./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_1+newton_1_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_1_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7 --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 7f72f5580e8ee240383987c5e02610bf09387ce8fa780da3ef6f20ea144f2408 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:51:45,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:51:45,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:51:45,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:51:45,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:51:45,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:51:45,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:51:45,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:51:45,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:51:45,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:51:45,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:51:45,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:51:45,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:51:45,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:51:45,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:51:45,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:51:45,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:51:45,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:51:45,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:51:45,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:51:45,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:51:45,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:51:45,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:51:45,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:51:45,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:51:45,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:51:45,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:51:45,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:51:45,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:51:45,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:51:45,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:51:45,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:51:45,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:51:45,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:51:45,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:51:45,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:51:45,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:51:45,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:51:45,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:51:45,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:51:45,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:51:45,742 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 17:51:45,789 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:51:45,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:51:45,790 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:51:45,790 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:51:45,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:51:45,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:51:45,798 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:51:45,798 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:51:45,799 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:51:45,799 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:51:45,800 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:51:45,800 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:51:45,800 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:51:45,801 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:51:45,801 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:51:45,801 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:51:45,801 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:51:45,802 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:51:45,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:51:45,803 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 17:51:45,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:51:45,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 17:51:45,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:51:45,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:51:45,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:51:45,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:51:45,804 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 17:51:45,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:51:45,805 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:51:45,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:51:45,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:51:45,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:51:45,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:51:45,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:51:45,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:51:45,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:51:45,807 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:51:45,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:51:45,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:51:45,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:51:45,807 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:51:45,808 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_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f72f5580e8ee240383987c5e02610bf09387ce8fa780da3ef6f20ea144f2408 [2021-11-25 17:51:46,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:51:46,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:51:46,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:51:46,121 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:51:46,122 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:51:46,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/gcd_1+newton_1_7.i [2021-11-25 17:51:46,189 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/data/536ee6d70/c1217e286bbd40cea88fa52848e05029/FLAGa4c4aded8 [2021-11-25 17:51:46,632 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:51:46,633 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/sv-benchmarks/c/combinations/gcd_1+newton_1_7.i [2021-11-25 17:51:46,644 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/data/536ee6d70/c1217e286bbd40cea88fa52848e05029/FLAGa4c4aded8 [2021-11-25 17:51:47,014 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/data/536ee6d70/c1217e286bbd40cea88fa52848e05029 [2021-11-25 17:51:47,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:51:47,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:51:47,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:51:47,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:51:47,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:51:47,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:51:47" (1/1) ... [2021-11-25 17:51:47,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ffe9791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:47, skipping insertion in model container [2021-11-25 17:51:47,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:51:47" (1/1) ... [2021-11-25 17:51:47,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:51:47,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:51:47,218 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_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/sv-benchmarks/c/combinations/gcd_1+newton_1_7.i[1226,1239] [2021-11-25 17:51:47,254 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_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/sv-benchmarks/c/combinations/gcd_1+newton_1_7.i[2786,2799] [2021-11-25 17:51:47,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:51:47,265 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:51:47,277 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_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/sv-benchmarks/c/combinations/gcd_1+newton_1_7.i[1226,1239] [2021-11-25 17:51:47,290 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_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/sv-benchmarks/c/combinations/gcd_1+newton_1_7.i[2786,2799] [2021-11-25 17:51:47,291 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:51:47,305 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:51:47,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:47 WrapperNode [2021-11-25 17:51:47,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:51:47,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:51:47,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:51:47,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:51:47,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:47" (1/1) ... [2021-11-25 17:51:47,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:47" (1/1) ... [2021-11-25 17:51:47,357 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-11-25 17:51:47,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:51:47,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:51:47,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:51:47,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:51:47,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:47" (1/1) ... [2021-11-25 17:51:47,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:47" (1/1) ... [2021-11-25 17:51:47,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:47" (1/1) ... [2021-11-25 17:51:47,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:47" (1/1) ... [2021-11-25 17:51:47,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:47" (1/1) ... [2021-11-25 17:51:47,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:47" (1/1) ... [2021-11-25 17:51:47,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:47" (1/1) ... [2021-11-25 