./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.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_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/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 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d ......................................................................................................................................................................................................................................................................................................... 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_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/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 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d ...................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:40:06,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:06,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:06,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:06,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:06,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:06,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:06,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:06,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:06,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:06,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:06,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:06,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:06,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:06,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:06,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:06,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:06,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:06,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:06,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:06,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:06,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:06,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:06,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:06,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:06,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:06,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:06,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:06,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:06,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:06,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:06,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:06,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:06,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:06,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:06,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:06,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:06,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:06,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:06,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:06,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:06,836 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:40:06,862 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:06,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:06,864 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:06,864 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:06,864 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:06,865 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:06,865 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:40:06,865 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:06,866 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:06,866 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:40:06,866 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:40:06,867 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:06,867 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:40:06,868 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:40:06,868 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:40:06,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:06,869 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:40:06,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:40:06,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:40:06,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:06,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:40:06,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:06,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:40:06,871 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:40:06,872 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:40:06,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:40:06,872 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:06,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:40:06,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:06,874 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:06,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:06,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:06,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:06,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:06,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:40:06,876 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:40:06,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:40:06,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:40:06,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:06,877 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:06,877 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_55357c1f-825d-4bc0-a124-b21f403ae709/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d [2020-11-28 07:40:07,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:07,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:07,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:07,146 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:07,147 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:07,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2020-11-28 07:40:07,226 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/data/adb2d9724/867a149b91fc427da6d4ddf957754131/FLAG399b4fb2e [2020-11-28 07:40:07,667 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:07,668 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2020-11-28 07:40:07,675 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/data/adb2d9724/867a149b91fc427da6d4ddf957754131/FLAG399b4fb2e [2020-11-28 07:40:08,045 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/data/adb2d9724/867a149b91fc427da6d4ddf957754131 [2020-11-28 07:40:08,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:08,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:08,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:08,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:08,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:08,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:08" (1/1) ... [2020-11-28 07:40:08,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72283606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08, skipping insertion in model container [2020-11-28 07:40:08,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:08" (1/1) ... [2020-11-28 07:40:08,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:08,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:08,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:08,333 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:40:08,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:08,375 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:40:08,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08 WrapperNode [2020-11-28 07:40:08,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:08,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:08,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:40:08,379 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:40:08,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08" (1/1) ... [2020-11-28 07:40:08,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08" (1/1) ... [2020-11-28 07:40:08,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:08,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:40:08,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:40:08,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:40:08,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08" (1/1) ... [2020-11-28 07:40:08,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08" (1/1) ... [2020-11-28 07:40:08,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08" (1/1) ... [2020-11-28 07:40:08,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08" (1/1) ... [2020-11-28 07:40:08,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08" (1/1) ... [2020-11-28 07:40:08,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08" (1/1) ... [2020-11-28 07:40:08,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08" (1/1) ... [2020-11-28 07:40:08,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:40:08,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:40:08,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:40:08,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:40:08,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:08,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:40:08,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:40:08,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 