./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0730c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/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_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0730c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/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-a4ecdab [2020-11-28 07:42:01,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:42:01,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:42:01,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:42:01,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:42:01,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:42:01,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:42:01,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:42:01,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:42:01,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:42:01,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:42:01,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:42:01,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:42:01,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:42:01,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:42:01,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:42:01,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:42:01,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:42:01,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:42:01,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:42:01,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:42:01,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:42:01,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:42:01,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:42:01,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:42:01,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:42:01,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:42:01,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:42:01,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:42:01,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:42:01,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:42:01,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:42:01,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:42:01,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:42:01,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:42:01,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:42:01,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:42:01,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:42:01,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:42:01,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:42:01,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:42:01,116 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:42:01,144 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:42:01,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:42:01,146 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:42:01,146 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:42:01,147 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:42:01,147 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:42:01,147 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:42:01,148 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:42:01,148 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:42:01,148 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:42:01,149 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:42:01,149 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:42:01,149 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:42:01,150 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:42:01,150 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:42:01,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:42:01,151 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:42:01,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:42:01,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:42:01,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:42:01,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:42:01,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:42:01,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:42:01,154 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:42:01,154 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:42:01,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:42:01,155 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:42:01,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:42:01,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:42:01,156 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:42:01,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:42:01,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:01,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:42:01,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:42:01,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:42:01,158 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:42:01,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:42:01,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:42:01,159 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:42:01,159 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:42:01,160 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_5c36d5e6-af5e-4b38-bf29-8cfea0469564/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f4671d452b9485f517a75db95b3d71f26ad2045 [2020-11-28 07:42:01,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:42:01,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:42:01,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:42:01,457 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:42:01,458 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:42:01,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0730c.c [2020-11-28 07:42:01,546 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan/data/36e83c7b8/08cd6b4e8dec4d17a69aae8709f2ae1b/FLAG4777f164c [2020-11-28 07:42:02,015 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:42:02,016 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/sv-benchmarks/c/float-newlib/float_req_bl_0730c.c [2020-11-28 07:42:02,027 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan/data/36e83c7b8/08cd6b4e8dec4d17a69aae8709f2ae1b/FLAG4777f164c [2020-11-28 07:42:02,365 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan/data/36e83c7b8/08cd6b4e8dec4d17a69aae8709f2ae1b [2020-11-28 07:42:02,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:42:02,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:42:02,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:02,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:42:02,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:42:02,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:02" (1/1) ... [2020-11-28 07:42:02,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ae1641b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:02, skipping insertion in model container [2020-11-28 07:42:02,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:02" (1/1) ... [2020-11-28 07:42:02,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:42:02,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:42:02,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:02,637 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:42:02,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:02,680 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:42:02,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:02 WrapperNode [2020-11-28 07:42:02,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:02,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:02,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:42:02,682 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:42:02,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:02" (1/1) ... [2020-11-28 07:42:02,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:02" (1/1) ... [2020-11-28 07:42:02,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:02,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:42:02,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:42:02,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:42:02,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:02" (1/1) ... [2020-11-28 07:42:02,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:02" (1/1) ... [2020-11-28 07:42:02,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:02" (1/1) ... [2020-11-28 07:42:02,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:02" (1/1) ... [2020-11-28 07:42:02,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:02" (1/1) ... [2020-11-28 07:42:02,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:02" (1/1) ... [2020-11-28 07:42:02,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:02" (1/1) ... [2020-11-28 