678f844d9c655b0bc177ba --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:15:47,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:15:47,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:15:47,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:15:47,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:15:47,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:15:47,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:15:47,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:15:47,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:15:47,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:15:47,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:15:47,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:15:47,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:15:47,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:15:47,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:15:47,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:15:47,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:15:47,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:15:47,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:15:47,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:15:47,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:15:47,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:15:47,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:15:47,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:15:47,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:15:47,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:15:47,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:15:47,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:15:47,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:15:47,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:15:47,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:15:47,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:15:47,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:15:47,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:15:47,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:15:47,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:15:47,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:15:47,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:15:47,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:15:47,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:15:47,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:15:47,980 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-20 23:15:48,014 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:15:48,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:15:48,017 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:15:48,018 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:15:48,018 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:15:48,019 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:15:48,019 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:15:48,019 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:15:48,019 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:15:48,020 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:15:48,021 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:15:48,021 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:15:48,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:15:48,023 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:15:48,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:15:48,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:15:48,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:15:48,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:15:48,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:15:48,024 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 23:15:48,024 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 23:15:48,024 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:15:48,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:15:48,025 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:15:48,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:15:48,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:15:48,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 23:15:48,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:15:48,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:15:48,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:15:48,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:15:48,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:15:48,027 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-20 23:15:48,028 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 23:15:48,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:15:48,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:15:48,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:15:48,029 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_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8cf5878e44758bfdbe03c47ec0115857e08941dc4678f844d9c655b0bc177ba [2021-11-20 23:15:48,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:15:48,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:15:48,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:15:48,467 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:15:48,468 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:15:48,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/floats-cbmc-regression/float12.c [2021-11-20 23:15:48,563 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/data/4e991059c/d0782bc626d0424087805dc016be8bae/FLAG4a80fb74a [2021-11-20 23:15:49,130 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:15:49,132 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/sv-benchmarks/c/floats-cbmc-regression/float12.c [2021-11-20 23:15:49,138 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/data/4e991059c/d0782bc626d0424087805dc016be8bae/FLAG4a80fb74a [2021-11-20 23:15:49,495 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/data/4e991059c/d0782bc626d0424087805dc016be8bae [2021-11-20 23:15:49,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:15:49,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:15:49,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:15:49,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:15:49,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:15:49,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:15:49" (1/1) ... [2021-11-20 23:15:49,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e79cd88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:49, skipping insertion in model container [2021-11-20 23:15:49,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:15:49" (1/1) ... [2021-11-20 23:15:49,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:15:49,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:15:49,696 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_7c055702-289f-4e61-848c-d18211281903/sv-benchmarks/c/floats-cbmc-regression/float12.c[500,513] [2021-11-20 23:15:49,700 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:15:49,713 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:15:49,731 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_7c055702-289f-4e61-848c-d18211281903/sv-benchmarks/c/floats-cbmc-regression/float12.c[500,513] [2021-11-20 23:15:49,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:15:49,752 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:15:49,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:49 WrapperNode [2021-11-20 23:15:49,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:15:49,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:15:49,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:15:49,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:15:49,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:49" (1/1) ... [2021-11-20 23:15:49,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:49" (1/1) ... [2021-11-20 23:15:49,831 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2021-11-20 23:15:49,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:15:49,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:15:49,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:15:49,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:15:49,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:49" (1/1) ... [2021-11-20 23:15:49,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:49" (1/1) ... [2021-11-20 23:15:49,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:49" (1/1) ... [2021-11-20 23:15:49,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:49" (1/1) ... [2021-11-20 23:15:49,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:49" (1/1) ... [2021-11-20 23:15:49,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:49" (1/1) ... [2021-11-20 23:15:49,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:49" (1/1) ... [2021-11-20 23:15:49,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:15:49,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:15:49,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:15:49,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:15:49,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:49" (1/1) ... [2021-11-20 23:15:49,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:15:49,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:15:49,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:15:49,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:15:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:15:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 23:15:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:15:49,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:15:50,056 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:15:50,058 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:15:50,295 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:15:50,301 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:15:50,301 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:15:50,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:15:50 BoogieIcfgContainer [2021-11-20 23:15:50,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:15:50,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:15:50,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:15:50,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:15:50,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:15:49" (1/3) ... [2021-11-20 