./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0921.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0921.c -s /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/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 e3309a0b9ddf6a439ec38f457e14947ace4c70ec ...................................................................................................................................................................................................................................................................................................................... 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_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0921.c -s /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/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 e3309a0b9ddf6a439ec38f457e14947ace4c70ec ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 12:07:44,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:07:44,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:07:44,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:07:44,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:07:44,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:07:44,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:07:44,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:07:44,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:07:44,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:07:44,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:07:44,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:07:44,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:07:44,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:07:44,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:07:44,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:07:44,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:07:44,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:07:44,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:07:44,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:07:44,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:07:44,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:07:44,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:07:44,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:07:44,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:07:44,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:07:44,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:07:44,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:07:44,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:07:44,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:07:44,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:07:44,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:07:44,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:07:44,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:07:44,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:07:44,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:07:44,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:07:44,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:07:44,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:07:44,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:07:44,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:07:44,574 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 12:07:44,595 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:07:44,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:07:44,596 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:07:44,597 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:07:44,597 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:07:44,597 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:07:44,597 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 12:07:44,597 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:07:44,597 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:07:44,597 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 12:07:44,597 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 12:07:44,598 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:07:44,598 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 12:07:44,598 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 12:07:44,598 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 12:07:44,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:07:44,599 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 12:07:44,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 12:07:44,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 12:07:44,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:07:44,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 12:07:44,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:07:44,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 12:07:44,599 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:07:44,600 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 12:07:44,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 12:07:44,600 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:07:44,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 12:07:44,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:07:44,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:07:44,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:07:44,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:07:44,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:07:44,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 12:07:44,601 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 12:07:44,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 12:07:44,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 12:07:44,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:07:44,602 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:07:44,602 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_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3309a0b9ddf6a439ec38f457e14947ace4c70ec [2020-12-09 12:07:44,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:07:44,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:07:44,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:07:44,788 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:07:44,789 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:07:44,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0921.c [2020-12-09 12:07:44,829 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/data/c1cf00131/44dc63b6565344a289d3cb1e5eeb254e/FLAG276ec4f1d [2020-12-09 12:07:45,221 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:07:45,221 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/sv-benchmarks/c/float-newlib/double_req_bl_0921.c [2020-12-09 12:07:45,226 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/data/c1cf00131/44dc63b6565344a289d3cb1e5eeb254e/FLAG276ec4f1d [2020-12-09 12:07:45,236 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/data/c1cf00131/44dc63b6565344a289d3cb1e5eeb254e [2020-12-09 12:07:45,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:07:45,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:07:45,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:07:45,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:07:45,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:07:45,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:07:45" (1/1) ... [2020-12-09 12:07:45,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc24868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:45, skipping insertion in model container [2020-12-09 12:07:45,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:07:45" (1/1) ... [2020-12-09 12:07:45,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:07:45,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:07:45,394 