./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0832b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0832b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/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 712005727f62c46a009e5aa995b5d1c386dc6cd1 ............................................................................................................................................................................................................................................................................................................................. 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_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0832b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/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 712005727f62c46a009e5aa995b5d1c386dc6cd1 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 19:40:00,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:40:00,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:40:00,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:40:00,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:40:00,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:40:00,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:40:00,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:40:00,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:40:00,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:40:00,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:40:00,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:40:00,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:40:00,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:40:00,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:40:00,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:40:00,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:40:00,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:40:00,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:40:00,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:40:00,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:40:00,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:40:00,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:40:00,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:40:00,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:40:00,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:40:00,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:40:00,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:40:00,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:40:00,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:40:00,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:40:00,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:40:00,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:40:00,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:40:00,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:40:00,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:40:00,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:40:00,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:40:00,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:40:00,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:40:00,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:40:00,834 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 19:40:00,850 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:40:00,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:40:00,851 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:40:00,851 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:40:00,851 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:40:00,851 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:40:00,852 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 19:40:00,852 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:40:00,852 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:40:00,852 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 19:40:00,852 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 19:40:00,852 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:40:00,852 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 19:40:00,852 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 19:40:00,852 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 19:40:00,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:40:00,853 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:40:00,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 19:40:00,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:40:00,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:40:00,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:40:00,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:40:00,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:40:00,854 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:40:00,854 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:40:00,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:40:00,854 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:40:00,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:40:00,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:40:00,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:40:00,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:40:00,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:40:00,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:40:00,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:40:00,855 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 19:40:00,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 19:40:00,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:40:00,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:40:00,855 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:40:00,855 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_b5401fd5-acd3-445a-9dd5-23da649b6d24/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 712005727f62c46a009e5aa995b5d1c386dc6cd1 [2020-12-09 19:40:01,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:40:01,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:40:01,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:40:01,041 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:40:01,042 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:40:01,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0832b.c [2020-12-09 19:40:01,084 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/data/73371352c/a1c4001cae46405288b2abcaa33db07b/FLAG697375ea6 [2020-12-09 19:40:01,459 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:40:01,459 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/sv-benchmarks/c/float-newlib/float_req_bl_0832b.c [2020-12-09 19:40:01,464 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/data/73371352c/a1c4001cae46405288b2abcaa33db07b/FLAG697375ea6 [2020-12-09 19:40:01,474 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/data/73371352c/a1c4001cae46405288b2abcaa33db07b [2020-12-09 19:40:01,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:40:01,477 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:40:01,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:40:01,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:40:01,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:40:01,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:40:01" (1/1) ... [2020-12-09 19:40:01,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48914882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:01, skipping insertion in model container [2020-12-09 19:40:01,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:40:01" (1/1) ... [2020-12-09 