./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1381.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_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1381.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/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 fd0f4a3f6b8eda4abc4e025ff55c76ee8ad620a8 ........................................................................................................................................................................................................................................................................................................ 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_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1381.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/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 fd0f4a3f6b8eda4abc4e025ff55c76ee8ad620a8 ........................................................................................................................................................................................................................................................................................................................................................................................................... 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 05:34:07,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:34:07,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:34:07,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:34:07,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:34:07,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:34:07,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:34:07,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:34:07,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:34:07,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:34:07,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:34:07,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:34:07,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:34:07,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:34:07,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:34:07,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:34:07,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:34:07,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:34:07,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:34:07,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:34:07,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:34:07,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:34:07,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:34:07,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:34:07,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:34:07,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:34:07,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:34:07,552 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:34:07,552 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:34:07,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:34:07,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:34:07,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:34:07,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:34:07,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:34:07,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:34:07,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:34:07,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:34:07,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:34:07,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:34:07,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:34:07,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:34:07,559 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 05:34:07,575 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:34:07,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:34:07,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:34:07,576 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:34:07,576 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:34:07,576 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:34:07,577 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:34:07,577 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:34:07,577 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:34:07,577 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:34:07,577 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:34:07,577 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:34:07,577 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:34:07,577 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:34:07,578 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:34:07,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:34:07,578 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:34:07,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:34:07,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:34:07,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:34:07,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:34:07,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:34:07,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:34:07,579 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:34:07,579 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:34:07,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:34:07,579 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:34:07,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:34:07,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:34:07,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:34:07,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:34:07,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:34:07,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:34:07,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:34:07,580 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:34:07,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:34:07,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:34:07,581 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:34:07,581 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:34:07,581 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_0fb7520c-43f9-4416-aa12-0397c237bce0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd0f4a3f6b8eda4abc4e025ff55c76ee8ad620a8 [2020-12-09 05:34:07,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:34:07,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:34:07,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:34:07,796 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:34:07,796 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:34:07,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1381.c [2020-12-09 05:34:07,842 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan/data/ec400c8e6/8dd78ad6d8d54121808f18dee1207a44/FLAGd189eac1d [2020-12-09 05:34:08,205 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:34:08,205 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/sv-benchmarks/c/float-newlib/float_req_bl_1381.c [2020-12-09 05:34:08,210 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan/data/ec400c8e6/8dd78ad6d8d54121808f18dee1207a44/FLAGd189eac1d [2020-12-09 05:34:08,219 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan/data/ec400c8e6/8dd78ad6d8d54121808f18dee1207a44 [2020-12-09 05:34:08,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:34:08,222 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:34:08,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:34:08,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:34:08,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:34:08,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:34:08" (1/1) ... [2020-12-09 05:34:08,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@451607c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:08, skipping insertion in model container [2020-12-09 05:34:08,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:34:08" (1/1) ... [2020-12-09 05:34:08,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:34:08,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:34:08,358 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_0fb7520c-43f9-4416-aa12-0397c237bce0/sv-benchmarks/c/float-newlib/float_req_bl_1381.c[1242,1255] [2020-12-09 05:34:08,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:34:08,366 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:34:08,380 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_0fb7520c-43f9-4416-aa12-0397c237bce0/sv-benchmarks/c/float-newlib/float_req_bl_1381.c[1242,1255] [2020-12-09 05:34:08,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:34:08,392 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:34:08,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:08 WrapperNode [2020-12-09 05:34:08,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:34:08,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:34:08,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:34:08,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:34:08,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:08" (1/1) ... [2020-12-09 05:34:08,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:08" (1/1) ... [2020-12-09 