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/sv-benchmarks/c/float-newlib/double_req_bl_0921.c[3679,3692] [2020-12-09 12:07:45,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:07:45,403 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 12:07:45,430 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/sv-benchmarks/c/float-newlib/double_req_bl_0921.c[3679,3692] [2020-12-09 12:07:45,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:07:45,441 INFO L208 MainTranslator]: Completed translation [2020-12-09 12:07:45,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:45 WrapperNode [2020-12-09 12:07:45,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:07:45,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 12:07:45,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 12:07:45,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 12:07:45,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:45" (1/1) ... [2020-12-09 12:07:45,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:45" (1/1) ... [2020-12-09 12:07:45,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 12:07:45,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 12:07:45,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 12:07:45,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 12:07:45,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:45" (1/1) ... [2020-12-09 12:07:45,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:45" (1/1) ... [2020-12-09 12:07:45,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:45" (1/1) ... [2020-12-09 12:07:45,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:45" (1/1) ... [2020-12-09 12:07:45,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:45" (1/1) ... [2020-12-09 12:07:45,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:45" (1/1) ... [2020-12-09 12:07:45,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:45" (1/1) ... [2020-12-09 12:07:45,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 12:07:45,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 12:07:45,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 12:07:45,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 12:07:45,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:07:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 12:07:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 12:07:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-09 12:07:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 12:07:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-09 12:07:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 12:07:45,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 12:07:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 12:07:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 12:07:45,913 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 12:07:45,914 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-09 12:07:45,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:07:45 BoogieIcfgContainer [2020-12-09 12:07:45,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 12:07:45,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 12:07:45,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 12:07:45,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 12:07:45,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:07:45" (1/3) ... [2020-12-09 12:07:45,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f983e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:07:45, skipping insertion in model container [2020-12-09 12:07:45,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:45" (2/3) ... [2020-12-09 12:07:45,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f983e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:07:45, skipping insertion in model container [2020-12-09 12:07:45,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:07:45" (3/3) ... [2020-12-09 12:07:45,927 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0921.c [2020-12-09 12:07:45,940 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 12:07:45,943 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 12:07:45,954 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 12:07:45,976 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 12:07:45,976 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 12:07:45,976 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 12:07:45,976 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 12:07:45,976 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 12:07:45,976 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 12:07:45,976 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 12:07:45,977 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 12:07:45,985 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-12-09 12:07:45,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 12:07:45,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:07:45,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:07:45,990 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:07:45,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:07:45,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1765374846, now seen corresponding path program 1 times [2020-12-09 12:07:46,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:07:46,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629737990] [2020-12-09 12:07:46,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:07:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:07:46,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:07:46,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629737990] [2020-12-09 12:07:46,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:07:46,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:07:46,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079303491] [2020-12-09 12:07:46,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 12:07:46,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:07:46,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 12:07:46,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 12:07:46,111 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-12-09 12:07:46,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:07:46,122 INFO L93 Difference]: Finished difference Result 37 states and 57 transitions. [2020-12-09 12:07:46,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 12:07:46,123 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 12:07:46,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:07:46,129 INFO L225 Difference]: With dead ends: 37 [2020-12-09 12:07:46,129 INFO L226 Difference]: Without dead ends: 17 [2020-12-09 12:07:46,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 12:07:46,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-09 12:07:46,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-09 12:07:46,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-09 12:07:46,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2020-12-09 12:07:46,153 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 8 [2020-12-09 12:07:46,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:07:46,153 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2020-12-09 12:07:46,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 12:07:46,153 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2020-12-09 12:07:46,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 12:07:46,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:07:46,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:07:46,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 12:07:46,154 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:07:46,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:07:46,155 INFO L82 PathProgramCache]: Analyzing trace with hash -656636463, now seen corresponding path program 1 times [2020-12-09 12:07:46,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:07:46,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372844949] [2020-12-09 