./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan --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 83c30cf69d350d7f7844d9a61780744d2d19365f ........................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan --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 83c30cf69d350d7f7844d9a61780744d2d19365f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-03 12:30:59,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:30:59,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:30:59,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:30:59,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:30:59,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:30:59,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:30:59,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:30:59,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:30:59,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:30:59,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:30:59,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:30:59,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:30:59,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:30:59,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:30:59,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:30:59,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:30:59,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:30:59,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:30:59,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:30:59,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:30:59,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:30:59,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:30:59,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:30:59,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:30:59,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:30:59,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:30:59,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:30:59,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:30:59,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:30:59,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:30:59,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:30:59,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:30:59,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:30:59,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:30:59,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:30:59,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:30:59,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:30:59,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:30:59,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:30:59,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:30:59,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-03 12:30:59,739 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:30:59,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:30:59,741 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:30:59,741 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:30:59,741 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:30:59,742 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:30:59,742 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:30:59,742 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:30:59,742 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:30:59,742 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:30:59,743 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:30:59,743 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:30:59,743 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:30:59,743 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:30:59,743 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:30:59,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:30:59,744 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:30:59,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:30:59,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:30:59,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:30:59,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:30:59,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:30:59,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:30:59,746 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:30:59,746 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:30:59,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:30:59,746 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:30:59,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:30:59,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:30:59,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:30:59,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:30:59,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:30:59,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:30:59,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:30:59,748 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:30:59,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:30:59,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:30:59,749 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:30:59,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:30:59,749 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-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83c30cf69d350d7f7844d9a61780744d2d19365f [2020-12-03 12:31:00,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:31:00,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:31:00,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:31:00,038 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:31:00,039 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:31:00,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2020-12-03 12:31:00,126 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/data/940989683/290f66c8826142559d2225b6c3633730/FLAG36e49cdaf [2020-12-03 12:31:00,587 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:31:00,587 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2020-12-03 12:31:00,616 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/data/940989683/290f66c8826142559d2225b6c3633730/FLAG36e49cdaf [2020-12-03 12:31:00,953 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/data/940989683/290f66c8826142559d2225b6c3633730 [2020-12-03 12:31:00,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:31:00,956 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:31:00,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:31:00,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:31:00,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:31:00,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:31:00" (1/1) ... [2020-12-03 12:31:00,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5681b2d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:00, skipping insertion in model container [2020-12-03 12:31:00,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:31:00" (1/1) ... [2020-12-03 12:31:00,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:31:01,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:31:01,213 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2020-12-03 12:31:01,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:31:01,223 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:31:01,263 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2020-12-03 12:31:01,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:31:01,276 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:31:01,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:01 WrapperNode [2020-12-03 12:31:01,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:31:01,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:31:01,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:31:01,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:31:01,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:01" (1/1) ... [2020-12-03 12:31:01,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:01" (1/1) ... [2020-12-03 12:31:01,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:31:01,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:31:01,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:31:01,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:31:01,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:01" (1/1) ... [2020-12-03 12:31:01,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:01" (1/1) ... [2020-12-03 12:31:01,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:01" (1/1) ... [2020-12-03 12:31:01,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:01" (1/1) ... [2020-12-03 12:31:01,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:01" (1/1) ... [2020-12-03 12:31:01,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:01" (1/1) ... [2020-12-03 12:31:01,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:01" (1/1) ... [2020-12-03 12:31:01,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:31:01,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:31:01,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:31:01,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:31:01,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:31:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 