19:40:01,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:40:01,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:40:01,624 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/sv-benchmarks/c/float-newlib/float_req_bl_0832b.c[3181,3194] [2020-12-09 19:40:01,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:40:01,633 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:40:01,658 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/sv-benchmarks/c/float-newlib/float_req_bl_0832b.c[3181,3194] [2020-12-09 19:40:01,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:40:01,672 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:40:01,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:01 WrapperNode [2020-12-09 19:40:01,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:40:01,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:40:01,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:40:01,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:40:01,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:01" (1/1) ... [2020-12-09 19:40:01,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:01" (1/1) ... [2020-12-09 19:40:01,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:40:01,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:40:01,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:40:01,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:40:01,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:01" (1/1) ... [2020-12-09 19:40:01,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:01" (1/1) ... [2020-12-09 19:40:01,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:01" (1/1) ... [2020-12-09 19:40:01,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:01" (1/1) ... [2020-12-09 19:40:01,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:01" (1/1) ... [2020-12-09 19:40:01,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:01" (1/1) ... [2020-12-09 19:40:01,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:01" (1/1) ... [2020-12-09 19:40:01,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:40:01,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:40:01,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:40:01,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:40:01,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:40:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 19:40:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:40:01,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 19:40:01,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-09 19:40:01,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-09 19:40:01,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:40:01,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:40:01,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 19:40:01,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-12-09 19:40:01,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 19:40:02,119 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:40:02,119 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-09 19:40:02,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:40:02 BoogieIcfgContainer [2020-12-09 19:40:02,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:40:02,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:40:02,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:40:02,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:40:02,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:40:01" (1/3) ... [2020-12-09 19:40:02,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db03d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:40:02, skipping insertion in model container [2020-12-09 19:40:02,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:01" (2/3) ... [2020-12-09 19:40:02,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db03d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:40:02, skipping insertion in model container [2020-12-09 19:40:02,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:40:02" (3/3) ... [2020-12-09 19:40:02,126 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832b.c [2020-12-09 19:40:02,136 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:40:02,139 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 19:40:02,147 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 19:40:02,164 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:40:02,164 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:40:02,164 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:40:02,164 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:40:02,164 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:40:02,164 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:40:02,164 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:40:02,164 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:40:02,174 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-12-09 19:40:02,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 19:40:02,177 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:40:02,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:40:02,178 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:40:02,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:40:02,182 INFO L82 PathProgramCache]: Analyzing trace with hash -836543721, now seen corresponding path program 1 times [2020-12-09 19:40:02,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:40:02,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728285313] [2020-12-09 19:40:02,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:40:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:40:02,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:40:02,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728285313] [2020-12-09 19:40:02,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:40:02,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:40:02,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929983552] [2020-12-09 19:40:02,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 19:40:02,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:40:02,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 19:40:02,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 19:40:02,315 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-12-09 19:40:02,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:40:02,328 INFO L93 Difference]: Finished difference Result 59 states and 97 transitions. [2020-12-09 19:40:02,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 19:40:02,329 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-09 19:40:02,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:40:02,335 INFO L225 Difference]: With dead ends: 59 [2020-12-09 19:40:02,335 INFO L226 Difference]: Without dead ends: 28 [2020-12-09 19:40:02,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 19:40:02,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-09 19:40:02,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-09 19:40:02,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 19:40:02,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2020-12-09 19:40:02,362 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 7 [2020-12-09 19:40:02,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:40:02,362 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2020-12-09 19:40:02,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 19:40:02,362 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2020-12-09 19:40:02,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 19:40:02,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:40:02,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:40:02,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 