./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_1+newton_1_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_1_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF --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 3fd336a0cf083f3890b8c868f630a501a442e53f25a6db757ae043988dd949bf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:37:00,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:37:00,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:37:00,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:37:00,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:37:00,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:37:00,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:37:00,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:37:00,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:37:00,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:37:00,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:37:00,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:37:00,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:37:00,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:37:00,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:37:00,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:37:00,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:37:00,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:37:00,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:37:00,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:37:00,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:37:00,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:37:00,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:37:00,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:37:00,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:37:00,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:37:00,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:37:00,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:37:00,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:37:00,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:37:00,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:37:00,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:37:00,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:37:00,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:37:00,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:37:00,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:37:00,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:37:00,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:37:00,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:37:00,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:37:00,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:37:00,487 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 02:37:00,545 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:37:00,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:37:00,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:37:00,547 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:37:00,548 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:37:00,548 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:37:00,556 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:37:00,557 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:37:00,557 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:37:00,557 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:37:00,559 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:37:00,559 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:37:00,559 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:37:00,560 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:37:00,560 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:37:00,560 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:37:00,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:37:00,562 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:37:00,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:37:00,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:37:00,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:37:00,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:37:00,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:37:00,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:37:00,564 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:37:00,565 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:37:00,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:37:00,565 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:37:00,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:37:00,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:37:00,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:37:00,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:37:00,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:37:00,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:37:00,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:37:00,570 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:37:00,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:37:00,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:37:00,571 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:37:00,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:37:00,571 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_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fd336a0cf083f3890b8c868f630a501a442e53f25a6db757ae043988dd949bf [2021-11-13 02:37:01,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:37:01,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:37:01,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:37:01,079 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:37:01,080 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:37:01,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/combinations/gcd_1+newton_1_5.i [2021-11-13 02:37:01,183 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/data/86558752b/d56ac87e59ac445c89bf45147887299a/FLAGe91e9b047 [2021-11-13 02:37:01,841 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:37:01,843 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i [2021-11-13 02:37:01,856 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/data/86558752b/d56ac87e59ac445c89bf45147887299a/FLAGe91e9b047 [2021-11-13 02:37:02,178 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/data/86558752b/d56ac87e59ac445c89bf45147887299a [2021-11-13 02:37:02,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:37:02,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:37:02,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:37:02,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:37:02,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:37:02,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:37:02" (1/1) ... [2021-11-13 02:37:02,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78c6eb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:02, skipping insertion in model container [2021-11-13 02:37:02,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:37:02" (1/1) ... [2021-11-13 02:37:02,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:37:02,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:37:02,467 WARN L228 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_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i[1226,1239] [2021-11-13 02:37:02,535 WARN L228 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_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i[2786,2799] [2021-11-13 02:37:02,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:37:02,560 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:37:02,578 WARN L228 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_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i[1226,1239] [2021-11-13 02:37:02,593 WARN L228 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_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i[2786,2799] [2021-11-13 02:37:02,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:37:02,612 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:37:02,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:02 WrapperNode [2021-11-13 02:37:02,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:37:02,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:37:02,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:37:02,615 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:37:02,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:02" (1/1) ... [2021-11-13 02:37:02,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:02" (1/1) ... [2021-11-13 02:37:02,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:37:02,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:37:02,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:37:02,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:37:02,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:02" (1/1) ... [2021-11-13 02:37:02,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:02" (1/1) ... [2021-11-13 02:37:02,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:02" (1/1) ... [2021-11-13 02:37:02,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:02" (1/1) ... [2021-11-13 02:37:02,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:02" (1/1) ... [2021-11-13 02:37:02,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:02" (1/1) ... [2021-11-13 02:37:02,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:02" (1/1) ... [2021-11-13 02:37:02,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:37:02,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:37:02,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:37:02,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:37:02,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:02" (1/1) ... [2021-11-13 