12:31:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:31:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-03 12:31:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-03 12:31:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-03 12:31:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:31:01,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:31:01,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-03 12:31:01,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-03 12:31:02,443 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:31:02,443 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-03 12:31:02,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:31:02 BoogieIcfgContainer [2020-12-03 12:31:02,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:31:02,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:31:02,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:31:02,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:31:02,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:31:00" (1/3) ... [2020-12-03 12:31:02,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df543e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:31:02, skipping insertion in model container [2020-12-03 12:31:02,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:01" (2/3) ... [2020-12-03 12:31:02,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df543e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:31:02, skipping insertion in model container [2020-12-03 12:31:02,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:31:02" (3/3) ... [2020-12-03 12:31:02,456 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2020-12-03 12:31:02,470 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:31:02,474 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-03 12:31:02,485 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-03 12:31:02,525 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:31:02,525 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:31:02,525 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:31:02,525 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:31:02,525 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:31:02,526 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:31:02,526 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:31:02,526 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:31:02,541 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-12-03 12:31:02,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-03 12:31:02,546 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:31:02,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:31:02,547 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:31:02,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:31:02,553 INFO L82 PathProgramCache]: Analyzing trace with hash -323894289, now seen corresponding path program 1 times [2020-12-03 12:31:02,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:31:02,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685214054] [2020-12-03 12:31:02,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:31:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:31:02,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:31:02,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685214054] [2020-12-03 12:31:02,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:31:02,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:31:02,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407437897] [2020-12-03 12:31:02,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-03 12:31:02,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:31:02,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-03 12:31:02,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-03 12:31:02,742 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-12-03 12:31:02,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:31:02,772 INFO L93 Difference]: Finished difference Result 53 states and 85 transitions. [2020-12-03 12:31:02,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-03 12:31:02,774 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-03 12:31:02,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:31:02,787 INFO L225 Difference]: With dead ends: 53 [2020-12-03 12:31:02,787 INFO L226 Difference]: Without dead ends: 25 [2020-12-03 12:31:02,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-03 12:31:02,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-03 12:31:02,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-12-03 12:31:02,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-03 12:31:02,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2020-12-03 12:31:02,833 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 7 [2020-12-03 12:31:02,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:31:02,833 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2020-12-03 12:31:02,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-03 12:31:02,834 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2020-12-03 12:31:02,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-03 12:31:02,834 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:31:02,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:31:02,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:31:02,835 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:31:02,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:31:02,838 INFO L82 PathProgramCache]: Analyzing trace with hash 572312428, now seen corresponding path program 1 times [2020-12-03 12:31:02,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:31:02,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696459182] [2020-12-03 12:31:02,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:31:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:31:02,891 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:31:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:31:02,920 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:31:02,952 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-03 12:31:02,953 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-03 12:31:02,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-03 12:31:02,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:31:02 BoogieIcfgContainer [2020-12-03 12:31:02,979 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:31:02,980 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:31:02,980 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:31:02,980 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:31:02,980 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:31:02" (3/4) ... [2020-12-03 12:31:02,983 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-03 12:31:02,984 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:31:02,986 INFO L168 Benchmark]: Toolchain (without parser) took 2028.23 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 50.7 MB in the beginning and 49.8 MB in the end (delta: 854.6 kB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:02,987 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 56.5 MB in the beginning and 56.4 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:31:02,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.34 ms. Allocated memory is still 83.9 MB. Free memory was 50.7 MB in the beginning and 59.0 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:02,988 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.57 ms. Allocated memory is still 83.9 MB. Free memory was 59.0 MB in the beginning and 56.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:02,989 INFO L168 Benchmark]: Boogie Preprocessor took 53.87 ms. Allocated memory is still 83.9 MB. Free memory was 56.9 MB in the beginning and 55.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:02,989 INFO L168 Benchmark]: RCFGBuilder took 1057.61 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 55.2 MB in the beginning and 72.8 MB in the end (delta: -17.6 MB). Peak memory consumption was 35.0 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:02,990 INFO L168 Benchmark]: TraceAbstraction took 531.06 ms. Allocated memory is still 100.7 MB. Free memory was 72.2 MB in the beginning and 50.5 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:02,991 INFO L168 Benchmark]: Witness Printer took 4.05 ms. Allocated memory is still 100.7 MB. Free memory was 50.5 MB in the beginning and 49.8 MB in the end (delta: 693.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:31:02,995 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 56.5 MB in the beginning and 56.4 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 315.34 ms. Allocated memory is still 83.9 MB. Free memory was 50.7 MB in the beginning and 59.0 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.57 ms. Allocated memory is still 83.9 MB. Free memory was 59.0 MB in the beginning and 56.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.87 ms. Allocated memory is still 83.9 MB. Free memory was 56.9 MB in the beginning and 55.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1057.61 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 55.2 MB in the beginning and 72.8 MB in the end (delta: -17.6 MB). Peak memory consumption was 35.