19:40:02,363 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:40:02,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:40:02,364 INFO L82 PathProgramCache]: Analyzing trace with hash 2065220720, now seen corresponding path program 1 times [2020-12-09 19:40:02,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:40:02,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650103830] [2020-12-09 19:40:02,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:40:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:40:02,402 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:40:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:40:02,426 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:40:02,444 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 19:40:02,445 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 19:40:02,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 19:40:02,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:40:02 BoogieIcfgContainer [2020-12-09 19:40:02,468 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:40:02,468 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:40:02,468 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:40:02,469 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:40:02,469 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:40:02" (3/4) ... [2020-12-09 19:40:02,471 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 19:40:02,471 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:40:02,473 INFO L168 Benchmark]: Toolchain (without parser) took 995.43 ms. Allocated memory is still 102.8 MB. Free memory was 72.6 MB in the beginning and 66.1 MB in the end (delta: 6.5 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2020-12-09 19:40:02,473 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 102.8 MB. Free memory is still 80.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:40:02,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 194.35 ms. Allocated memory is still 102.8 MB. Free memory was 72.3 MB in the beginning and 60.7 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 19:40:02,474 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.81 ms. Allocated memory is still 102.8 MB. Free memory was 60.6 MB in the beginning and 58.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:40:02,475 INFO L168 Benchmark]: Boogie Preprocessor took 24.77 ms. Allocated memory is still 102.8 MB. Free memory was 58.7 MB in the beginning and 57.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:40:02,475 INFO L168 Benchmark]: RCFGBuilder took 390.08 ms. Allocated memory is still 102.8 MB. Free memory was 57.0 MB in the beginning and 51.4 MB in the end (delta: 5.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2020-12-09 19:40:02,476 INFO L168 Benchmark]: TraceAbstraction took 345.94 ms. Allocated memory is still 102.8 MB. Free memory was 50.9 MB in the beginning and 66.1 MB in the end (delta: -15.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:40:02,476 INFO L168 Benchmark]: Witness Printer took 2.96 ms. Allocated memory is still 102.8 MB. Free memory is still 66.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:40:02,478 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 102.8 MB. Free memory is still 80.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 194.35 ms. Allocated memory is still 102.8 MB. Free memory was 72.3 MB in the beginning and 60.7 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.81 ms. Allocated memory is still 102.8 MB. Free memory was 60.6 MB in the beginning and 58.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.77 ms. Allocated memory is still 102.8 MB. Free memory was 58.7 MB in the beginning and 57.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 390.08 ms. Allocated memory is still 102.8 MB. Free memory was 57.0 MB in the beginning and 51.4 MB in the end (delta: 5.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 345.94 ms. Allocated memory is still 102.8 MB. Free memory was 50.9 MB in the beginning and 66.1 MB in the end (delta: -15.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 2.96 ms. Allocated memory is still 102.8 MB. Free memory is still 66.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 124]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 123, overapproximation of someUnaryDOUBLEoperation at line 21, overapproximation of bitwiseAnd at line 48, overapproximation of someUnaryFLOAToperation at line 119, overapproximation of someBinaryArithmeticFLOAToperation at line 52. Possible FailurePath: [L17-L36] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; [L119] float x = -0.0f; [L39] float y, hi, lo, c, t; [L40] __int32_t k = 0, xsb, sx; [L41] __uint32_t hx; VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={7:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L44] ieee_float_shape_type gf_u; [L45] gf_u.value = (x) [L46] EXPR gf_u.word [L46] (sx) = gf_u.word [L48] xsb = (sx >> 31) & 1 [L49] hx = sx & 0x7fffffff VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={7:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L51] COND TRUE ((hx) > 0x7f800000L) [L52] return x + x; VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={7:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L120] float res = __ieee754_expf(x); [L123] COND TRUE res != 1.0f VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={7:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L124] reach_error() VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={7:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 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=30occurred 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 0.2.0-7b2dab5 [2020-12-09 19:40:03,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:40:03,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:40:03,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:40:03,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:40:03,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:40:03,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:40:03,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:40:03,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:40:03,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:40:03,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:40:04,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:40:04,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:40:04,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:40:04,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:40:04,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:40:04,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:40:04,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:40:04,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:40:04,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:40:04,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:40:04,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:40:04,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:40:04,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:40:04,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:40:04,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:40:04,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:40:04,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:40:04,022 