./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_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_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0730c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/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 7f4671d452b9485f517a75db95b3d71f26ad2045 ......................................................................................................................................................................................................................................................................................................... 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_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0730c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/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 7f4671d452b9485f517a75db95b3d71f26ad2045 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 12:17:22,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:17:22,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:17:22,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:17:22,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:17:22,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:17:22,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:17:22,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:17:22,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:17:22,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:17:22,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:17:22,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:17:22,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:17:22,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:17:22,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:17:22,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:17:22,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:17:22,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:17:22,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:17:22,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:17:22,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:17:22,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:17:22,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:17:22,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:17:22,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:17:22,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:17:22,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:17:22,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:17:22,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:17:22,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:17:22,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:17:22,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:17:22,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:17:22,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:17:22,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:17:22,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:17:22,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:17:22,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:17:22,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:17:22,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:17:22,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:17:22,811 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 12:17:22,832 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:17:22,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:17:22,833 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:17:22,833 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:17:22,834 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:17:22,834 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:17:22,834 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 12:17:22,834 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:17:22,834 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:17:22,834 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 12:17:22,834 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 12:17:22,834 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:17:22,835 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 12:17:22,835 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 12:17:22,835 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 12:17:22,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:17:22,835 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 12:17:22,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 12:17:22,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 12:17:22,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:17:22,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 12:17:22,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:17:22,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 12:17:22,836 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:17:22,836 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 12:17:22,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 12:17:22,837 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:17:22,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 12:17:22,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:17:22,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:17:22,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:17:22,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:17:22,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:17:22,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 12:17:22,838 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 12:17:22,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 12:17:22,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 12:17:22,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:17:22,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:17:22,838 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_281b79a5-4fec-4a33-8627-9b75e42ce98f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f4671d452b9485f517a75db95b3d71f26ad2045 [2020-12-09 12:17:23,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:17:23,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:17:23,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:17:23,025 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:17:23,026 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:17:23,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0730c.c [2020-12-09 12:17:23,067 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan/data/d0e22baa5/a9f60cba1f3145f4a1984d20a138b658/FLAG5fc5f8cb4 [2020-12-09 12:17:23,432 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:17:23,432 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/sv-benchmarks/c/float-newlib/float_req_bl_0730c.c [2020-12-09 12:17:23,437 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan/data/d0e22baa5/a9f60cba1f3145f4a1984d20a138b658/FLAG5fc5f8cb4 [2020-12-09 12:17:23,448 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan/data/d0e22baa5/a9f60cba1f3145f4a1984d20a138b658 [2020-12-09 12:17:23,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:17:23,451 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:17:23,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:17:23,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:17:23,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:17:23,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:17:23" (1/1) ... [2020-12-09 