17:51:47,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:51:47,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:51:47,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:51:47,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:51:47,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:47" (1/1) ... [2021-11-25 17:51:47,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:51:47,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:51:47,453 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:51:47,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:51:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:51:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 17:51:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:51:47,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:51:47,576 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:51:47,578 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:51:47,748 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:51:47,821 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:51:47,821 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 17:51:47,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:51:47 BoogieIcfgContainer [2021-11-25 17:51:47,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:51:47,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:51:47,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:51:47,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:51:47,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:51:47" (1/3) ... [2021-11-25 17:51:47,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e3c4186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:51:47, skipping insertion in model container [2021-11-25 17:51:47,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:47" (2/3) ... [2021-11-25 17:51:47,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e3c4186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:51:47, skipping insertion in model container [2021-11-25 17:51:47,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:51:47" (3/3) ... [2021-11-25 17:51:47,832 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_7.i [2021-11-25 17:51:47,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:51:47,837 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 17:51:47,885 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:51:47,893 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 [2021-11-25 17:51:47,893 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 17:51:47,907 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) [2021-11-25 17:51:47,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 17:51:47,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:47,913 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 17:51:47,913 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:51:47,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:47,919 INFO L85 PathProgramCache]: Analyzing trace with hash 3484809, now seen corresponding path program 1 times [2021-11-25 17:51:47,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:47,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839693246] [2021-11-25 17:51:47,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:47,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 17:51:48,088 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 17:51:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 17:51:48,147 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 17:51:48,150 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 17:51:48,152 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-25 17:51:48,154 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-25 17:51:48,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 17:51:48,160 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-25 17:51:48,164 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 17:51:48,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:51:48 BoogieIcfgContainer [2021-11-25 17:51:48,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 17:51:48,195 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 17:51:48,195 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 17:51:48,196 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 17:51:48,196 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:51:47" (3/4) ... [2021-11-25 17:51:48,199 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 17:51:48,200 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 17:51:48,201 INFO L158 Benchmark]: Toolchain (without parser) took 1182.76ms. Allocated memory is still 104.9MB. Free memory was 62.8MB in the beginning and 48.5MB in the end (delta: 14.3MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2021-11-25 17:51:48,202 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 104.9MB. Free memory was 79.3MB in the beginning and 79.2MB in the end (delta: 50.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:51:48,204 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.53ms. Allocated memory is still 104.9MB. Free memory was 62.6MB in the beginning and 78.1MB in the end (delta: -15.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 17:51:48,205 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.72ms. Allocated memory is still 104.9MB. Free memory was 78.1MB in the beginning and 76.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 17:51:48,210 INFO L158 Benchmark]: Boogie Preprocessor took 52.61ms. Allocated memory is still 104.9MB. Free memory was 76.1MB in the beginning and 74.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:51:48,212 INFO L158 Benchmark]: RCFGBuilder took 409.13ms. Allocated memory is still 104.9MB. Free memory was 74.8MB in the beginning and 62.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 17:51:48,213 INFO L158 Benchmark]: TraceAbstraction took 365.21ms. Allocated memory is still 104.9MB. Free memory was 61.7MB in the beginning and 48.8MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 17:51:48,214 INFO L158 Benchmark]: Witness Printer took 4.84ms. Allocated memory is still 104.9MB. Free memory was 48.8MB in the beginning and 48.5MB in the end (delta: 318.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:51:48,224 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 104.9MB. Free memory was 79.3MB in the beginning and 79.2MB in the end (delta: 50.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.53ms. Allocated memory is still 104.9MB. Free memory was 62.6MB in the beginning and 78.1MB in the end (delta: -15.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.72ms. Allocated memory is still 104.9MB. Free memory was 78.1MB in the beginning and 76.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.61ms. Allocated memory is still 104.9MB. Free memory was 76.1MB in the beginning and 74.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 409.13ms. Allocated memory is still 104.9MB. Free memory was 74.8MB in the beginning and 62.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 365.21ms. Allocated memory is still 104.9MB. Free memory was 61.7MB in the beginning and 48.8MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.84ms. Allocated memory is still 104.9MB. Free memory was 48.8MB in the beginning and 48.5MB in the end (delta: 318.3kB). 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 > -1.4f && IN < 1.4f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [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: 0.3s, 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 [2021-11-25 17:51:48,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/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_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_1_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7 --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 7f72f5580e8ee240383987c5e02610bf09387ce8fa780da3ef6f20ea144f2408 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:51:50,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:51:50,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:51:50,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:51:50,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:51:50,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:51:50,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:51:50,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:51:50,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:51:50,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:51:50,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:51:50,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:51:50,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:51:50,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:51:50,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:51:50,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:51:50,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:51:50,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:51:50,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:51:50,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:51:50,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:51:50,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:51:50,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:51:50,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:51:50,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:51:50,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:51:50,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:51:50,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:51:50,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:51:50,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:51:50,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:51:50,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:51:50,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:51:50,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:51:50,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:51:50,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:51:50,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:51:50,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:51:50,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:51:50,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:51:50,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:51:50,870 