07:42:02,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:42:02,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:42:02,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:42:02,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:42:02,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/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 [2020-11-28 07:42:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:42:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:42:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 07:42:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:42:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 07:42:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:42:02,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:42:02,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:42:02,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:42:05,669 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:42:05,669 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-28 07:42:05,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:05 BoogieIcfgContainer [2020-11-28 07:42:05,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:42:05,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:42:05,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:42:05,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:42:05,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:42:02" (1/3) ... [2020-11-28 07:42:05,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8aebb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:05, skipping insertion in model container [2020-11-28 07:42:05,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:02" (2/3) ... [2020-11-28 07:42:05,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8aebb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:05, skipping insertion in model container [2020-11-28 07:42:05,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:05" (3/3) ... [2020-11-28 07:42:05,680 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730c.c [2020-11-28 07:42:05,690 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:42:05,695 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:42:05,707 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:42:05,730 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:42:05,730 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:42:05,730 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:42:05,731 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:42:05,731 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:42:05,731 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:42:05,731 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:42:05,731 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:42:05,744 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-11-28 07:42:05,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:42:05,748 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:05,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:05,750 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:05,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:05,755 INFO L82 PathProgramCache]: Analyzing trace with hash 894084565, now seen corresponding path program 1 times [2020-11-28 07:42:05,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:05,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650084308] [2020-11-28 07:42:05,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:05,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:05,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650084308] [2020-11-28 07:42:05,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:05,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:05,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837378052] [2020-11-28 07:42:05,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:42:05,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:05,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:42:05,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:42:05,905 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-11-28 07:42:05,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:05,922 INFO L93 Difference]: Finished difference Result 47 states and 73 transitions. [2020-11-28 07:42:05,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:42:05,923 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 07:42:05,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:05,932 INFO L225 Difference]: With dead ends: 47 [2020-11-28 07:42:05,932 INFO L226 Difference]: Without dead ends: 22 [2020-11-28 07:42:05,935 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 [2020-11-28 07:42:05,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-28 07:42:05,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-28 07:42:05,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 07:42:05,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2020-11-28 07:42:05,967 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 8 [2020-11-28 07:42:05,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:05,968 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-11-28 07:42:05,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:42:05,968 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2020-11-28 07:42:05,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:42:05,969 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:05,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:05,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:42:05,970 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:05,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:05,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1977845588, now seen corresponding path program 1 times [2020-11-28 07:42:05,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:05,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480497695] [2020-11-28 07:42:05,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:42:06,009 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:42:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:42:06,036 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:42:06,057 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:42:06,058 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:42:06,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:42:06,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:42:06 BoogieIcfgContainer [2020-11-28 07:42:06,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:42:06,087 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:42:06,087 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:42:06,088 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:42:06,088 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:05" (3/4) ... [2020-11-28 07:42:06,091 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:42:06,092 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:42:06,094 INFO L168 Benchmark]: Toolchain (without parser) took 3724.24 ms. Allocated memory is still 92.3 MB. Free memory was 59.8 MB in the beginning and 45.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:06,095 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 73.4 MB. Free memory was 35.5 MB in the beginning and 35.4 MB in the end (delta: 33.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:06,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.62 ms. Allocated memory is still 92.3 MB. Free memory was 59.6 MB in the beginning and 67.8 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:06,097 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.10 ms. Allocated memory is still 92.3 MB. Free memory was 67.8 MB in the beginning and 66.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:06,097 INFO L168 Benchmark]: Boogie Preprocessor took 30.85 ms. Allocated memory is still 92.3 MB. Free memory was 66.1 MB in the beginning and 64.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:06,098 INFO L168 Benchmark]: RCFGBuilder took 2916.61 ms. Allocated memory is still 92.3 MB. Free memory was 64.4 MB in the beginning and 67.6 MB in the end (delta: -3.2 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:06,099 INFO L168 Benchmark]: TraceAbstraction took 413.86 ms. Allocated memory is still 92.3 MB. Free memory was 67.1 MB in the beginning and 45.6 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:06,099 INFO L168 Benchmark]: Witness Printer took 4.72 ms. Allocated memory is still 92.3 MB. Free memory is still 45.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:06,103 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 73.4 MB. Free memory was 35.5 MB in the beginning and 35.4 MB in the end (delta: 33.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 310.62 ms. Allocated memory is still 92.3 MB. Free memory was 59.6 MB in the beginning and 67.8 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.10 ms. Allocated memory is still 92.3 MB. Free memory was 67.8 MB in the beginning and 66.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.85 ms. Allocated memory is still 92.3 MB. Free memory was 66.1 MB in the beginning and 64.