12:17:23,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66fda0f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:23, skipping insertion in model container [2020-12-09 12:17:23,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:17:23" (1/1) ... [2020-12-09 12:17:23,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:17:23,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:17:23,611 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_281b79a5-4fec-4a33-8627-9b75e42ce98f/sv-benchmarks/c/float-newlib/float_req_bl_0730c.c[2071,2084] [2020-12-09 12:17:23,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:17:23,619 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 12:17:23,639 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_281b79a5-4fec-4a33-8627-9b75e42ce98f/sv-benchmarks/c/float-newlib/float_req_bl_0730c.c[2071,2084] [2020-12-09 12:17:23,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:17:23,650 INFO L208 MainTranslator]: Completed translation [2020-12-09 12:17:23,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:23 WrapperNode [2020-12-09 12:17:23,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:17:23,651 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 12:17:23,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 12:17:23,651 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 12:17:23,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:23" (1/1) ... [2020-12-09 12:17:23,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:23" (1/1) ... [2020-12-09 12:17:23,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 12:17:23,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 12:17:23,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 12:17:23,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 12:17:23,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:23" (1/1) ... [2020-12-09 12:17:23,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:23" (1/1) ... [2020-12-09 12:17:23,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:23" (1/1) ... [2020-12-09 12:17:23,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:23" (1/1) ... [2020-12-09 12:17:23,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:23" (1/1) ... [2020-12-09 12:17:23,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:23" (1/1) ... [2020-12-09 12:17:23,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:23" (1/1) ... [2020-12-09 12:17:23,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 12:17:23,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 12:17:23,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 12:17:23,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 12:17:23,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/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 [2020-12-09 12:17:23,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 12:17:23,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 12:17:23,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-09 12:17:23,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 12:17:23,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-09 12:17:23,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 12:17:23,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 12:17:23,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 12:17:23,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 12:17:24,176 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 12:17:24,176 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-09 12:17:24,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:17:24 BoogieIcfgContainer [2020-12-09 12:17:24,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 12:17:24,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 12:17:24,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 12:17:24,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 12:17:24,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:17:23" (1/3) ... [2020-12-09 12:17:24,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1506e3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:17:24, skipping insertion in model container [2020-12-09 12:17:24,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:23" (2/3) ... [2020-12-09 12:17:24,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1506e3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:17:24, skipping insertion in model container [2020-12-09 12:17:24,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:17:24" (3/3) ... [2020-12-09 12:17:24,184 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730c.c [2020-12-09 12:17:24,196 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 12:17:24,199 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 12:17:24,206 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 12:17:24,223 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 12:17:24,223 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 12:17:24,224 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 12:17:24,224 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 12:17:24,224 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 12:17:24,224 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 12:17:24,224 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 12:17:24,224 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 12:17:24,233 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-12-09 12:17:24,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 12:17:24,236 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:17:24,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:17:24,237 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:17:24,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:17:24,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1703431191, now seen corresponding path program 1 times [2020-12-09 12:17:24,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:17:24,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908533852] [2020-12-09 12:17:24,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:17:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:17:24,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:17:24,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908533852] [2020-12-09 12:17:24,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:17:24,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:17:24,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178872400] [2020-12-09 12:17:24,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 12:17:24,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:17:24,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 12:17:24,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 12:17:24,368 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-12-09 12:17:24,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:17:24,382 INFO L93 Difference]: Finished difference Result 47 states and 73 transitions. [2020-12-09 12:17:24,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 12:17:24,384 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 12:17:24,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:17:24,392 INFO L225 Difference]: With dead ends: 47 [2020-12-09 12:17:24,392 INFO L226 Difference]: Without dead ends: 22 [2020-12-09 12:17:24,395 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 [2020-12-09 12:17:24,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-09 12:17:24,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-09 12:17:24,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-09 