./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.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_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/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 341305be8cf30067c8ef09b4a168f6c17078b23f ................................................................................................................................................................................................................................................................................................... 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_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/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 341305be8cf30067c8ef09b4a168f6c17078b23f ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:05:06,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:06,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:06,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:06,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:06,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:06,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:06,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:06,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:06,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:06,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:06,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:06,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:06,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:06,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:06,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:06,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:06,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:06,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:06,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:06,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:06,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:06,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:06,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:06,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:06,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:06,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:06,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:06,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:06,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:06,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:06,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:06,777 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:06,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:06,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:06,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:06,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:06,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:06,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:06,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:06,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:06,785 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:05:06,824 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:06,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:06,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:06,826 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:06,827 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:06,827 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:06,827 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:05:06,827 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:06,828 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:06,828 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:05:06,829 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:05:06,829 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:06,830 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:05:06,830 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:05:06,830 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:05:06,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:06,832 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:05:06,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:05:06,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:05:06,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:06,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:05:06,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:06,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:05:06,834 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:05:06,834 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:05:06,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:05:06,835 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:06,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:05:06,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:06,837 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:06,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:06,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:06,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:06,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:06,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:05:06,839 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:05:06,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:05:06,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:05:06,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:06,840 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:06,840 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_d4f1f465-4a87-49f4-ac76-73fb2a850f89/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 341305be8cf30067c8ef09b4a168f6c17078b23f [2020-11-22 13:05:07,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:07,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:07,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:07,107 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:07,118 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:07,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-11-22 13:05:07,186 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan/data/0d3d6d8dd/54e5be85f6d44de395e4b1518a786adb/FLAGf6dc9685a [2020-11-22 13:05:07,644 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:07,645 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-11-22 13:05:07,650 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan/data/0d3d6d8dd/54e5be85f6d44de395e4b1518a786adb/FLAGf6dc9685a [2020-11-22 13:05:07,665 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan/data/0d3d6d8dd/54e5be85f6d44de395e4b1518a786adb [2020-11-22 13:05:07,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:07,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:07,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:07,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:07,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:07,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:07" (1/1) ... [2020-11-22 13:05:07,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28fd0f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07, skipping insertion in model container [2020-11-22 13:05:07,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:07" (1/1) ... [2020-11-22 13:05:07,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:07,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:07,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:07,917 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:05:07,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:07,950 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:05:07,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07 WrapperNode [2020-11-22 13:05:07,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:07,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:07,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:05:07,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:05:07,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07" (1/1) ... [2020-11-22 13:05:07,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07" (1/1) ... [2020-11-22 13:05:07,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:07,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:05:07,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:05:07,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:05:07,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07" (1/1) ... [2020-11-22 13:05:07,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07" (1/1) ... [2020-11-22 13:05:08,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07" (1/1) ... [2020-11-22 13:05:08,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07" (1/1) ... [2020-11-22 13:05:08,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07" (1/1) ... [2020-11-22 13:05:08,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07" (1/1) ... [2020-11-22 13:05:08,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07" (1/1) ... [2020-11-22 13:05:08,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:05:08,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:05:08,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:05:08,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:05:08,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/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 [2020-11-22 13:05:08,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:05:08,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:05:08,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-22 13:05:08,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 13:05:08,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-22 13:05:08,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:05:08,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:05:08,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 