./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/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 6a2ce6cad1ff26c462bd542dafb3ac3798055daa .................................................................................................................................................................................................................................................................................................................... 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_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/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 6a2ce6cad1ff26c462bd542dafb3ac3798055daa ........................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:56:01,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:56:01,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:56:01,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:56:01,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:56:01,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:56:01,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:56:01,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:56:01,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:56:01,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:56:01,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:56:01,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:56:01,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:56:01,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:56:01,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:56:01,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:56:01,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:56:01,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:56:01,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:56:01,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:56:01,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:56:01,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:56:01,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:56:01,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:56:01,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:56:01,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:56:01,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:56:01,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:56:01,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:56:01,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:56:01,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:56:01,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:56:01,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:56:01,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:56:01,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:56:01,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:56:01,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:56:01,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:56:01,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:56:01,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:56:01,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:56:01,837 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:56:01,887 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:56:01,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:56:01,893 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:56:01,893 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:56:01,893 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:56:01,894 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:56:01,894 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:56:01,894 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:56:01,895 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:56:01,895 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:56:01,896 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:56:01,897 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:56:01,897 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:56:01,897 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:56:01,898 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:56:01,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:56:01,899 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:56:01,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:56:01,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:56:01,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:56:01,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:56:01,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:56:01,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:56:01,901 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:56:01,901 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:56:01,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:56:01,902 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:56:01,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:56:01,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:56:01,905 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:56:01,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:56:01,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:01,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:56:01,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:56:01,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:56:01,907 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:56:01,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:56:01,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:56:01,908 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:56:01,908 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:56:01,908 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_ac2f01f3-8842-469d-8036-73e067d8e26a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a2ce6cad1ff26c462bd542dafb3ac3798055daa [2020-11-22 12:56:02,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:56:02,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:56:02,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:56:02,247 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:56:02,248 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:56:02,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-11-22 12:56:02,356 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/data/ce2f3d316/75b5de1ee3fb492daae202d7c9cc2ab2/FLAG6209b217c [2020-11-22 12:56:02,935 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:56:02,936 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-11-22 12:56:02,949 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/data/ce2f3d316/75b5de1ee3fb492daae202d7c9cc2ab2/FLAG6209b217c [2020-11-22 12:56:03,310 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/data/ce2f3d316/75b5de1ee3fb492daae202d7c9cc2ab2 [2020-11-22 12:56:03,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:56:03,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:56:03,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:03,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:56:03,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:56:03,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:03" (1/1) ... [2020-11-22 12:56:03,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6818875f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:03, skipping insertion in model container [2020-11-22 12:56:03,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:03" (1/1) ... [2020-11-22 12:56:03,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:56:03,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:56:03,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:03,625 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:56:03,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:03,679 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:56:03,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:03 WrapperNode [2020-11-22 12:56:03,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:03,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:03,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:56:03,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:56:03,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:03" (1/1) ... [2020-11-22 12:56:03,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:03" (1/1) ... [2020-11-22 12:56:03,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:03,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:56:03,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:56:03,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:56:03,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:03" (1/1) ... [2020-11-22 12:56:03,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:03" (1/1) ... [2020-11-22 12:56:03,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:03" (1/1) ... [2020-11-22 12:56:03,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:03" (1/1) ... [2020-11-22 