12:17:24,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2020-12-09 12:17:24,425 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 8 [2020-12-09 12:17:24,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:17:24,425 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-12-09 12:17:24,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 12:17:24,426 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2020-12-09 12:17:24,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 12:17:24,426 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:17:24,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:17:24,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 12:17:24,427 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:17:24,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:17:24,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1637063338, now seen corresponding path program 1 times [2020-12-09 12:17:24,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:17:24,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181682616] [2020-12-09 12:17:24,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:17:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 12:17:24,463 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 12:17:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 12:17:24,485 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 12:17:24,507 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 12:17:24,507 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 12:17:24,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 12:17:24,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:17:24 BoogieIcfgContainer [2020-12-09 12:17:24,531 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 12:17:24,531 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 12:17:24,531 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 12:17:24,532 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 12:17:24,532 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:17:24" (3/4) ... [2020-12-09 12:17:24,535 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 12:17:24,535 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 12:17:24,537 INFO L168 Benchmark]: Toolchain (without parser) took 1084.51 ms. Allocated memory is still 104.9 MB. Free memory was 81.0 MB in the beginning and 59.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. [2020-12-09 12:17:24,538 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 104.9 MB. Free memory was 70.3 MB in the beginning and 70.2 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:17:24,538 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.97 ms. Allocated memory is still 104.9 MB. Free memory was 80.7 MB in the beginning and 80.2 MB in the end (delta: 579.3 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 12:17:24,539 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.03 ms. Allocated memory is still 104.9 MB. Free memory was 80.2 MB in the beginning and 78.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:17:24,540 INFO L168 Benchmark]: Boogie Preprocessor took 21.51 ms. Allocated memory is still 104.9 MB. Free memory was 78.4 MB in the beginning and 76.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:17:24,540 INFO L168 Benchmark]: RCFGBuilder took 475.29 ms. Allocated memory is still 104.9 MB. Free memory was 76.8 MB in the beginning and 82.1 MB in the end (delta: -5.3 MB). Peak memory consumption was 40.0 MB. Max. memory is 16.1 GB. [2020-12-09 12:17:24,541 INFO L168 Benchmark]: TraceAbstraction took 352.01 ms. Allocated memory is still 104.9 MB. Free memory was 81.7 MB in the beginning and 59.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-12-09 12:17:24,541 INFO L168 Benchmark]: Witness Printer took 3.86 ms. Allocated memory is still 104.9 MB. Free memory is still 59.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:17:24,545 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 104.9 MB. Free memory was 70.3 MB in the beginning and 70.2 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 197.97 ms. Allocated memory is still 104.9 MB. Free memory was 80.7 MB in the beginning and 80.2 MB in the end (delta: 579.3 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.03 ms. Allocated memory is still 104.9 MB. Free memory was 80.2 MB in the beginning and 78.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.51 ms. Allocated memory is still 104.9 MB. Free memory was 78.4 MB in the beginning and 76.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 475.29 ms. Allocated memory is still 104.9 MB. Free memory was 76.8 MB in the beginning and 82.1 MB in the end (delta: -5.3 MB). Peak memory consumption was 40.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 352.01 ms. Allocated memory is still 104.9 MB. Free memory was 81.7 MB in the beginning and 59.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 3.86 ms. Allocated memory is still 104.9 MB. Free memory is still 59.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 108]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 107, overapproximation of bitwiseAnd at line 26, overapproximation of someUnaryFLOAToperation at line 103, overapproximation of someBinaryArithmeticFLOAToperation at line 29. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L103] float x = -0.0f; [L17] float z; [L18] __uint32_t r, hx; [L19] __int32_t ix, s, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L22] ieee_float_shape_type gf_u; [L23] gf_u.value = (x) [L24] EXPR gf_u.word [L24] (ix) = gf_u.word [L26] hx = ix & 0x7fffffff VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L28] COND TRUE !((hx) < 0x7f800000L) [L29] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L104] float res = __ieee754_sqrtf(x); [L107] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L107] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L108] reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 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=24occurred 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, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 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 [2020-12-09 12:17:26,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:17:26,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:17:26,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:17:26,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:17:26,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:17:26,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:17:26,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:17:26,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:17:26,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:17:26,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:17:26,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:17:26,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:17:26,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:17:26,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:17:26,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:17:26,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:17:26,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:17:26,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:17:26,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:17:26,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:17:26,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:17:26,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:17:26,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:17:26,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:17:26,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:17:26,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:17:26,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:17:26,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:17:26,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:17:26,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:17:26,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:17:26,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:17:26,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:17:26,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:17:26,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:17:26,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:17:26,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:17:26,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:17:26,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:17:26,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:17:26,169 