12:07:46,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:07:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 12:07:46,187 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 12:07:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 12:07:46,212 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 12:07:46,230 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 12:07:46,230 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 12:07:46,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 12:07:46,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:07:46 BoogieIcfgContainer [2020-12-09 12:07:46,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 12:07:46,253 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 12:07:46,253 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 12:07:46,254 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 12:07:46,254 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:07:45" (3/4) ... [2020-12-09 12:07:46,256 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 12:07:46,256 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 12:07:46,258 INFO L168 Benchmark]: Toolchain (without parser) took 1018.26 ms. Allocated memory is still 107.0 MB. Free memory was 68.5 MB in the beginning and 60.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2020-12-09 12:07:46,258 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 107.0 MB. Free memory is still 85.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:07:46,259 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.36 ms. Allocated memory is still 107.0 MB. Free memory was 68.3 MB in the beginning and 80.7 MB in the end (delta: -12.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 12:07:46,259 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.94 ms. Allocated memory is still 107.0 MB. Free memory was 80.7 MB in the beginning and 78.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:07:46,260 INFO L168 Benchmark]: Boogie Preprocessor took 21.33 ms. Allocated memory is still 107.0 MB. Free memory was 78.8 MB in the beginning and 77.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:07:46,260 INFO L168 Benchmark]: RCFGBuilder took 420.11 ms. Allocated memory is still 107.0 MB. Free memory was 77.1 MB in the beginning and 45.2 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2020-12-09 12:07:46,260 INFO L168 Benchmark]: TraceAbstraction took 336.33 ms. Allocated memory is still 107.0 MB. Free memory was 44.8 MB in the beginning and 60.5 MB in the end (delta: -15.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:07:46,261 INFO L168 Benchmark]: Witness Printer took 2.93 ms. Allocated memory is still 107.0 MB. Free memory is still 60.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:07:46,263 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 107.0 MB. Free memory is still 85.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 202.36 ms. Allocated memory is still 107.0 MB. Free memory was 68.3 MB in the beginning and 80.7 MB in the end (delta: -12.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.94 ms. Allocated memory is still 107.0 MB. Free memory was 80.7 MB in the beginning and 78.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.33 ms. Allocated memory is still 107.0 MB. Free memory was 78.8 MB in the beginning and 77.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 420.11 ms. Allocated memory is still 107.0 MB. Free memory was 77.1 MB in the beginning and 45.2 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 336.33 ms. Allocated memory is still 107.0 MB. Free memory was 44.8 MB in the beginning and 60.5 MB in the end (delta: -15.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 2.93 ms. Allocated memory is still 107.0 MB. Free memory is still 60.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 142]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 129, overapproximation of bitwiseOr at line 61, overapproximation of someBinaryArithmeticDOUBLEoperation at line 62. Possible FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; [L137] double x = 0.0 / 0.0; [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L60] COND TRUE hx < 0x00100000 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L61] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L62] return -two54_log / zero; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L138] double res = __ieee754_log(x); [L129] return x != x; [L141] COND TRUE !isnan_double(res) [L142] reach_error() VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 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=19occurred 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 0.2.0-7b2dab5 [2020-12-09 12:07:47,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:07:47,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:07:47,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:07:47,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:07:47,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:07:47,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:07:47,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:07:47,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:07:47,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:07:47,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:07:47,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:07:47,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:07:47,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:07:47,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:07:47,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:07:47,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:07:47,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:07:47,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:07:47,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:07:47,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:07:47,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:07:47,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:07:47,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:07:47,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:07:47,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:07:47,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:07:47,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:07:47,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:07:47,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:07:47,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:07:47,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:07:47,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:07:47,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:07:47,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:07:47,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:07:47,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:07:47,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:07:47,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:07:47,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:07:47,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:07:47,929 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 12:07:47,958 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:07:47,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:07:47,958 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:07:47,959 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:07:47,959 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:07:47,959 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:07:47,959 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:07:47,959 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:07:47,959 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:07:47,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:07:47,960 