12:56:03,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:03" (1/1) ... [2020-11-22 12:56:03,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:03" (1/1) ... [2020-11-22 12:56:03,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:03" (1/1) ... [2020-11-22 12:56:03,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:56:03,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:56:03,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:56:03,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:56:03,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:03,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:56:03,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:56:03,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-22 12:56:03,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 12:56:03,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-22 12:56:03,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:56:03,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:56:03,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 12:56:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:56:04,520 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:56:04,520 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-22 12:56:04,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:04 BoogieIcfgContainer [2020-11-22 12:56:04,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:56:04,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:56:04,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:56:04,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:56:04,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:56:03" (1/3) ... [2020-11-22 12:56:04,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687957c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:04, skipping insertion in model container [2020-11-22 12:56:04,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:03" (2/3) ... [2020-11-22 12:56:04,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687957c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:04, skipping insertion in model container [2020-11-22 12:56:04,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:04" (3/3) ... [2020-11-22 12:56:04,533 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2020-11-22 12:56:04,544 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:56:04,548 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:56:04,559 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:56:04,581 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:56:04,582 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:56:04,582 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:56:04,582 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:56:04,582 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:56:04,582 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:56:04,582 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:56:04,583 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:56:04,597 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-22 12:56:04,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:56:04,602 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:04,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:04,604 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:04,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:04,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1956391417, now seen corresponding path program 1 times [2020-11-22 12:56:04,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:04,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855742347] [2020-11-22 12:56:04,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:04,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855742347] [2020-11-22 12:56:04,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:04,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:56:04,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834083652] [2020-11-22 12:56:04,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:56:04,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:04,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:56:04,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:56:04,923 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-22 12:56:04,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:04,943 INFO L93 Difference]: Finished difference Result 57 states and 91 transitions. [2020-11-22 12:56:04,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:56:04,944 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-22 12:56:04,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:04,954 INFO L225 Difference]: With dead ends: 57 [2020-11-22 12:56:04,954 INFO L226 Difference]: Without dead ends: 27 [2020-11-22 12:56:04,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:56:04,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-22 12:56:05,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-22 12:56:05,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-22 12:56:05,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-11-22 12:56:05,010 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 10 [2020-11-22 12:56:05,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:05,010 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-11-22 12:56:05,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:56:05,011 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-11-22 12:56:05,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 12:56:05,012 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:05,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:05,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:56:05,013 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:05,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:05,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1481624472, now seen corresponding path program 1 times [2020-11-22 12:56:05,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:05,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785135142] [2020-11-22 12:56:05,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:56:05,148 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:56:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:56:05,269 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:56:05,300 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 12:56:05,300 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:56:05,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:56:05,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:56:05 BoogieIcfgContainer [2020-11-22 12:56:05,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:56:05,351 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:56:05,352 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:56:05,352 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:56:05,353 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:04" (3/4) ... [2020-11-22 12:56:05,356 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 12:56:05,356 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:56:05,359 INFO L168 Benchmark]: Toolchain (without parser) took 2042.67 ms. Allocated memory is still 96.5 MB. Free memory was 63.6 MB in the beginning and 57.9 MB in the end (delta: 5.7 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:05,360 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory was 73.6 MB in the beginning and 73.6 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:05,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.65 ms. Allocated memory is still 96.5 MB. Free memory was 63.5 MB in the beginning and 72.8 MB in the end (delta: -9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:05,362 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.77 ms. Allocated memory is still 96.5 MB. Free memory was 72.7 MB in the beginning and 70.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:05,363 INFO L168 Benchmark]: Boogie Preprocessor took 39.11 ms. Allocated memory is still 96.5 MB. Free memory was 70.7 MB in the beginning and 69.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:05,364 INFO L168 Benchmark]: RCFGBuilder took 754.15 ms. Allocated memory is still 96.5 MB. Free memory was 69.1 MB in the beginning and 39.8 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:05,365 INFO L168 Benchmark]: TraceAbstraction took 826.39 ms. Allocated memory is still 96.5 MB. Free memory was 39.3 MB in the beginning and 58.4 MB in the end (delta: -19.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:05,365 INFO L168 Benchmark]: Witness Printer took 5.20 ms. Allocated memory is still 96.5 MB. Free memory was 58.4 MB in the beginning and 57.9 MB in the end (delta: 541.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:05,370 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory was 73.6 MB in the beginning and 73.6 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 352.65 ms. Allocated memory is still 96.5 MB. Free memory was 63.5 MB in the beginning and 72.8 MB in the end (delta: -9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.77 ms. Allocated memory is still 96.5 MB. Free memory was 72.7 MB in the beginning and 70.