02:37:02,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:37:02,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:37:02,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:37:02,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:37:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:37:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 02:37:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:37:02,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:37:03,343 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:37:03,350 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 02:37:03,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:37:03 BoogieIcfgContainer [2021-11-13 02:37:03,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:37:03,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:37:03,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:37:03,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:37:03,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:37:02" (1/3) ... [2021-11-13 02:37:03,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fabe022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:37:03, skipping insertion in model container [2021-11-13 02:37:03,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:02" (2/3) ... [2021-11-13 02:37:03,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fabe022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:37:03, skipping insertion in model container [2021-11-13 02:37:03,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:37:03" (3/3) ... [2021-11-13 02:37:03,383 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_5.i [2021-11-13 02:37:03,393 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:37:03,393 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 02:37:03,464 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:37:03,475 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 [2021-11-13 02:37:03,476 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-13 02:37:03,499 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 14 states have internal predecessors, (19), 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) [2021-11-13 02:37:03,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-13 02:37:03,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:03,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-13 02:37:03,523 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:37:03,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:03,538 INFO L85 PathProgramCache]: Analyzing trace with hash 3484809, now seen corresponding path program 1 times [2021-11-13 02:37:03,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:03,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854745312] [2021-11-13 02:37:03,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:03,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:37:03,758 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 02:37:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:37:03,864 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-13 02:37:03,866 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 02:37:03,868 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-13 02:37:03,871 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-13 02:37:03,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 02:37:03,879 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-13 02:37:03,883 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 02:37:03,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:37:03 BoogieIcfgContainer [2021-11-13 02:37:03,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 02:37:03,925 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 02:37:03,925 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 02:37:03,926 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 02:37:03,927 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:37:03" (3/4) ... [2021-11-13 02:37:03,931 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-13 02:37:03,931 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 02:37:03,935 INFO L158 Benchmark]: Toolchain (without parser) took 1748.37ms. Allocated memory was 88.1MB in the beginning and 113.2MB in the end (delta: 25.2MB). Free memory was 53.2MB in the beginning and 57.2MB in the end (delta: -4.1MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2021-11-13 02:37:03,936 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 88.1MB. Free memory was 60.0MB in the beginning and 59.9MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:37:03,938 INFO L158 Benchmark]: CACSL2BoogieTranslator took 425.89ms. Allocated memory was 88.1MB in the beginning and 113.2MB in the end (delta: 25.2MB). Free memory was 53.1MB in the beginning and 87.7MB in the end (delta: -34.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 02:37:03,940 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.85ms. Allocated memory is still 113.2MB. Free memory was 87.7MB in the beginning and 86.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 02:37:03,947 INFO L158 Benchmark]: Boogie Preprocessor took 61.74ms. Allocated memory is still 113.2MB. Free memory was 86.1MB in the beginning and 84.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:37:03,950 INFO L158 Benchmark]: RCFGBuilder took 619.61ms. Allocated memory is still 113.2MB. Free memory was 84.7MB in the beginning and 71.4MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-13 02:37:03,951 INFO L158 Benchmark]: TraceAbstraction took 559.56ms. Allocated memory is still 113.2MB. Free memory was 71.0MB in the beginning and 57.4MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 02:37:03,952 INFO L158 Benchmark]: Witness Printer took 6.38ms. Allocated memory is still 113.2MB. Free memory was 57.4MB in the beginning and 57.2MB in the end (delta: 164.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:37:03,964 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 88.1MB. Free memory was 60.0MB in the beginning and 59.9MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 425.89ms. Allocated memory was 88.1MB in the beginning and 113.2MB in the end (delta: 25.2MB). Free memory was 53.1MB in the beginning and 87.7MB in the end (delta: -34.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.85ms. Allocated memory is still 113.2MB. Free memory was 87.7MB in the beginning and 86.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.74ms. Allocated memory is still 113.2MB. Free memory was 86.1MB in the beginning and 84.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 619.61ms. Allocated memory is still 113.2MB. Free memory was 84.7MB in the beginning and 71.4MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 559.56ms. Allocated memory is still 113.2MB. Free memory was 71.0MB in the beginning and 57.4MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 6.38ms. Allocated memory is still 113.2MB. Free memory was 57.4MB in the beginning and 57.2MB in the end (delta: 164.4kB). 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: 102]: 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 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 80. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -1.0f && IN < 1.0f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -1.0f && IN < 1.0f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=49] [L102] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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=15occurred 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, 0.1s 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 [2021-11-13 02:37:04,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/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_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_1_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF --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 3fd336a0cf083f3890b8c868f630a501a442e53f25a6db757ae043988dd949bf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:37:06,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:37:06,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:37:07,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:37:07,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:37:07,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:37:07,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:37:07,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:37:07,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:37:07,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:37:07,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:37:07,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:37:07,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:37:07,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:37:07,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:37:07,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:37:07,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:37:07,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:37:07,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:37:07,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:37:07,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:37:07,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:37:07,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:37:07,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:37:07,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:37:07,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:37:07,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:37:07,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:37:07,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:37:07,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:37:07,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:37:07,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:37:07,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:37:07,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:37:07,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:37:07,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:37:07,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:37:07,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:37:07,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:37:07,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:37:07,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:37:07,129 