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 12:07:47,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 12:07:47,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:07:47,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 12:07:47,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:07:47,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 12:07:47,961 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:07:47,961 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 12:07:47,961 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 12:07:47,961 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 12:07:47,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 12:07:47,962 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:07:47,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 12:07:47,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:07:47,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 12:07:47,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:07:47,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:07:47,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:07:47,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:07:47,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 12:07:47,963 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 12:07:47,963 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 12:07:47,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 12:07:47,963 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:07:47,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:07:47,964 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_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3309a0b9ddf6a439ec38f457e14947ace4c70ec [2020-12-09 12:07:48,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:07:48,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:07:48,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:07:48,198 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:07:48,198 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:07:48,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0921.c [2020-12-09 12:07:48,240 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/data/8bd9c0a76/87c67e1ba2174efdaee15391a2cba432/FLAGb45f0c137 [2020-12-09 12:07:48,640 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:07:48,641 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/sv-benchmarks/c/float-newlib/double_req_bl_0921.c [2020-12-09 12:07:48,646 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/data/8bd9c0a76/87c67e1ba2174efdaee15391a2cba432/FLAGb45f0c137 [2020-12-09 12:07:48,656 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/data/8bd9c0a76/87c67e1ba2174efdaee15391a2cba432 [2020-12-09 12:07:48,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:07:48,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:07:48,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:07:48,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:07:48,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:07:48,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:07:48" (1/1) ... [2020-12-09 12:07:48,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62edcc6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:48, skipping insertion in model container [2020-12-09 12:07:48,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:07:48" (1/1) ... [2020-12-09 12:07:48,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:07:48,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:07:48,798 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/sv-benchmarks/c/float-newlib/double_req_bl_0921.c[3679,3692] [2020-12-09 12:07:48,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:07:48,810 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 12:07:48,858 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/sv-benchmarks/c/float-newlib/double_req_bl_0921.c[3679,3692] [2020-12-09 12:07:48,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:07:48,876 INFO L208 MainTranslator]: Completed translation [2020-12-09 12:07:48,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:48 WrapperNode [2020-12-09 12:07:48,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:07:48,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 12:07:48,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 12:07:48,878 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 12:07:48,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:48" (1/1) ... [2020-12-09 12:07:48,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:48" (1/1) ... [2020-12-09 12:07:48,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 12:07:48,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 12:07:48,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 12:07:48,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 12:07:48,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:48" (1/1) ... [2020-12-09 12:07:48,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:48" (1/1) ... [2020-12-09 12:07:48,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:48" (1/1) ... [2020-12-09 12:07:48,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:48" (1/1) ... [2020-12-09 12:07:48,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:48" (1/1) ... [2020-12-09 12:07:48,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:48" (1/1) ... [2020-12-09 12:07:48,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:48" (1/1) ... [2020-12-09 12:07:48,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 12:07:48,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 12:07:48,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 12:07:48,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 12:07:48,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:07:49,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-09 12:07:49,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-09 12:07:49,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 12:07:49,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 12:07:49,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 12:07:49,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 12:07:49,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 12:07:49,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 12:07:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 12:08:15,993 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 12:08:15,994 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-09 12:08:15,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:08:15 BoogieIcfgContainer [2020-12-09 12:08:15,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 12:08:15,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 12:08:15,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 12:08:15,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 12:08:15,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:07:48" (1/3) ... [2020-12-09 12:08:16,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238d377c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:08:16, skipping insertion in model container [2020-12-09 12:08:16,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:07:48" (2/3) ... [2020-12-09 12:08:16,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238d377c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:08:16, skipping insertion in model container [2020-12-09 12:08:16,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:08:15" (3/3) ... [2020-12-09 12:08:16,002 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0921.c [2020-12-09 12:08:16,012 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 12:08:16,015 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 12:08:16,023 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 12:08:16,039 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 12:08:16,039 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 