./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0921.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_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0921.c -s /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/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 1136c048c7bb954ba4fcc2a6dd3e995696fc40b9 ............................................................................................................................................................................................................................................................................................................ 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_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0921.c -s /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/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 1136c048c7bb954ba4fcc2a6dd3e995696fc40b9 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:15:16,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:15:16,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:15:16,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:15:16,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:15:16,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:15:16,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:15:16,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:15:16,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:15:16,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:15:16,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:15:16,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:15:16,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:15:16,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:15:16,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:15:16,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:15:16,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:15:16,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:15:16,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:15:16,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:15:16,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:15:16,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:15:16,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:15:16,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:15:16,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:15:16,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:15:16,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:15:16,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:15:16,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:15:16,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:15:16,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:15:16,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:15:16,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:15:16,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:15:16,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:15:16,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:15:16,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:15:16,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:15:16,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:15:16,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:15:16,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:15:16,781 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:15:16,834 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:15:16,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:15:16,836 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:15:16,836 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:15:16,836 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:15:16,836 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:15:16,837 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:15:16,837 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:15:16,837 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:15:16,837 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:15:16,839 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:15:16,839 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:15:16,839 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:15:16,840 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:15:16,840 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:15:16,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:15:16,841 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:15:16,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:15:16,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:15:16,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:15:16,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:15:16,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:15:16,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:15:16,842 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:15:16,843 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:15:16,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:15:16,843 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:15:16,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:15:16,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:15:16,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:15:16,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:15:16,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:15:16,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:15:16,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:15:16,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:15:16,846 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:15:16,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:15:16,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:15:16,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:15:16,847 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:15:16,847 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_dce629d2-7447-42d4-bbcf-11f1f1df24fa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1136c048c7bb954ba4fcc2a6dd3e995696fc40b9 [2020-11-30 02:15:17,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:15:17,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:15:17,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:15:17,148 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:15:17,149 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:15:17,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0921.c [2020-11-30 02:15:17,242 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan/data/431fe45c7/cbaaee67a363488a9570c5eab3cbd50d/FLAG49432e527 [2020-11-30 02:15:17,753 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:15:17,754 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/sv-benchmarks/c/float-newlib/float_req_bl_0921.c [2020-11-30 02:15:17,764 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan/data/431fe45c7/cbaaee67a363488a9570c5eab3cbd50d/FLAG49432e527 [2020-11-30 02:15:18,150 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan/data/431fe45c7/cbaaee67a363488a9570c5eab3cbd50d [2020-11-30 02:15:18,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:15:18,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:15:18,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:15:18,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:15:18,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:15:18,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:15:18" (1/1) ... [2020-11-30 02:15:18,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf3a094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:18, skipping insertion in model container [2020-11-30 02:15:18,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:15:18" (1/1) ... [2020-11-30 02:15:18,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:15:18,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:15:18,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:15:18,407 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:15:18,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:15:18,469 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:15:18,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:18 WrapperNode [2020-11-30 02:15:18,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:15:18,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:15:18,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:15:18,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:15:18,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:18" (1/1) ... [2020-11-30 