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 12:17:26,186 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:17:26,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:17:26,186 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:17:26,187 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:17:26,187 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:17:26,187 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:17:26,187 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:17:26,187 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:17:26,187 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:17:26,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:17:26,188 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 12:17:26,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 12:17:26,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:17:26,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 12:17:26,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:17:26,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 12:17:26,189 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:17:26,189 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 12:17:26,189 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 12:17:26,189 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 12:17:26,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 12:17:26,189 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:17:26,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 12:17:26,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:17:26,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 12:17:26,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:17:26,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:17:26,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:17:26,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:17:26,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 12:17:26,191 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 12:17:26,191 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 12:17:26,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 12:17:26,191 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:17:26,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:17:26,191 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_281b79a5-4fec-4a33-8627-9b75e42ce98f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f4671d452b9485f517a75db95b3d71f26ad2045 [2020-12-09 12:17:26,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:17:26,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:17:26,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:17:26,444 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:17:26,444 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:17:26,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0730c.c [2020-12-09 12:17:26,487 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan/data/33bd29dd7/5ec83924a8054cee9b052278fad4c4fe/FLAG06b9b23fd [2020-12-09 12:17:26,883 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:17:26,883 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/sv-benchmarks/c/float-newlib/float_req_bl_0730c.c [2020-12-09 12:17:26,890 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan/data/33bd29dd7/5ec83924a8054cee9b052278fad4c4fe/FLAG06b9b23fd [2020-12-09 12:17:26,901 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan/data/33bd29dd7/5ec83924a8054cee9b052278fad4c4fe [2020-12-09 12:17:26,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:17:26,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:17:26,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:17:26,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:17:26,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:17:26,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:17:26" (1/1) ... [2020-12-09 12:17:26,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76a96277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:26, skipping insertion in model container [2020-12-09 12:17:26,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:17:26" (1/1) ... [2020-12-09 12:17:26,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:17:26,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:17:27,050 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_281b79a5-4fec-4a33-8627-9b75e42ce98f/sv-benchmarks/c/float-newlib/float_req_bl_0730c.c[2071,2084] [2020-12-09 12:17:27,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:17:27,062 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 12:17:27,084 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_281b79a5-4fec-4a33-8627-9b75e42ce98f/sv-benchmarks/c/float-newlib/float_req_bl_0730c.c[2071,2084] [2020-12-09 12:17:27,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:17:27,105 INFO L208 MainTranslator]: Completed translation [2020-12-09 12:17:27,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:27 WrapperNode [2020-12-09 12:17:27,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:17:27,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 12:17:27,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 12:17:27,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 12:17:27,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:27" (1/1) ... [2020-12-09 12:17:27,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:27" (1/1) ... [2020-12-09 12:17:27,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 12:17:27,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 12:17:27,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 12:17:27,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 12:17:27,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:27" (1/1) ... [2020-12-09 12:17:27,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:27" (1/1) ... [2020-12-09 12:17:27,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:27" (1/1) ... [2020-12-09 12:17:27,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:27" (1/1) ... [2020-12-09 12:17:27,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:27" (1/1) ... [2020-12-09 12:17:27,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:27" (1/1) ... [2020-12-09 12:17:27,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:27" (1/1) ... [2020-12-09 12:17:27,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 12:17:27,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 12:17:27,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 