12:08:16,039 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 12:08:16,039 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 12:08:16,039 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 12:08:16,039 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 12:08:16,039 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 12:08:16,039 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 12:08:16,048 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-09 12:08:16,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 12:08:16,051 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:08:16,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:08:16,052 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:08:16,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:08:16,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1030195787, now seen corresponding path program 1 times [2020-12-09 12:08:16,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:08:16,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788183120] [2020-12-09 12:08:16,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 12:08:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:08:16,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 12:08:16,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:08:16,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:08:16,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:08:16,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788183120] [2020-12-09 12:08:16,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:08:16,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:08:16,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224596661] [2020-12-09 12:08:16,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 12:08:16,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:08:16,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 12:08:16,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 12:08:16,926 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-09 12:08:16,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:08:16,939 INFO L93 Difference]: Finished difference Result 56 states and 90 transitions. [2020-12-09 12:08:16,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 12:08:16,940 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-09 12:08:16,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:08:16,947 INFO L225 Difference]: With dead ends: 56 [2020-12-09 12:08:16,947 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 12:08:16,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 12:08:16,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 12:08:16,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-09 12:08:16,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 12:08:16,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2020-12-09 12:08:16,972 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 10 [2020-12-09 12:08:16,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:08:16,972 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2020-12-09 12:08:16,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 12:08:16,972 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2020-12-09 12:08:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 12:08:16,973 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:08:16,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:08:17,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 12:08:17,175 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:08:17,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:08:17,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1305111410, now seen corresponding path program 1 times [2020-12-09 12:08:17,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:08:17,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472938850] [2020-12-09 12:08:17,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 12:08:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:08:18,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 12:08:18,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:08:18,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:08:18,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:08:18,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472938850] [2020-12-09 12:08:18,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:08:18,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 12:08:18,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155771816] [2020-12-09 12:08:18,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:08:18,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:08:18,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:08:18,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:08:18,267 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 4 states. [2020-12-09 12:08:18,446 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-12-09 12:08:29,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:08:29,567 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-12-09 12:08:30,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 12:08:30,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 12:08:30,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:08:30,033 INFO L225 Difference]: With dead ends: 38 [2020-12-09 12:08:30,033 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 12:08:30,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:08:30,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 12:08:30,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2020-12-09 12:08:30,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 12:08:30,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2020-12-09 12:08:30,039 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 11 [2020-12-09 12:08:30,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:08:30,039 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2020-12-09 12:08:30,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:08:30,039 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2020-12-09 12:08:30,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 12:08:30,040 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:08:30,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:08:30,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 12:08:30,242 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:08:30,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:08:30,244 INFO L82 PathProgramCache]: Analyzing trace with hash -594923761, now seen corresponding path program 1 times [2020-12-09 12:08:30,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:08:30,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810607484] [2020-12-09 12:08:30,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 12:08:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:08:30,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 12:08:30,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:08:30,678 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-12-09 12:08:31,101 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 3 [2020-12-09 12:08:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:08:31,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:08:31,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810607484] [2020-12-09 12:08:31,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:08:31,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 12:08:31,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707742861] [2020-12-09 12:08:31,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 12:08:31,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:08:31,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 12:08:31,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-09 12:08:31,315 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand 7 