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-13 02:37:07,178 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:37:07,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:37:07,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:37:07,180 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:37:07,180 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:37:07,180 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:37:07,181 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:37:07,181 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:37:07,181 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:37:07,182 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:37:07,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:37:07,185 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:37:07,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:37:07,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:37:07,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:37:07,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:37:07,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:37:07,186 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:37:07,187 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:37:07,187 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:37:07,187 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:37:07,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:37:07,188 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:37:07,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:37:07,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:37:07,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:37:07,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:37:07,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:37:07,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:37:07,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:37:07,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:37:07,191 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:37:07,191 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:37:07,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:37:07,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:37:07,192 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:37:07,192 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_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fd336a0cf083f3890b8c868f630a501a442e53f25a6db757ae043988dd949bf [2021-11-13 02:37:07,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:37:07,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:37:07,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:37:07,662 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:37:07,665 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:37:07,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/combinations/gcd_1+newton_1_5.i [2021-11-13 02:37:07,754 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/data/725ec357e/31d27a6223b34c169fa10f0efa231756/FLAG44e196292 [2021-11-13 02:37:08,451 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:37:08,456 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i [2021-11-13 02:37:08,469 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/data/725ec357e/31d27a6223b34c169fa10f0efa231756/FLAG44e196292 [2021-11-13 02:37:08,802 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/data/725ec357e/31d27a6223b34c169fa10f0efa231756 [2021-11-13 02:37:08,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:37:08,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:37:08,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:37:08,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:37:08,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:37:08,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:37:08" (1/1) ... [2021-11-13 02:37:08,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3420cb2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:08, skipping insertion in model container [2021-11-13 02:37:08,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:37:08" (1/1) ... [2021-11-13 02:37:08,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:37:08,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:37:09,032 WARN L228 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_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i[1226,1239] [2021-11-13 02:37:09,063 WARN L228 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_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i[2786,2799] [2021-11-13 02:37:09,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:37:09,080 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:37:09,117 WARN L228 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_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i[1226,1239] [2021-11-13 02:37:09,157 WARN L228 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_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i[2786,2799] [2021-11-13 02:37:09,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:37:09,198 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:37:09,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:09 WrapperNode [2021-11-13 02:37:09,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:37:09,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:37:09,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:37:09,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:37:09,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:09" (1/1) ... [2021-11-13 02:37:09,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:09" (1/1) ... [2021-11-13 02:37:09,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:37:09,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:37:09,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:37:09,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:37:09,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:09" (1/1) ... [2021-11-13 02:37:09,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:09" (1/1) ... [2021-11-13 02:37:09,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:09" (1/1) ... [2021-11-13 02:37:09,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:09" (1/1) ... [2021-11-13 02:37:09,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:09" (1/1) ... [2021-11-13 02:37:09,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:09" (1/1) ... [2021-11-13 02:37:09,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:09" (1/1) ... [2021-11-13 02:37:09,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:37:09,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:37:09,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:37:09,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:37:09,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:09" (1/1) ... [2021-11-13 02:37:09,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:37:09,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:37:09,347 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:37:09,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:37:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:37:09,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:37:09,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:37:09,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:37:16,708 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:37:16,708 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 02:37:16,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:37:16 BoogieIcfgContainer [2021-11-13 02:37:16,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:37:16,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:37:16,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:37:16,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:37:16,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:37:08" (1/3) ... [2021-11-13 02:37:16,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642fdf43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:37:16, skipping insertion in model container [2021-11-13 02:37:16,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:09" (2/3) ... [2021-11-13 02:37:16,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642fdf43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:37:16, skipping insertion in model container [2021-11-13 02:37:16,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:37:16" (3/3) ... [2021-11-13 02:37:16,734 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_5.i [2021-11-13 02:37:16,741 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:37:16,742 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 02:37:16,802 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:37:16,811 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 [2021-11-13 02:37:16,812 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-13 02:37:16,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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) [2021-11-13 02:37:16,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 