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.11 ms. Allocated memory is still 96.5 MB. Free memory was 70.7 MB in the beginning and 69.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 754.15 ms. Allocated memory is still 96.5 MB. Free memory was 69.1 MB in the beginning and 39.8 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 826.39 ms. Allocated memory is still 96.5 MB. Free memory was 39.3 MB in the beginning and 58.4 MB in the end (delta: -19.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.20 ms. Allocated memory is still 96.5 MB. Free memory was 58.4 MB in the beginning and 57.9 MB in the end (delta: 541.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 75, overapproximation of someBinaryArithmeticFLOAToperation at line 82, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L13] static const float one_modf = 1.0; [L82] float x = 0.0f / 0.0f; [L83] float iptr; [L16] __int32_t i0, j0; [L17] __uint32_t i; VAL [one_modf=1] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [one_modf=1] [L24] COND TRUE j0 < 23 VAL [one_modf=1] [L25] COND TRUE j0 < 0 VAL [one_modf=1] [L27] ieee_float_shape_type sf_u; [L28] sf_u.word = (i0 & 0x80000000) [L29] EXPR sf_u.value [L29] (*iptr) = sf_u.value [L31] return x; VAL [one_modf=1] [L84] float res = modf_float(x, &iptr); [L87] EXPR \read(iptr) [L75] return x != x; [L87] isnan_float(iptr) && !isnan_float(res) [L75] return x != x; [L87] isnan_float(iptr) && !isnan_float(res) VAL [one_modf=1] [L87] COND TRUE isnan_float(iptr) && !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1210.c", 3, "reach_error") VAL [one_modf=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 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=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:56:08,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:56:08,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:56:08,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:56:08,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:56:08,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:56:08,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:56:08,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:56:08,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:56:08,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:56:08,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:56:08,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:56:08,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:56:08,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:56:08,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:56:08,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:56:08,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:56:08,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:56:08,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:56:08,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:56:08,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:56:08,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:56:08,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:56:08,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:56:08,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:56:08,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:56:08,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:56:08,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:56:08,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:56:08,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:56:08,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:56:08,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:56:08,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:56:08,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:56:08,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:56:08,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:56:08,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:56:08,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:56:08,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:56:08,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:56:08,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:56:08,130 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 12:56:08,178 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:56:08,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:56:08,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:56:08,180 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:56:08,180 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:56:08,180 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:56:08,181 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:56:08,181 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:56:08,181 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:56:08,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:56:08,183 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:56:08,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:56:08,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:56:08,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:56:08,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:56:08,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:56:08,185 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:56:08,185 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 12:56:08,185 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 12:56:08,185 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:56:08,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:56:08,186 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:56:08,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:56:08,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:56:08,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 12:56:08,187 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:56:08,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:56:08,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:08,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:56:08,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:56:08,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:56:08,188 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 12:56:08,188 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 12:56:08,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:56:08,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:56:08,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:56:08,189 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_ac2f01f3-8842-469d-8036-73e067d8e26a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a2ce6cad1ff26c462bd542dafb3ac3798055daa [2020-11-22 12:56:08,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:56:08,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:56:08,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:56:08,552 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:56:08,555 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:56:08,556 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-11-22 12:56:08,630 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/data/0cb4299a7/10d74dbdcd0243cbb5ce4d4ce67c03d3/FLAG8234abfef [2020-11-22 12:56:09,165 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:56:09,168 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-11-22 12:56:09,176 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/data/0cb4299a7/10d74dbdcd0243cbb5ce4d4ce67c03d3/FLAG8234abfef [2020-11-22 12:56:09,534 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/data/0cb4299a7/10d74dbdcd0243cbb5ce4d4ce67c03d3 [2020-11-22 12:56:09,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:56:09,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:56:09,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:09,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:56:09,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:56:09,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:09" (1/1) ... [2020-11-22 12:56:09,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c3c0113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:09, skipping insertion in model container [2020-11-22 12:56:09,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:09" (1/1) ... [2020-11-22 12:56:09,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:56:09,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:56:09,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:09,779 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:56:09,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:09,858 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:56:09,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:09 WrapperNode [2020-11-22 