07:40:08,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:40:08,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 07:40:08,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:40:08,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:40:08,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:40:08,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:40:09,182 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:40:09,182 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-28 07:40:09,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:09 BoogieIcfgContainer [2020-11-28 07:40:09,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:40:09,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:40:09,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:40:09,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:40:09,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:40:08" (1/3) ... [2020-11-28 07:40:09,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a7b165e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:09, skipping insertion in model container [2020-11-28 07:40:09,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:08" (2/3) ... [2020-11-28 07:40:09,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a7b165e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:09, skipping insertion in model container [2020-11-28 07:40:09,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:09" (3/3) ... [2020-11-28 07:40:09,193 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2020-11-28 07:40:09,201 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:40:09,206 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:40:09,217 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:40:09,238 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:40:09,238 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:40:09,238 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:40:09,238 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:40:09,239 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:40:09,239 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:40:09,239 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:40:09,239 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:40:09,249 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-28 07:40:09,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:40:09,254 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:09,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:09,255 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:09,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:09,261 INFO L82 PathProgramCache]: Analyzing trace with hash 545568920, now seen corresponding path program 1 times [2020-11-28 07:40:09,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:09,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051506080] [2020-11-28 07:40:09,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:09,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:09,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051506080] [2020-11-28 07:40:09,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:09,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:40:09,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207861841] [2020-11-28 07:40:09,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:40:09,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:09,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:40:09,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:40:09,414 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-11-28 07:40:09,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:09,429 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2020-11-28 07:40:09,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:40:09,430 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-28 07:40:09,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:09,438 INFO L225 Difference]: With dead ends: 31 [2020-11-28 07:40:09,439 INFO L226 Difference]: Without dead ends: 14 [2020-11-28 07:40:09,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:40:09,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-28 07:40:09,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-28 07:40:09,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-28 07:40:09,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-28 07:40:09,472 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2020-11-28 07:40:09,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:09,472 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-28 07:40:09,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:40:09,473 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-28 07:40:09,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:40:09,473 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:09,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:09,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:40:09,474 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:09,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:09,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1884192261, now seen corresponding path program 1 times [2020-11-28 07:40:09,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:09,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490274113] [2020-11-28 07:40:09,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:40:09,559 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:40:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:40:09,601 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:40:09,624 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:40:09,624 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:40:09,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:40:09,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:40:09 BoogieIcfgContainer [2020-11-28 07:40:09,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:40:09,651 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:40:09,651 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:40:09,651 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:40:09,652 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:09" (3/4) ... [2020-11-28 07:40:09,655 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:40:09,655 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:40:09,657 INFO L168 Benchmark]: Toolchain (without parser) took 1606.68 ms. Allocated memory is still 107.0 MB. Free memory was 76.1 MB in the beginning and 79.9 MB in the end (delta: -3.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:09,658 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 77.6 MB. Free memory was 34.7 MB in the beginning and 34.6 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:09,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.86 ms. Allocated memory is still 107.0 MB. Free memory was 75.9 MB in the beginning and 83.3 MB in the end (delta: -7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:09,659 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.61 ms. Allocated memory is still 107.0 MB. Free memory was 83.3 MB in the beginning and 81.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:09,660 INFO L168 Benchmark]: Boogie Preprocessor took 30.56 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 80.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:09,661 INFO L168 Benchmark]: RCFGBuilder took 719.79 ms. Allocated memory is still 107.0 MB. Free memory was 80.1 MB in the beginning and 53.4 MB in the end (delta: 26.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:09,661 INFO L168 Benchmark]: TraceAbstraction took 464.67 ms. Allocated memory is still 107.0 MB. Free memory was 52.8 MB in the beginning and 79.9 MB in the end (delta: -27.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:09,662 INFO L168 Benchmark]: Witness Printer took 4.39 ms. Allocated memory is still 107.0 MB. Free memory is still 79.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:09,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 77.6 MB. Free memory was 34.7 MB in the beginning and 34.6 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 325.86 ms. Allocated memory is still 107.0 MB. Free memory was 75.9 MB in the beginning and 83.3 MB in the end (delta: -7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.61 ms. Allocated memory is still 107.0 MB. Free memory was 83.3 MB in the beginning and 81.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.56 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 80.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 719.79 ms. Allocated memory is still 107.0 MB. Free memory was 80.1 MB in the beginning and 53.4 MB in the end (delta: 26.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 464.67 ms. Allocated memory is still 107.0 MB. Free memory was 52.8 MB in the beginning and 79.9 MB in the end (delta: -27.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.39 ms. Allocated memory is still 107.0 MB. Free memory is still 79.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 59, overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L13] static const float huge_ceil = 1.0e30; [L68] float x = 0.0f / 0.0f; [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; VAL [huge_ceil=1000000000000000000000000000000] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f VAL [huge_ceil=1000000000000000000000000000000] [L25] COND FALSE !