./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.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_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/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 2c4d19baf0429684b688f90d909ef640d9fb6537 ...................................................................................................................................................................................................................................................................................................... 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_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/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 2c4d19baf0429684b688f90d909ef640d9fb6537 ............................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:05:26,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:26,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:26,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:26,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:26,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:26,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:26,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:26,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:26,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:26,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:26,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:26,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:26,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:26,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:26,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:26,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:26,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:26,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:26,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:26,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:26,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:26,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:26,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:26,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:26,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:26,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:26,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:26,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:26,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:26,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:26,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:26,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:26,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:26,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:26,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:26,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:26,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:26,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:26,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:26,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:26,865 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:05:26,907 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:26,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:26,909 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:26,909 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:26,909 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:26,909 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:26,909 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:05:26,910 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:26,910 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:26,910 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:05:26,911 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:05:26,911 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:26,911 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:05:26,912 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:05:26,912 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:05:26,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:26,913 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:05:26,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:05:26,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:05:26,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:26,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:05:26,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:26,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:05:26,914 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:05:26,914 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:05:26,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:05:26,915 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:26,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:05:26,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:26,915 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:26,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:26,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:26,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:26,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:26,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:05:26,917 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:05:26,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:05:26,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:05:26,917 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:26,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:26,918 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_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c4d19baf0429684b688f90d909ef640d9fb6537 [2020-11-22 13:05:27,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:27,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:27,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:27,192 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:27,192 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:27,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2020-11-22 13:05:27,260 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/data/f4793ae47/4acfb99cca7f4f42920078028b77ac52/FLAG59b6f549c [2020-11-22 13:05:27,748 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:27,752 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2020-11-22 13:05:27,770 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/data/f4793ae47/4acfb99cca7f4f42920078028b77ac52/FLAG59b6f549c [2020-11-22 13:05:28,100 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/data/f4793ae47/4acfb99cca7f4f42920078028b77ac52 [2020-11-22 13:05:28,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:28,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:28,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:28,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:28,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:28,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:28" (1/1) ... [2020-11-22 13:05:28,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f10cc3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:28, skipping insertion in model container [2020-11-22 13:05:28,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:28" (1/1) ... [2020-11-22 13:05:28,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:28,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:28,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:28,385 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:05:28,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:28,425 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:05:28,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:28 WrapperNode [2020-11-22 13:05:28,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:28,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:28,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:05:28,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:05:28,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:28" (1/1) ... [2020-11-22 13:05:28,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:28" (1/1) ... [2020-11-22 13:05:28,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:28,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:05:28,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:05:28,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:05:28,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:28" (1/1) ... [2020-11-22 13:05:28,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:28" (1/1) ... [2020-11-22 13:05:28,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:28" (1/1) ... [2020-11-22 13:05:28,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:28" (1/1) ... [2020-11-22 13:05:28,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:28" (1/1) ... [2020-11-22 13:05:28,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:28" (1/1) ... [2020-11-22 13:05:28,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:28" (1/1) ... [2020-11-22 