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 17:51:50,895 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:51:50,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:51:50,895 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:51:50,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:51:50,896 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:51:50,897 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:51:50,897 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:51:50,897 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:51:50,897 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:51:50,898 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:51:50,898 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:51:50,898 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:51:50,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:51:50,899 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 17:51:50,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 17:51:50,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:51:50,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:51:50,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:51:50,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:51:50,901 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 17:51:50,901 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 17:51:50,901 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 17:51:50,901 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 17:51:50,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:51:50,902 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:51:50,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:51:50,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:51:50,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 17:51:50,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:51:50,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:51:50,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:51:50,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:51:50,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:51:50,904 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 17:51:50,904 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 17:51:50,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:51:50,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:51:50,905 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:51:50,905 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_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f72f5580e8ee240383987c5e02610bf09387ce8fa780da3ef6f20ea144f2408 [2021-11-25 17:51:51,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:51:51,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:51:51,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:51:51,294 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:51:51,295 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:51:51,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/gcd_1+newton_1_7.i [2021-11-25 17:51:51,367 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/data/1bb727784/9d850c40d8b04c03850929cf028c0f2c/FLAGe75e72398 [2021-11-25 17:51:51,834 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:51:51,835 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/sv-benchmarks/c/combinations/gcd_1+newton_1_7.i [2021-11-25 17:51:51,849 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/data/1bb727784/9d850c40d8b04c03850929cf028c0f2c/FLAGe75e72398 [2021-11-25 17:51:52,223 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/data/1bb727784/9d850c40d8b04c03850929cf028c0f2c [2021-11-25 17:51:52,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:51:52,228 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:51:52,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:51:52,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:51:52,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:51:52,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:51:52" (1/1) ... [2021-11-25 17:51:52,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fd3a253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:52, skipping insertion in model container [2021-11-25 17:51:52,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:51:52" (1/1) ... [2021-11-25 17:51:52,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:51:52,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:51:52,456 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_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/sv-benchmarks/c/combinations/gcd_1+newton_1_7.i[1226,1239] [2021-11-25 17:51:52,485 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_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/sv-benchmarks/c/combinations/gcd_1+newton_1_7.i[2786,2799] [2021-11-25 17:51:52,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:51:52,498 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:51:52,542 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_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/sv-benchmarks/c/combinations/gcd_1+newton_1_7.i[1226,1239] [2021-11-25 17:51:52,559 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_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/sv-benchmarks/c/combinations/gcd_1+newton_1_7.i[2786,2799] [2021-11-25 17:51:52,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:51:52,589 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:51:52,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:52 WrapperNode [2021-11-25 17:51:52,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:51:52,591 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:51:52,591 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:51:52,591 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:51:52,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:52" (1/1) ... [2021-11-25 17:51:52,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:52" (1/1) ... [2021-11-25 17:51:52,659 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-11-25 17:51:52,660 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:51:52,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:51:52,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:51:52,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:51:52,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:52" (1/1) ... [2021-11-25 17:51:52,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:52" (1/1) ... [2021-11-25 17:51:52,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:52" (1/1) ... [2021-11-25 17:51:52,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:52" (1/1) ... [2021-11-25 17:51:52,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:52" (1/1) ... [2021-11-25 17:51:52,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:52" (1/1) ... [2021-11-25 17:51:52,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:52" (1/1) ... [2021-11-25 17:51:52,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:51:52,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:51:52,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:51:52,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:51:52,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:52" (1/1) ... [2021-11-25 17:51:52,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:51:52,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:51:52,755 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:51:52,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:51:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:51:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 17:51:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:51:52,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:51:52,894 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:51:52,896 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:51:59,337 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:51:59,343 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:51:59,343 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 17:51:59,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:51:59 BoogieIcfgContainer [2021-11-25 17:51:59,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:51:59,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:51:59,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:51:59,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:51:59,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:51:52" (1/3) ... [2021-11-25 17:51:59,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d013a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:51:59, skipping insertion in model container [2021-11-25 17:51:59,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:52" (2/3) ... [2021-11-25 17:51:59,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d013a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:51:59, skipping insertion in model container [2021-11-25 17:51:59,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:51:59" (3/3) ... [2021-11-25 17:51:59,354 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_7.i [2021-11-25 17:51:59,360 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:51:59,360 