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 531.06 ms. Allocated memory is still 100.7 MB. Free memory was 72.2 MB in the beginning and 50.5 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.05 ms. Allocated memory is still 100.7 MB. Free memory was 50.5 MB in the beginning and 49.8 MB in the end (delta: 693.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 156]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 155, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of bitwiseAnd at line 34. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L151] double x = 0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L155] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L156] reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-03 12:31:05,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:31:05,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:31:05,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:31:05,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:31:05,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:31:05,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:31:05,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:31:05,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:31:05,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:31:05,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:31:05,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:31:05,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:31:05,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:31:05,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:31:05,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:31:05,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:31:05,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:31:05,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:31:05,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:31:05,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:31:05,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:31:05,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:31:05,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:31:05,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:31:05,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:31:05,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:31:05,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:31:05,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:31:05,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:31:05,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:31:05,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:31:05,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:31:05,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:31:05,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:31:05,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:31:05,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:31:05,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:31:05,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:31:05,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:31:05,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:31:05,606 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-03 12:31:05,649 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:31:05,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:31:05,651 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:31:05,652 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:31:05,652 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:31:05,652 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:31:05,652 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:31:05,653 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:31:05,653 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:31:05,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:31:05,655 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:31:05,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:31:05,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:31:05,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:31:05,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:31:05,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:31:05,657 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:31:05,657 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-03 12:31:05,657 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-03 12:31:05,657 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:31:05,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:31:05,658 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:31:05,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:31:05,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:31:05,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-03 12:31:05,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:31:05,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:31:05,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:31:05,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:31:05,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:31:05,666 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-03 12:31:05,667 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-03 12:31:05,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:31:05,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:31:05,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:31:05,668 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-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83c30cf69d350d7f7844d9a61780744d2d19365f [2020-12-03 12:31:06,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:31:06,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:31:06,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:31:06,056 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:31:06,057 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:31:06,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2020-12-03 12:31:06,125 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/data/dcdb94ae0/b83f55a9db764457ab535ec645f798c9/FLAG5fbdbb7e1 [2020-12-03 12:31:06,720 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:31:06,720 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2020-12-03 12:31:06,727 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/data/dcdb94ae0/b83f55a9db764457ab535ec645f798c9/FLAG5fbdbb7e1 [2020-12-03 12:31:07,067 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/data/dcdb94ae0/b83f55a9db764457ab535ec645f798c9 [2020-12-03 12:31:07,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:31:07,071 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:31:07,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:31:07,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:31:07,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:31:07,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:31:07" (1/1) ... [2020-12-03 12:31:07,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0fba83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:07, skipping insertion in model container [2020-12-03 12:31:07,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:31:07" (1/1) ... [2020-12-03 12:31:07,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:31:07,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:31:07,309 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2020-12-03 12:31:07,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:31:07,328 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:31:07,431 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2020-12-03 12:31:07,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:31:07,469 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:31:07,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:07 WrapperNode [2020-12-03 12:31:07,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:31:07,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:31:07,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:31:07,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:31:07,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:07" (1/1) ... [2020-12-03 12:31:07,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:07" (1/1) ... [2020-12-03 12:31:07,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:31:07,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:31:07,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:31:07,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:31:07,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:07" (1/1) ... [2020-12-03 12:31:07,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:07" (1/1) ... [2020-12-03 12:31:07,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:07" (1/1) ... [2020-12-03 12:31:07,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:07" (1/1) ... [2020-12-03 12:31:07,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:07" (1/1) ... [2020-12-03 12:31:07,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:07" (1/1) ... [2020-12-03 12:31:07,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:07" (1/1) ... [2020-12-03 