13:05:28,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:05:28,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:05:28,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:05:28,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:05:28,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:28,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:05:28,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:05:28,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-22 13:05:28,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 13:05:28,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-22 13:05:28,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:05:28,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:05:28,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 13:05:28,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:05:29,178 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:29,178 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-22 13:05:29,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:29 BoogieIcfgContainer [2020-11-22 13:05:29,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:29,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:29,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:29,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:29,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:05:28" (1/3) ... [2020-11-22 13:05:29,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd0fa2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:29, skipping insertion in model container [2020-11-22 13:05:29,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:28" (2/3) ... [2020-11-22 13:05:29,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd0fa2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:29, skipping insertion in model container [2020-11-22 13:05:29,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:29" (3/3) ... [2020-11-22 13:05:29,194 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2020-11-22 13:05:29,205 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:29,209 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:05:29,222 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:05:29,246 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:29,247 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:05:29,247 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:29,247 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:29,247 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:29,247 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:29,247 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:29,248 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:29,261 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-22 13:05:29,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:05:29,266 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:29,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:29,267 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:29,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:29,273 INFO L82 PathProgramCache]: Analyzing trace with hash -453071038, now seen corresponding path program 1 times [2020-11-22 13:05:29,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:29,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730067832] [2020-11-22 13:05:29,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:29,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:29,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730067832] [2020-11-22 13:05:29,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:29,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:29,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656185404] [2020-11-22 13:05:29,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:05:29,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:29,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:05:29,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:05:29,428 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-22 13:05:29,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:29,443 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-11-22 13:05:29,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:05:29,444 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-22 13:05:29,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:29,453 INFO L225 Difference]: With dead ends: 35 [2020-11-22 13:05:29,453 INFO L226 Difference]: Without dead ends: 16 [2020-11-22 13:05:29,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:05:29,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-22 13:05:29,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-22 13:05:29,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-22 13:05:29,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2020-11-22 13:05:29,486 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 8 [2020-11-22 13:05:29,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:29,486 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2020-11-22 13:05:29,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:05:29,487 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2020-11-22 13:05:29,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 13:05:29,487 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:29,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:29,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:05:29,488 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:29,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:29,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1333965621, now seen corresponding path program 1 times [2020-11-22 13:05:29,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:29,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682823862] [2020-11-22 13:05:29,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:05:29,537 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:05:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:05:29,591 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:05:29,631 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:05:29,631 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:05:29,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:05:29,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:05:29 BoogieIcfgContainer [2020-11-22 13:05:29,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:05:29,665 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:05:29,665 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:05:29,666 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:05:29,666 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:29" (3/4) ... [2020-11-22 13:05:29,669 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:05:29,669 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:05:29,675 INFO L168 Benchmark]: Toolchain (without parser) took 1566.84 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 60.7 MB in the beginning and 63.3 MB in the end (delta: -2.6 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:29,675 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 92.3 MB. Free memory is still 48.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:29,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.67 ms. Allocated memory is still 92.3 MB. Free memory was 60.5 MB in the beginning and 67.7 MB in the end (delta: -7.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:29,679 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.01 ms. Allocated memory is still 92.3 MB. Free memory was 67.7 MB in the beginning and 66.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:29,680 INFO L168 Benchmark]: Boogie Preprocessor took 27.42 ms. Allocated memory is still 92.3 MB. Free memory was 66.1 MB in the beginning and 64.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:29,681 INFO L168 Benchmark]: RCFGBuilder took 687.99 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 64.5 MB in the beginning and 85.8 MB in the end (delta: -21.3 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:29,682 INFO L168 Benchmark]: TraceAbstraction took 482.60 ms. Allocated memory is still 111.1 MB. Free memory was 85.3 MB in the beginning and 63.8 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:29,683 INFO L168 Benchmark]: Witness Printer took 4.35 ms. Allocated memory is still 111.1 MB. Free memory is still 63.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:29,692 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 92.3 MB. Free memory is still 48.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 310.67 ms. Allocated memory is still 92.3 MB. Free memory was 60.5 MB in the beginning and 67.7 MB in the end (delta: -7.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.01 ms. Allocated memory is still 92.3 MB. Free memory was 67.7 MB in the beginning and 66.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.42 ms. Allocated memory is still 92.3 MB. Free memory was 66.1 MB in the beginning and 64.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 687.99 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 64.5 MB in the beginning and 85.8 MB in the end (delta: -21.3 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 482.60 ms. Allocated memory is still 111.1 MB. Free memory was 85.3 MB in the beginning and 63.8 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.35 ms. Allocated memory is still 111.1 MB. Free memory is still 63.