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2916.61 ms. Allocated memory is still 92.3 MB. Free memory was 64.4 MB in the beginning and 67.6 MB in the end (delta: -3.2 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 413.86 ms. Allocated memory is still 92.3 MB. Free memory was 67.1 MB in the beginning and 45.6 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.72 ms. Allocated memory is still 92.3 MB. Free memory is still 45.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() 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) [L3] __assert_fail("0", "float_req_bl_0730c.c", 3, "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: 0.3s, 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-a4ecdab [2020-11-28 07:42:08,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:42:08,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:42:08,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:42:08,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:42:08,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:42:08,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:42:08,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:42:08,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:42:08,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:42:08,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:42:08,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:42:08,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:42:08,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:42:08,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:42:08,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:42:08,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:42:08,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:42:08,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:42:08,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:42:08,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:42:08,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:42:08,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:42:08,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:42:08,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:42:08,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:42:08,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:42:08,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:42:08,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:42:08,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:42:08,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:42:08,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:42:08,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:42:08,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:42:08,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:42:08,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:42:08,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:42:08,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:42:08,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:42:08,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:42:08,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:42:08,697 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:42:08,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:42:08,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:42:08,738 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:42:08,738 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:42:08,738 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:42:08,738 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:42:08,739 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:42:08,739 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:42:08,739 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:42:08,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:42:08,741 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:42:08,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:42:08,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:42:08,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:42:08,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:42:08,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:42:08,742 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:42:08,743 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:42:08,743 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:42:08,743 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:42:08,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:42:08,743 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:42:08,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:42:08,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:42:08,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:42:08,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:42:08,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:42:08,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:08,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:42:08,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:42:08,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:42:08,745 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:42:08,745 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:42:08,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:42:08,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:42:08,746 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:42:08,746 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_5c36d5e6-af5e-4b38-bf29-8cfea0469564/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f4671d452b9485f517a75db95b3d71f26ad2045 [2020-11-28 07:42:09,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:42:09,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:42:09,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:42:09,135 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:42:09,137 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:42:09,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0730c.c [2020-11-28 07:42:09,208 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan/data/aa966653e/ccffe3d0ff5d4da599343c59dc8fbb80/FLAG232477333 [2020-11-28 07:42:09,748 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:42:09,749 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/sv-benchmarks/c/float-newlib/float_req_bl_0730c.c [2020-11-28 07:42:09,760 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan/data/aa966653e/ccffe3d0ff5d4da599343c59dc8fbb80/FLAG232477333 [2020-11-28 07:42:10,102 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan/data/aa966653e/ccffe3d0ff5d4da599343c59dc8fbb80 [2020-11-28 07:42:10,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:42:10,108 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:42:10,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:10,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:42:10,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:42:10,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:10" (1/1) ... [2020-11-28 07:42:10,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10b9118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:10, skipping insertion in model container [2020-11-28 07:42:10,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:10" (1/1) ... [2020-11-28 07:42:10,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:42:10,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:42:10,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:10,346 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:42:10,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:10,394 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:42:10,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:10 WrapperNode [2020-11-28 07:42:10,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:10,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:10,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:42:10,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:42:10,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:10" (1/1) ... [2020-11-28 07:42:10,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:10" (1/1) ... [2020-11-28 07:42:10,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:10,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:42:10,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:42:10,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:42:10,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:10" (1/1) ... [2020-11-28 07:42:10,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:10" (1/1) ... [2020-11-28 07:42:10,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:10" (1/1) ... [2020-11-28 07:42:10,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:10" (1/1) ... [2020-11-28 07:42:10,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:10" (1/1) ... [2020-11-28 07:42:10,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:10" (1/1) ... [2020-11-28 07:42:10,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:10" (1/1) ... [2020-11-28 