12:17:27,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 12:17:27,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/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 [2020-12-09 12:17:27,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 12:17:27,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 12:17:27,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-12-09 12:17:27,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 12:17:27,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 12:17:27,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 12:17:27,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-12-09 12:17:27,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 12:17:27,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 12:17:28,862 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 12:17:28,862 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-09 12:17:28,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:17:28 BoogieIcfgContainer [2020-12-09 12:17:28,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 12:17:28,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 12:17:28,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 12:17:28,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 12:17:28,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:17:26" (1/3) ... [2020-12-09 12:17:28,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8f23cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:17:28, skipping insertion in model container [2020-12-09 12:17:28,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:27" (2/3) ... [2020-12-09 12:17:28,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8f23cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:17:28, skipping insertion in model container [2020-12-09 12:17:28,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:17:28" (3/3) ... [2020-12-09 12:17:28,869 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730c.c [2020-12-09 12:17:28,879 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 12:17:28,882 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 12:17:28,889 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 12:17:28,908 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 12:17:28,908 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 12:17:28,908 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 12:17:28,908 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 12:17:28,908 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 12:17:28,908 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 12:17:28,908 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 12:17:28,908 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 12:17:28,917 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-12-09 12:17:28,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 12:17:28,921 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:17:28,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:17:28,921 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:17:28,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:17:28,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1903716510, now seen corresponding path program 1 times [2020-12-09 12:17:28,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:17:28,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115823473] [2020-12-09 12:17:28,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/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 [2020-12-09 12:17:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:17:29,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 12:17:29,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:17:29,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:17:29,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:17:29,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115823473] [2020-12-09 12:17:29,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:17:29,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:17:29,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515880165] [2020-12-09 12:17:29,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 12:17:29,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:17:29,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 12:17:29,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 12:17:29,108 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-12-09 12:17:29,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:17:29,121 INFO L93 Difference]: Finished difference Result 72 states and 112 transitions. [2020-12-09 12:17:29,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 12:17:29,122 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-09 12:17:29,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:17:29,128 INFO L225 Difference]: With dead ends: 72 [2020-12-09 12:17:29,129 INFO L226 Difference]: Without dead ends: 34 [2020-12-09 12:17:29,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 12:17:29,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-09 12:17:29,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-09 12:17:29,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-09 12:17:29,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2020-12-09 12:17:29,155 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 9 [2020-12-09 12:17:29,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:17:29,155 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2020-12-09 12:17:29,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 12:17:29,155 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2020-12-09 12:17:29,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 12:17:29,156 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:17:29,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:17:29,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 12:17:29,358 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:17:29,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:17:29,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1484634303, now seen corresponding path program 1 times [2020-12-09 12:17:29,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:17:29,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590027996] [2020-12-09 12:17:29,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/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 [2020-12-09 12:17:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:17:29,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 12:17:29,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:17:29,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:17:29,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:17:29,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590027996] [2020-12-09 12:17:29,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:17:29,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 12:17:29,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205501101] [2020-12-09 12:17:29,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 12:17:29,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:17:29,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 12:17:29,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:17:29,631 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand 5 states. [2020-12-09 12:17:29,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:17:29,693 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-12-09 12:17:29,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 