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L76] double x = 0.0 / 0.0; [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L29] COND FALSE !(exponent_less_1023 < 20) [L43] COND TRUE exponent_less_1023 > 51 [L44] COND TRUE exponent_less_1023 == 1024 [L45] return x + x; [L77] double res = round_double(x); [L17] return x != x; [L80] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1031.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:05:32,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:32,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:32,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:32,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:32,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:32,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:32,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:32,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:32,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:32,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:32,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:32,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:32,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:32,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:32,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:32,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:32,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:32,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:32,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:32,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:32,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:32,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:32,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:32,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:32,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:32,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:32,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:32,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:32,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:32,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:32,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:32,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:32,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:32,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:32,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:32,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:32,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:32,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:32,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:32,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:32,233 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 13:05:32,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:32,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:32,275 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:32,276 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:32,276 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:32,276 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:32,276 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:32,276 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:32,277 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:32,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:32,279 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:05:32,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:05:32,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:32,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:05:32,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:32,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:05:32,281 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:05:32,281 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:05:32,281 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:05:32,281 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:05:32,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:05:32,282 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:32,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:05:32,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:32,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:05:32,283 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:32,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:32,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:32,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:32,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:32,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:05:32,299 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:05:32,300 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:05:32,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:05:32,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:32,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:32,300 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_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c4d19baf0429684b688f90d909ef640d9fb6537 [2020-11-22 13:05:32,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:32,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:32,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:32,736 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:32,738 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:32,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2020-11-22 13:05:32,815 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/data/6d4d60fad/188ffcbcbd14465e8d01b6d599fc3f09/FLAGab38cb779 [2020-11-22 13:05:33,403 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:33,404 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2020-11-22 13:05:33,413 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/data/6d4d60fad/188ffcbcbd14465e8d01b6d599fc3f09/FLAGab38cb779 [2020-11-22 13:05:33,746 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/data/6d4d60fad/188ffcbcbd14465e8d01b6d599fc3f09 [2020-11-22 13:05:33,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:33,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:33,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:33,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:33,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:33,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:33" (1/1) ... [2020-11-22 13:05:33,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35169aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:33, skipping insertion in model container [2020-11-22 13:05:33,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:33" (1/1) ... [2020-11-22 13:05:33,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:33,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:33,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:33,980 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:05:34,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:34,086 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:05:34,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34 WrapperNode [2020-11-22 13:05:34,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:34,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:34,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:05:34,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:05:34,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34" (1/1) ... [2020-11-22 13:05:34,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34" (1/1) ... [2020-11-22 13:05:34,153 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:34,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:05:34,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:05:34,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:05:34,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34" (1/1) ... [2020-11-22 13:05:34,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34" (1/1) ... [2020-11-22 13:05:34,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34" (1/1) ... [2020-11-22 13:05:34,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34" (1/1) ... [2020-11-22 13:05:34,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34" (1/1) ... [2020-11-22 13:05:34,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34" (1/1) ... [2020-11-22 13:05:34,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34" (1/1) ... [2020-11-22 13:05:34,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:05:34,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:05:34,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:05:34,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:05:34,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:34,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-22 13:05:34,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-22 13:05:34,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:05:34,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:05:34,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-22 