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 17:51:59,417 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:51:59,424 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 [2021-11-25 17:51:59,424 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 17:51:59,439 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) [2021-11-25 17:51:59,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 17:51:59,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:59,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:51:59,446 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:51:59,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:59,452 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-11-25 17:51:59,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:51:59,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627172914] [2021-11-25 17:51:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:59,467 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:51:59,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:51:59,470 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:51:59,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 17:52:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:00,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 17:52:00,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:52:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:00,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:52:00,790 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:52:00,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627172914] [2021-11-25 17:52:00,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627172914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:00,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:00,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 17:52:00,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339055893] [2021-11-25 17:52:00,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:00,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 17:52:00,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:52:00,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 17:52:00,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 17:52:00,837 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) [2021-11-25 17:52:00,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:00,856 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-11-25 17:52:00,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 17:52:00,859 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 [2021-11-25 17:52:00,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:00,868 INFO L225 Difference]: With dead ends: 46 [2021-11-25 17:52:00,868 INFO L226 Difference]: Without dead ends: 19 [2021-11-25 17:52:00,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 17:52:00,876 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:00,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:52:00,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-25 17:52:00,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-25 17:52:00,910 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) [2021-11-25 17:52:00,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-25 17:52:00,913 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-11-25 17:52:00,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:00,913 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-25 17:52:00,914 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) [2021-11-25 17:52:00,914 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-25 17:52:00,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 17:52:00,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:00,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:52:00,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 17:52:01,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:52:01,132 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:52:01,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:01,133 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-11-25 17:52:01,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:52:01,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706964639] [2021-11-25 17:52:01,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:01,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:52:01,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:52:01,141 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:52:01,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 17:52:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 17:52:06,358 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 17:54:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 17:54:06,565 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-25 17:54:06,566 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 17:54:06,568 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-25 17:54:06,592 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-25 17:54:06,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 17:54:06,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:54:06,796 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-25 17:54:06,803 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 17:54:06,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:54:06 BoogieIcfgContainer [2021-11-25 17:54:06,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 17:54:06,840 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 17:54:06,840 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 17:54:06,840 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 17:54:06,841 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:51:59" (3/4) ... [2021-11-25 17:54:06,842 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 17:54:06,877 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 17:54:06,878 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 17:54:06,878 INFO L158 Benchmark]: Toolchain (without parser) took 134649.76ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 36.6MB in the beginning and 53.2MB in the end (delta: -16.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:54:06,879 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 58.7MB. Free memory was 38.6MB in the beginning and 38.6MB in the end (delta: 42.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:54:06,880 INFO L158 Benchmark]: CACSL2BoogieTranslator took 359.96ms. Allocated memory is still 58.7MB. Free memory was 36.4MB in the beginning and 41.5MB in the end (delta: -5.2MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2021-11-25 17:54:06,880 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.60ms. Allocated memory is still 58.7MB. Free memory was 41.4MB in the beginning and 39.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 17:54:06,881 INFO L158 Benchmark]: Boogie Preprocessor took 58.64ms. Allocated memory is still 58.7MB. Free memory was 39.6MB in the beginning and 38.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:54:06,881 INFO L158 Benchmark]: RCFGBuilder took 6625.92ms. Allocated memory is still 58.7MB. Free memory was 38.1MB in the beginning and 27.9MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 17:54:06,882 INFO L158 Benchmark]: TraceAbstraction took 127491.54ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 27.4MB in the beginning and 55.1MB in the end (delta: -27.6MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2021-11-25 17:54:06,882 INFO L158 Benchmark]: Witness Printer took 37.88ms. Allocated memory is still 75.5MB. Free memory was 55.1MB in the beginning and 53.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 17:54:06,885 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 58.7MB. Free memory was 38.6MB in the beginning and 38.6MB in the end (delta: 42.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 359.96ms. Allocated memory is still 58.7MB. Free memory was 36.4MB in the beginning and 41.5MB in the end (delta: -5.2MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.60ms. Allocated memory is still 58.7MB. Free memory was 41.4MB in the beginning and 39.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.64ms. Allocated memory is still 58.7MB. Free memory was 39.6MB in the beginning and 38.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 6625.92ms. Allocated memory is still 58.7MB. Free memory was 38.1MB in the beginning and 27.9MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 127491.54ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 27.4MB in the beginning and 55.1MB in the end (delta: -27.6MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * Witness Printer took 37.88ms. Allocated memory is still 75.5MB. Free memory was 55.1MB in the beginning and 53.2MB in the end (delta: 1.9MB). 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 > -1.4f && IN < 1.4f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [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)=-1.3358972072601318, \result=-0.9755142331123352, x=-1.3358972072601318] [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)=-1.3358972072601318, \result=0.24828653037548065, x=-1.3358972072601318] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=-1.3358972072601318, x=2.5930886268615723] [L102] reach_error() VAL [IN=-1.3358972072601318, x=2.5930886268615723] - 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: 127.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 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, 6.3s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-25 17:54:07,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b41d3a37-a1d0-4e1c-b131-4016aa363cd0/bin/utaipan-eEHZpOm5b7/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