13:05:08,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:05:08,527 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:08,528 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-22 13:05:08,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:08 BoogieIcfgContainer [2020-11-22 13:05:08,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:08,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:08,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:08,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:08,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:05:07" (1/3) ... [2020-11-22 13:05:08,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b56811e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:08, skipping insertion in model container [2020-11-22 13:05:08,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07" (2/3) ... [2020-11-22 13:05:08,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b56811e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:08, skipping insertion in model container [2020-11-22 13:05:08,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:08" (3/3) ... [2020-11-22 13:05:08,536 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2020-11-22 13:05:08,546 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:08,550 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:05:08,561 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:05:08,583 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:08,583 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:05:08,583 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:08,583 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:08,583 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:08,584 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:08,584 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:08,584 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:08,612 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-22 13:05:08,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:05:08,617 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:08,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:08,618 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:08,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:08,623 INFO L82 PathProgramCache]: Analyzing trace with hash -7391648, now seen corresponding path program 1 times [2020-11-22 13:05:08,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:08,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993612043] [2020-11-22 13:05:08,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:08,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:08,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993612043] [2020-11-22 13:05:08,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:08,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:08,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098948375] [2020-11-22 13:05:08,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:05:08,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:08,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:05:08,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:05:08,772 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-22 13:05:08,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:08,788 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-11-22 13:05:08,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:05:08,790 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-22 13:05:08,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:08,797 INFO L225 Difference]: With dead ends: 35 [2020-11-22 13:05:08,798 INFO L226 Difference]: Without dead ends: 16 [2020-11-22 13:05:08,800 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 [2020-11-22 13:05:08,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-22 13:05:08,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-22 13:05:08,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-22 13:05:08,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-11-22 13:05:08,831 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 8 [2020-11-22 13:05:08,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:08,832 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-11-22 13:05:08,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:05:08,832 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-11-22 13:05:08,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 13:05:08,833 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:08,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:08,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:05:08,834 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:08,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:08,835 INFO L82 PathProgramCache]: Analyzing trace with hash -663326809, now seen corresponding path program 1 times [2020-11-22 13:05:08,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:08,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123660113] [2020-11-22 13:05:08,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:05:08,937 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:05:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:05:09,007 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:05:09,028 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:05:09,028 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:05:09,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:05:09,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:05:09 BoogieIcfgContainer [2020-11-22 13:05:09,057 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:05:09,058 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:05:09,059 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:05:09,059 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:05:09,060 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:08" (3/4) ... [2020-11-22 13:05:09,063 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:05:09,064 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:05:09,068 INFO L168 Benchmark]: Toolchain (without parser) took 1395.73 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 74.0 MB in the beginning and 90.2 MB in the end (delta: -16.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:09,069 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory is still 55.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:09,070 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.09 ms. Allocated memory is still 100.7 MB. Free memory was 73.8 MB in the beginning and 72.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:09,072 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.24 ms. Allocated memory is still 100.7 MB. Free memory was 72.5 MB in the beginning and 70.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:09,073 INFO L168 Benchmark]: Boogie Preprocessor took 48.95 ms. Allocated memory is still 100.7 MB. Free memory was 70.8 MB in the beginning and 69.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:09,074 INFO L168 Benchmark]: RCFGBuilder took 492.31 ms. Allocated memory is still 100.7 MB. Free memory was 69.5 MB in the beginning and 51.0 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:09,075 INFO L168 Benchmark]: TraceAbstraction took 527.09 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 50.6 MB in the beginning and 91.0 MB in the end (delta: -40.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:09,075 INFO L168 Benchmark]: Witness Printer took 5.35 ms. Allocated memory is still 130.0 MB. Free memory was 90.9 MB in the beginning and 90.2 MB in the end (delta: 662.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:09,087 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory is still 55.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.09 ms. Allocated memory is still 100.7 MB. Free memory was 73.8 MB in the beginning and 72.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.24 ms. Allocated memory is still 100.7 MB. Free memory was 72.5 MB in the beginning and 70.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.95 ms. Allocated memory is still 100.7 MB. Free memory was 70.8 MB in the beginning and 69.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 492.31 ms. Allocated memory is still 100.7 MB. Free memory was 69.5 MB in the beginning and 51.0 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 527.09 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 50.6 MB in the beginning and 91.0 MB in the end (delta: -40.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.35 ms. Allocated memory is still 130.0 MB. Free memory was 90.9 MB in the beginning and 90.2 MB in the end (delta: 662.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 46, overapproximation of someBinaryArithmeticFLOAToperation at line 40, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L15] __int32_t signbit, w, exponent_less_127; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L21] signbit = w & 0x80000000 [L22] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 [L23] COND FALSE !(exponent_less_127 < 23) [L39] COND TRUE exponent_less_127 == 255 [L40] return x + x; [L55] float res = trunc_float(x); [L46] return x != x; [L58] COND TRUE !isnan_float(res) [L4] __assert_fail("0", "float_req_bl_1071.