07:42:10,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:42:10,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:42:10,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:42:10,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:42:10,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/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 [2020-11-28 07:42:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:42:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:42:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-28 07:42:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 07:42:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:42:10,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:42:10,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-28 07:42:10,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 07:42:10,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:42:11,703 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:42:11,705 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-28 07:42:11,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:11 BoogieIcfgContainer [2020-11-28 07:42:11,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:42:11,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:42:11,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:42:11,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:42:11,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:42:10" (1/3) ... [2020-11-28 07:42:11,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4248b3c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:11, skipping insertion in model container [2020-11-28 07:42:11,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:10" (2/3) ... [2020-11-28 07:42:11,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4248b3c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:11, skipping insertion in model container [2020-11-28 07:42:11,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:11" (3/3) ... [2020-11-28 07:42:11,724 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730c.c [2020-11-28 07:42:11,734 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:42:11,738 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:42:11,750 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:42:11,772 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:42:11,772 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:42:11,772 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:42:11,772 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:42:11,772 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:42:11,772 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:42:11,772 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:42:11,772 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:42:11,782 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-11-28 07:42:11,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:42:11,786 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:11,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:11,787 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:11,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:11,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1903716510, now seen corresponding path program 1 times [2020-11-28 07:42:11,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:42:11,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436645883] [2020-11-28 07:42:11,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/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 [2020-11-28 07:42:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:12,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:42:12,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:12,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:12,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:12,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436645883] [2020-11-28 07:42:12,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:12,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:42:12,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092590539] [2020-11-28 07:42:12,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:42:12,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:42:12,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:42:12,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:42:12,082 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-11-28 07:42:12,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:12,101 INFO L93 Difference]: Finished difference Result 73 states and 113 transitions. [2020-11-28 07:42:12,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:42:12,102 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-28 07:42:12,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:12,112 INFO L225 Difference]: With dead ends: 73 [2020-11-28 07:42:12,112 INFO L226 Difference]: Without dead ends: 34 [2020-11-28 07:42:12,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:42:12,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-28 07:42:12,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-28 07:42:12,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-28 07:42:12,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2020-11-28 07:42:12,149 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 9 [2020-11-28 07:42:12,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:12,150 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2020-11-28 07:42:12,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:42:12,150 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2020-11-28 07:42:12,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:42:12,151 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:12,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:12,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:42:12,366 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:12,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:12,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1484634303, now seen corresponding path program 1 times [2020-11-28 07:42:12,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:42:12,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623052146] [2020-11-28 07:42:12,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/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 [2020-11-28 07:42:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:12,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 07:42:12,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:12,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:12,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:12,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:12,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623052146] [2020-11-28 07:42:12,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:12,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-28 07:42:12,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627060744] [2020-11-28 07:42:12,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:42:12,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:42:12,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:42:12,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:42:12,822 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand 8 states. [2020-11-28 07:42:12,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:12,919 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-11-28 07:42:12,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:42:12,920 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-11-28 07:42:12,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:12,921 INFO L225 Difference]: With dead ends: 43 [2020-11-28 07:42:12,921 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 07:42:12,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:42:12,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 07:42:12,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 07:42:12,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 07:42:12,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-28 07:42:12,926 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2020-11-28 07:42:12,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:12,927 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-28 07:42:12,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:42:12,927 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-28 07:42:12,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:42:12,928 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:12,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:13,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:42:13,144 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:13,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:13,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1245587968, now seen corresponding path program 1 times [2020-11-28 07:42:13,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:42:13,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672564633] [2020-11-28 