(j0 < 23) [L45] COND FALSE !(!((ix) < 0x7f800000L)) [L48] return x; VAL [huge_ceil=1000000000000000000000000000000] [L70] float res = ceil_float(x); [L59] return x != x; [L73] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1091.c", 3, "reach_error") VAL [huge_ceil=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 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=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:40:12,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:12,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:12,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:12,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:12,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:12,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:12,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:12,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:12,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:12,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:12,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:12,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:12,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:12,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:12,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:12,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:12,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:12,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:12,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:12,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:12,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:12,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:12,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:12,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:12,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:12,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:12,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:12,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:12,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:12,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:12,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:12,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:12,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:12,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:12,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:12,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:12,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:12,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:12,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:12,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:12,411 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:40:12,448 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:12,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:12,454 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:12,454 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:12,455 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:12,455 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:12,455 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:12,455 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:12,455 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:12,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:12,458 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:40:12,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:40:12,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:12,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:40:12,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:12,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:40:12,460 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:40:12,460 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:40:12,460 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:40:12,460 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:40:12,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:40:12,461 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:12,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:40:12,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:12,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:40:12,462 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:12,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:12,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:12,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:12,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:12,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:40:12,463 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:40:12,464 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:40:12,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:40:12,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:12,464 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:12,465 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_55357c1f-825d-4bc0-a124-b21f403ae709/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d [2020-11-28 07:40:12,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:12,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:12,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:12,876 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:12,877 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:12,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2020-11-28 07:40:12,942 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/data/90504360b/a86af9ad90ea4b35b2d1c0d8df95b555/FLAGf95329716 [2020-11-28 07:40:13,515 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:13,516 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2020-11-28 07:40:13,523 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/data/90504360b/a86af9ad90ea4b35b2d1c0d8df95b555/FLAGf95329716 [2020-11-28 07:40:13,882 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/data/90504360b/a86af9ad90ea4b35b2d1c0d8df95b555 [2020-11-28 07:40:13,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:13,887 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:13,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:13,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:13,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:13,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:13" (1/1) ... [2020-11-28 07:40:13,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c394bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:13, skipping insertion in model container [2020-11-28 07:40:13,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:13" (1/1) ... [2020-11-28 07:40:13,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:13,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:14,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:14,123 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:40:14,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:14,187 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:40:14,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14 WrapperNode [2020-11-28 07:40:14,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:14,189 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:14,189 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:40:14,189 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:40:14,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14" (1/1) ... [2020-11-28 07:40:14,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14" (1/1) ... [2020-11-28 07:40:14,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:14,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:40:14,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:40:14,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:40:14,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14" (1/1) ... [2020-11-28 07:40:14,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14" (1/1) ... [2020-11-28 07:40:14,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14" (1/1) ... [2020-11-28 07:40:14,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14" (1/1) ... [2020-11-28 07:40:14,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14" (1/1) ... [2020-11-28 07:40:14,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14" (1/1) ... [2020-11-28 07:40:14,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14" (1/1) ... [2020-11-28 07:40:14,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:40:14,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:40:14,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:40:14,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:40:14,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:40:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:40:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-28 07:40:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 07:40:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:40:14,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:40:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-28 07:40:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 07:40:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:40:15,098 