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 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=18occurred 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, 0.1s 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 [2020-11-22 13:05:11,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:11,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:11,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:11,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:11,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:11,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:11,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:11,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:11,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:11,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:11,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:11,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:11,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:11,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:11,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:11,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:11,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:11,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:11,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:11,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:11,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:11,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:11,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:11,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:11,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:11,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:11,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:11,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:11,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:11,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:11,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:11,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:11,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:11,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:11,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:11,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:11,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:11,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:11,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:11,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:11,685 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 13:05:11,728 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:11,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:11,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:11,735 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:11,735 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:11,735 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:11,735 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:11,735 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:11,736 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:11,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:11,738 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:05:11,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:05:11,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:11,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:05:11,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:11,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:05:11,740 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:05:11,740 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:05:11,740 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:05:11,740 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:05:11,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:05:11,741 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:11,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:05:11,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:11,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:05:11,742 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:11,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:11,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:11,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:11,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:11,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:05:11,743 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:05:11,743 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:05:11,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:05:11,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:11,744 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:11,744 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_d4f1f465-4a87-49f4-ac76-73fb2a850f89/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 341305be8cf30067c8ef09b4a168f6c17078b23f [2020-11-22 13:05:12,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:12,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:12,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:12,185 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:12,190 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:12,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-11-22 13:05:12,255 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan/data/d6b5d7d78/c21e6083473048a1bd169df5fb165ae1/FLAG46faf14cf [2020-11-22 13:05:12,802 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:12,803 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-11-22 13:05:12,809 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan/data/d6b5d7d78/c21e6083473048a1bd169df5fb165ae1/FLAG46faf14cf [2020-11-22 13:05:13,152 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan/data/d6b5d7d78/c21e6083473048a1bd169df5fb165ae1 [2020-11-22 13:05:13,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:13,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:13,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:13,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:13,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:13,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:13" (1/1) ... [2020-11-22 13:05:13,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e29189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:13, skipping insertion in model container [2020-11-22 13:05:13,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:13" (1/1) ... [2020-11-22 13:05:13,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:13,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:13,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:13,357 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:05:13,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:13,396 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:05:13,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:13 WrapperNode [2020-11-22 13:05:13,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:13,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:13,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:05:13,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:05:13,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:13" (1/1) ... [2020-11-22 13:05:13,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:13" (1/1) ... [2020-11-22 13:05:13,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:13,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:05:13,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:05:13,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:05:13,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:13" (1/1) ... [2020-11-22 13:05:13,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:13" (1/1) ... [2020-11-22 13:05:13,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:13" (1/1) ... [2020-11-22 13:05:13,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:13" (1/1) ... [2020-11-22 13:05:13,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:13" (1/1) ... [2020-11-22 13:05:13,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:13" (1/1) ... [2020-11-22 13:05:13,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:13" (1/1) ... [2020-11-22 13:05:13,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:05:13,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:05:13,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:05:13,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:05:13,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/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 [2020-11-22 13:05:13,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:05:13,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:05:13,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-22 13:05:13,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-22 13:05:13,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:05:13,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:05:13,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-22 13:05:13,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-22 13:05:13,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:05:14,124 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:14,126 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-22 13:05:14,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:14 BoogieIcfgContainer [2020-11-22 13:05:14,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:14,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:14,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:14,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:14,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:05:13" (1/3) ... [2020-11-22 13:05:14,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db95c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:14, skipping insertion in model container [2020-11-22 13:05:14,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:13" (2/3) ... [2020-11-22 13:05:14,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db95c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:14, skipping insertion in model container [2020-11-22 13:05:14,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:14" (3/3) ... [2020-11-22 13:05:14,139 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2020-11-22 13:05:14,149 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:14,153 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:05:14,170 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:05:14,205 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:14,205 