07:42:13,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/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 [2020-11-28 07:42:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:13,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:42:13,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:13,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:13,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:13,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:13,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672564633] [2020-11-28 07:42:13,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:13,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-11-28 07:42:13,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119119863] [2020-11-28 07:42:13,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:42:13,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:42:13,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:42:13,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:42:13,366 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 7 states. [2020-11-28 07:42:13,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:13,450 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-11-28 07:42:13,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:42:13,452 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-11-28 07:42:13,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:13,453 INFO L225 Difference]: With dead ends: 19 [2020-11-28 07:42:13,453 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 07:42:13,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:42:13,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 07:42:13,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 07:42:13,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 07:42:13,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-11-28 07:42:13,460 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 11 [2020-11-28 07:42:13,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:13,460 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-11-28 07:42:13,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:42:13,460 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-11-28 07:42:13,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 07:42:13,461 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:13,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:13,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:42:13,662 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:13,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:13,663 INFO L82 PathProgramCache]: Analyzing trace with hash 336653141, now seen corresponding path program 1 times [2020-11-28 07:42:13,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:42:13,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885570309] [2020-11-28 07:42:13,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/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 [2020-11-28 07:42:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:13,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 07:42:13,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:13,882 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:42:13,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:13,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:14,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:14,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885570309] [2020-11-28 07:42:14,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:14,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2020-11-28 07:42:14,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979243764] [2020-11-28 07:42:14,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-28 07:42:14,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:42:14,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-28 07:42:14,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-11-28 07:42:14,174 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 14 states. [2020-11-28 07:42:14,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:14,396 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-11-28 07:42:14,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:42:14,398 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-11-28 07:42:14,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:14,398 INFO L225 Difference]: With dead ends: 16 [2020-11-28 07:42:14,398 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:42:14,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-11-28 07:42:14,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:42:14,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:42:14,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:42:14,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:42:14,400 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-28 07:42:14,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:14,400 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:42:14,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-28 07:42:14,400 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:42:14,400 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:42:14,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 07:42:14,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:42:14,749 INFO L270 CegarLoopResult]: At program point L52-2(lines 52 61) the Hoare annotation is: false [2020-11-28 07:42:14,749 INFO L274 CegarLoopResult]: For program point L52-3(lines 16 81) no Hoare annotation was computed. [2020-11-28 07:42:14,749 INFO L274 CegarLoopResult]: For program point L44(lines 44 45) no Hoare annotation was computed. [2020-11-28 07:42:14,749 INFO L274 CegarLoopResult]: For program point L44-2(lines 44 45) no Hoare annotation was computed. [2020-11-28 07:42:14,750 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 07:42:14,750 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-28 07:42:14,750 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:42:14,750 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 07:42:14,750 INFO L274 CegarLoopResult]: For program point L28(lines 28 29) no Hoare annotation was computed. [2020-11-28 07:42:14,750 INFO L274 CegarLoopResult]: For program point L86-1(lines 86 90) no Hoare annotation was computed. [2020-11-28 07:42:14,750 INFO L270 CegarLoopResult]: At program point L86-2(lines 86 90) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and |ULTIMATE.start_main_#t~short16| (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___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))) [2020-11-28 07:42:14,750 INFO L274 CegarLoopResult]: For program point L86-3(lines 86 90) no Hoare annotation was computed. [2020-11-28 07:42:14,750 INFO L274 CegarLoopResult]: For program point L37(lines 37 41) no Hoare annotation was computed. [2020-11-28 07:42:14,751 INFO L274 CegarLoopResult]: For program point L37-2(lines 37 41) no Hoare annotation was computed. [2020-11-28 07:42:14,751 INFO L274 CegarLoopResult]: For program point L54(lines 54 58) no Hoare annotation was computed. [2020-11-28 07:42:14,751 INFO L274 CegarLoopResult]: For program point L21-1(lines 21 25) no Hoare annotation was computed. [2020-11-28 07:42:14,751 INFO L274 CegarLoopResult]: For program point L54-2(lines 54 58) no Hoare annotation was computed. [2020-11-28 07:42:14,751 INFO L270 CegarLoopResult]: At program point L21-2(lines 21 25) the Hoare annotation is: (= ULTIMATE.start___ieee754_sqrtf_~x (fp.neg (_ +zero 8 24))) [2020-11-28 07:42:14,751 INFO L274 CegarLoopResult]: For program point L21-3(lines 21 25) no Hoare annotation was computed. [2020-11-28 07:42:14,751 INFO L277 CegarLoopResult]: At program point L112(lines 95 113) the Hoare annotation is: true [2020-11-28 07:42:14,751 INFO L274 CegarLoopResult]: For program point L38-2(lines 38 39) no Hoare annotation was computed. [2020-11-28 07:42:14,751 INFO L270 CegarLoopResult]: At program point L38-3(lines 38 39) the Hoare annotation is: false [2020-11-28 07:42:14,751 INFO L274 CegarLoopResult]: For program point L38-4(lines 38 39) no Hoare annotation was computed. [2020-11-28 07:42:14,752 INFO L274 CegarLoopResult]: For program point L63(lines 63 72) no Hoare annotation was computed. [2020-11-28 07:42:14,752 INFO L270 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))) [2020-11-28 07:42:14,752 INFO L274 CegarLoopResult]: For program point L31(lines 31 32) no Hoare annotation was computed. [2020-11-28 07:42:14,752 INFO L274 CegarLoopResult]: For program point L65(lines 65 71) no Hoare annotation was computed. [2020-11-28 07:42:14,752 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 07:42:14,752 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 07:42:14,752 INFO L274 CegarLoopResult]: For program point L107(line 107) no Hoare annotation was computed. [2020-11-28 07:42:14,752 INFO L274 CegarLoopResult]: For program point L107-2(lines 107 110) no Hoare annotation was computed. [2020-11-28 07:42:14,753 INFO L274 CegarLoopResult]: For program point L33(lines 33 34) no Hoare