12:17:29,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 12:17:29,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:17:29,694 INFO L225 Difference]: With dead ends: 43 [2020-12-09 12:17:29,694 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 12:17:29,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 12:17:29,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 12:17:29,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 12:17:29,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 12:17:29,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-09 12:17:29,698 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2020-12-09 12:17:29,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:17:29,698 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-09 12:17:29,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 12:17:29,698 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-09 12:17:29,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 12:17:29,699 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:17:29,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:17:29,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 12:17:29,900 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:17:29,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:17:29,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1245587968, now seen corresponding path program 1 times [2020-12-09 12:17:29,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:17:29,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452277503] [2020-12-09 12:17:29,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/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 [2020-12-09 12:17:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:17:30,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 12:17:30,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:17:30,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:17:30,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:17:30,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452277503] [2020-12-09 12:17:30,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:17:30,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 12:17:30,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943397547] [2020-12-09 12:17:30,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 12:17:30,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:17:30,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 12:17:30,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:17:30,061 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2020-12-09 12:17:30,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:17:30,121 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-12-09 12:17:30,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 12:17:30,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 12:17:30,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:17:30,122 INFO L225 Difference]: With dead ends: 19 [2020-12-09 12:17:30,122 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 12:17:30,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 12:17:30,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 12:17:30,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 12:17:30,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 12:17:30,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-12-09 12:17:30,125 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 11 [2020-12-09 12:17:30,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:17:30,125 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-12-09 12:17:30,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 12:17:30,125 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-12-09 12:17:30,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 12:17:30,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:17:30,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:17:30,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 12:17:30,327 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:17:30,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:17:30,329 INFO L82 PathProgramCache]: Analyzing trace with hash 336653141, now seen corresponding path program 1 times [2020-12-09 12:17:30,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:17:30,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426162774] [2020-12-09 12:17:30,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/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 [2020-12-09 12:17:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:17:30,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-09 12:17:30,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:17:30,559 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:17:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:17:30,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:17:30,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426162774] [2020-12-09 12:17:30,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:17:30,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 12:17:30,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055464808] [2020-12-09 12:17:30,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 12:17:30,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:17:30,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 12:17:30,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-09 12:17:30,609 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 9 states. [2020-12-09 12:17:30,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:17:30,793 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-12-09 12:17:30,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 12:17:30,794 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-12-09 12:17:30,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:17:30,794 INFO L225 Difference]: With dead ends: 16 [2020-12-09 12:17:30,794 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 12:17:30,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-09 12:17:30,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 12:17:30,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 12:17:30,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 12:17:30,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 12:17:30,795 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-09 12:17:30,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:17:30,795 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 12:17:30,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 12:17:30,795 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 12:17:30,795 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 12:17:30,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 12:17:30,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 12:17:31,152 INFO L258 CegarLoopResult]: At program point L52-2(lines 52 61) the Hoare annotation is: false [2020-12-09 12:17:31,152 INFO L262 CegarLoopResult]: For program point L52-3(lines 16 81) no Hoare annotation was computed. [2020-12-09 12:17:31,152 INFO L262 CegarLoopResult]: For program point L44(lines 44 45) no Hoare annotation was computed. [2020-12-09 12:17:31,152 INFO L262 CegarLoopResult]: For program point L44-2(lines 44 45) no Hoare annotation was computed. [2020-12-09 12:17:31,153 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 12:17:31,153 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 12:17:31,153 INFO L262 CegarLoopResult]: For program point