12:31:07,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:31:07,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:31:07,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:31:07,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:31:07,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:31:07,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-03 12:31:07,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-03 12:31:07,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-03 12:31:07,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:31:07,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-03 12:31:07,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:31:07,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:31:07,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-03 12:31:07,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-03 12:31:13,497 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:31:13,498 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-03 12:31:13,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:31:13 BoogieIcfgContainer [2020-12-03 12:31:13,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:31:13,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:31:13,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:31:13,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:31:13,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:31:07" (1/3) ... [2020-12-03 12:31:13,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3300dac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:31:13, skipping insertion in model container [2020-12-03 12:31:13,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:07" (2/3) ... [2020-12-03 12:31:13,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3300dac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:31:13, skipping insertion in model container [2020-12-03 12:31:13,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:31:13" (3/3) ... [2020-12-03 12:31:13,508 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2020-12-03 12:31:13,522 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:31:13,526 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-03 12:31:13,537 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-03 12:31:13,561 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:31:13,562 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:31:13,562 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:31:13,562 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:31:13,562 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:31:13,562 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:31:13,563 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:31:13,563 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:31:13,576 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-12-03 12:31:13,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-03 12:31:13,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:31:13,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:31:13,582 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:31:13,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:31:13,588 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2020-12-03 12:31:13,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:31:13,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509699544] [2020-12-03 12:31:13,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-03 12:31:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:31:14,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-03 12:31:14,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:31:14,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:31:14,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:31:14,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509699544] [2020-12-03 12:31:14,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:31:14,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:31:14,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919064489] [2020-12-03 12:31:14,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-03 12:31:14,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:31:14,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-03 12:31:14,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-03 12:31:14,066 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2020-12-03 12:31:14,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:31:14,087 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2020-12-03 12:31:14,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-03 12:31:14,088 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-03 12:31:14,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:31:14,097 INFO L225 Difference]: With dead ends: 104 [2020-12-03 12:31:14,098 INFO L226 Difference]: Without dead ends: 50 [2020-12-03 12:31:14,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-03 12:31:14,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-03 12:31:14,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-03 12:31:14,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-03 12:31:14,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2020-12-03 12:31:14,136 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2020-12-03 12:31:14,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:31:14,136 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2020-12-03 12:31:14,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-03 12:31:14,137 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-12-03 12:31:14,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-03 12:31:14,137 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:31:14,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:31:14,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-03 12:31:14,349 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:31:14,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:31:14,351 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2020-12-03 12:31:14,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:31:14,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283998931] [2020-12-03 12:31:14,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-03 12:31:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:31:14,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-03 12:31:14,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:31:14,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:31:14,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:31:14,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283998931] [2020-12-03 12:31:14,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:31:14,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:31:14,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454456608] [2020-12-03 12:31:14,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:31:14,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:31:14,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:31:14,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:31:14,940 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand 4 states. [2020-12-03 12:31:16,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:31:16,398 INFO L93 Difference]: Finished difference Result 104 states and 141 transitions. [2020-12-03 12:31:16,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:31:16,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-03 12:31:16,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:31:16,400 INFO L225 Difference]: With dead ends: 104 [2020-12-03 12:31:16,401 INFO L226 Difference]: Without dead ends: 62 [2020-12-03 12:31:16,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:31:16,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-03 12:31:16,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 51. [2020-12-03 12:31:16,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-03 12:31:16,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2020-12-03 12:31:16,417 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 9 [2020-12-03 12:31:16,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:31:16,417 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2020-12-03 12:31:16,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:31:16,418 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2020-12-03 12:31:16,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-03 12:31:16,418 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:31:16,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:31:16,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-03 12:31:16,640 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:31:16,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:31:16,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2020-12-03 12:31:16,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:31:16,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201995142] [2020-12-03 12:31:16,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-03 12:31:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:31:16,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-03 12:31:16,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:31:16,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:31:16,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:31:16,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201995142] [2020-12-03 12:31:16,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:31:16,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 