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:40:04,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:40:04,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:40:04,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:40:04,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:40:04,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:40:04,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:40:04,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:40:04,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:40:04,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:40:04,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:40:04,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:40:04,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:40:04,032 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 19:40:04,049 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:40:04,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:40:04,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:40:04,050 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:40:04,050 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:40:04,051 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:40:04,051 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:40:04,051 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:40:04,051 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:40:04,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:40:04,052 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:40:04,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:40:04,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:40:04,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:40:04,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:40:04,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:40:04,052 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:40:04,052 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 19:40:04,053 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 19:40:04,053 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:40:04,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:40:04,053 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:40:04,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:40:04,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:40:04,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 19:40:04,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:40:04,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:40:04,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:40:04,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:40:04,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:40:04,054 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 19:40:04,054 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 19:40:04,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:40:04,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:40:04,055 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:40:04,055 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_b5401fd5-acd3-445a-9dd5-23da649b6d24/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 712005727f62c46a009e5aa995b5d1c386dc6cd1 [2020-12-09 19:40:04,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:40:04,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:40:04,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:40:04,313 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:40:04,314 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:40:04,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0832b.c [2020-12-09 19:40:04,356 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/data/593467e63/b3f0192573a7429da3057aa28de8bce1/FLAGa8999580b [2020-12-09 19:40:04,667 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:40:04,668 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/sv-benchmarks/c/float-newlib/float_req_bl_0832b.c [2020-12-09 19:40:04,674 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/data/593467e63/b3f0192573a7429da3057aa28de8bce1/FLAGa8999580b [2020-12-09 19:40:05,092 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/data/593467e63/b3f0192573a7429da3057aa28de8bce1 [2020-12-09 19:40:05,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:40:05,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:40:05,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:40:05,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:40:05,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:40:05,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:40:05" (1/1) ... [2020-12-09 19:40:05,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4336d746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:05, skipping insertion in model container [2020-12-09 19:40:05,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:40:05" (1/1) ... [2020-12-09 19:40:05,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:40:05,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:40:05,257 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/sv-benchmarks/c/float-newlib/float_req_bl_0832b.c[3181,3194] [2020-12-09 19:40:05,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:40:05,273 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:40:05,306 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/sv-benchmarks/c/float-newlib/float_req_bl_0832b.c[3181,3194] [2020-12-09 19:40:05,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:40:05,321 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:40:05,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:05 WrapperNode [2020-12-09 19:40:05,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:40:05,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:40:05,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:40:05,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:40:05,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:05" (1/1) ... [2020-12-09 19:40:05,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:05" (1/1) ... [2020-12-09 19:40:05,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:40:05,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:40:05,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:40:05,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:40:05,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:05" (1/1) ... [2020-12-09 19:40:05,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:05" (1/1) ... [2020-12-09 19:40:05,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:05" (1/1) ... [2020-12-09 19:40:05,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:05" (1/1) ... [2020-12-09 19:40:05,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:05" (1/1) ... [2020-12-09 19:40:05,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:05" (1/1) ... [2020-12-09 19:40:05,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:05" (1/1) ... [2020-12-09 19:40:05,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:40:05,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:40:05,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:40:05,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:40:05,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:40:05,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2020-12-09 19:40:05,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 19:40:05,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:40:05,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-12-09 19:40:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 19:40:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:40:05,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:40:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-12-09 19:40:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 19:40:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 19:40:15,056 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:40:15,056 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-09 