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:40:15,098 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-28 07:40:15,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:15 BoogieIcfgContainer [2020-11-28 07:40:15,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:40:15,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:40:15,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:40:15,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:40:15,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:40:13" (1/3) ... [2020-11-28 07:40:15,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aaedd8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:15, skipping insertion in model container [2020-11-28 07:40:15,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:14" (2/3) ... [2020-11-28 07:40:15,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aaedd8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:15, skipping insertion in model container [2020-11-28 07:40:15,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:15" (3/3) ... [2020-11-28 07:40:15,107 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2020-11-28 07:40:15,116 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:40:15,119 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:40:15,137 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:40:15,178 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:40:15,178 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:40:15,178 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:40:15,179 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:40:15,179 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:40:15,179 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:40:15,179 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:40:15,179 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:40:15,197 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-11-28 07:40:15,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:40:15,202 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:15,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:15,203 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:15,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:15,209 INFO L82 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2020-11-28 07:40:15,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:15,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419220403] [2020-11-28 07:40:15,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 07:40:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:15,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:40:15,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:15,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:15,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:15,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419220403] [2020-11-28 07:40:15,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:15,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:40:15,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359345716] [2020-11-28 07:40:15,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:40:15,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:40:15,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:40:15,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:40:15,411 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-11-28 07:40:15,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:15,425 INFO L93 Difference]: Finished difference Result 51 states and 77 transitions. [2020-11-28 07:40:15,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:40:15,426 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 07:40:15,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:15,433 INFO L225 Difference]: With dead ends: 51 [2020-11-28 07:40:15,434 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 07:40:15,436 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 [2020-11-28 07:40:15,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 07:40:15,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-28 07:40:15,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 07:40:15,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2020-11-28 07:40:15,475 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2020-11-28 07:40:15,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:15,475 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-11-28 07:40:15,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:40:15,476 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-11-28 07:40:15,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:40:15,477 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:15,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:15,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:40:15,692 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:15,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:15,692 INFO L82 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2020-11-28 07:40:15,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:15,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859351472] [2020-11-28 07:40:15,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 07:40:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:15,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:40:15,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:16,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:16,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:16,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:16,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859351472] [2020-11-28 07:40:16,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:16,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-28 07:40:16,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813266292] [2020-11-28 07:40:16,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 07:40:16,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:40:16,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 07:40:16,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:40:16,130 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 10 states. [2020-11-28 07:40:16,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:16,661 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-11-28 07:40:16,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:40:16,662 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-11-28 07:40:16,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:16,663 INFO L225 Difference]: With dead ends: 34 [2020-11-28 07:40:16,663 INFO L226 Difference]: Without dead ends: 18 [2020-11-28 07:40:16,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:40:16,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-28 07:40:16,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-28 07:40:16,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 07:40:16,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-28 07:40:16,667 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2020-11-28 07:40:16,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:16,668 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-28 07:40:16,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 07:40:16,668 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-28 07:40:16,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 07:40:16,668 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:16,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:16,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:40:16,880 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:16,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:16,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1612289523, now seen corresponding path program 1 times [2020-11-28 07:40:16,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:16,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935771669] [2020-11-28 07:40:16,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-28 07:40:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:17,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 07:40:17,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:17,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:17,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:17,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935771669] [2020-11-28 07:40:17,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:17,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-28 07:40:17,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614124829] [2020-11-28 07:40:17,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:40:17,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:40:17,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:40:17,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:40:17,337 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 8 states. [2020-11-28 07:40:17,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:17,493 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-11-28 07:40:17,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:40:17,493 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-28 07:40:17,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:17,494 INFO L225 Difference]: With dead ends: 18 [2020-11-28 07:40:17,494 