12:31:16,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928501383] [2020-12-03 12:31:16,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:31:16,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:31:16,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:31:16,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:31:16,926 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand 5 states. [2020-12-03 12:31:17,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:31:17,172 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2020-12-03 12:31:17,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-03 12:31:17,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-03 12:31:17,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:31:17,175 INFO L225 Difference]: With dead ends: 63 [2020-12-03 12:31:17,175 INFO L226 Difference]: Without dead ends: 60 [2020-12-03 12:31:17,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-03 12:31:17,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-03 12:31:17,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2020-12-03 12:31:17,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-03 12:31:17,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 70 transitions. [2020-12-03 12:31:17,184 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 70 transitions. Word has length 11 [2020-12-03 12:31:17,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:31:17,184 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 70 transitions. [2020-12-03 12:31:17,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:31:17,185 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 70 transitions. [2020-12-03 12:31:17,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-03 12:31:17,185 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:31:17,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:31:17,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-03 12:31:17,394 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:31:17,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:31:17,395 INFO L82 PathProgramCache]: Analyzing trace with hash 264903321, now seen corresponding path program 1 times [2020-12-03 12:31:17,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:31:17,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764193467] [2020-12-03 12:31:17,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-03 12:31:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:31:17,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-03 12:31:17,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:31:17,786 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-03 12:31:18,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:31:18,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:31:18,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764193467] [2020-12-03 12:31:18,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:31:18,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-03 12:31:18,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901149036] [2020-12-03 12:31:18,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-03 12:31:18,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:31:18,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-03 12:31:18,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-03 12:31:18,009 INFO L87 Difference]: Start difference. First operand 53 states and 70 transitions. Second operand 9 states. [2020-12-03 12:31:18,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:31:18,896 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2020-12-03 12:31:18,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-03 12:31:18,896 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-12-03 12:31:18,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:31:18,897 INFO L225 Difference]: With dead ends: 60 [2020-12-03 12:31:18,897 INFO L226 Difference]: Without dead ends: 51 [2020-12-03 12:31:18,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-12-03 12:31:18,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-03 12:31:18,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-12-03 12:31:18,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-03 12:31:18,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2020-12-03 12:31:18,905 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 15 [2020-12-03 12:31:18,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:31:18,905 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2020-12-03 12:31:18,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-03 12:31:18,905 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2020-12-03 12:31:18,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-03 12:31:18,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:31:18,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:31:19,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-03 12:31:19,123 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:31:19,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:31:19,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1807617568, now seen corresponding path program 1 times [2020-12-03 12:31:19,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:31:19,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152461993] [2020-12-03 12:31:19,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-03 12:31:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:31:19,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-03 12:31:19,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:31:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:31:19,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:31:19,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152461993] [2020-12-03 12:31:19,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:31:19,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 12:31:19,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451658248] [2020-12-03 12:31:19,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:31:19,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:31:19,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:31:19,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:31:19,466 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand 5 states. [2020-12-03 12:31:20,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:31:20,114 INFO L93 Difference]: Finished difference Result 87 states and 116 transitions. [2020-12-03 12:31:20,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:31:20,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-12-03 12:31:20,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:31:20,116 INFO L225 Difference]: With dead ends: 87 [2020-12-03 12:31:20,117 INFO L226 Difference]: Without dead ends: 52 [2020-12-03 12:31:20,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-03 12:31:20,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-03 12:31:20,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-12-03 12:31:20,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-03 12:31:20,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2020-12-03 12:31:20,124 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 27 [2020-12-03 12:31:20,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:31:20,124 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2020-12-03 12:31:20,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:31:20,125 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2020-12-03 12:31:20,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-03 12:31:20,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:31:20,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:31:20,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-03 12:31:20,339 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:31:20,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:31:20,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1685732611, now seen corresponding path program 1 times [2020-12-03 12:31:20,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:31:20,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758857806] [2020-12-03 12:31:20,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-03 12:31:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:31:20,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-03 12:31:20,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:31:20,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-03 12:31:20,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:31:20,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758857806] [2020-12-03 12:31:20,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:31:20,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 12:31:20,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493771792] [2020-12-03 12:31:20,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:31:20,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:31:20,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:31:20,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:31:20,545 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand 3 states. [2020-12-03 12:31:20,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:31:20,665 INFO L93 Difference]: Finished difference Result 83 states and 110 transitions. [2020-12-03 12:31:20,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:31:20,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-12-03 12:31:20,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:31:20,668 INFO L225 Difference]: With dead ends: 83 [2020-12-03 12:31:20,668 INFO L226 Difference]: Without dead ends: 54 [2020-12-03 12:31:20,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:31:20,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-03 12:31:20,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-12-03 12:31:20,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-03 12:31:20,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2020-12-03 12:31:20,679 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 32 [2020-12-03 12:31:20,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:31:20,681 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2020-12-03 12:31:20,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:31:20,681 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2020-12-03 12:31:20,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-03 12:31:20,683 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:31:20,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:31:20,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-03 12:31:20,898 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:31:20,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:31:20,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1622546113, now seen corresponding path program 1 times [2020-12-03 12:31:20,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:31:20,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815020445] [2020-12-03 12:31:20,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-03 12:31:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:31:21,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 12:31:21,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:31:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-03 12:31:21,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:31:21,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-03 12:31:21,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815020445] [2020-12-03 12:31:21,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1556167278] [2020-12-03 12:31:21,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt [2020-12-03 12:31:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:31:21,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 12:31:21,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:31:21,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-03 12:31:21,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:31:21,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-03 12:31:21,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2020-12-03 12:31:21,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832629581] [2020-12-03 12:31:21,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:31:21,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:31:21,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:31:21,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-03 12:31:21,568 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand 4 states. [2020-12-03 12:31:21,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:31:21,782 INFO L93 Difference]: Finished difference Result 80 states and 105 transitions. [2020-12-03 12:31:21,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:31:21,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-12-03 12:31:21,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:31:21,784 INFO L225 Difference]: With dead ends: 80 [2020-12-03 12:31:21,784 INFO L226 Difference]: Without dead ends: 59 [2020-12-03 12:31:21,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-12-03 12:31:21,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-03 12:31:21,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2020-12-03 12:31:21,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-03 12:31:21,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2020-12-03 12:31:21,793 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 35 [2020-12-03 12:31:21,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:31:21,793 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2020-12-03 12:31:21,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:31:21,794 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2020-12-03 12:31:21,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-03 12:31:21,795 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:31:21,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:31:22,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt,8 mathsat -unsat_core_generation=3 [2020-12-03 12:31:22,198 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:31:22,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:31:22,198 INFO L82 PathProgramCache]: Analyzing trace with hash 886415899, now seen corresponding path program 1 times [2020-12-03 12:31:22,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:31:22,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677042696] [2020-12-03 12:31:22,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-03 12:31:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:31:22,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 12:31:22,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:31:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-03 12:31:22,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:31:22,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-03 12:31:22,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677042696] [2020-12-03 12:31:22,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [135777838] [2020-12-03 12:31:22,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt [2020-12-03 12:31:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:31:22,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 12:31:22,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:31:22,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-03 12:31:22,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:31:22,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-03 12:31:22,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123154801] [2020-12-03 12:31:22,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 12:31:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:31:22,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 12:31:22,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:31:22,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-03 12:31:22,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:31:22,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-03 12:31:22,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-03 12:31:22,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2020-12-03 12:31:22,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890386326] [2020-12-03 12:31:22,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:31:22,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:31:22,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:31:22,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:31:22,927 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand 6 states. [2020-12-03 12:31:23,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:31:23,166 INFO L93 Difference]: Finished difference Result 92 states and 123 transitions. [2020-12-03 12:31:23,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-03 12:31:23,169 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-12-03 12:31:23,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:31:23,170 INFO L225 Difference]: With dead ends: 92 [2020-12-03 12:31:23,170 INFO L226 Difference]: Without dead ends: 62 [2020-12-03 12:31:23,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:31:23,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-03 12:31:23,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-12-03 12:31:23,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-03 12:31:23,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2020-12-03 12:31:23,179 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 38 [2020-12-03 12:31:23,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:31:23,179 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2020-12-03 12:31:23,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:31:23,180 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2020-12-03 12:31:23,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-03 12:31:23,181 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:31:23,181 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:31:23,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 mathsat -unsat_core_generation=3,11 cvc4 --incremental --print-success --lang smt [2020-12-03 12:31:23,790 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:31:23,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:31:23,791 INFO L82 PathProgramCache]: Analyzing trace with hash -84795879, now seen corresponding path program 2 times [2020-12-03 12:31:23,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:31:23,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554951791] [2020-12-03 