L28(lines 28 29) no Hoare annotation was computed. [2020-12-09 12:17:31,153 INFO L262 CegarLoopResult]: For program point L86-1(lines 86 90) no Hoare annotation was computed. [2020-12-09 12:17:31,153 INFO L258 CegarLoopResult]: At program point L86-2(lines 86 90) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (exists ((ULTIMATE.start___ieee754_sqrtf_~ix~0 (_ BitVec 32))) (and (= ULTIMATE.start___ieee754_sqrtf_~hx~0 (bvand (_ bv2147483647 32) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (fp.neg (_ +zero 8 24))))) (= .cse0 ULTIMATE.start___signbit_float_~x) (= .cse0 ULTIMATE.start_main_~res~0) |ULTIMATE.start_main_#t~short13| (= ULTIMATE.start___ieee754_sqrtf_~x .cse0) (= |ULTIMATE.start___ieee754_sqrtf_#res| .cse0) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) .cse0))) [2020-12-09 12:17:31,153 INFO L262 CegarLoopResult]: For program point L86-3(lines 86 90) no Hoare annotation was computed. [2020-12-09 12:17:31,153 INFO L262 CegarLoopResult]: For program point L37(lines 37 41) no Hoare annotation was computed. [2020-12-09 12:17:31,153 INFO L262 CegarLoopResult]: For program point L37-2(lines 37 41) no Hoare annotation was computed. [2020-12-09 12:17:31,153 INFO L262 CegarLoopResult]: For program point L54(lines 54 58) no Hoare annotation was computed. [2020-12-09 12:17:31,153 INFO L262 CegarLoopResult]: For program point L21-1(lines 21 25) no Hoare annotation was computed. [2020-12-09 12:17:31,153 INFO L262 CegarLoopResult]: For program point L54-2(lines 54 58) no Hoare annotation was computed. [2020-12-09 12:17:31,154 INFO L258 CegarLoopResult]: At program point L21-2(lines 21 25) the Hoare annotation is: (= ULTIMATE.start___ieee754_sqrtf_~x (fp.neg (_ +zero 8 24))) [2020-12-09 12:17:31,154 INFO L262 CegarLoopResult]: For program point L21-3(lines 21 25) no Hoare annotation was computed. [2020-12-09 12:17:31,154 INFO L265 CegarLoopResult]: At program point L112(lines 95 113) the Hoare annotation is: true [2020-12-09 12:17:31,154 INFO L262 CegarLoopResult]: For program point L38-2(lines 38 39) no Hoare annotation was computed. [2020-12-09 12:17:31,154 INFO L258 CegarLoopResult]: At program point L38-3(lines 38 39) the Hoare annotation is: false [2020-12-09 12:17:31,154 INFO L262 CegarLoopResult]: For program point L38-4(lines 38 39) no Hoare annotation was computed. [2020-12-09 12:17:31,154 INFO L262 CegarLoopResult]: For program point L63(lines 63 72) no Hoare annotation was computed. [2020-12-09 12:17:31,154 INFO L258 CegarLoopResult]: At program point L80(lines 16 81) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (exists ((ULTIMATE.start___ieee754_sqrtf_~ix~0 (_ BitVec 32))) (and (= ULTIMATE.start___ieee754_sqrtf_~hx~0 (bvand (_ bv2147483647 32) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (fp.neg (_ +zero 8 24))))) (= ULTIMATE.start___ieee754_sqrtf_~x .cse0) (= |ULTIMATE.start___ieee754_sqrtf_#res| .cse0) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) .cse0))) [2020-12-09 12:17:31,154 INFO L262 CegarLoopResult]: For program point L31(lines 31 32) no Hoare annotation was computed. [2020-12-09 12:17:31,154 INFO L262 CegarLoopResult]: For program point L65(lines 65 71) no Hoare annotation was computed. [2020-12-09 12:17:31,154 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 12:17:31,155 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 108) no Hoare annotation was computed. [2020-12-09 12:17:31,155 INFO L262 CegarLoopResult]: For program point L107(line 107) no Hoare annotation was computed. [2020-12-09 12:17:31,155 INFO L262 CegarLoopResult]: For program point L107-2(lines 107 110) no Hoare annotation was computed. [2020-12-09 12:17:31,155 INFO L262 CegarLoopResult]: For program point L33(lines 33 34) no Hoare annotation was computed. [2020-12-09 12:17:31,155 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 12:17:31,155 INFO L262 CegarLoopResult]: For program point L108(line 108) no Hoare annotation was computed. [2020-12-09 12:17:31,155 INFO L262 CegarLoopResult]: For program point L75-1(lines 75 79) no Hoare annotation was computed. [2020-12-09 12:17:31,155 INFO L258 CegarLoopResult]: At program point L75-2(lines 75 79) the Hoare annotation is: false [2020-12-09 12:17:31,155 INFO L262 CegarLoopResult]: For program point L75-3(lines 75 79) no Hoare annotation was computed. [2020-12-09 12:17:31,155 INFO L262 CegarLoopResult]: For program point L67(lines 67 70) no Hoare annotation was computed. [2020-12-09 12:17:31,155 INFO L258 CegarLoopResult]: At program point L92(lines 83 93) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (exists ((ULTIMATE.start___ieee754_sqrtf_~ix~0 (_ BitVec 32))) (and (= ULTIMATE.start___ieee754_sqrtf_~hx~0 (bvand (_ bv2147483647 32) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (fp.neg (_ +zero 8 24))))) (= (bvadd |ULTIMATE.start___signbit_float_#res| (_ bv4294967295 32)) (_ bv0 32)) (= .cse0 ULTIMATE.start___signbit_float_~x) (= .cse0 ULTIMATE.start_main_~res~0) (= (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~0) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~0) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~0)) .cse0) |ULTIMATE.start_main_#t~short13| (= ULTIMATE.start___ieee754_sqrtf_~x .cse0) (= |ULTIMATE.start___ieee754_sqrtf_#res| .cse0) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) .cse0))) [2020-12-09 12:17:31,160 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,161 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,161 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,161 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,165 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,166 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,166 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,166 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,167 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,167 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,167 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,167 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,168 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,168 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,168 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,168 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,169 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,169 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,169 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:17:31 BoogieIcfgContainer [2020-12-09 12:17:31,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 12:17:31,172 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 12:17:31,172 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 12:17:31,172 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 12:17:31,173 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:17:28" (3/4) ... [2020-12-09 12:17:31,175 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 12:17:31,182 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-09 12:17:31,182 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-09 12:17:31,183 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 12:17:31,183 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 12:17:31,199 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\exists ULTIMATE.start___ieee754_sqrtf_~ix~0 : bv32 :: hx == ~bvand32(2147483647bv32, ULTIMATE.start___ieee754_sqrtf_~ix~0) && ~fp~LONGDOUBLE(ULTIMATE.start___ieee754_sqrtf_~ix~0[31:31], ULTIMATE.start___ieee754_sqrtf_~ix~0[30:23], ULTIMATE.start___ieee754_sqrtf_~ix~0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2020-12-09 