05:34:08,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:34:08,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:34:08,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:34:08,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:34:08,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:08" (1/1) ... [2020-12-09 05:34:08,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:08" (1/1) ... [2020-12-09 05:34:08,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:08" (1/1) ... [2020-12-09 05:34:08,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:08" (1/1) ... [2020-12-09 05:34:08,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:08" (1/1) ... [2020-12-09 05:34:08,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:08" (1/1) ... [2020-12-09 05:34:08,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:08" (1/1) ... [2020-12-09 05:34:08,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:34:08,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:34:08,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:34:08,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:34:08,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/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 05:34:08,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 05:34:08,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:34:08,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-09 05:34:08,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 05:34:08,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-09 05:34:08,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:34:08,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:34:08,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 05:34:08,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 05:34:08,708 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:34:08,708 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-09 05:34:08,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:34:08 BoogieIcfgContainer [2020-12-09 05:34:08,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:34:08,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:34:08,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:34:08,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:34:08,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:34:08" (1/3) ... [2020-12-09 05:34:08,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0c05a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:34:08, skipping insertion in model container [2020-12-09 05:34:08,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:08" (2/3) ... [2020-12-09 05:34:08,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0c05a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:34:08, skipping insertion in model container [2020-12-09 05:34:08,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:34:08" (3/3) ... [2020-12-09 05:34:08,718 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1381.c [2020-12-09 05:34:08,730 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:34:08,733 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 05:34:08,743 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 05:34:08,763 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:34:08,764 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:34:08,764 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:34:08,764 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:34:08,764 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:34:08,764 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:34:08,764 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:34:08,764 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:34:08,776 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-12-09 05:34:08,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 05:34:08,780 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:34:08,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:34:08,781 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:34:08,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:34:08,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1931305588, now seen corresponding path program 1 times [2020-12-09 05:34:08,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:34:08,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758814437] [2020-12-09 05:34:08,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:34:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:34:08,913 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 05:34:08,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758814437] [2020-12-09 05:34:08,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:34:08,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:34:08,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370793727] [2020-12-09 05:34:08,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 05:34:08,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:34:08,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 05:34:08,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:34:08,931 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-12-09 05:34:08,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:34:08,942 INFO L93 Difference]: Finished difference Result 25 states and 37 transitions. [2020-12-09 05:34:08,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 05:34:08,943 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-09 05:34:08,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:34:08,951 INFO L225 Difference]: With dead ends: 25 [2020-12-09 05:34:08,951 INFO L226 Difference]: Without dead ends: 11 [2020-12-09 05:34:08,954 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 05:34:08,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-09 05:34:08,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-09 05:34:08,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-09 05:34:08,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-12-09 05:34:08,982 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 7 [2020-12-09 05:34:08,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:34:08,982 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-12-09 05:34:08,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 05:34:08,982 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-12-09 05:34:08,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 05:34:08,983 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:34:08,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:34:08,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 05:34:08,983 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:34:08,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:34:08,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1496915768, now seen corresponding path program 1 times [2020-12-09 05:34:08,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:34:08,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482760184] [2020-12-09 05:34:08,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:34:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 05:34:09,019 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 05:34:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 05:34:09,051 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 05:34:09,073 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 05:34:09,073 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 05:34:09,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 05:34:09,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:34:09 BoogieIcfgContainer [2020-12-09 05:34:09,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:34:09,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:34:09,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:34:09,098 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:34:09,098 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:34:08" (3/4) ... [2020-12-09 05:34:09,101 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 05:34:09,101 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:34:09,103 INFO L168 Benchmark]: Toolchain (without parser) took 879.69 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 54.9 MB in the beginning and 113.7 MB in the end (delta: -58.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:34:09,103 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 94.4 MB. Free memory is still 71.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:34:09,104 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.38 ms. Allocated memory is still 94.4 MB. Free memory was 54.8 MB in the beginning and 69.0 MB in the end (delta: -14.2 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:34:09,105 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.74 ms. Allocated memory is still 94.4 MB. Free memory was 69.0 MB in the beginning and 67.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:34:09,105 INFO L168 Benchmark]: Boogie Preprocessor took 22.63 ms. Allocated memory is still 94.4 MB. Free memory was 67.4 MB in the beginning and 66.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:34:09,106 INFO L168 Benchmark]: RCFGBuilder took 266.28 ms. Allocated memory is still 94.4 MB. Free memory was 66.1 MB in the beginning and 65.1 MB in the end (delta: 959.6 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 05:34:09,107 INFO L168 Benchmark]: TraceAbstraction took 385.30 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 64.8 MB in the beginning and 113.7 MB in the end (delta: -49.