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:05:14,206 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:14,206 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:14,206 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:14,206 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:14,206 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:14,206 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:14,220 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-22 13:05:14,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 13:05:14,226 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:14,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:14,227 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:14,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:14,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1945097259, now seen corresponding path program 1 times [2020-11-22 13:05:14,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:14,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108160717] [2020-11-22 13:05:14,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/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 [2020-11-22 13:05:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:14,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 13:05:14,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:14,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:14,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:14,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:14,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108160717] [2020-11-22 13:05:14,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:14,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:05:14,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920602416] [2020-11-22 13:05:14,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:05:14,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:14,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:05:14,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:05:14,465 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-11-22 13:05:14,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:14,480 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-11-22 13:05:14,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:05:14,482 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-22 13:05:14,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:14,497 INFO L225 Difference]: With dead ends: 41 [2020-11-22 13:05:14,497 INFO L226 Difference]: Without dead ends: 18 [2020-11-22 13:05:14,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:05:14,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-22 13:05:14,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-22 13:05:14,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-22 13:05:14,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-22 13:05:14,529 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2020-11-22 13:05:14,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:14,529 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-22 13:05:14,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:05:14,529 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-22 13:05:14,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 13:05:14,530 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:14,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:14,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:05:14,747 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:14,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:14,748 INFO L82 PathProgramCache]: Analyzing trace with hash -390209938, now seen corresponding path program 1 times [2020-11-22 13:05:14,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:14,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255334704] [2020-11-22 13:05:14,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/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 [2020-11-22 13:05:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:14,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:05:14,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:14,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:14,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:15,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:15,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255334704] [2020-11-22 13:05:15,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:15,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2020-11-22 13:05:15,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840345836] [2020-11-22 13:05:15,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:05:15,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:15,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:05:15,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:15,036 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2020-11-22 13:05:15,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:15,102 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-11-22 13:05:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:05:15,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-22 13:05:15,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:15,104 INFO L225 Difference]: With dead ends: 29 [2020-11-22 13:05:15,104 INFO L226 Difference]: Without dead ends: 24 [2020-11-22 13:05:15,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:15,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-22 13:05:15,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2020-11-22 13:05:15,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-22 13:05:15,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-11-22 13:05:15,109 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 11 [2020-11-22 13:05:15,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:15,110 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-11-22 13:05:15,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:05:15,110 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-11-22 13:05:15,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 13:05:15,110 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:15,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:15,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:05:15,328 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:15,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:15,328 INFO L82 PathProgramCache]: Analyzing trace with hash 843742638, now seen corresponding path program 1 times [2020-11-22 13:05:15,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:15,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100273944] [2020-11-22 13:05:15,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/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 [2020-11-22 13:05:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:15,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-22 13:05:15,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:15,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:15,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100273944] [2020-11-22 13:05:15,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:15,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-22 13:05:15,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640891304] [2020-11-22 13:05:15,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 13:05:15,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:15,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 13:05:15,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:05:15,648 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 10 states. [2020-11-22 13:05:15,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:15,999 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-11-22 13:05:16,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:05:16,002 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-11-22 13:05:16,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:16,003 INFO L225 Difference]: With dead ends: 24 [2020-11-22 13:05:16,003 INFO L226 Difference]: Without dead ends: 17 [2020-11-22 13:05:16,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-22 13:05:16,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-22 13:05:16,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-22 13:05:16,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-22 13:05:16,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-22 13:05:16,010 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 12 [2020-11-22 13:05:16,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:16,010 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-22 13:05:16,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 13:05:16,010 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-22 13:05:16,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 13:05:16,011 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:16,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:16,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:05:16,212 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:16,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:16,212 INFO L82 PathProgramCache]: Analyzing trace with hash -2105231138, now seen corresponding path program 1 times [2020-11-22 13:05:16,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:16,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686835357] [2020-11-22 13:05:16,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/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 [2020-11-22 13:05:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:16,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-22 13:05:16,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:16,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:16,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:16,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686835357] [2020-11-22 