02:15:18,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:18" (1/1) ... [2020-11-30 02:15:18,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:15:18,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:15:18,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:15:18,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:15:18,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:18" (1/1) ... [2020-11-30 02:15:18,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:18" (1/1) ... [2020-11-30 02:15:18,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:18" (1/1) ... [2020-11-30 02:15:18,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:18" (1/1) ... [2020-11-30 02:15:18,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:18" (1/1) ... [2020-11-30 02:15:18,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:18" (1/1) ... [2020-11-30 02:15:18,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:18" (1/1) ... [2020-11-30 02:15:18,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:15:18,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:15:18,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:15:18,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:15:18,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/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 [2020-11-30 02:15:18,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:15:18,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:15:18,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-30 02:15:18,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 02:15:18,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 02:15:18,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:15:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:15:18,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 02:15:18,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:15:19,337 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:15:19,337 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-30 02:15:19,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:15:19 BoogieIcfgContainer [2020-11-30 02:15:19,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:15:19,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:15:19,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:15:19,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:15:19,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:15:18" (1/3) ... [2020-11-30 02:15:19,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b3838d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:15:19, skipping insertion in model container [2020-11-30 02:15:19,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:18" (2/3) ... [2020-11-30 02:15:19,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b3838d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:15:19, skipping insertion in model container [2020-11-30 02:15:19,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:15:19" (3/3) ... [2020-11-30 02:15:19,346 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0921.c [2020-11-30 02:15:19,356 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:15:19,361 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:15:19,374 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:15:19,400 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:15:19,400 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:15:19,400 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:15:19,400 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:15:19,400 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:15:19,400 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:15:19,401 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:15:19,401 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:15:19,411 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-30 02:15:19,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:15:19,415 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:15:19,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:15:19,416 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:15:19,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:15:19,422 INFO L82 PathProgramCache]: Analyzing trace with hash 225696725, now seen corresponding path program 1 times [2020-11-30 02:15:19,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:15:19,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340171883] [2020-11-30 02:15:19,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:15:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:15:19,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:15:19,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340171883] [2020-11-30 02:15:19,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:15:19,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:15:19,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758276980] [2020-11-30 02:15:19,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:15:19,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:15:19,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:15:19,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:15:19,590 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-11-30 02:15:19,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:15:19,607 INFO L93 Difference]: Finished difference Result 39 states and 59 transitions. [2020-11-30 02:15:19,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:15:19,609 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-30 02:15:19,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:15:19,618 INFO L225 Difference]: With dead ends: 39 [2020-11-30 02:15:19,618 INFO L226 Difference]: Without dead ends: 18 [2020-11-30 02:15:19,621 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 [2020-11-30 02:15:19,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-30 02:15:19,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-30 02:15:19,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 02:15:19,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-11-30 02:15:19,652 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 7 [2020-11-30 02:15:19,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:15:19,653 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-30 02:15:19,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:15:19,653 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-11-30 02:15:19,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 02:15:19,654 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:15:19,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:15:19,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:15:19,654 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:15:19,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:15:19,655 INFO L82 PathProgramCache]: Analyzing trace with hash 635277308, now seen corresponding path program 1 times [2020-11-30 02:15:19,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:15:19,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213542028] [2020-11-30 02:15:19,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:15:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:15:19,704 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:15:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:15:19,761 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:15:19,804 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 02:15:19,804 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:15:19,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:15:19,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:15:19 BoogieIcfgContainer [2020-11-30 02:15:19,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:15:19,866 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:15:19,866 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:15:19,867 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:15:19,867 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:15:19" (3/4) ... [2020-11-30 02:15:19,870 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 02:15:19,871 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:15:19,876 INFO L168 Benchmark]: Toolchain (without parser) took 1717.31 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 61.2 MB in the beginning and 63.0 MB in the end (delta: -1.