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. [2020-12-09 05:34:09,107 INFO L168 Benchmark]: Witness Printer took 3.30 ms. Allocated memory is still 136.3 MB. Free memory is still 113.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:34:09,111 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 94.4 MB. Free memory is still 71.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 169.38 ms. Allocated memory is still 94.4 MB. Free memory was 54.8 MB in the beginning and 69.0 MB in the end (delta: -14.2 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.74 ms. Allocated memory is still 94.4 MB. Free memory was 69.0 MB in the beginning and 67.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.63 ms. Allocated memory is still 94.4 MB. Free memory was 67.4 MB in the beginning and 66.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 266.28 ms. Allocated memory is still 94.4 MB. Free memory was 66.1 MB in the beginning and 65.1 MB in the end (delta: 959.6 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 385.30 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 64.8 MB in the beginning and 113.7 MB in the end (delta: -49.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. * Witness Printer took 3.30 ms. Allocated memory is still 136.3 MB. Free memory is still 113.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 51]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 35, overapproximation of bitwiseOr at line 28, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L45] float x = 0.0f / 0.0f; [L46] float y = __VERIFIER_nondet_float(); [L15] __uint32_t ix, iy; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (ix) = gf_u.word [L22] ieee_float_shape_type gf_u; [L23] gf_u.value = (y) [L24] EXPR gf_u.word [L24] (iy) = gf_u.word [L27] ieee_float_shape_type sf_u; [L28] sf_u.word = ((ix & 0x7fffffff) | (iy & 0x80000000)) [L29] EXPR sf_u.value [L29] (x) = sf_u.value [L31] return x; [L47] float res = copysign_float(x, y); [L35] return x != x; [L50] COND TRUE !isnan_float(res) [L51] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 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=13occurred 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, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 05:34:10,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:34:10,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:34:10,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:34:10,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:34:10,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:34:10,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:34:10,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:34:10,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:34:10,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:34:10,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:34:10,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:34:10,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:34:10,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:34:10,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:34:10,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:34:10,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:34:10,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:34:10,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:34:10,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:34:10,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:34:10,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:34:10,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:34:10,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:34:10,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:34:10,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:34:10,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:34:10,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:34:10,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:34:10,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:34:10,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:34:10,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:34:10,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:34:10,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:34:10,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:34:10,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:34:10,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:34:10,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:34:10,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:34:10,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:34:10,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:34:10,751 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 05:34:10,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:34:10,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:34:10,778 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:34:10,778 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:34:10,778 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:34:10,778 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:34:10,778 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:34:10,778 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:34:10,778 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:34:10,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:34:10,779 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:34:10,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:34:10,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:34:10,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:34:10,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:34:10,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:34:10,780 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:34:10,780 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 05:34:10,780 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 05:34:10,780 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:34:10,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:34:10,781 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:34:10,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:34:10,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:34:10,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 05:34:10,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:34:10,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:34:10,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:34:10,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:34:10,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:34:10,782 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 05:34:10,782 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 05:34:10,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:34:10,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:34:10,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:34:10,782 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_0fb7520c-43f9-4416-aa12-0397c237bce0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd0f4a3f6b8eda4abc4e025ff55c76ee8ad620a8 [2020-12-09 05:34:11,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:34:11,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:34:11,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:34:11,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:34:11,052 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:34:11,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1381.c [2020-12-09 05:34:11,101 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan/data/39f501f3a/3e3e83774ce04ddbbea8e4b255c869b2/FLAGfdc1a0660 [2020-12-09 05:34:11,473 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:34:11,474 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/sv-benchmarks/c/float-newlib/float_req_bl_1381.c [2020-12-09 05:34:11,478 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan/data/39f501f3a/3e3e83774ce04ddbbea8e4b255c869b2/FLAGfdc1a0660 [2020-12-09 05:34:11,489 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan/data/39f501f3a/3e3e83774ce04ddbbea8e4b255c869b2 [2020-12-09 05:34:11,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:34:11,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:34:11,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:34:11,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:34:11,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:34:11,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:34:11" (1/1) ... [2020-12-09 05:34:11,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d7bc4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:11, skipping insertion in model container [2020-12-09 05:34:11,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:34:11" (1/1) ... [2020-12-09 05:34:11,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:34:11,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:34:11,618 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_0fb7520c-43f9-4416-aa12-0397c237bce0/sv-benchmarks/c/float-newlib/float_req_bl_1381.c[1242,1255] [2020-12-09 05:34:11,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:34:11,629 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:34:11,644 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_0fb7520c-43f9-4416-aa12-0397c237bce0/sv-benchmarks/c/float-newlib/float_req_bl_1381.c[1242,1255] [2020-12-09 