12:17:31,200 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\exists ULTIMATE.start___ieee754_sqrtf_~ix~0 : bv32 :: hx == ~bvand32(2147483647bv32, ULTIMATE.start___ieee754_sqrtf_~ix~0) && ~fp~LONGDOUBLE(ULTIMATE.start___ieee754_sqrtf_~ix~0[31:31], ULTIMATE.start___ieee754_sqrtf_~ix~0[30:23], ULTIMATE.start___ieee754_sqrtf_~ix~0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2020-12-09 12:17:31,200 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((\exists ULTIMATE.start___ieee754_sqrtf_~ix~0 : bv32 :: hx == ~bvand32(2147483647bv32, ULTIMATE.start___ieee754_sqrtf_~ix~0) && ~fp~LONGDOUBLE(ULTIMATE.start___ieee754_sqrtf_~ix~0[31:31], ULTIMATE.start___ieee754_sqrtf_~ix~0[30:23], ULTIMATE.start___ieee754_sqrtf_~ix~0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~bvadd64(\result, 4294967295bv32) == 0bv32) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2020-12-09 12:17:31,219 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_281b79a5-4fec-4a33-8627-9b75e42ce98f/bin/utaipan/witness.graphml [2020-12-09 12:17:31,219 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 12:17:31,220 INFO L168 Benchmark]: Toolchain (without parser) took 4315.42 ms. Allocated memory was 62.9 MB in the beginning and 125.8 MB in the end (delta: 62.9 MB). Free memory was 42.7 MB in the beginning and 75.9 MB in the end (delta: -33.3 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2020-12-09 12:17:31,221 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 62.9 MB. Free memory is still 45.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:17:31,221 INFO L168 Benchmark]: CACSL2BoogieTranslator took 200.59 ms. Allocated memory is still 62.9 MB. Free memory was 42.5 MB in the beginning and 47.3 MB in the end (delta: -4.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-09 12:17:31,221 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.28 ms. Allocated memory is still 62.9 MB. Free memory was 47.3 MB in the beginning and 45.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:17:31,222 INFO L168 Benchmark]: Boogie Preprocessor took 26.59 ms. Allocated memory is still 62.9 MB. Free memory was 45.5 MB in the beginning and 43.7 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:17:31,222 INFO L168 Benchmark]: RCFGBuilder took 1694.41 ms. Allocated memory was 62.9 MB in the beginning and 125.8 MB in the end (delta: 62.9 MB). Free memory was 43.7 MB in the beginning and 103.1 MB in the end (delta: -59.4 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2020-12-09 12:17:31,222 INFO L168 Benchmark]: TraceAbstraction took 2306.84 ms. Allocated memory is still 125.8 MB. Free memory was 102.6 MB in the beginning and 79.2 MB in the end (delta: 23.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. [2020-12-09 12:17:31,223 INFO L168 Benchmark]: Witness Printer took 47.16 ms. Allocated memory is still 125.8 MB. Free memory was 79.2 MB in the beginning and 75.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 12:17:31,224 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 62.9 MB. Free memory is still 45.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 200.59 ms. Allocated memory is still 62.9 MB. Free memory was 42.5 MB in the beginning and 47.3 MB in the end (delta: -4.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.28 ms. Allocated memory is still 62.9 MB. Free memory was 47.3 MB in the beginning and 45.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.59 ms. Allocated memory is still 62.9 MB. Free memory was 45.5 MB in the beginning and 43.7 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1694.41 ms. Allocated memory was 62.9 MB in the beginning and 125.8 MB in the end (delta: 62.9 MB). Free memory was 43.7 MB in the beginning and 103.1 MB in the end (delta: -59.4 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2306.84 ms. Allocated memory is still 125.8 MB. Free memory was 102.6 MB in the beginning and 79.2 MB in the end (delta: 23.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. * Witness Printer took 47.16 ms. Allocated memory is still 125.8 MB. Free memory was 79.2 MB in the beginning and 75.9 MB in the end (delta: 3.2 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[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 108]: 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: 16]: Loop Invariant [2020-12-09 12:17:31,229 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,229 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,229 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,229 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,230 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,230 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,230 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,230 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] Derived loop invariant: (((\exists ULTIMATE.start___ieee754_sqrtf_~ix~0 : bv32 :: hx == ~bvand32(2147483647bv32, ULTIMATE.start___ieee754_sqrtf_~ix~0) && ~fp~LONGDOUBLE(ULTIMATE.start___ieee754_sqrtf_~ix~0[31:31], ULTIMATE.start___ieee754_sqrtf_~ix~0[30:23], ULTIMATE.start___ieee754_sqrtf_~ix~0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 95]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 83]: Loop Invariant [2020-12-09 12:17:31,230 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,231 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,231 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,231 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,231 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,231 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,231 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,232 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] Derived loop invariant: ((((((((\exists ULTIMATE.start___ieee754_sqrtf_~ix~0 : bv32 :: hx == ~bvand32(2147483647bv32, ULTIMATE.start___ieee754_sqrtf_~ix~0) && ~fp~LONGDOUBLE(ULTIMATE.start___ieee754_sqrtf_~ix~0[31:31], ULTIMATE.start___ieee754_sqrtf_~ix~0[30:23], ULTIMATE.start___ieee754_sqrtf_~ix~0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~bvadd64(\result, 4294967295bv32) == 0bv32) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 75]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 86]: Loop Invariant [2020-12-09 12:17:31,233 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,233 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,233 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,233 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,233 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,234 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,234 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-12-09 12:17:31,234 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] Derived loop invariant: ((((((\exists ULTIMATE.start___ieee754_sqrtf_~ix~0 : bv32 :: hx == ~bvand32(2147483647bv32, ULTIMATE.start___ieee754_sqrtf_~ix~0) && ~fp~LONGDOUBLE(ULTIMATE.start___ieee754_sqrtf_~ix~0[31:31], ULTIMATE.start___ieee754_sqrtf_~ix~0[30:23], ULTIMATE.start___ieee754_sqrtf_~ix~0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 81 SDslu, 43 SDs, 0 SdLazy, 45 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 13 NumberOfFragments, 149 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 41 ConstructedInterpolants, 1 QuantifiedInterpolants, 1598 SizeOfPredicates, 22 NumberOfNonLiveVariables, 184 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...