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:15:19,877 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 92.3 MB. Free memory was 50.8 MB in the beginning and 50.8 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:15:19,878 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.92 ms. Allocated memory is still 92.3 MB. Free memory was 61.1 MB in the beginning and 67.8 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:15:19,879 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.27 ms. Allocated memory is still 92.3 MB. Free memory was 67.8 MB in the beginning and 66.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:15:19,879 INFO L168 Benchmark]: Boogie Preprocessor took 30.60 ms. Allocated memory is still 92.3 MB. Free memory was 66.1 MB in the beginning and 64.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:15:19,880 INFO L168 Benchmark]: RCFGBuilder took 768.17 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 64.4 MB in the beginning and 86.6 MB in the end (delta: -22.2 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:15:19,881 INFO L168 Benchmark]: TraceAbstraction took 524.40 ms. Allocated memory is still 111.1 MB. Free memory was 86.1 MB in the beginning and 63.5 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:15:19,882 INFO L168 Benchmark]: Witness Printer took 5.79 ms. Allocated memory is still 111.1 MB. Free memory was 63.5 MB in the beginning and 63.0 MB in the end (delta: 460.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:15:19,886 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 92.3 MB. Free memory was 50.8 MB in the beginning and 50.8 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 313.92 ms. Allocated memory is still 92.3 MB. Free memory was 61.1 MB in the beginning and 67.8 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.27 ms. Allocated memory is still 92.3 MB. Free memory was 67.8 MB in the beginning and 66.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.60 ms. Allocated memory is still 92.3 MB. Free memory was 66.1 MB in the beginning and 64.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 768.17 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 64.4 MB in the beginning and 86.6 MB in the end (delta: -22.2 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 524.40 ms. Allocated memory is still 111.1 MB. Free memory was 86.1 MB in the beginning and 63.5 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.79 ms. Allocated memory is still 111.1 MB. Free memory was 63.5 MB in the beginning and 63.0 MB in the end (delta: 460.8 kB). 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 113, overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 45. Possible FailurePath: [L26-L30] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L32] static const float zero_log = 0.0; [L121] float x = 0.0f / 0.0f; [L35] float hfsq, f, s, z, R, w, t1, t2, dk; [L36] __int32_t k, ix, i, j; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L39] ieee_float_shape_type gf_u; [L40] gf_u.value = (x) [L41] EXPR gf_u.word [L41] (ix) = gf_u.word [L44] k = 0 VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L45] COND TRUE ((ix & 0x7fffffff) == 0) [L46] return -two25_log / zero_log; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L122] float res = __ieee754_logf(x); [L113] return x != x; [L125] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_0921.c", 3, "reach_error") VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 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=20occurred 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 [2020-11-30 02:15:22,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:15:22,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:15:22,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:15:22,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:15:22,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:15:22,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:15:22,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:15:22,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:15:22,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:15:22,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:15:22,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:15:22,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:15:22,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:15:22,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:15:22,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:15:22,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:15:22,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:15:22,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:15:22,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:15:22,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:15:22,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:15:22,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:15:22,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:15:22,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:15:22,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:15:22,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:15:22,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:15:22,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:15:22,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:15:22,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:15:22,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:15:22,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:15:22,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:15:22,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:15:22,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:15:22,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:15:22,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:15:22,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:15:22,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:15:22,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:15:22,493 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 02:15:22,539 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:15:22,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:15:22,541 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:15:22,541 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:15:22,541 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:15:22,542 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:15:22,542 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:15:22,542 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:15:22,543 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:15:22,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:15:22,544 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:15:22,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:15:22,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:15:22,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:15:22,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:15:22,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:15:22,546 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:15:22,550 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 02:15:22,550 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 02:15:22,551 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:15:22,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:15:22,551 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:15:22,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:15:22,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:15:22,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 02:15:22,553 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:15:22,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:15:22,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:15:22,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:15:22,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:15:22,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:15:22,555 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 02:15:22,556 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 02:15:22,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:15:22,556 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:15:22,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:15:22,558 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_dce629d2-7447-42d4-bbcf-11f1f1df24fa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1136c048c7bb954ba4fcc2a6dd3e995696fc40b9 [2020-11-30 02:15:22,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:15:22,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:15:22,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:15:22,983 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:15:22,984 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:15:22,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0921.c [2020-11-30 02:15:23,070 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan/data/a17660f00/f2c01cde6f7d4efb86a915dce40ce3d4/FLAG42aba6f6f [2020-11-30 02:15:23,637 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:15:23,637 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/sv-benchmarks/c/float-newlib/float_req_bl_0921.c [2020-11-30 02:15:23,647 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan/data/a17660f00/f2c01cde6f7d4efb86a915dce40ce3d4/FLAG42aba6f6f [2020-11-30 02:15:23,993 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan/data/a17660f00/f2c01cde6f7d4efb86a915dce40ce3d4 [2020-11-30 02:15:23,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:15:23,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:15:24,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:15:24,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:15:24,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:15:24,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:15:23" (1/1) ... [2020-11-30 02:15:24,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be891c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:24, skipping insertion in model container [2020-11-30 02:15:24,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:15:23" (1/1) ... [2020-11-30 02:15:24,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:15:24,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:15:24,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:15:24,364 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:15:24,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:15:24,468 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:15:24,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:24 WrapperNode [2020-11-30 02:15:24,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:15:24,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:15:24,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:15:24,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:15:24,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:24" (1/1) ... [2020-11-30 02:15:24,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:24" (1/1) ... [2020-11-30 02:15:24,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:15:24,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:15:24,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:15:24,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:15:24,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:24" (1/1) ... [2020-11-30 02:15:24,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:24" (1/1) ... [2020-11-30 02:15:24,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:24" (1/1) ... [2020-11-30 02:15:24,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:24" (1/1) ... [2020-11-30 02:15:24,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:24" (1/1) ... [2020-11-30 02:15:24,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:24" (1/1) ... [2020-11-30 02:15:24,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:24" (1/1) ... [2020-11-30 02:15:24,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:15:24,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:15:24,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:15:24,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:15:24,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/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 [2020-11-30 02:15:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 02:15:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:15:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-30 02:15:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 02:15:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:15:24,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:15:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-30 02:15:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 02:15:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:15:40,062 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:15:40,063 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-30 02:15:40,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:15:40 BoogieIcfgContainer [2020-11-30 02:15:40,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:15:40,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:15:40,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:15:40,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:15:40,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:15:23" (1/3) ... [2020-11-30 02:15:40,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a5caa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:15:40, skipping insertion in model container [2020-11-30 02:15:40,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:15:24" (2/3) ... [2020-11-30 02:15:40,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a5caa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:15:40, skipping insertion in model container [2020-11-30 02:15:40,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:15:40" (3/3) ... [2020-11-30 02:15:40,072 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0921.c [2020-11-30 02:15:40,083 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:15:40,087 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:15:40,098 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:15:40,120 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:15:40,120 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:15:40,121 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:15:40,121 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:15:40,121 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:15:40,121 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:15:40,121 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:15:40,121 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:15:40,133 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-11-30 02:15:40,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 02:15:40,138 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:15:40,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:15:40,139 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:15:40,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:15:40,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1904103824, now seen corresponding path program 1 times [2020-11-30 02:15:40,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:15:40,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150810174] [2020-11-30 02:15:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/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 [2020-11-30 02:15:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:15:40,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 02:15:40,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:15:40,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:15:40,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:15:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:15:40,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150810174] [2020-11-30 02:15:40,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:15:40,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 02:15:40,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126971962] [2020-11-30 02:15:40,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:15:40,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:15:40,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:15:40,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:15:40,816 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2020-11-30 02:15:40,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:15:40,833 INFO L93 Difference]: Finished difference Result 59 states and 93 transitions. [2020-11-30 02:15:40,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:15:40,835 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-30 02:15:40,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:15:40,843 INFO L225 Difference]: With dead ends: 59 [2020-11-30 02:15:40,844 INFO L226 Difference]: Without dead ends: 27 [2020-11-30 02:15:40,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:15:40,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-30 02:15:40,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-30 02:15:40,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 02:15:40,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-30 02:15:40,878 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 9 [2020-11-30 02:15:40,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:15:40,878 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-30 02:15:40,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:15:40,879 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-30 02:15:40,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 02:15:40,879 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:15:40,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:15:41,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 02:15:41,095 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:15:41,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:15:41,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1484246989, now seen corresponding path program 1 times [2020-11-30 02:15:41,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:15:41,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885389539] [2020-11-30 02:15:41,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/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 [2020-11-30 02:15:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:15:41,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 02:15:41,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:15:41,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:15:41,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:15:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:15:41,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885389539] [2020-11-30 02:15:41,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:15:41,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 02:15:41,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540277659] [2020-11-30 02:15:41,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:15:41,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:15:41,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:15:41,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:15:41,846 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 6 states. [2020-11-30 02:15:45,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:15:45,278 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2020-11-30 02:15:45,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:15:45,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-30 02:15:45,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:15:45,413 INFO L225 Difference]: With dead ends: 42 [2020-11-30 02:15:45,413 INFO L226 Difference]: Without dead ends: 37 [2020-11-30 02:15:45,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:15:45,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-30 02:15:45,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2020-11-30 02:15:45,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 02:15:45,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2020-11-30 02:15:45,421 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 10 [2020-11-30 02:15:45,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:15:45,421 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-11-30 02:15:45,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:15:45,421 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2020-11-30 02:15:45,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 02:15:45,422 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:15:45,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:15:45,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 02:15:45,623 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:15:45,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:15:45,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1245975282, now seen corresponding path program 1 times [2020-11-30 02:15:45,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:15:45,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593287128] [2020-11-30 02:15:45,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/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 [2020-11-30 02:15:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:15:46,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 02:15:46,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:15:46,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:15:46,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:15:51,263 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-11-30 02:15:51,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:15:51,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593287128] [2020-11-30 02:15:51,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:15:51,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-30 02:15:51,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295442906] [2020-11-30 02:15:51,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 02:15:51,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:15:51,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 02:15:51,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-30 02:15:51,285 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand 10 states. [2020-11-30 02:16:15,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:16:15,378 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2020-11-30 02:16:15,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:16:15,382 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-11-30 02:16:15,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:16:15,383 INFO L225 Difference]: With dead ends: 37 [2020-11-30 02:16:15,384 INFO L226 Difference]: Without dead ends: 32 [2020-11-30 02:16:15,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-30 02:16:15,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-30 02:16:15,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2020-11-30 02:16:15,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 02:16:15,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2020-11-30 02:16:15,392 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2020-11-30 02:16:15,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:16:15,392 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-11-30 02:16:15,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 02:16:15,392 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2020-11-30 02:16:15,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 02:16:15,393 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:16:15,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:16:15,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 02:16:15,597 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:16:15,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:16:15,597 INFO L82 PathProgramCache]: Analyzing trace with hash 933407232, now seen corresponding path program 1 times [2020-11-30 02:16:15,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:16:15,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344222222] [2020-11-30 02:16:15,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 02:16:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:16:16,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 02:16:16,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:16:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:16:16,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:16:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:16:16,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344222222] [2020-11-30 02:16:16,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:16:16,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-30 02:16:16,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852427817] [2020-11-30 02:16:16,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 02:16:16,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:16:16,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 02:16:16,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:16:16,210 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand 8 states. [2020-11-30 02:16:16,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:16:16,307 