12:56:09,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:09,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:09,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:56:09,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:56:09,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:09" (1/1) ... [2020-11-22 12:56:09,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:09" (1/1) ... [2020-11-22 12:56:09,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:09,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:56:09,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:56:09,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:56:09,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:09" (1/1) ... [2020-11-22 12:56:09,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:09" (1/1) ... [2020-11-22 12:56:09,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:09" (1/1) ... [2020-11-22 12:56:09,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:09" (1/1) ... [2020-11-22 12:56:09,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:09" (1/1) ... [2020-11-22 12:56:10,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:09" (1/1) ... [2020-11-22 12:56:10,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:09" (1/1) ... [2020-11-22 12:56:10,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:56:10,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:56:10,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:56:10,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:56:10,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 12:56:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:56:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-22 12:56:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-22 12:56:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:56:10,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:56:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-22 12:56:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-22 12:56:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:56:10,844 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:56:10,844 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-22 12:56:10,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:10 BoogieIcfgContainer [2020-11-22 12:56:10,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:56:10,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:56:10,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:56:10,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:56:10,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:56:09" (1/3) ... [2020-11-22 12:56:10,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fed1a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:10, skipping insertion in model container [2020-11-22 12:56:10,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:09" (2/3) ... [2020-11-22 12:56:10,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fed1a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:10, skipping insertion in model container [2020-11-22 12:56:10,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:10" (3/3) ... [2020-11-22 12:56:10,854 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2020-11-22 12:56:10,865 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:56:10,869 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:56:10,880 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:56:10,906 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:56:10,906 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:56:10,906 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:56:10,906 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:56:10,907 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:56:10,907 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:56:10,907 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:56:10,907 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:56:10,921 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-11-22 12:56:10,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 12:56:10,933 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:10,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:10,934 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:10,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:10,941 INFO L82 PathProgramCache]: Analyzing trace with hash -556426464, now seen corresponding path program 1 times [2020-11-22 12:56:10,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:10,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634000339] [2020-11-22 12:56:10,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:11,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 12:56:11,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:11,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:11,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:11,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634000339] [2020-11-22 12:56:11,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:11,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 12:56:11,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560848855] [2020-11-22 12:56:11,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:56:11,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:11,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:56:11,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:56:11,258 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2020-11-22 12:56:11,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:11,289 INFO L93 Difference]: Finished difference Result 67 states and 103 transitions. [2020-11-22 12:56:11,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:56:11,290 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-22 12:56:11,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:11,300 INFO L225 Difference]: With dead ends: 67 [2020-11-22 12:56:11,300 INFO L226 Difference]: Without dead ends: 31 [2020-11-22 12:56:11,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:56:11,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-22 12:56:11,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-22 12:56:11,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-22 12:56:11,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-11-22 12:56:11,340 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13 [2020-11-22 12:56:11,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:11,341 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-11-22 12:56:11,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:56:11,341 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-11-22 12:56:11,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-22 12:56:11,342 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:11,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:11,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 12:56:11,558 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:11,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:11,560 INFO L82 PathProgramCache]: Analyzing trace with hash -56818241, now seen corresponding path program 1 times [2020-11-22 12:56:11,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:11,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214140250] [2020-11-22 12:56:11,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:11,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-22 12:56:11,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:11,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:11,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:12,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:12,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214140250] [2020-11-22 12:56:12,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:12,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-22 12:56:12,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587416469] [2020-11-22 12:56:12,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 12:56:12,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:12,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 12:56:12,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:56:12,030 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 8 states. [2020-11-22 12:56:12,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:12,447 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-11-22 12:56:12,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:56:12,452 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-22 12:56:12,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:12,453 INFO L225 Difference]: With dead ends: 38 [2020-11-22 12:56:12,453 INFO L226 Difference]: Without dead ends: 18 [2020-11-22 12:56:12,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-22 12:56:12,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-22 12:56:12,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-22 12:56:12,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-22 12:56:12,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-22 