05:34:11,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:34:11,658 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:34:11,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:11 WrapperNode [2020-12-09 05:34:11,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:34:11,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:34:11,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:34:11,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:34:11,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:11" (1/1) ... [2020-12-09 05:34:11,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:11" (1/1) ... [2020-12-09 05:34:11,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:34:11,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:34:11,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:34:11,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:34:11,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:11" (1/1) ... [2020-12-09 05:34:11,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:11" (1/1) ... [2020-12-09 05:34:11,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:11" (1/1) ... [2020-12-09 05:34:11,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:11" (1/1) ... [2020-12-09 05:34:11,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:11" (1/1) ... [2020-12-09 05:34:11,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:11" (1/1) ... [2020-12-09 05:34:11,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:11" (1/1) ... [2020-12-09 05:34:11,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:34:11,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:34:11,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:34:11,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:34:11,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/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 05:34:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 05:34:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:34:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-12-09 05:34:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 05:34:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:34:11,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:34:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-12-09 05:34:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 05:34:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 05:34:12,023 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:34:12,023 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-09 05:34:12,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:34:12 BoogieIcfgContainer [2020-12-09 05:34:12,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:34:12,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:34:12,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:34:12,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:34:12,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:34:11" (1/3) ... [2020-12-09 05:34:12,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1ca062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:34:12, skipping insertion in model container [2020-12-09 05:34:12,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:34:11" (2/3) ... [2020-12-09 05:34:12,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1ca062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:34:12, skipping insertion in model container [2020-12-09 05:34:12,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:34:12" (3/3) ... [2020-12-09 05:34:12,032 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1381.c [2020-12-09 05:34:12,053 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:34:12,056 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 05:34:12,068 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 05:34:12,091 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:34:12,091 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:34:12,092 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:34:12,092 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:34:12,092 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:34:12,092 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:34:12,092 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:34:12,092 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:34:12,103 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-12-09 05:34:12,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 05:34:12,107 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:34:12,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:34:12,107 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:34:12,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:34:12,112 INFO L82 PathProgramCache]: Analyzing trace with hash 927449971, now seen corresponding path program 1 times [2020-12-09 05:34:12,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:34:12,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450222869] [2020-12-09 05:34:12,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/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 05:34:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:34:12,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 05:34:12,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:34:12,216 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 05:34:12,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 05:34:12,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450222869] [2020-12-09 05:34:12,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:34:12,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:34:12,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330497328] [2020-12-09 05:34:12,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 05:34:12,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:34:12,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 05:34:12,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:34:12,232 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-12-09 05:34:12,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:34:12,244 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2020-12-09 05:34:12,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 05:34:12,245 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-09 05:34:12,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:34:12,251 INFO L225 Difference]: With dead ends: 32 [2020-12-09 05:34:12,251 INFO L226 Difference]: Without dead ends: 14 [2020-12-09 05:34:12,253 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 05:34:12,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-09 05:34:12,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-12-09 05:34:12,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-09 05:34:12,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-12-09 05:34:12,275 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 10 [2020-12-09 05:34:12,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:34:12,275 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-12-09 05:34:12,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 05:34:12,276 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-12-09 05:34:12,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 05:34:12,276 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:34:12,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:34:12,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 05:34:12,477 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:34:12,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:34:12,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1499794425, now seen corresponding path program 1 times [2020-12-09 05:34:12,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:34:12,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755094024] [2020-12-09 05:34:12,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/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 05:34:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:34:12,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 05:34:12,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:34:12,719 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 05:34:12,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 05:34:12,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755094024] [2020-12-09 05:34:12,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:34:12,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 05:34:12,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683300824] [2020-12-09 05:34:12,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 05:34:12,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:34:12,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 05:34:12,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:34:12,723 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 7 states. [2020-12-09 05:34:12,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:34:12,966 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-12-09 05:34:12,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 05:34:12,966 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-12-09 05:34:12,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:34:12,966 INFO L225 Difference]: With dead ends: 14 [2020-12-09 05:34:12,966 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 05:34:12,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-09 