19:40:15,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:40:15 BoogieIcfgContainer [2020-12-09 19:40:15,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:40:15,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:40:15,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:40:15,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:40:15,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:40:05" (1/3) ... [2020-12-09 19:40:15,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@890904d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:40:15, skipping insertion in model container [2020-12-09 19:40:15,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:40:05" (2/3) ... [2020-12-09 19:40:15,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@890904d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:40:15, skipping insertion in model container [2020-12-09 19:40:15,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:40:15" (3/3) ... [2020-12-09 19:40:15,063 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832b.c [2020-12-09 19:40:15,073 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:40:15,076 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 19:40:15,083 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 19:40:15,098 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:40:15,098 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:40:15,098 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:40:15,098 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:40:15,098 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:40:15,099 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:40:15,099 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:40:15,099 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:40:15,107 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-12-09 19:40:15,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 19:40:15,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:40:15,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:40:15,110 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:40:15,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:40:15,114 INFO L82 PathProgramCache]: Analyzing trace with hash 354246130, now seen corresponding path program 1 times [2020-12-09 19:40:15,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:40:15,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532544987] [2020-12-09 19:40:15,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 19:40:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:40:15,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 19:40:15,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:40:15,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:40:15,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:40:15,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532544987] [2020-12-09 19:40:15,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:40:15,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:40:15,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645400241] [2020-12-09 19:40:15,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 19:40:15,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:40:15,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 19:40:15,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 19:40:15,547 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2020-12-09 19:40:15,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:40:15,559 INFO L93 Difference]: Finished difference Result 70 states and 112 transitions. [2020-12-09 19:40:15,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 19:40:15,560 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 19:40:15,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:40:15,566 INFO L225 Difference]: With dead ends: 70 [2020-12-09 19:40:15,566 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 19:40:15,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 19:40:15,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 19:40:15,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-09 19:40:15,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 19:40:15,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2020-12-09 19:40:15,589 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 8 [2020-12-09 19:40:15,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:40:15,589 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2020-12-09 19:40:15,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 19:40:15,589 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2020-12-09 19:40:15,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 19:40:15,590 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:40:15,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:40:15,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 19:40:15,791 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:40:15,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:40:15,792 INFO L82 PathProgramCache]: Analyzing trace with hash 325000437, now seen corresponding path program 1 times [2020-12-09 19:40:15,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:40:15,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484364581] [2020-12-09 19:40:15,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 19:40:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:40:16,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 19:40:16,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:40:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:40:16,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:40:16,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484364581] [2020-12-09 19:40:16,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:40:16,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 19:40:16,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330156705] [2020-12-09 19:40:16,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:40:16,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:40:16,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:40:16,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:40:16,314 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand 5 states. [2020-12-09 19:40:23,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:40:23,466 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-12-09 19:40:23,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 19:40:23,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-09 19:40:23,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:40:23,540 INFO L225 Difference]: With dead ends: 54 [2020-12-09 19:40:23,540 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 19:40:23,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 19:40:23,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 19:40:23,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2020-12-09 19:40:23,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 19:40:23,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-12-09 19:40:23,544 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 9 [2020-12-09 19:40:23,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:40:23,545 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-12-09 19:40:23,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:40:23,545 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-12-09 19:40:23,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 19:40:23,545 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:40:23,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:40:23,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 19:40:23,748 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:40:23,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:40:23,750 