13:05:34,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:05:34,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:05:34,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-22 13:05:34,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:05:34,951 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:34,951 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-22 13:05:34,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:34 BoogieIcfgContainer [2020-11-22 13:05:34,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:34,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:34,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:34,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:34,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:05:33" (1/3) ... [2020-11-22 13:05:34,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d0eab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:34, skipping insertion in model container [2020-11-22 13:05:34,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:34" (2/3) ... [2020-11-22 13:05:34,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d0eab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:34, skipping insertion in model container [2020-11-22 13:05:34,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:34" (3/3) ... [2020-11-22 13:05:34,959 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2020-11-22 13:05:34,969 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:34,974 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:05:34,985 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:05:35,007 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:35,007 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:05:35,007 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:35,007 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:35,007 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:35,007 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:35,007 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:35,008 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:35,018 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-11-22 13:05:35,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 13:05:35,023 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:35,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:35,024 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:35,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:35,029 INFO L82 PathProgramCache]: Analyzing trace with hash 2068161395, now seen corresponding path program 1 times [2020-11-22 13:05:35,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:35,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680826003] [2020-11-22 13:05:35,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-22 13:05:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:35,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 13:05:35,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:35,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:35,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:35,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:35,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680826003] [2020-11-22 13:05:35,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:35,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:05:35,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618279347] [2020-11-22 13:05:35,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:05:35,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:35,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:05:35,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:05:35,233 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-11-22 13:05:35,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:35,260 INFO L93 Difference]: Finished difference Result 51 states and 75 transitions. [2020-11-22 13:05:35,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:05:35,261 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-22 13:05:35,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:35,272 INFO L225 Difference]: With dead ends: 51 [2020-11-22 13:05:35,273 INFO L226 Difference]: Without dead ends: 23 [2020-11-22 13:05:35,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:05:35,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-22 13:05:35,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-22 13:05:35,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-22 13:05:35,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2020-11-22 13:05:35,311 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 11 [2020-11-22 13:05:35,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:35,311 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2020-11-22 13:05:35,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:05:35,312 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2020-11-22 13:05:35,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 13:05:35,313 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:35,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:35,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:05:35,541 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:35,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:35,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1606884976, now seen corresponding path program 1 times [2020-11-22 13:05:35,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:35,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281915311] [2020-11-22 13:05:35,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-22 13:05:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:35,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-22 13:05:35,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:35,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:35,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:36,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:36,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281915311] [2020-11-22 13:05:36,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:36,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-22 13:05:36,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218278926] [2020-11-22 13:05:36,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 13:05:36,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:36,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 13:05:36,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:05:36,091 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand 10 states. [2020-11-22 13:05:36,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:36,755 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2020-11-22 13:05:36,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:05:36,756 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-11-22 13:05:36,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:36,757 INFO L225 Difference]: With dead ends: 28 [2020-11-22 13:05:36,757 INFO L226 Difference]: Without dead ends: 22 [2020-11-22 13:05:36,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-22 13:05:36,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-22 13:05:36,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-22 13:05:36,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-22 13:05:36,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-11-22 13:05:36,762 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2020-11-22 13:05:36,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:36,762 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-11-22 13:05:36,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 13:05:36,762 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-11-22 13:05:36,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-22 13:05:36,763 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:36,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:36,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:05:36,964 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:36,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:36,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1251020519, now seen corresponding path program 1 times [2020-11-22 13:05:36,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:36,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099888853] [2020-11-22 13:05:36,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-22 13:05:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:37,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-22 13:05:37,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:37,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:37,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:37,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:37,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099888853] [2020-11-22 13:05:37,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:37,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-22 13:05:37,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439634040] [2020-11-22 13:05:37,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 13:05:37,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:37,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 