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2020-11-30 02:16:16,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:16:16,307 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-11-30 02:16:16,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:16:16,308 INFO L225 Difference]: With dead ends: 27 [2020-11-30 02:16:16,308 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:16:16,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-30 02:16:16,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:16:16,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:16:16,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:16:16,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:16:16,309 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-11-30 02:16:16,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:16:16,309 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:16:16,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 02:16:16,310 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:16:16,310 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:16:16,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 02:16:16,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:16:16,685 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 02:16:16,685 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-30 02:16:16,685 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:16:16,685 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 02:16:16,685 INFO L274 CegarLoopResult]: For program point L45(lines 45 46) no Hoare annotation was computed. [2020-11-30 02:16:16,685 INFO L274 CegarLoopResult]: For program point L70(lines 70 86) no Hoare annotation was computed. [2020-11-30 02:16:16,685 INFO L274 CegarLoopResult]: For program point L54-1(lines 54 58) no Hoare annotation was computed. [2020-11-30 02:16:16,686 INFO L270 CegarLoopResult]: At program point L54-2(lines 54 58) the Hoare annotation is: false [2020-11-30 02:16:16,686 INFO L274 CegarLoopResult]: For program point L71(lines 71 78) no Hoare annotation was computed. [2020-11-30 02:16:16,686 INFO L274 CegarLoopResult]: For program point L38-1(lines 38 42) no Hoare annotation was computed. [2020-11-30 02:16:16,686 INFO L270 CegarLoopResult]: At program point L38-2(lines 38 42) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start___ieee754_logf_~x)) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ~zero_log~0)) [2020-11-30 02:16:16,686 INFO L274 CegarLoopResult]: For program point L38-3(lines 38 42) no Hoare annotation was computed. [2020-11-30 02:16:16,686 INFO L274 CegarLoopResult]: For program point L63-1(lines 63 67) no Hoare annotation was computed. [2020-11-30 02:16:16,686 INFO L270 CegarLoopResult]: At program point L63-2(lines 63 67) the Hoare annotation is: false [2020-11-30 02:16:16,686 INFO L274 CegarLoopResult]: For program point L63-3(lines 63 67) no Hoare annotation was computed. [2020-11-30 02:16:16,687 INFO L270 CegarLoopResult]: At program point L113(line 113) the Hoare annotation is: (and (= (fp.div roundNearestTiesToEven (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.sub roundNearestTiesToEven .cse0 .cse0)) ((_ to_fp 8 24) roundNearestTiesToEven (_ +zero 11 53))) |ULTIMATE.start___ieee754_logf_#res|) (= currentRoundingMode roundNearestTiesToEven) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start___ieee754_logf_~x) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ~zero_log~0)) [2020-11-30 02:16:16,687 INFO L274 CegarLoopResult]: For program point L80(lines 80 85) no Hoare annotation was computed. [2020-11-30 02:16:16,687 INFO L274 CegarLoopResult]: For program point L47(lines 47 48) no Hoare annotation was computed. [2020-11-30 02:16:16,687 INFO L274 CegarLoopResult]: For program point L105(lines 105 108) no Hoare annotation was computed. [2020-11-30 02:16:16,687 INFO L274 CegarLoopResult]: For program point L72(lines 72 77) no Hoare annotation was computed. [2020-11-30 02:16:16,687 INFO L277 CegarLoopResult]: At program point L130(lines 115 131) the Hoare annotation is: true [2020-11-30 02:16:16,687 INFO L274 CegarLoopResult]: For program point L97(lines 97 109) no Hoare annotation was computed. [2020-11-30 02:16:16,687 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 02:16:16,687 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 02:16:16,687 INFO L274 CegarLoopResult]: For program point L49(lines 49 50) no Hoare annotation was computed. [2020-11-30 02:16:16,688 INFO L274 CegarLoopResult]: For program point L99(lines 99 103) no Hoare annotation was computed. [2020-11-30 02:16:16,688 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:16:16,688 INFO L270 CegarLoopResult]: At program point L108(lines 34 110) the Hoare annotation is: (and (= (fp.div roundNearestTiesToEven (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.sub roundNearestTiesToEven .cse0 .cse0)) ((_ to_fp 8 24) roundNearestTiesToEven (_ +zero 11 53))) |ULTIMATE.start___ieee754_logf_#res|) (= currentRoundingMode roundNearestTiesToEven) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start___ieee754_logf_~x) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ~zero_log~0)) [2020-11-30 02:16:16,688 INFO L274 CegarLoopResult]: For program point L125(lines 125 128) no Hoare annotation was computed. [2020-11-30 02:16:16,688 INFO L274 CegarLoopResult]: For program point L51(lines 51 59) no Hoare annotation was computed. [2020-11-30 02:16:16,688 INFO L274 CegarLoopResult]: For program point L51-1(lines 51 59) no Hoare annotation was computed. [2020-11-30 02:16:16,704 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,705 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,706 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,706 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,708 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,709 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,710 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,711 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,712 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,716 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,716 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,717 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,717 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,717 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,717 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,718 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,718 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,718 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,720 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,720 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,720 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,720 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,728 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,729 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,729 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,729 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,729 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,730 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,730 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,730 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,730 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,731 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,731 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,732 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,732 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,732 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,733 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,733 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 02:16:16,734 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,734 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,735 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,735 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 02:16:16,735 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,735 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:16:16 BoogieIcfgContainer [2020-11-30 02:16:16,738 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:16:16,738 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:16:16,738 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:16:16,739 