INFO L82 PathProgramCache]: Analyzing trace with hash -239562945, now seen corresponding path program 1 times [2020-12-09 19:40:23,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:40:23,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103916128] [2020-12-09 19:40:23,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 19:40:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:40:24,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 19:40:24,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:40:24,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:40:24,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:40:24,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103916128] [2020-12-09 19:40:24,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:40:24,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 19:40:24,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744697108] [2020-12-09 19:40:24,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 19:40:24,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:40:24,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 19:40:24,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 19:40:24,385 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 6 states. [2020-12-09 19:40:40,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:40:40,139 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-12-09 19:40:40,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 19:40:40,140 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-09 19:40:40,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:40:40,141 INFO L225 Difference]: With dead ends: 33 [2020-12-09 19:40:40,141 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 19:40:40,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 19:40:40,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 19:40:40,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-09 19:40:40,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 19:40:40,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-12-09 19:40:40,144 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 15 [2020-12-09 19:40:40,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:40:40,145 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-12-09 19:40:40,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 19:40:40,145 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-12-09 19:40:40,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 19:40:40,145 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:40:40,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:40:40,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 19:40:40,347 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:40:40,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:40:40,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1708303706, now seen corresponding path program 1 times [2020-12-09 19:40:40,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:40:40,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487383150] [2020-12-09 19:40:40,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 19:40:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:40:41,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 19:40:41,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:40:41,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:40:41,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:40:41,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487383150] [2020-12-09 19:40:41,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:40:41,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:40:41,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38254019] [2020-12-09 19:40:41,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:40:41,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:40:41,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:40:41,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:40:41,618 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 4 states. [2020-12-09 19:40:41,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:40:41,642 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-12-09 19:40:41,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:40:41,643 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-09 19:40:41,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:40:41,644 INFO L225 Difference]: With dead ends: 29 [2020-12-09 19:40:41,644 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 19:40:41,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:40:41,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 19:40:41,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 19:40:41,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 19:40:41,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 19:40:41,645 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-09 19:40:41,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:40:41,645 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 19:40:41,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:40:41,645 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 19:40:41,645 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 19:40:41,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 19:40:41,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 19:40:42,002 INFO L262 CegarLoopResult]: For program point L60(lines 60 75) no Hoare annotation was computed. [2020-12-09 19:40:42,002 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 19:40:42,002 INFO L262 CegarLoopResult]: For program point L61(lines 61 70) no Hoare annotation was computed. [2020-12-09 19:40:42,002 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 19:40:42,003 INFO L262 CegarLoopResult]: For program point L61-2(lines 61 70) no Hoare annotation was computed. [2020-12-09 19:40:42,003 INFO L262 CegarLoopResult]: For program point L53(lines 53 54) no Hoare annotation was computed. [2020-12-09 19:40:42,003 INFO L262 CegarLoopResult]: For program point L86-1(lines 86 90) no Hoare annotation was computed. [2020-12-09 19:40:42,003 INFO L258 CegarLoopResult]: At program point L86-2(lines 86 90) the Hoare annotation is: false [2020-12-09 19:40:42,003 INFO L265 CegarLoopResult]: At program point L128(lines 113 129) the Hoare annotation is: true [2020-12-09 19:40:42,003 INFO L262 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-12-09 19:40:42,003 INFO L262 CegarLoopResult]: For program point L54-2(line 54) no Hoare annotation was computed. [2020-12-09 19:40:42,003 INFO L262 CegarLoopResult]: For program point L104(lines 104 108) no Hoare annotation was computed. [2020-12-09 19:40:42,003 INFO L262 CegarLoopResult]: For program point L104-1(lines 97 110) no Hoare annotation was computed. [2020-12-09 19:40:42,003 INFO L262 CegarLoopResult]: For program point L104-2(lines 104 108) no Hoare annotation was computed. [2020-12-09 19:40:42,003 INFO L262 CegarLoopResult]: For program point L55(lines 55 56) no Hoare annotation was computed. [2020-12-09 19:40:42,003 INFO L262 CegarLoopResult]: For program point L80(lines 80 83) no Hoare annotation was computed. [2020-12-09 19:40:42,004 INFO L262 CegarLoopResult]: For program point L72(lines 72 75) no Hoare annotation was computed. [2020-12-09 19:40:42,004 INFO L262 CegarLoopResult]: For program point L72-2(lines 60 75) no Hoare annotation was computed. [2020-12-09 19:40:42,004 INFO L262 CegarLoopResult]: For program point L73(lines 73 74) no Hoare annotation was computed. [2020-12-09 19:40:42,004 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 19:40:42,004 INFO L262 CegarLoopResult]: For program point L123(lines 123 126) no Hoare annotation