states. [2020-12-09 12:08:31,902 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-12-09 12:08:37,174 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 12:08:37,502 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-12-09 12:09:10,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:09:10,453 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-12-09 12:09:10,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 12:09:10,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-12-09 12:09:10,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:09:10,455 INFO L225 Difference]: With dead ends: 43 [2020-12-09 12:09:10,456 INFO L226 Difference]: Without dead ends: 38 [2020-12-09 12:09:10,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-09 12:09:10,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-09 12:09:10,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-12-09 12:09:10,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 12:09:10,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2020-12-09 12:09:10,465 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 11 [2020-12-09 12:09:10,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:09:10,465 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-12-09 12:09:10,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 12:09:10,465 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2020-12-09 12:09:10,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 12:09:10,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:09:10,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:09:10,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 12:09:10,668 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:09:10,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:09:10,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1813045648, now seen corresponding path program 1 times [2020-12-09 12:09:10,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:09:10,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079589959] [2020-12-09 12:09:10,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 12:09:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:09:11,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 12:09:11,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:09:11,677 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-12-09 12:09:11,915 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-12-09 12:09:12,421 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 3 [2020-12-09 12:09:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:09:12,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:09:12,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079589959] [2020-12-09 12:09:12,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:09:12,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 12:09:12,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209312450] [2020-12-09 12:09:12,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 12:09:12,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:09:12,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 12:09:12,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-09 12:09:12,628 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand 7 states. [2020-12-09 12:09:17,679 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-12-09 12:09:18,036 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-12-09 12:09:18,833 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 12:09:23,061 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-12-09 12:09:27,950 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-12-09 12:09:52,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:09:52,154 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-12-09 12:09:52,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 12:09:52,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-12-09 12:09:52,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:09:52,157 INFO L225 Difference]: With dead ends: 40 [2020-12-09 12:09:52,157 INFO L226 Difference]: Without dead ends: 32 [2020-12-09 12:09:52,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-09 12:09:52,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-09 12:09:52,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2020-12-09 12:09:52,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 12:09:52,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-12-09 12:09:52,165 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 12 [2020-12-09 12:09:52,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:09:52,165 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-12-09 12:09:52,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 12:09:52,166 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-12-09 12:09:52,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 12:09:52,167 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:09:52,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:09:52,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 12:09:52,369 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:09:52,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:09:52,370 INFO L82 PathProgramCache]: Analyzing trace with hash 464451163, now seen corresponding path program 1 times [2020-12-09 12:09:52,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:09:52,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450614892] [2020-12-09 12:09:52,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 12:09:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:09:52,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 12:09:52,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:09:53,057 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-12-09 12:09:53,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:09:53,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:09:53,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450614892] [2020-12-09 12:09:53,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:09:53,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 12:09:53,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110693127] [2020-12-09 12:09:53,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 12:09:53,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:09:53,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 12:09:53,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:09:53,078 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 5 states. [2020-12-09 12:09:53,366 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-12-09 12:09:53,672 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-12-09 12:09:59,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:09:59,496 INFO L93 Difference]: Finished difference Result 42 states and 55 transitions. [2020-12-09 12:09:59,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 12:09:59,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-09 12:09:59,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:09:59,993 INFO L225 Difference]: With dead ends: 42 [2020-12-09 12:09:59,993 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 12:09:59,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 12:09:59,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 12:09:59,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-09 12:09:59,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 12:09:59,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-12-09 12:09:59,996 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 17 [2020-12-09 12:09:59,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:09:59,997 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-12-09 12:09:59,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 12:09:59,997 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-12-09 12:09:59,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 12:09:59,997 