02:37:16,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:16,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:16,839 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:37:16,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:16,846 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-11-13 02:37:16,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:37:16,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306222483] [2021-11-13 02:37:16,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:16,863 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:37:16,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:37:16,866 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:37:16,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:37:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:18,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 02:37:18,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:37:18,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:18,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:37:18,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:18,553 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:37:18,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306222483] [2021-11-13 02:37:18,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306222483] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:18,555 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:18,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 02:37:18,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874549763] [2021-11-13 02:37:18,558 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:18,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 02:37:18,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:37:18,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 02:37:18,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 02:37:18,622 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-13 02:37:18,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:18,670 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-11-13 02:37:18,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 02:37:18,679 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-13 02:37:18,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:18,688 INFO L225 Difference]: With dead ends: 46 [2021-11-13 02:37:18,689 INFO L226 Difference]: Without dead ends: 19 [2021-11-13 02:37:18,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 02:37:18,710 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.81ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:18,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.81ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 02:37:18,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-13 02:37:18,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-13 02:37:18,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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) [2021-11-13 02:37:18,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-13 02:37:18,762 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-11-13 02:37:18,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:18,762 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-13 02:37:18,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-13 02:37:18,763 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-13 02:37:18,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 02:37:18,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:18,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:18,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:37:18,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:37:18,979 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:37:18,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:18,980 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-11-13 02:37:18,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:37:18,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743656068] [2021-11-13 02:37:18,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:18,983 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:37:18,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:37:18,984 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:37:18,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 02:37:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:37:38,393 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 02:37:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:37:57,230 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-13 02:37:57,230 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 02:37:57,232 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-13 02:37:57,235 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-13 02:37:57,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:37:57,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:37:57,445 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-13 02:37:57,450 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 02:37:57,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:37:57 BoogieIcfgContainer [2021-11-13 02:37:57,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 02:37:57,496 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 02:37:57,496 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 02:37:57,498 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 02:37:57,499 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:37:16" (3/4) ... [2021-11-13 02:37:57,501 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-13 02:37:57,577 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-13 02:37:57,583 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 02:37:57,584 INFO L158 Benchmark]: Toolchain (without parser) took 48776.23ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 32.3MB in the beginning and 39.0MB in the end (delta: -6.7MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2021-11-13 02:37:57,585 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 54.5MB. Free memory was 35.4MB in the beginning and 35.4MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:37:57,586 INFO L158 Benchmark]: CACSL2BoogieTranslator took 376.69ms. Allocated memory is still 54.5MB. Free memory was 32.2MB in the beginning and 36.4MB in the end (delta: -4.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-13 02:37:57,588 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.76ms. Allocated memory is still 54.5MB. Free memory was 36.4MB in the beginning and 34.5MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:37:57,589 INFO L158 Benchmark]: Boogie Preprocessor took 41.21ms. Allocated memory is still 54.5MB. Free memory was 34.5MB in the beginning and 33.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 02:37:57,594 INFO L158 Benchmark]: RCFGBuilder took 7415.66ms. Allocated memory is still 54.5MB. Free memory was 33.1MB in the beginning and 22.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 02:37:57,595 INFO L158 Benchmark]: TraceAbstraction took 40769.17ms. Allocated memory is still 67.1MB. Free memory was 49.4MB in the beginning and 41.2MB in the end (delta: 8.1MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2021-11-13 02:37:57,596 INFO L158 Benchmark]: Witness Printer took 87.05ms. Allocated memory is still 67.1MB. Free memory was 41.2MB in the beginning and 39.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 02:37:57,602 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 54.5MB. Free memory was 35.4MB in the beginning and 35.4MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 376.69ms. Allocated memory is still 54.5MB. Free memory was 32.2MB in the beginning and 36.4MB in the end (delta: -4.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.76ms. Allocated memory is still 54.5MB. Free memory was 36.4MB in the beginning and 34.5MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.21ms. Allocated memory is still 54.5MB. Free memory was 34.5MB in the beginning and 33.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 7415.66ms. Allocated memory is still 54.5MB. Free memory was 33.1MB in the beginning and 22.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 40769.17ms. Allocated memory is still 67.1MB. Free memory was 49.4MB in the beginning and 41.2MB in the end (delta: 8.1MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Witness Printer took 87.05ms. Allocated memory is still 67.1MB. Free memory was 41.2MB in the beginning and 39.0MB in the end (delta: 2.2MB). 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: 102]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -1.0f && IN < 1.0f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -1.0f && IN < 1.0f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=-0.9423828125, \result=-0.8092214465141296, x=-0.9423828125] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-0.9423828125, \result=0.5897924304008484, x=-0.9423828125] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=-0.9423828125, x=0.4296616315841675] [L102] reach_error() VAL [IN=-0.9423828125, x=0.4296616315841675] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 40.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.00ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.00ms 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, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.81ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 20.7s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 37 ConjunctsInSsa, 1 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 RESULT: Ultimate proved your program to be incorrect! [2021-11-13 02:37:57,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc84d8c7-14ac-4546-85cd-2e5deff8ebd2/bin/utaipan-vmNK8stdcF/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