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:16:16,739 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:15:40" (3/4) ... [2020-11-30 02:16:16,742 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:16:16,756 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-30 02:16:16,756 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-30 02:16:16,757 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:16:16,757 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:16:16,783 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x)) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log [2020-11-30 02:16:16,784 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.sub~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())), ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE())) == \result && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log [2020-11-30 02:16:16,785 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.sub~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())), ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE())) == \result && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && 1bv32 == \result) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log [2020-11-30 02:16:16,836 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_dce629d2-7447-42d4-bbcf-11f1f1df24fa/bin/utaipan/witness.graphml [2020-11-30 02:16:16,837 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:16:16,838 INFO L168 Benchmark]: Toolchain (without parser) took 52838.41 ms. Allocated memory was 52.4 MB in the beginning and 77.6 MB in the end (delta: 25.2 MB). Free memory was 30.3 MB in the beginning and 30.2 MB in the end (delta: 68.0 kB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:16:16,838 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 52.4 MB. Free memory was 35.1 MB in the beginning and 35.1 MB in the end (delta: 39.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:16:16,839 INFO L168 Benchmark]: CACSL2BoogieTranslator took 462.74 ms. Allocated memory was 52.4 MB in the beginning and 77.6 MB in the end (delta: 25.2 MB). Free memory was 30.0 MB in the beginning and 61.2 MB in the end (delta: -31.2 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:16:16,840 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.49 ms. Allocated memory is still 77.6 MB. Free memory was 61.2 MB in the beginning and 59.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:16:16,840 INFO L168 Benchmark]: Boogie Preprocessor took 38.01 ms. Allocated memory is still 77.6 MB. Free memory was 59.0 MB in the beginning and 57.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:16:16,840 INFO L168 Benchmark]: RCFGBuilder took 15452.90 ms. Allocated memory is still 77.6 MB. Free memory was 57.2 MB in the beginning and 54.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:16:16,841 INFO L168 Benchmark]: TraceAbstraction took 36671.57 ms. Allocated memory is still 77.6 MB. Free memory was 53.8 MB in the beginning and 34.7 MB in the end (delta: 19.2 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:16:16,841 INFO L168 Benchmark]: Witness Printer took 98.49 ms. Allocated memory is still 77.6 MB. Free memory was 34.7 MB in the beginning and 30.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:16:16,843 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 52.4 MB. Free memory was 35.1 MB in the beginning and 35.1 MB in the end (delta: 39.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 462.74 ms. Allocated memory was 52.4 MB in the beginning and 77.6 MB in the end (delta: 25.2 MB). Free memory was 30.0 MB in the beginning and 61.2 MB in the end (delta: -31.2 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 91.49 ms. Allocated memory is still 77.6 MB. Free memory was 61.2 MB in the beginning and 59.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.01 ms. Allocated memory is still 77.6 MB. Free memory was 59.0 MB in the beginning and 57.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 15452.90 ms. Allocated memory is still 77.6 MB. Free memory was 57.2 MB in the beginning and 54.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 36671.57 ms. Allocated memory is still 77.6 MB. Free memory was 53.8 MB in the beginning and 34.7 MB in the end (delta: 19.2 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. * Witness Printer took 98.49 ms. Allocated memory is still 77.6 MB. Free memory was 34.7 MB in the beginning and 30.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * 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: 113]: Loop Invariant [2020-11-30 02:16:16,860 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,860 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,861 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,861 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,861 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,862 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,862 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,862 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,863 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,863 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,863 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,863 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,864 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,864 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,864 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,868 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,868 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,868 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (((~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.sub~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())), ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE())) == \result && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && 1bv32 == \result) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log - InvariantResult [Line: 34]: Loop Invariant [2020-11-30 02:16:16,875 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,875 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,875 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,875 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,875 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,875 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,877 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,877 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,877 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,877 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,877 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,878 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,878 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,878 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,878 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,879 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,879 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,879 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.sub~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())), ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE())) == \result && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log - InvariantResult [Line: 115]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 38]: Loop Invariant [2020-11-30 02:16:16,880 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,881 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 02:16:16,881 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,881 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,882 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-30 02:16:16,885 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 02:16:16,886 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-30 02:16:16,886 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x)) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 36.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 27.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 86 SDtfs, 104 SDslu, 154 SDs, 0 SdLazy, 108 SolverSat, 12 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 26.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 86 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 92 ConstructedInterpolants, 12 QuantifiedInterpolants, 6458 SizeOfPredicates, 24 NumberOfNonLiveVariables, 238 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...