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:09:59,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:10:00,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 12:10:00,199 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:10:00,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:10:00,201 INFO L82 PathProgramCache]: Analyzing trace with hash -2124593878, now seen corresponding path program 1 times [2020-12-09 12:10:00,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:10:00,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727086480] [2020-12-09 12:10:00,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 12:10:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:10:00,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 12:10:00,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:10:01,116 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-12-09 12:10:01,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:10:01,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:10:01,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727086480] [2020-12-09 12:10:01,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:10:01,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 12:10:01,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712238564] [2020-12-09 12:10:01,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 12:10:01,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:10:01,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 12:10:01,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:10:01,150 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 5 states. [2020-12-09 12:10:01,506 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-12-09 12:10:01,789 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-12-09 12:10:01,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:10:01,818 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2020-12-09 12:10:01,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 12:10:01,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-12-09 12:10:01,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:10:01,820 INFO L225 Difference]: With dead ends: 26 [2020-12-09 12:10:01,820 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 12:10:01,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 12:10:01,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 12:10:01,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 12:10:01,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 12:10:01,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 12:10:01,822 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-12-09 12:10:01,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:10:01,822 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 12:10:01,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 12:10:01,822 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 12:10:01,822 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 12:10:02,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 12:10:02,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 12:10:02,404 WARN L197 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 11 [2020-12-09 12:10:02,594 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 7 [2020-12-09 12:10:03,011 WARN L197 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 11 [2020-12-09 12:10:03,015 INFO L262 CegarLoopResult]: For program point L60(lines 60 72) no Hoare annotation was computed. [2020-12-09 12:10:03,015 INFO L262 CegarLoopResult]: For program point L60-1(lines 47 126) no Hoare annotation was computed. [2020-12-09 12:10:03,016 INFO L262 CegarLoopResult]: For program point L52-1(lines 52 57) no Hoare annotation was computed. [2020-12-09 12:10:03,016 INFO L258 CegarLoopResult]: At program point L52-2(lines 52 57) the Hoare annotation is: (and (= ~zero~0 (_ +zero 11 53)) (= currentRoundingMode roundNearestTiesToEven) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start___ieee754_log_~x))) [2020-12-09 12:10:03,016 INFO L262 CegarLoopResult]: For program point L52-3(lines 52 57) no Hoare annotation was computed. [2020-12-09 12:10:03,016 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 12:10:03,016 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 12:10:03,016 INFO L262 CegarLoopResult]: For program point L61(lines 61 62) no Hoare annotation was computed. [2020-12-09 12:10:03,016 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 12:10:03,017 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 142) no Hoare annotation was computed. [2020-12-09 12:10:03,017 INFO L262 CegarLoopResult]: For program point L86(lines 86 102) no Hoare annotation was computed. [2020-12-09 12:10:03,017 INFO L262 CegarLoopResult]: For program point L115(lines 115 119) no Hoare annotation was computed. [2020-12-09 12:10:03,017 INFO L262 CegarLoopResult]: For program point L78-1(lines 78 83) no Hoare annotation was computed. [2020-12-09 12:10:03,017 INFO L258 CegarLoopResult]: At program point L78-2(lines 78 83) the Hoare annotation is: false [2020-12-09 12:10:03,017 INFO L262 CegarLoopResult]: For program point L78-3(lines 78 83) no Hoare annotation was computed. [2020-12-09 12:10:03,017 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 12:10:03,017 INFO L258 CegarLoopResult]: At program point L124(lines 47 126) the Hoare annotation is: (= (fp.div roundNearestTiesToEven (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (fp.sub roundNearestTiesToEven .cse0 .cse0)) (_ +zero 11 53)) |ULTIMATE.start___ieee754_log_#res|) [2020-12-09 12:10:03,018 INFO L262 CegarLoopResult]: For program point L87(lines 87 94) no Hoare annotation was computed. [2020-12-09 12:10:03,018 INFO L262 CegarLoopResult]: For program point L141(lines 141 144) no Hoare annotation was computed. [2020-12-09 12:10:03,018 INFO L262 CegarLoopResult]: For program point L67-1(lines 67 71) no Hoare annotation was computed. [2020-12-09 12:10:03,018 INFO L258 CegarLoopResult]: At program point L67-2(lines 67 71) the Hoare annotation is: false [2020-12-09 12:10:03,018 INFO L258 CegarLoopResult]: At program point L129(line 129) the Hoare annotation is: (and (= (fp.div roundNearestTiesToEven (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (fp.sub roundNearestTiesToEven .cse0 .cse0)) (_ +zero 11 53)) |ULTIMATE.start___ieee754_log_#res|) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2020-12-09 12:10:03,018 INFO L262 CegarLoopResult]: For program point L96(lines 96 101) no Hoare annotation was computed. [2020-12-09 12:10:03,018 INFO L262 CegarLoopResult]: For program point L63(lines 63 64) no Hoare annotation was computed. [2020-12-09 12:10:03,018 INFO L262 CegarLoopResult]: For program point L121(lines 121 124) no Hoare annotation was computed. [2020-12-09 12:10:03,019 INFO L262 CegarLoopResult]: For program point L88(lines 88 93) no Hoare annotation was computed. [2020-12-09 12:10:03,019 INFO L265 CegarLoopResult]: At program point L146(lines 131 147) the Hoare annotation is: true [2020-12-09 12:10:03,019 INFO L262 CegarLoopResult]: For program point L113(lines 113 125) no Hoare annotation was computed. [2020-12-09 12:10:03,019 INFO L262 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-12-09 12:10:03,027 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,028 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,028 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,028 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,031 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,031 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,032 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,032 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,033 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,033 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,033 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,033 