05:34:12,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 05:34:12,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 05:34:12,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 05:34:12,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 05:34:12,968 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-12-09 05:34:12,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:34:12,968 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 05:34:12,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 05:34:12,968 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 05:34:12,968 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 05:34:13,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 05:34:13,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 05:34:13,289 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 05:34:13,290 INFO L258 CegarLoopResult]: At program point L31(lines 14 32) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_copysign_float_#res|)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_copysign_float_~x)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) (fp ((_ extract 31 31) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_copysign_float_~ix~0))))) [2020-12-09 05:34:13,290 INFO L262 CegarLoopResult]: For program point L21(lines 21 25) no Hoare annotation was computed. [2020-12-09 05:34:13,290 INFO L262 CegarLoopResult]: For program point L21-1(lines 14 32) no Hoare annotation was computed. [2020-12-09 05:34:13,290 INFO L262 CegarLoopResult]: For program point L50(lines 50 53) no Hoare annotation was computed. [2020-12-09 05:34:13,290 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 05:34:13,290 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 05:34:13,290 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 05:34:13,290 INFO L262 CegarLoopResult]: For program point L26(lines 26 30) no Hoare annotation was computed. [2020-12-09 05:34:13,290 INFO L262 CegarLoopResult]: For program point L26-1(lines 14 32) no Hoare annotation was computed. [2020-12-09 05:34:13,290 INFO L262 CegarLoopResult]: For program point L26-2(lines 26 30) no Hoare annotation was computed. [2020-12-09 05:34:13,290 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 51) no Hoare annotation was computed. [2020-12-09 05:34:13,290 INFO L265 CegarLoopResult]: At program point L55(lines 37 56) the Hoare annotation is: true [2020-12-09 05:34:13,290 INFO L262 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-12-09 05:34:13,290 INFO L262 CegarLoopResult]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2020-12-09 05:34:13,291 INFO L258 CegarLoopResult]: At program point L16-2(lines 16 20) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_copysign_float_~x)) [2020-12-09 05:34:13,291 INFO L258 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_copysign_float_#res|)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_copysign_float_~x)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) (fp ((_ extract 31 31) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_copysign_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_copysign_float_~ix~0)))) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) [2020-12-09 05:34:13,295 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,295 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,295 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,299 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,300 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,300 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,301 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,301 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,301 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,302 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,302 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,302 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,303 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,303 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:34:13 BoogieIcfgContainer [2020-12-09 05:34:13,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:34:13,308 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:34:13,308 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:34:13,308 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:34:13,309 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:34:12" (3/4) ... [2020-12-09 05:34:13,311 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 05:34:13,317 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-09 05:34:13,317 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-09 05:34:13,317 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 05:34:13,317 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 05:34:13,333 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-12-09 05:34:13,338 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0fb7520c-43f9-4416-aa12-0397c237bce0/bin/utaipan/witness.graphml [2020-12-09 05:34:13,338 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:34:13,339 INFO L168 Benchmark]: Toolchain (without parser) took 1845.77 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 46.5 MB in the beginning and 60.0 MB in the end (delta: -13.5 MB). Peak memory consumption was 913.5 kB. Max. memory is 16.1 GB. [2020-12-09 05:34:13,340 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 65.0 MB. Free memory is still 47.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:34:13,340 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.99 ms. Allocated memory is still 65.0 MB. Free memory was 46.3 MB in the beginning and 35.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 05:34:13,341 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.55 ms. Allocated memory is still 65.0 MB. Free memory was 35.5 MB in the beginning and 49.1 MB in the end (delta: -13.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 05:34:13,341 INFO L168 Benchmark]: Boogie Preprocessor took 22.76 ms. Allocated memory is still 65.0 MB. Free memory was 49.1 MB in the beginning and 47.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:34:13,341 INFO L168 Benchmark]: RCFGBuilder took 297.52 ms. Allocated memory is still 65.0 MB. Free memory was 47.6 MB in the beginning and 32.4 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 05:34:13,342 INFO L168 Benchmark]: TraceAbstraction took 1278.45 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 31.9 MB in the beginning and 31.0 MB in the end (delta: 905.4 kB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2020-12-09 05:34:13,342 INFO L168 Benchmark]: Witness Printer took 30.29 ms. Allocated memory is still 79.7 MB. Free memory was 62.1 MB in the beginning and 60.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:34:13,345 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 65.0 MB. Free memory is still 47.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 163.99 ms. Allocated memory is still 65.0 MB. Free memory was 46.3 MB in the beginning and 35.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.55 ms. Allocated memory is still 65.0 MB. Free memory was 35.5 MB in the beginning and 49.1 MB in the end (delta: -13.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.76 ms. Allocated memory is still 65.0 MB. Free memory was 49.1 MB in the beginning and 47.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 297.52 ms. Allocated memory is still 65.0 MB. Free memory was 47.6 MB in the beginning and 32.4 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1278.45 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 31.9 MB in the beginning and 31.0 MB in the end (delta: 905.4 kB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. * Witness Printer took 30.29 ms. Allocated memory is still 79.7 MB. Free memory was 62.1 MB in the beginning and 60.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - 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: 51]: 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: 14]: Loop Invariant [2020-12-09 05:34:13,350 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,350 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,350 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,350 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,350 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,350 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x)) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0])) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant [2020-12-09 05:34:13,351 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,351 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,351 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,351 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,351 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,351 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x)) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0]))) && 1bv32 == \result - InvariantResult [Line: 16]: Loop Invariant [2020-12-09 05:34:13,352 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 05:34:13,352 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 14 SDslu, 18 SDs, 0 SdLazy, 17 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 67 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 8 QuantifiedInterpolants, 1137 SizeOfPredicates, 14 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...