12:31:23,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-12-03 12:31:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:31:23,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-03 12:31:23,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:31:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-03 12:31:24,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:31:24,460 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-03 12:31:24,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554951791] [2020-12-03 12:31:24,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1686351177] [2020-12-03 12:31:24,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt [2020-12-03 12:31:24,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-03 12:31:24,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-03 12:31:24,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-03 12:31:24,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:31:25,004 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2020-12-03 12:31:25,020 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-03 12:31:25,033 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-03 12:31:25,034 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-03 12:31:25,083 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-03 12:31:25,085 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-03 12:31:25,085 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:19 [2020-12-03 12:31:25,602 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-03 12:31:25,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:31:25,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-03 12:31:25,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 16 [2020-12-03 12:31:25,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810781615] [2020-12-03 12:31:25,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:31:25,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:31:25,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:31:25,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-12-03 12:31:25,606 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand 6 states. [2020-12-03 12:31:25,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:31:25,926 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2020-12-03 12:31:25,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:31:25,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-12-03 12:31:25,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:31:25,926 INFO L225 Difference]: With dead ends: 62 [2020-12-03 12:31:25,926 INFO L226 Difference]: Without dead ends: 0 [2020-12-03 12:31:25,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-12-03 12:31:25,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-03 12:31:25,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-03 12:31:25,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-03 12:31:25,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-03 12:31:25,928 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2020-12-03 12:31:25,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:31:25,929 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-03 12:31:25,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:31:25,929 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-03 12:31:25,929 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-03 12:31:26,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt,13 mathsat -unsat_core_generation=3 [2020-12-03 12:31:26,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-03 12:31:26,564 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-12-03 12:31:26,692 INFO L262 CegarLoopResult]: For program point L60(lines 60 63) no Hoare annotation was computed. [2020-12-03 12:31:26,692 INFO L262 CegarLoopResult]: For program point L27-1(lines 27 32) no Hoare annotation was computed. [2020-12-03 12:31:26,693 INFO L262 CegarLoopResult]: For program point L60-2(lines 60 63) no Hoare annotation was computed. [2020-12-03 12:31:26,693 INFO L258 CegarLoopResult]: At program point L27-2(lines 27 32) the Hoare annotation is: (and (= (bvadd ULTIMATE.start___ieee754_sqrt_~sign~0 (_ bv2147483648 32)) (_ bv0 32)) (= ULTIMATE.start___ieee754_sqrt_~x (_ +zero 11 53))) [2020-12-03 12:31:26,693 INFO L262 CegarLoopResult]: For program point L27-3(lines 21 129) no Hoare annotation was computed. [2020-12-03 12:31:26,693 INFO L262 CegarLoopResult]: For program point L52-2(lines 52 53) no Hoare annotation was computed. [2020-12-03 12:31:26,693 INFO L258 CegarLoopResult]: At program point L52-3(lines 52 53) the Hoare annotation is: false [2020-12-03 12:31:26,693 INFO L262 CegarLoopResult]: For program point L52-4(lines 52 53) no Hoare annotation was computed. [2020-12-03 12:31:26,693 INFO L262 CegarLoopResult]: For program point L110(lines 110 111) no Hoare annotation was computed. [2020-12-03 12:31:26,693 INFO L262 CegarLoopResult]: For program point L110-2(lines 110 111) no Hoare annotation was computed. [2020-12-03 12:31:26,694 INFO L262 CegarLoopResult]: For program point L102(lines 102 116) no Hoare annotation was computed. [2020-12-03 12:31:26,694 INFO L265 CegarLoopResult]: At program point L160(lines 143 161) the Hoare annotation is: true [2020-12-03 12:31:26,694 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-03 12:31:26,694 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-03 12:31:26,694 INFO L262 CegarLoopResult]: For program point L119(lines 119 120) no Hoare annotation was computed. [2020-12-03 12:31:26,694 INFO L262 CegarLoopResult]: For program point L119-2(lines 119 120) no Hoare annotation was computed. [2020-12-03 12:31:26,694 INFO L258 CegarLoopResult]: At program point L128(lines 21 129) the Hoare annotation is: (and (= (_ +zero 11 53) |ULTIMATE.start___ieee754_sqrt_#res|) (= ULTIMATE.start___ieee754_sqrt_~x (_ +zero 11 53))) [2020-12-03 12:31:26,694 INFO L262 CegarLoopResult]: For program point L87(lines 87 96) no Hoare annotation was computed. [2020-12-03 12:31:26,694 INFO L262 CegarLoopResult]: For program point L87-2(lines 87 96) no Hoare annotation was computed. [2020-12-03 12:31:26,694 INFO L262 CegarLoopResult]: For program point L46(lines 46 57) no Hoare annotation was computed. [2020-12-03 12:31:26,695 INFO L262 CegarLoopResult]: For program point L46-2(lines 46 57) no Hoare annotation was computed. [2020-12-03 12:31:26,695 INFO L262 CegarLoopResult]: For program point L104(lines 104 115) no Hoare annotation was computed. [2020-12-03 12:31:26,695 INFO L262 CegarLoopResult]: For program point L38(lines 38 43) no Hoare annotation was computed. [2020-12-03 12:31:26,695 INFO L258 CegarLoopResult]: At program point L71-2(lines 71 81) the Hoare annotation is: false [2020-12-03 12:31:26,695 INFO L262 CegarLoopResult]: For program point L38-2(lines 38 43) no Hoare annotation was computed. [2020-12-03 12:31:26,695 INFO L262 CegarLoopResult]: For program point L71-3(lines 71 81) no Hoare annotation was computed. [2020-12-03 12:31:26,695 INFO L258 CegarLoopResult]: At program point L47-2(lines 47 51) the Hoare annotation is: false [2020-12-03 12:31:26,695 INFO L262 CegarLoopResult]: For program point L47-3(lines 47 51) no Hoare annotation was computed. [2020-12-03 12:31:26,695 INFO L262 CegarLoopResult]: For program point L39(lines 39 42) no Hoare annotation was computed. [2020-12-03 12:31:26,695 INFO L262 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-12-03 12:31:26,696 INFO L262 CegarLoopResult]: For program point L89(lines 89 90) no Hoare annotation was computed. [2020-12-03 12:31:26,696 INFO L262 CegarLoopResult]: For program point L122-1(lines 122 127) no Hoare annotation was computed. [2020-12-03 12:31:26,696 INFO L262 CegarLoopResult]: For program point L155-2(lines 155 158) no Hoare annotation was computed. [2020-12-03 12:31:26,696 INFO L258 CegarLoopResult]: At program point L122-2(lines 122 127) the Hoare annotation is: false [2020-12-03 12:31:26,696 INFO L262 CegarLoopResult]: For program point L89-2(lines 89 90) no Hoare annotation was computed. [2020-12-03 12:31:26,696 INFO L262 CegarLoopResult]: For program point L122-3(lines 122 127) no Hoare annotation was computed. [2020-12-03 12:31:26,696 INFO L262 CegarLoopResult]: For program point L106(lines 106 114) no Hoare annotation was computed. [2020-12-03 12:31:26,696 INFO L262 CegarLoopResult]: For program point L73(lines 73 77) no Hoare annotation was computed. [2020-12-03 12:31:26,696 INFO L262 CegarLoopResult]: For program point L73-2(lines 73 77) no Hoare annotation was computed. [2020-12-03 12:31:26,696 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-03 12:31:26,697 INFO L262 CegarLoopResult]: For program point L156(line 156) no Hoare annotation was computed. [2020-12-03 12:31:26,697 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 156) no Hoare annotation was computed. [2020-12-03 12:31:26,697 INFO L258 CegarLoopResult]: At program point L140(lines 131 141) the Hoare annotation is: (and (= (_ +zero 11 53) |ULTIMATE.start___ieee754_sqrt_#res|) (= (_ +zero 11 53) ULTIMATE.start_main_~res~0) (exists ((|v_skolemized_q#valueAsBitvector_6| (_ BitVec 64))) (and (= ULTIMATE.start___signbit_double_~msw~0 ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_6|)) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_6|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_6|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_6|)) (_ +zero 11 53)))) (= |ULTIMATE.start___signbit_double_#res| (_ bv0 32)) (= ULTIMATE.start___signbit_double_~x (_ +zero 11 53)) (= ULTIMATE.start___ieee754_sqrt_~x (_ +zero 11 53)) |ULTIMATE.start_main_#t~short14|) [2020-12-03 12:31:26,697 INFO L262 CegarLoopResult]: For program point L41(lines 41 42) no Hoare annotation was computed. [2020-12-03 12:31:26,697 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-03 12:31:26,697 INFO L262 CegarLoopResult]: For program point L92(lines 92 93) no Hoare annotation was computed. [2020-12-03 12:31:26,697 INFO L262 CegarLoopResult]: For program point L92-2(lines 92 93) no Hoare annotation was computed. [2020-12-03 12:31:26,697 INFO L258 CegarLoopResult]: At program point L84-2(lines 84 100) the Hoare annotation is: false [2020-12-03 12:31:26,697 INFO L262 CegarLoopResult]: For program point L84-3(lines 21 129) no Hoare annotation was computed. [2020-12-03 12:31:26,698 INFO L262 CegarLoopResult]: For program point L109(lines 109 114) no Hoare annotation was computed. [2020-12-03 12:31:26,698 INFO L262 CegarLoopResult]: For program point L134-1(lines 134 138) no Hoare annotation was computed. [2020-12-03 12:31:26,698 INFO L258 CegarLoopResult]: At program point L134-2(lines 134 138) the Hoare annotation is: (and (= (_ +zero 11 53) |ULTIMATE.start___ieee754_sqrt_#res|) (= (_ +zero 11 53) ULTIMATE.start_main_~res~0) (= ULTIMATE.start___signbit_double_~x (_ +zero 11 53)) (= ULTIMATE.start___ieee754_sqrt_~x (_ +zero 11 53)) |ULTIMATE.start_main_#t~short14|) [2020-12-03 12:31:26,698 INFO L262 CegarLoopResult]: For program point L134-3(lines 134 138) no Hoare annotation was computed. [2020-12-03 12:31:26,713 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-03 12:31:26,714 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-03 12:31:26,714 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-03 12:31:26,715 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-03 12:31:26,720 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-03 12:31:26,720 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-03 12:31:26,721 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-03 12:31:26,721 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-03 12:31:26,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:31:26 BoogieIcfgContainer [2020-12-03 12:31:26,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:31:26,725 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:31:26,725 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:31:26,729 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:31:26,730 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:31:13" (3/4) ... [2020-12-03 12:31:26,733 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-03 12:31:26,748 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-03 12:31:26,749 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-03 12:31:26,749 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:31:26,750 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:31:26,779 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ~Pluszero~LONGDOUBLE() == \result && x == ~Pluszero~LONGDOUBLE() [2020-12-03 12:31:26,781 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux [2020-12-03 12:31:26,782 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == res) && (\exists v_skolemized_q#valueAsBitvector_6 : bv64 :: msw == v_skolemized_q#valueAsBitvector_6[63:32] && ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_6[63:63], v_skolemized_q#valueAsBitvector_6[62:52], v_skolemized_q#valueAsBitvector_6[51:0]) == ~Pluszero~LONGDOUBLE())) && \result == 0bv32) && x == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux [2020-12-03 12:31:26,819 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b6dc94c1-6e03-4475-bf16-68928d795d0b/bin/utaipan/witness.graphml [2020-12-03 12:31:26,819 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:31:26,820 INFO L168 Benchmark]: Toolchain (without parser) took 19748.61 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 48.2 MB in the beginning and 57.8 MB in the end (delta: -9.6 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:26,821 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 67.1 MB. Free memory is still 50.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:31:26,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 398.28 ms. Allocated memory is still 67.1 MB. Free memory was 48.1 MB in the beginning and 49.0 MB in the end (delta: -951.4 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:26,822 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.07 ms. Allocated memory is still 67.1 MB. Free memory was 48.8 MB in the beginning and 46.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:26,822 INFO L168 Benchmark]: Boogie Preprocessor took 66.85 ms. Allocated memory is still 67.1 MB. Free memory was 46.9 MB in the beginning and 44.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:26,826 INFO L168 Benchmark]: RCFGBuilder took 5885.96 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 44.9 MB in the beginning and 56.3 MB in the end (delta: -11.4 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:26,826 INFO L168 Benchmark]: TraceAbstraction took 13223.25 ms. Allocated memory is still 88.1 MB. Free memory was 55.9 MB in the beginning and 62.0 MB in the end (delta: -6.0 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:26,827 INFO L168 Benchmark]: Witness Printer took 94.15 ms. Allocated memory is still 88.1 MB. Free memory was 62.0 MB in the beginning and 57.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:26,830 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 67.1 MB. Free memory is still 50.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 398.28 ms. Allocated memory is still 67.1 MB. Free memory was 48.1 MB in the beginning and 49.0 MB in the end (delta: -951.4 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.07 ms. Allocated memory is still 67.1 MB. Free memory was 48.8 MB in the beginning and 46.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.85 ms. Allocated memory is still 67.1 MB. Free memory was 46.9 MB in the beginning and 44.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5885.96 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 44.9 MB in the beginning and 56.3 MB in the end (delta: -11.4 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13223.25 ms. Allocated memory is still 88.1 MB. Free memory was 55.9 MB in the beginning and 62.0 MB in the end (delta: -6.0 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. * Witness Printer took 94.15 ms. Allocated memory is still 88.1 MB. Free memory was 62.0 MB in the beginning and 57.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 156]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 71]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ~Pluszero~LONGDOUBLE() == \result && x == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 143]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 131]: Loop Invariant [2020-12-03 12:31:26,839 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-03 12:31:26,840 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-03 12:31:26,840 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-03 12:31:26,840 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-03 12:31:26,841 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-03 12:31:26,841 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-03 12:31:26,841 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-03 12:31:26,841 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] Derived loop invariant: (((((~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == res) && (\exists v_skolemized_q#valueAsBitvector_6 : bv64 :: msw == v_skolemized_q#valueAsBitvector_6[63:32] && ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_6[63:63], v_skolemized_q#valueAsBitvector_6[62:52], v_skolemized_q#valueAsBitvector_6[51:0]) == ~Pluszero~LONGDOUBLE())) && \result == 0bv32) && x == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 122]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ~bvadd64(sign, 2147483648bv32) == 0bv32 && x == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 134]: Loop Invariant Derived loop invariant: (((~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.7s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 489 SDtfs, 424 SDslu, 825 SDs, 0 SdLazy, 220 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 573 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=8, 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, 9 MinimizatonAttempts, 27 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 68 HoareAnnotationTreeSize, 10 FomulaSimplifications, 143 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 380 NumberOfCodeBlocks, 364 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 558 ConstructedInterpolants, 16 QuantifiedInterpolants, 43692 SizeOfPredicates, 35 NumberOfNonLiveVariables, 1098 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 18 InterpolantComputations, 8 PerfectInterpolantSequences, 45/97 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 correct! Received shutdown request...