13:05:16,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:16,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-22 13:05:16,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640718952] [2020-11-22 13:05:16,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 13:05:16,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:16,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 13:05:16,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:05:16,570 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 8 states. [2020-11-22 13:05:16,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:16,702 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-11-22 13:05:16,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:05:16,702 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-11-22 13:05:16,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:16,702 INFO L225 Difference]: With dead ends: 17 [2020-11-22 13:05:16,702 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:05:16,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:05:16,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:05:16,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:05:16,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:05:16,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:05:16,704 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-11-22 13:05:16,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:16,704 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:05:16,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 13:05:16,704 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:05:16,704 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:05:16,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 13:05:16,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:05:17,029 INFO L274 CegarLoopResult]: For program point L23(lines 23 41) no Hoare annotation was computed. [2020-11-22 13:05:17,030 INFO L274 CegarLoopResult]: For program point L23-1(lines 23 41) no Hoare annotation was computed. [2020-11-22 13:05:17,030 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-22 13:05:17,030 INFO L274 CegarLoopResult]: For program point L32-1(lines 32 36) no Hoare annotation was computed. [2020-11-22 13:05:17,030 INFO L270 CegarLoopResult]: At program point L32-2(lines 32 36) the Hoare annotation is: false [2020-11-22 13:05:17,030 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:05:17,030 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-22 13:05:17,031 INFO L274 CegarLoopResult]: For program point L24(lines 24 37) no Hoare annotation was computed. [2020-11-22 13:05:17,031 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 13:05:17,031 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2020-11-22 13:05:17,031 INFO L270 CegarLoopResult]: At program point L16-2(lines 16 20) the Hoare annotation is: (not (fp.eq ULTIMATE.start_trunc_float_~x ULTIMATE.start_trunc_float_~x)) [2020-11-22 13:05:17,031 INFO L274 CegarLoopResult]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2020-11-22 13:05:17,031 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-22 13:05:17,031 INFO L274 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-11-22 13:05:17,031 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:05:17,032 INFO L274 CegarLoopResult]: For program point L58(lines 58 61) no Hoare annotation was computed. [2020-11-22 13:05:17,032 INFO L270 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (and (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_trunc_float_~exponent_less_127~0)) (not (fp.eq ULTIMATE.start_trunc_float_~x ULTIMATE.start_trunc_float_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq |ULTIMATE.start_trunc_float_#res| |ULTIMATE.start_trunc_float_#res|))) [2020-11-22 13:05:17,032 INFO L270 CegarLoopResult]: At program point L42(lines 14 43) the Hoare annotation is: (and (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_trunc_float_~exponent_less_127~0)) (not (fp.eq ULTIMATE.start_trunc_float_~x ULTIMATE.start_trunc_float_~x)) (not (fp.eq |ULTIMATE.start_trunc_float_#res| |ULTIMATE.start_trunc_float_#res|))) [2020-11-22 13:05:17,032 INFO L277 CegarLoopResult]: At program point L63(lines 48 64) the Hoare annotation is: true [2020-11-22 13:05:17,032 INFO L274 CegarLoopResult]: For program point L26-1(lines 26 30) no Hoare annotation was computed. [2020-11-22 13:05:17,032 INFO L270 CegarLoopResult]: At program point L26-2(lines 26 30) the Hoare annotation is: false [2020-11-22 13:05:17,032 INFO L274 CegarLoopResult]: For program point L39(lines 39 40) no Hoare annotation was computed. [2020-11-22 13:05:17,039 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-11-22 13:05:17,044 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-11-22 13:05:17,046 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-11-22 13:05:17,046 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-11-22 13:05:17,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:05:17 BoogieIcfgContainer [2020-11-22 13:05:17,049 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:05:17,049 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:05:17,050 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:05:17,050 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:05:17,050 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:14" (3/4) ... [2020-11-22 13:05:17,055 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:05:17,067 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-22 13:05:17,068 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-22 13:05:17,068 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 13:05:17,068 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:05:17,095 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(\result, \result) [2020-11-22 13:05:17,096 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(\result, \result) [2020-11-22 13:05:17,122 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d4f1f465-4a87-49f4-ac76-73fb2a850f89/bin/utaipan/witness.graphml [2020-11-22 13:05:17,127 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:05:17,129 INFO L168 Benchmark]: Toolchain (without parser) took 3971.53 ms. Allocated memory was 52.4 MB in the beginning and 81.8 MB in the end (delta: 29.4 MB). Free memory was 30.3 MB in the beginning and 26.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:17,129 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 52.4 MB. Free memory was 35.4 MB in the beginning and 35.3 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:17,130 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.04 ms. Allocated memory is still 52.4 MB. Free memory was 30.1 MB in the beginning and 33.3 MB in the end (delta: -3.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:17,131 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.86 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 33.2 MB in the beginning and 50.5 MB in the end (delta: -17.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:17,134 INFO L168 Benchmark]: Boogie Preprocessor took 32.33 ms. Allocated memory is still 67.1 MB. Free memory was 50.5 MB in the beginning and 48.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:17,135 INFO L168 Benchmark]: RCFGBuilder took 612.19 ms. Allocated memory is still 67.1 MB. Free memory was 48.9 MB in the beginning and 32.9 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:17,140 INFO L168 Benchmark]: TraceAbstraction took 2916.99 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 32.4 MB in the beginning and 29.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:17,147 INFO L168 Benchmark]: Witness Printer took 77.45 ms. Allocated memory is still 81.8 MB. Free memory was 29.7 MB in the beginning and 26.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:17,149 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 35.4 MB in the beginning and 35.3 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 239.04 ms. Allocated memory is still 52.4 MB. Free memory was 30.1 MB in the beginning and 33.3 MB in the end (delta: -3.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.86 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 33.2 MB in the beginning and 50.5 MB in the end (delta: -17.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.33 ms. Allocated memory is still 67.1 MB. Free memory was 50.5 MB in the beginning and 48.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 612.19 ms. Allocated memory is still 67.1 MB. Free memory was 48.9 MB in the beginning and 32.9 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2916.99 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 32.4 MB in the beginning and 29.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 77.45 ms. Allocated memory is still 81.8 MB. Free memory was 29.7 MB in the beginning and 26.9 MB in the end (delta: 2.8 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_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 48]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant [2020-11-22 13:05:17,157 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-11-22 13:05:17,158 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] Derived loop invariant: ((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant [2020-11-22 13:05:17,159 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-11-22 13:05:17,159 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] Derived loop invariant: (((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 36 SDslu, 88 SDs, 0 SdLazy, 46 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 48 HoareAnnotationTreeSize, 6 FomulaSimplifications, 32 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 86 ConstructedInterpolants, 14 QuantifiedInterpolants, 3257 SizeOfPredicates, 21 NumberOfNonLiveVariables, 190 ConjunctsInSsa, 22 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...