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:40:17,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:40:17,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:40:17,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:40:17,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:40:17,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:40:17,495 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-28 07:40:17,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:17,495 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:40:17,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:40:17,495 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:40:17,495 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:40:17,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:40:17,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:40:17,823 INFO L274 CegarLoopResult]: For program point L27(lines 27 33) no Hoare annotation was computed. [2020-11-28 07:40:17,823 INFO L274 CegarLoopResult]: For program point L73(lines 73 76) no Hoare annotation was computed. [2020-11-28 07:40:17,823 INFO L274 CegarLoopResult]: For program point L36(lines 36 37) no Hoare annotation was computed. [2020-11-28 07:40:17,824 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 07:40:17,824 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-28 07:40:17,824 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 07:40:17,824 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:40:17,824 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 07:40:17,824 INFO L274 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-11-28 07:40:17,824 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 07:40:17,824 INFO L277 CegarLoopResult]: At program point L78(lines 61 79) the Hoare annotation is: true [2020-11-28 07:40:17,824 INFO L274 CegarLoopResult]: For program point L45(lines 45 48) no Hoare annotation was computed. [2020-11-28 07:40:17,824 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:40:17,824 INFO L274 CegarLoopResult]: For program point L25(lines 25 49) no Hoare annotation was computed. [2020-11-28 07:40:17,824 INFO L274 CegarLoopResult]: For program point L50(lines 50 54) no Hoare annotation was computed. [2020-11-28 07:40:17,825 INFO L274 CegarLoopResult]: For program point L50-1(lines 15 56) no Hoare annotation was computed. [2020-11-28 07:40:17,825 INFO L274 CegarLoopResult]: For program point L50-2(lines 50 54) no Hoare annotation was computed. [2020-11-28 07:40:17,825 INFO L274 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2020-11-28 07:40:17,825 INFO L274 CegarLoopResult]: For program point L30(lines 30 32) no Hoare annotation was computed. [2020-11-28 07:40:17,825 INFO L270 CegarLoopResult]: At program point L59(line 59) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq |ULTIMATE.start_ceil_float_#res| |ULTIMATE.start_ceil_float_#res|)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_ceil_float_~x))) [2020-11-28 07:40:17,825 INFO L274 CegarLoopResult]: For program point L26(lines 26 43) no Hoare annotation was computed. [2020-11-28 07:40:17,825 INFO L270 CegarLoopResult]: At program point L55(lines 15 56) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_ceil_float_#res| |ULTIMATE.start_ceil_float_#res|)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_ceil_float_~x))) [2020-11-28 07:40:17,825 INFO L274 CegarLoopResult]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2020-11-28 07:40:17,825 INFO L270 CegarLoopResult]: At program point L18-2(lines 18 22) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_ceil_float_~x)) [2020-11-28 07:40:17,825 INFO L274 CegarLoopResult]: For program point L18-3(lines 18 22) no Hoare annotation was computed. [2020-11-28 07:40:17,826 INFO L274 CegarLoopResult]: For program point L39(lines 39 40) no Hoare annotation was computed. [2020-11-28 07:40:17,826 INFO L274 CegarLoopResult]: For program point L39-2(lines 39 40) no Hoare annotation was computed. [2020-11-28 07:40:17,831 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:40:17,837 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:40:17,844 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:40:17,847 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:40:17,847 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:40:17,848 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:40:17,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:40:17 BoogieIcfgContainer [2020-11-28 07:40:17,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:40:17,850 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:40:17,851 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:40:17,851 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:40:17,851 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:15" (3/4) ... [2020-11-28 07:40:17,854 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:40:17,865 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-28 07:40:17,865 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 07:40:17,865 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:40:17,866 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:40:17,891 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-28 07:40:17,892 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~FLOAT(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-28 07:40:17,893 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && !~fp.eq~FLOAT(\result, \result)) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-28 07:40:17,930 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_55357c1f-825d-4bc0-a124-b21f403ae709/bin/utaipan/witness.graphml [2020-11-28 07:40:17,930 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:40:17,933 INFO L168 Benchmark]: Toolchain (without parser) took 4043.73 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 40.5 MB in the beginning and 33.3 MB in the end (delta: 7.2 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:17,933 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 60.8 MB. Free memory is still 43.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:17,934 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.28 ms. Allocated memory is still 60.8 MB. Free memory was 40.3 MB in the beginning and 29.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:17,937 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.34 ms. Allocated memory is still 60.8 MB. Free memory was 29.4 MB in the beginning and 27.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:17,937 INFO L168 Benchmark]: Boogie Preprocessor took 52.08 ms. Allocated memory is still 60.8 MB. Free memory was 27.8 MB in the beginning and 26.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:17,937 INFO L168 Benchmark]: RCFGBuilder took 795.91 ms. Allocated memory is still 60.8 MB. Free memory was 26.2 MB in the beginning and 28.7 MB in the end (delta: -2.5 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:17,938 INFO L168 Benchmark]: TraceAbstraction took 2748.76 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 28.1 MB in the beginning and 36.4 MB in the end (delta: -8.3 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:17,939 INFO L168 Benchmark]: Witness Printer took 79.64 ms. Allocated memory is still 79.7 MB. Free memory was 36.4 MB in the beginning and 33.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:17,944 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 60.8 MB. Free memory is still 43.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.28 ms. Allocated memory is still 60.8 MB. Free memory was 40.3 MB in the beginning and 29.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.34 ms. Allocated memory is still 60.8 MB. Free memory was 29.4 MB in the beginning and 27.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.08 ms. Allocated memory is still 60.8 MB. Free memory was 27.8 MB in the beginning and 26.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 795.91 ms. Allocated memory is still 60.8 MB. Free memory was 26.2 MB in the beginning and 28.7 MB in the end (delta: -2.5 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2748.76 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 28.1 MB in the beginning and 36.4 MB in the end (delta: -8.3 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * Witness Printer took 79.64 ms. Allocated memory is still 79.7 MB. Free memory was 36.4 MB in the beginning and 33.3 MB in the end (delta: 3.2 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[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant [2020-11-28 07:40:17,954 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:40:17,955 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 59]: Loop Invariant [2020-11-28 07:40:17,955 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:40:17,956 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (1bv32 == \result && !~fp.eq~FLOAT(\result, \result)) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 15]: Loop Invariant [2020-11-28 07:40:17,958 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:40:17,959 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: !~fp.eq~FLOAT(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 18 SDslu, 65 SDs, 0 SdLazy, 46 SolverSat, 4 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 35 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 11 QuantifiedInterpolants, 2710 SizeOfPredicates, 19 NumberOfNonLiveVariables, 146 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...