13:05:37,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:05:37,414 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 8 states. [2020-11-22 13:05:37,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:37,684 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-11-22 13:05:37,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:05:37,686 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-22 13:05:37,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:37,686 INFO L225 Difference]: With dead ends: 22 [2020-11-22 13:05:37,686 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:05:37,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:05:37,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:05:37,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:05:37,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:05:37,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:05:37,688 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-22 13:05:37,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:37,688 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:05:37,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 13:05:37,688 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:05:37,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:05:37,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:05:37,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:05:37,983 INFO L277 CegarLoopResult]: At program point L85(lines 68 86) the Hoare annotation is: true [2020-11-22 13:05:37,983 INFO L274 CegarLoopResult]: For program point L44(lines 44 47) no Hoare annotation was computed. [2020-11-22 13:05:37,984 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-22 13:05:37,984 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-22 13:05:37,984 INFO L270 CegarLoopResult]: At program point L65(lines 19 66) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_round_double_~x ULTIMATE.start_round_double_~x)) (not (fp.eq |ULTIMATE.start_round_double_#res| |ULTIMATE.start_round_double_#res|))) [2020-11-22 13:05:37,984 INFO L274 CegarLoopResult]: For program point L32(lines 32 33) no Hoare annotation was computed. [2020-11-22 13:05:37,984 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-22 13:05:37,984 INFO L274 CegarLoopResult]: For program point L32-2(lines 32 33) no Hoare annotation was computed. [2020-11-22 13:05:37,984 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:05:37,984 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-22 13:05:37,984 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-22 13:05:37,985 INFO L274 CegarLoopResult]: For program point L37(lines 37 38) no Hoare annotation was computed. [2020-11-22 13:05:37,985 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:05:37,985 INFO L274 CegarLoopResult]: For program point L29(lines 29 58) no Hoare annotation was computed. [2020-11-22 13:05:37,985 INFO L274 CegarLoopResult]: For program point L54(lines 54 55) no Hoare annotation was computed. [2020-11-22 13:05:37,985 INFO L274 CegarLoopResult]: For program point L54-2(lines 54 55) no Hoare annotation was computed. [2020-11-22 13:05:37,985 INFO L270 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_round_double_~x ULTIMATE.start_round_double_~x)) (not (fp.eq |ULTIMATE.start_round_double_#res| |ULTIMATE.start_round_double_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2020-11-22 13:05:37,985 INFO L274 CegarLoopResult]: For program point L30(lines 30 42) no Hoare annotation was computed. [2020-11-22 13:05:37,985 INFO L274 CegarLoopResult]: For program point L59(lines 59 64) no Hoare annotation was computed. [2020-11-22 13:05:37,985 INFO L274 CegarLoopResult]: For program point L59-1(lines 19 66) no Hoare annotation was computed. [2020-11-22 13:05:37,985 INFO L274 CegarLoopResult]: For program point L59-2(lines 59 64) no Hoare annotation was computed. [2020-11-22 13:05:37,985 INFO L274 CegarLoopResult]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2020-11-22 13:05:37,985 INFO L270 CegarLoopResult]: At program point L22-2(lines 22 27) the Hoare annotation is: (not (fp.eq ULTIMATE.start_round_double_~x ULTIMATE.start_round_double_~x)) [2020-11-22 13:05:37,986 INFO L274 CegarLoopResult]: For program point L22-3(lines 22 27) no Hoare annotation was computed. [2020-11-22 13:05:37,986 INFO L274 CegarLoopResult]: For program point L51(lines 51 52) no Hoare annotation was computed. [2020-11-22 13:05:37,986 INFO L274 CegarLoopResult]: For program point L80(lines 80 83) no Hoare annotation was computed. [2020-11-22 13:05:37,986 INFO L274 CegarLoopResult]: For program point L43(lines 43 58) no Hoare annotation was computed. [2020-11-22 13:05:38,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:05:38 BoogieIcfgContainer [2020-11-22 13:05:38,005 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:05:38,011 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:05:38,011 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:05:38,011 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:05:38,012 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:34" (3/4) ... [2020-11-22 13:05:38,014 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:05:38,027 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-22 13:05:38,027 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-22 13:05:38,027 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 13:05:38,028 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:05:38,056 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result) [2020-11-22 13:05:38,057 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result)) && 1bv32 == \result [2020-11-22 13:05:38,102 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3b85a625-9adb-48f1-9d8d-9d7608bf1ba4/bin/utaipan/witness.graphml [2020-11-22 13:05:38,103 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:05:38,105 INFO L168 Benchmark]: Toolchain (without parser) took 4353.70 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 44.8 MB in the beginning and 58.3 MB in the end (delta: -13.5 MB). Peak memory consumption was 896.6 kB. Max. memory is 16.1 GB. [2020-11-22 13:05:38,105 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 65.0 MB. Free memory is still 46.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:38,106 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.43 ms. Allocated memory is still 65.0 MB. Free memory was 44.6 MB in the beginning and 46.5 MB in the end (delta: -1.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:38,107 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.65 ms. Allocated memory is still 65.0 MB. Free memory was 46.5 MB in the beginning and 44.7 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:38,107 INFO L168 Benchmark]: Boogie Preprocessor took 68.88 ms. Allocated memory is still 65.0 MB. Free memory was 44.7 MB in the beginning and 43.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:38,108 INFO L168 Benchmark]: RCFGBuilder took 728.21 ms. Allocated memory is still 65.0 MB. Free memory was 43.1 MB in the beginning and 44.5 MB in the end (delta: -1.5 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:38,108 INFO L168 Benchmark]: TraceAbstraction took 3051.31 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 43.9 MB in the beginning and 25.7 MB in the end (delta: 18.2 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:38,109 INFO L168 Benchmark]: Witness Printer took 92.35 ms. Allocated memory is still 79.7 MB. Free memory was 61.1 MB in the beginning and 58.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:38,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 65.0 MB. Free memory is still 46.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 335.43 ms. Allocated memory is still 65.0 MB. Free memory was 44.6 MB in the beginning and 46.5 MB in the end (delta: -1.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.65 ms. Allocated memory is still 65.0 MB. Free memory was 46.5 MB in the beginning and 44.7 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.88 ms. Allocated memory is still 65.0 MB. Free memory was 44.7 MB in the beginning and 43.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 728.21 ms. Allocated memory is still 65.0 MB. Free memory was 43.1 MB in the beginning and 44.5 MB in the end (delta: -1.5 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3051.31 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 43.9 MB in the beginning and 25.7 MB in the end (delta: 18.2 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. * Witness Printer took 92.35 ms. Allocated memory is still 79.7 MB. Free memory was 61.1 MB in the beginning and 58.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (!~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result)) && 1bv32 == \result - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 59 SDtfs, 28 SDslu, 124 SDs, 0 SdLazy, 54 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 26 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 70 ConstructedInterpolants, 12 QuantifiedInterpolants, 3121 SizeOfPredicates, 18 NumberOfNonLiveVariables, 155 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...