annotation was computed. [2020-11-28 07:42:14,753 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:42:14,753 INFO L274 CegarLoopResult]: For program point L75-1(lines 75 79) no Hoare annotation was computed. [2020-11-28 07:42:14,753 INFO L270 CegarLoopResult]: At program point L75-2(lines 75 79) the Hoare annotation is: false [2020-11-28 07:42:14,753 INFO L274 CegarLoopResult]: For program point L75-3(lines 75 79) no Hoare annotation was computed. [2020-11-28 07:42:14,753 INFO L274 CegarLoopResult]: For program point L67(lines 67 70) no Hoare annotation was computed. [2020-11-28 07:42:14,753 INFO L270 CegarLoopResult]: At program point L92(lines 83 93) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and |ULTIMATE.start_main_#t~short16| (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___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))) [2020-11-28 07:42:14,760 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,761 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,761 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,762 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,768 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,769 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,769 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,769 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,770 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,771 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,771 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,771 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,772 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,772 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,773 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,773 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,774 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,774 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,775 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,775 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,776 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,776 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,776 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,776 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:42:14 BoogieIcfgContainer [2020-11-28 07:42:14,778 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:42:14,779 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:42:14,779 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:42:14,779 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:42:14,780 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:11" (3/4) ... [2020-11-28 07:42:14,783 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:42:14,793 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-28 07:42:14,794 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-28 07:42:14,794 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:42:14,795 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:42:14,819 WARN L221 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()) [2020-11-28 07:42:14,820 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((aux-res == -0.0f && __signbit_float(res) == 1-aux && (\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) && 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()) [2020-11-28 07:42:14,820 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((aux-res == -0.0f && __signbit_float(res) == 1-aux && (\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())) && 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()) [2020-11-28 07:42:14,864 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5c36d5e6-af5e-4b38-bf29-8cfea0469564/bin/utaipan/witness.graphml [2020-11-28 07:42:14,865 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:42:14,867 INFO L168 Benchmark]: Toolchain (without parser) took 4757.67 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 46.2 MB in the beginning and 49.0 MB in the end (delta: -2.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:14,867 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 52.4 MB. Free memory was 34.0 MB in the beginning and 33.9 MB in the end (delta: 36.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:14,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.37 ms. Allocated memory is still 69.2 MB. Free memory was 46.0 MB in the beginning and 34.3 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:14,868 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.87 ms. Allocated memory is still 69.2 MB. Free memory was 34.3 MB in the beginning and 51.9 MB in the end (delta: -17.6 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:14,869 INFO L168 Benchmark]: Boogie Preprocessor took 36.97 ms. Allocated memory is still 69.2 MB. Free memory was 51.9 MB in the beginning and 50.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:14,869 INFO L168 Benchmark]: RCFGBuilder took 1217.14 ms. Allocated memory is still 69.2 MB. Free memory was 50.2 MB in the beginning and 28.9 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:14,869 INFO L168 Benchmark]: TraceAbstraction took 3069.70 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 28.5 MB in the beginning and 53.2 MB in the end (delta: -24.7 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:14,870 INFO L168 Benchmark]: Witness Printer took 85.76 ms. Allocated memory is still 83.9 MB. Free memory was 52.5 MB in the beginning and 49.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:14,872 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 52.4 MB. Free memory was 34.0 MB in the beginning and 33.9 MB in the end (delta: 36.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 284.37 ms. Allocated memory is still 69.2 MB. Free memory was 46.0 MB in the beginning and 34.3 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.87 ms. Allocated memory is still 69.2 MB. Free memory was 34.3 MB in the beginning and 51.9 MB in the end (delta: -17.6 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.97 ms. Allocated memory is still 69.2 MB. Free memory was 51.9 MB in the beginning and 50.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1217.14 ms. Allocated memory is still 69.2 MB. Free memory was 50.2 MB in the beginning and 28.9 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3069.70 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 28.5 MB in the beginning and 53.2 MB in the end (delta: -24.7 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. * Witness Printer took 85.76 ms. Allocated memory is still 83.9 MB. Free memory was 52.5 MB in the beginning and 49.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 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: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant [2020-11-28 07:42:14,882 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,882 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,882 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,882 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,883 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,883 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,883 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,884 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 [2020-11-28 07:42:14,899 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,899 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,900 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,900 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,901 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,903 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,903 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,903 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] Derived loop invariant: (((((((aux-res == -0.0f && __signbit_float(res) == 1-aux && (\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())) && 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 [2020-11-28 07:42:14,905 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,905 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,907 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,908 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,908 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,908 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,909 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] [2020-11-28 07:42:14,909 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_sqrtf_~ix~0,QUANTIFIED] Derived loop invariant: (((((aux-res == -0.0f && __signbit_float(res) == 1-aux && (\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) && 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, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 101 SDslu, 56 SDs, 0 SdLazy, 51 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 0.4s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 82 ConstructedInterpolants, 10 QuantifiedInterpolants, 4553 SizeOfPredicates, 22 NumberOfNonLiveVariables, 192 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...