12:56:12,459 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2020-11-22 12:56:12,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:12,459 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-22 12:56:12,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 12:56:12,460 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-22 12:56:12,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 12:56:12,460 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:12,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:12,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 12:56:12,685 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:12,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:12,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1951048762, now seen corresponding path program 1 times [2020-11-22 12:56:12,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:12,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61615442] [2020-11-22 12:56:12,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:12,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:56:12,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:12,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:12,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:12,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61615442] [2020-11-22 12:56:12,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:12,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 12:56:12,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542390637] [2020-11-22 12:56:12,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:56:12,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:12,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:56:12,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:56:12,882 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 3 states. [2020-11-22 12:56:12,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:12,913 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2020-11-22 12:56:12,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:56:12,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-22 12:56:12,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:12,914 INFO L225 Difference]: With dead ends: 21 [2020-11-22 12:56:12,914 INFO L226 Difference]: Without dead ends: 18 [2020-11-22 12:56:12,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:56:12,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-22 12:56:12,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-22 12:56:12,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-22 12:56:12,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-11-22 12:56:12,919 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2020-11-22 12:56:12,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:12,919 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-11-22 12:56:12,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:56:12,920 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-11-22 12:56:12,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 12:56:12,920 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:12,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:13,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 12:56:13,134 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:13,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:13,135 INFO L82 PathProgramCache]: Analyzing trace with hash 352844637, now seen corresponding path program 1 times [2020-11-22 12:56:13,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:13,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091206364] [2020-11-22 12:56:13,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:56:13,339 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:56:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:56:13,581 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:56:13,636 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 12:56:13,637 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:56:13,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 12:56:13,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:56:13 BoogieIcfgContainer [2020-11-22 12:56:13,891 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:56:13,892 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:56:13,892 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:56:13,892 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:56:13,892 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:10" (3/4) ... [2020-11-22 12:56:13,894 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 12:56:13,953 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ac2f01f3-8842-469d-8036-73e067d8e26a/bin/utaipan/witness.graphml [2020-11-22 12:56:13,953 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:56:13,960 INFO L168 Benchmark]: Toolchain (without parser) took 4420.35 ms. Allocated memory was 50.3 MB in the beginning and 73.4 MB in the end (delta: 23.1 MB). Free memory was 27.8 MB in the beginning and 34.2 MB in the end (delta: -6.5 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:13,960 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 50.3 MB. Free memory was 32.9 MB in the beginning and 32.8 MB in the end (delta: 37.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:13,961 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.24 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.6 MB in the beginning and 45.1 MB in the end (delta: -17.5 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:13,961 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.95 ms. Allocated memory is still 60.8 MB. Free memory was 45.1 MB in the beginning and 43.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:13,962 INFO L168 Benchmark]: Boogie Preprocessor took 69.69 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 41.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:13,963 INFO L168 Benchmark]: RCFGBuilder took 817.40 ms. Allocated memory is still 60.8 MB. Free memory was 41.3 MB in the beginning and 33.6 MB in the end (delta: 7.7 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:13,963 INFO L168 Benchmark]: TraceAbstraction took 3044.46 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 33.1 MB in the beginning and 37.2 MB in the end (delta: -4.2 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:13,964 INFO L168 Benchmark]: Witness Printer took 66.14 ms. Allocated memory is still 73.4 MB. Free memory was 36.9 MB in the beginning and 34.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:13,966 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 50.3 MB. Free memory was 32.9 MB in the beginning and 32.8 MB in the end (delta: 37.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.24 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.6 MB in the beginning and 45.1 MB in the end (delta: -17.5 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.95 ms. Allocated memory is still 60.8 MB. Free memory was 45.1 MB in the beginning and 43.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.69 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 41.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 817.40 ms. Allocated memory is still 60.8 MB. Free memory was 41.3 MB in the beginning and 33.6 MB in the end (delta: 7.7 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3044.46 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 33.1 MB in the beginning and 37.2 MB in the end (delta: -4.2 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Witness Printer took 66.14 ms. Allocated memory is still 73.4 MB. Free memory was 36.9 MB in the beginning and 34.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] static const float one_modf = 1.0; VAL [one_modf=1.0] [L82] float x = 0.0f / 0.0f; [L83] float iptr; [L16] __int32_t i0, j0; [L17] __uint32_t i; VAL [one_modf=1.0] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [one_modf=1.0] [L24] COND FALSE !(j0 < 23) [L58] __uint32_t ix; [L59] *iptr = x * one_modf VAL [one_modf=1.0] [L61] ieee_float_shape_type gf_u; [L62] gf_u.value = (x) [L63] EXPR gf_u.word [L63] (ix) = gf_u.word [L66] ieee_float_shape_type sf_u; [L67] sf_u.word = (ix & 0x80000000) [L68] EXPR sf_u.value [L68] (x) = sf_u.value [L70] return x; VAL [one_modf=1.0] [L84] float res = modf_float(x, &iptr); [L87] EXPR \read(iptr) [L75] return x != x; VAL [one_modf=1.0] [L87] isnan_float(iptr) && !isnan_float(res) [L75] return x != x; VAL [one_modf=1.0] [L87] isnan_float(iptr) && !isnan_float(res) VAL [one_modf=1.0] [L87] COND TRUE isnan_float(iptr) && !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1210.c", 3, "reach_error") VAL [one_modf=1.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 46 SDslu, 34 SDs, 0 SdLazy, 17 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 82 ConstructedInterpolants, 5 QuantifiedInterpolants, 2476 SizeOfPredicates, 8 NumberOfNonLiveVariables, 204 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...