23:15:50,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c44586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:15:50, skipping insertion in model container [2021-11-20 23:15:50,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:49" (2/3) ... [2021-11-20 23:15:50,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c44586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:15:50, skipping insertion in model container [2021-11-20 23:15:50,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:15:50" (3/3) ... [2021-11-20 23:15:50,311 INFO L111 eAbstractionObserver]: Analyzing ICFG float12.c [2021-11-20 23:15:50,330 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:15:50,330 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:15:50,414 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:15:50,421 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 [2021-11-20 23:15:50,422 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:15:50,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:50,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 23:15:50,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:50,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 23:15:50,441 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:15:50,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:50,451 INFO L85 PathProgramCache]: Analyzing trace with hash 28693795, now seen corresponding path program 1 times [2021-11-20 23:15:50,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:15:50,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680156046] [2021-11-20 23:15:50,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:50,464 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:15:50,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:15:50,467 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:15:50,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 23:15:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:50,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:15:50,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:15:52,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:52,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:15:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:54,766 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:15:54,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680156046] [2021-11-20 23:15:54,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680156046] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:54,767 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:54,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 23:15:54,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115602773] [2021-11-20 23:15:54,770 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:54,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:15:54,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:15:54,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:15:54,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:15:54,802 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 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) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2021-11-20 23:15:59,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:59,495 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2021-11-20 23:15:59,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:15:59,504 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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 5 [2021-11-20 23:15:59,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:59,510 INFO L225 Difference]: With dead ends: 15 [2021-11-20 23:15:59,511 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 23:15:59,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:15:59,518 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:59,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 8 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 2 Unchecked, 0.3s Time] [2021-11-20 23:15:59,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 23:15:59,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 23:15:59,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:59,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 23:15:59,544 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-11-20 23:15:59,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:59,545 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 23:15:59,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2021-11-20 23:15:59,545 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 23:15:59,546 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 23:15:59,548 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 23:15:59,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:15:59,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:15:59,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 23:15:59,765 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 23:15:59,775 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-20 23:15:59,776 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 23:15:59,776 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-20 23:15:59,776 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2021-11-20 23:15:59,776 INFO L858 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2021-11-20 23:15:59,777 INFO L858 garLoopResultBuilder]: For program point L14(lines 14 15) no Hoare annotation was computed. [2021-11-20 23:15:59,777 INFO L858 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-11-20 23:15:59,777 INFO L858 garLoopResultBuilder]: For program point L6(lines 6 16) no Hoare annotation was computed. [2021-11-20 23:15:59,789 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-20 23:15:59,794 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:15:59,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:15:59 BoogieIcfgContainer [2021-11-20 23:15:59,804 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:15:59,806 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:15:59,808 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:15:59,809 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:15:59,809 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:15:50" (3/4) ... [2021-11-20 23:15:59,812 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 23:15:59,826 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-20 23:15:59,826 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-20 23:15:59,827 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 23:15:59,827 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 23:15:59,862 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-20 23:15:59,862 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:15:59,863 INFO L158 Benchmark]: Toolchain (without parser) took 10359.64ms. Allocated memory is still 88.1MB. Free memory was 54.0MB in the beginning and 68.4MB in the end (delta: -14.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:15:59,864 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 88.1MB. Free memory was 70.4MB in the beginning and 70.3MB in the end (delta: 75.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:15:59,865 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.92ms. Allocated memory is still 88.1MB. Free memory was 53.8MB in the beginning and 68.9MB in the end (delta: -15.1MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2021-11-20 23:15:59,867 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.92ms. Allocated memory is still 88.1MB. Free memory was 68.9MB in the beginning and 72.7MB in the end (delta: -3.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:15:59,868 INFO L158 Benchmark]: Boogie Preprocessor took 50.93ms. Allocated memory is still 88.1MB. Free memory was 72.7MB in the beginning and 71.7MB in the end (delta: 965.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:15:59,868 INFO L158 Benchmark]: RCFGBuilder took 419.08ms. Allocated memory is still 88.1MB. Free memory was 71.7MB in the beginning and 63.7MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-20 23:15:59,870 INFO L158 Benchmark]: TraceAbstraction took 9500.17ms. Allocated memory is still 88.1MB. Free memory was 63.3MB in the beginning and 70.5MB in the end (delta: -7.3MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2021-11-20 23:15:59,871 INFO L158 Benchmark]: Witness Printer took 56.76ms. Allocated memory is still 88.1MB. Free memory was 70.5MB in the beginning and 68.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:15:59,873 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 88.1MB. Free memory was 70.4MB in the beginning and 70.3MB in the end (delta: 75.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 247.92ms. Allocated memory is still 88.1MB. Free memory was 53.8MB in the beginning and 68.9MB in the end (delta: -15.1MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.92ms. Allocated memory is still 88.1MB. Free memory was 68.9MB in the beginning and 72.7MB in the end (delta: -3.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.93ms. Allocated memory is still 88.1MB. Free memory was 72.7MB in the beginning and 71.7MB in the end (delta: 965.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 419.08ms. Allocated memory is still 88.1MB. Free memory was 71.7MB in the beginning and 63.7MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 9500.17ms. Allocated memory is still 88.1MB. Free memory was 63.3MB in the beginning and 70.5MB in the end (delta: -7.3MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. * Witness Printer took 56.76ms. Allocated memory is still 88.1MB. Free memory was 70.5MB in the beginning and 68.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 15]: 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, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 4 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 4, 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: 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, 4.2s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 2 QuantifiedInterpolants, 39 SizeOfPredicates, 6 NumberOfNonLiveVariables, 19 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-20 23:15:59,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c055702-289f-4e61-848c-d18211281903/bin/utaipan-TEXQjIfE4P/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