was computed. [2020-12-09 19:40:42,004 INFO L262 CegarLoopResult]: For program point L57(lines 57 58) no Hoare annotation was computed. [2020-12-09 19:40:42,004 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 124) no Hoare annotation was computed. [2020-12-09 19:40:42,004 INFO L262 CegarLoopResult]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2020-12-09 19:40:42,004 INFO L258 CegarLoopResult]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2020-12-09 19:40:42,004 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 19:40:42,004 INFO L262 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-12-09 19:40:42,004 INFO L262 CegarLoopResult]: For program point L91(lines 91 95) no Hoare annotation was computed. [2020-12-09 19:40:42,004 INFO L262 CegarLoopResult]: For program point L91-1(lines 84 97) no Hoare annotation was computed. [2020-12-09 19:40:42,004 INFO L262 CegarLoopResult]: For program point L91-2(lines 91 95) no Hoare annotation was computed. [2020-12-09 19:40:42,005 INFO L262 CegarLoopResult]: For program point L84(lines 84 110) no Hoare annotation was computed. [2020-12-09 19:40:42,005 INFO L262 CegarLoopResult]: For program point L51(lines 51 52) no Hoare annotation was computed. [2020-12-09 19:40:42,005 INFO L258 CegarLoopResult]: At program point L109(lines 38 111) the Hoare annotation is: (let ((.cse1 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))) (.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start___ieee754_expf_~x .cse0) (= currentRoundingMode roundNearestTiesToEven) (= ~one_exp~0 .cse1) (= (fp.add currentRoundingMode .cse1 .cse0) |ULTIMATE.start___ieee754_expf_#res|))) [2020-12-09 19:40:42,005 INFO L262 CegarLoopResult]: For program point L43-1(lines 43 47) no Hoare annotation was computed. [2020-12-09 19:40:42,005 INFO L258 CegarLoopResult]: At program point L43-2(lines 43 47) the Hoare annotation is: (and (= ULTIMATE.start___ieee754_expf_~x (fp.neg (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven) (= ~one_exp~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))) (= ~huge_exp~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0)))) [2020-12-09 19:40:42,005 INFO L262 CegarLoopResult]: For program point L43-3(lines 43 47) no Hoare annotation was computed. [2020-12-09 19:40:42,013 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:40:42,016 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:40:42,017 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:40:42,018 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:40:42,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:40:42 BoogieIcfgContainer [2020-12-09 19:40:42,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:40:42,020 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:40:42,020 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:40:42,020 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:40:42,020 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:40:15" (3/4) ... [2020-12-09 19:40:42,023 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 19:40:42,031 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-09 19:40:42,032 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-09 19:40:42,032 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 19:40:42,032 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 19:40:42,049 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))) && ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) == \result [2020-12-09 19:40:42,076 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b5401fd5-acd3-445a-9dd5-23da649b6d24/bin/utaipan/witness.graphml [2020-12-09 19:40:42,076 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:40:42,078 INFO L168 Benchmark]: Toolchain (without parser) took 36981.30 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 31.7 MB in the beginning and 29.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2020-12-09 19:40:42,078 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 46.1 MB. Free memory was 28.3 MB in the beginning and 28.2 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:40:42,078 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.97 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 31.5 MB in the beginning and 37.6 MB in the end (delta: -6.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:40:42,079 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.96 ms. Allocated memory is still 56.6 MB. Free memory was 37.6 MB in the beginning and 35.7 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:40:42,079 INFO L168 Benchmark]: Boogie Preprocessor took 28.90 ms. Allocated memory is still 56.6 MB. Free memory was 35.7 MB in the beginning and 33.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:40:42,079 INFO L168 Benchmark]: RCFGBuilder took 9673.25 ms. Allocated memory is still 56.6 MB. Free memory was 33.4 MB in the beginning and 38.3 MB in the end (delta: -4.9 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2020-12-09 19:40:42,079 INFO L168 Benchmark]: TraceAbstraction took 26960.58 ms. Allocated memory is still 56.6 MB. Free memory was 38.0 MB in the beginning and 35.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2020-12-09 19:40:42,080 INFO L168 Benchmark]: Witness Printer took 56.77 ms. Allocated memory is still 56.6 MB. Free memory was 35.6 MB in the beginning and 29.3 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 19:40:42,081 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 46.1 MB. Free memory was 28.3 MB in the beginning and 28.2 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 224.97 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 31.5 MB in the beginning and 37.6 MB in the end (delta: -6.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.96 ms. Allocated memory is still 56.6 MB. Free memory was 37.6 MB in the beginning and 35.7 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.90 ms. Allocated memory is still 56.6 MB. Free memory was 35.7 MB in the beginning and 33.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 9673.25 ms. Allocated memory is still 56.6 MB. Free memory was 33.4 MB in the beginning and 38.3 MB in the end (delta: -4.9 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 26960.58 ms. Allocated memory is still 56.6 MB. Free memory was 38.0 MB in the beginning and 35.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. * Witness Printer took 56.77 ms. Allocated memory is still 56.6 MB. Free memory was 35.6 MB in the beginning and 29.3 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 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 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 124]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 38]: Loop Invariant [2020-12-09 19:40:42,085 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:40:42,086 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))) && ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) == \result - InvariantResult [Line: 43]: Loop Invariant [2020-12-09 19:40:42,086 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:40:42,086 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))) && huge_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 26.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 23.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 102 SDtfs, 64 SDslu, 105 SDs, 0 SdLazy, 38 SolverSat, 5 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 22.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 51 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 45 ConstructedInterpolants, 1 QuantifiedInterpolants, 6985 SizeOfPredicates, 19 NumberOfNonLiveVariables, 307 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...