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,033 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,034 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,034 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,034 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,034 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,035 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:10:03,035 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,035 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:10:03,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:10:03 BoogieIcfgContainer [2020-12-09 12:10:03,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 12:10:03,037 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 12:10:03,037 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 12:10:03,037 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 12:10:03,038 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:08:15" (3/4) ... [2020-12-09 12:10:03,040 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 12:10:03,050 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-09 12:10:03,050 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-09 12:10:03,050 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 12:10:03,051 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 12:10:03,070 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (zero == ~Pluszero~LONGDOUBLE() && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-12-09 12:10:03,070 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ~fp.div~DOUBLE(~roundNearestTiesToEven, ~fp.sub~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())), ~Pluszero~LONGDOUBLE()) == \result [2020-12-09 12:10:03,071 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ~fp.div~DOUBLE(~roundNearestTiesToEven, ~fp.sub~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())), ~Pluszero~LONGDOUBLE()) == \result && 1bv32 == \result [2020-12-09 12:10:03,093 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_88ca95fb-fb11-4ba5-b9b3-e17f4b1ffd39/bin/utaipan/witness.graphml [2020-12-09 12:10:03,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 12:10:03,093 INFO L168 Benchmark]: Toolchain (without parser) took 134435.00 ms. Allocated memory was 58.7 MB in the beginning and 88.1 MB in the end (delta: 29.4 MB). Free memory was 40.1 MB in the beginning and 38.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 29.6 MB. Max. memory is 16.1 GB. [2020-12-09 12:10:03,094 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 58.7 MB. Free memory was 41.6 MB in the beginning and 41.5 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:10:03,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 218.09 ms. Allocated memory is still 58.7 MB. Free memory was 40.0 MB in the beginning and 40.5 MB in the end (delta: -524.1 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 12:10:03,094 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.42 ms. Allocated memory is still 58.7 MB. Free memory was 40.3 MB in the beginning and 38.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:10:03,095 INFO L168 Benchmark]: Boogie Preprocessor took 36.05 ms. Allocated memory is still 58.7 MB. Free memory was 38.4 MB in the beginning and 36.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:10:03,095 INFO L168 Benchmark]: RCFGBuilder took 27038.28 ms. Allocated memory was 58.7 MB in the beginning and 88.1 MB in the end (delta: 29.4 MB). Free memory was 36.5 MB in the beginning and 57.9 MB in the end (delta: -21.4 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2020-12-09 12:10:03,095 INFO L168 Benchmark]: TraceAbstraction took 107040.34 ms. Allocated memory is still 88.1 MB. Free memory was 57.6 MB in the beginning and 43.8 MB in the end (delta: 13.7 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:10:03,095 INFO L168 Benchmark]: Witness Printer took 55.65 ms. Allocated memory is still 88.1 MB. Free memory was 43.8 MB in the beginning and 38.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 12:10:03,097 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 58.7 MB. Free memory was 41.6 MB in the beginning and 41.5 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 218.09 ms. Allocated memory is still 58.7 MB. Free memory was 40.0 MB in the beginning and 40.5 MB in the end (delta: -524.1 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.42 ms. Allocated memory is still 58.7 MB. Free memory was 40.3 MB in the beginning and 38.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.05 ms. Allocated memory is still 58.7 MB. Free memory was 38.4 MB in the beginning and 36.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 27038.28 ms. Allocated memory was 58.7 MB in the beginning and 88.1 MB in the end (delta: 29.4 MB). Free memory was 36.5 MB in the beginning and 57.9 MB in the end (delta: -21.4 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 107040.34 ms. Allocated memory is still 88.1 MB. Free memory was 57.6 MB in the beginning and 43.8 MB in the end (delta: 13.7 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Witness Printer took 55.65 ms. Allocated memory is still 88.1 MB. Free memory was 43.8 MB in the beginning and 38.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 142]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 129]: Loop Invariant [2020-12-09 12:10:03,101 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,101 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,101 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,101 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,101 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,102 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,102 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,102 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ~fp.div~DOUBLE(~roundNearestTiesToEven, ~fp.sub~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())), ~Pluszero~LONGDOUBLE()) == \result && 1bv32 == \result - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant [2020-12-09 12:10:03,102 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,102 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,102 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,102 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,103 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,103 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,103 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,103 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ~fp.div~DOUBLE(~roundNearestTiesToEven, ~fp.sub~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())), ~Pluszero~LONGDOUBLE()) == \result - InvariantResult [Line: 78]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant [2020-12-09 12:10:03,103 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,103 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:10:03,104 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 12:10:03,104 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (zero == ~Pluszero~LONGDOUBLE() && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 105.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 98.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 142 SDtfs, 95 SDslu, 243 SDs, 0 SdLazy, 133 SolverSat, 6 SolverUnsat, 37 SolverUnknown, 0 SolverNotchecked, 90.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 6.2s 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, 6 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 14 NumberOfFragments, 51 HoareAnnotationTreeSize, 6 FomulaSimplifications, 59 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 55 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 76 ConstructedInterpolants, 16 QuantifiedInterpolants, 6718 SizeOfPredicates, 37 NumberOfNonLiveVariables, 383 ConjunctsInSsa, 47 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...