./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/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 3712292932a14caaa681695c17d35c29cbe1c2a4 ...................................................................................................................................................................................................................................................................................................... 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_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/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 3712292932a14caaa681695c17d35c29cbe1c2a4 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:54:33,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:54:33,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:54:33,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:54:33,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:54:33,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:54:33,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:54:33,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:54:33,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:54:33,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:54:33,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:54:33,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:54:33,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:54:33,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:54:33,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:54:33,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:54:33,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:54:33,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:54:33,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:54:33,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:54:33,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:54:33,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:54:33,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:54:33,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:54:33,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:54:33,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:54:33,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:54:33,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:54:33,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:54:33,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:54:33,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:54:33,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:54:33,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:54:33,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:54:33,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:54:33,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:54:33,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:54:33,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:54:33,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:54:33,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:54:33,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:54:33,595 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:54:33,626 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:54:33,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:54:33,631 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:54:33,632 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:54:33,633 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:54:33,633 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:54:33,633 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:54:33,633 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:54:33,634 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:54:33,634 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:54:33,635 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:54:33,636 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:54:33,636 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:54:33,636 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:54:33,637 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:54:33,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:54:33,638 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:54:33,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:54:33,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:54:33,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:54:33,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:54:33,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:54:33,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:54:33,640 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:54:33,640 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:54:33,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:54:33,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:54:33,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:54:33,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:54:33,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:54:33,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:54:33,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:54:33,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:54:33,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:54:33,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:54:33,645 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:54:33,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:54:33,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:54:33,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:54:33,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:54:33,647 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_4d38e9b1-b999-41a5-9177-80a09dfe40e9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3712292932a14caaa681695c17d35c29cbe1c2a4 [2020-11-22 12:54:33,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:54:34,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:54:34,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:54:34,020 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:54:34,021 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:54:34,022 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2020-11-22 12:54:34,105 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/data/efeb076c6/3de374a23d6f4f9bb45f3e396055a93d/FLAGa53f073d6 [2020-11-22 12:54:34,717 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:54:34,718 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2020-11-22 12:54:34,737 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/data/efeb076c6/3de374a23d6f4f9bb45f3e396055a93d/FLAGa53f073d6 [2020-11-22 12:54:35,009 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/data/efeb076c6/3de374a23d6f4f9bb45f3e396055a93d [2020-11-22 12:54:35,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:54:35,014 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:54:35,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:54:35,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:54:35,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:54:35,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:54:35" (1/1) ... [2020-11-22 12:54:35,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e330bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:35, skipping insertion in model container [2020-11-22 12:54:35,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:54:35" (1/1) ... [2020-11-22 12:54:35,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:54:35,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:54:35,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:54:35,305 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:54:35,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:54:35,355 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:54:35,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:35 WrapperNode [2020-11-22 12:54:35,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:54:35,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:54:35,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:54:35,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:54:35,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:35" (1/1) ... [2020-11-22 12:54:35,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:35" (1/1) ... [2020-11-22 12:54:35,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:54:35,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:54:35,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:54:35,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:54:35,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:35" (1/1) ... [2020-11-22 12:54:35,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:35" (1/1) ... [2020-11-22 12:54:35,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:35" (1/1) ... [2020-11-22 12:54:35,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:35" (1/1) ... [2020-11-22 12:54:35,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:35" (1/1) ... [2020-11-22 12:54:35,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:35" (1/1) ... [2020-11-22 12:54:35,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:35" (1/1) ... [2020-11-22 12:54:35,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:54:35,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:54:35,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:54:35,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:54:35,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:54:35,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:54:35,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:54:35,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-22 12:54:35,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:54:35,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:54:35,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 12:54:35,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:54:36,565 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:54:36,565 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-22 12:54:36,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:54:36 BoogieIcfgContainer [2020-11-22 12:54:36,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:54:36,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:54:36,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:54:36,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:54:36,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:54:35" (1/3) ... [2020-11-22 12:54:36,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbe6a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:54:36, skipping insertion in model container [2020-11-22 12:54:36,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:35" (2/3) ... [2020-11-22 12:54:36,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbe6a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:54:36, skipping insertion in model container [2020-11-22 12:54:36,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:54:36" (3/3) ... [2020-11-22 12:54:36,582 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2020-11-22 12:54:36,597 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:54:36,602 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:54:36,624 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:54:36,657 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:54:36,658 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:54:36,658 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:54:36,658 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:54:36,659 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:54:36,659 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:54:36,659 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:54:36,659 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:54:36,674 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-22 12:54:36,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 12:54:36,680 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:36,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:54:36,681 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:36,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:36,688 INFO L82 PathProgramCache]: Analyzing trace with hash 43722941, now seen corresponding path program 1 times [2020-11-22 12:54:36,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:54:36,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174341496] [2020-11-22 12:54:36,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:54:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:54:36,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174341496] [2020-11-22 12:54:36,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:54:36,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:54:36,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804192149] [2020-11-22 12:54:36,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:54:36,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:54:36,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:54:36,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:54:36,888 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-22 12:54:36,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:36,922 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-11-22 12:54:36,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:54:36,923 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-22 12:54:36,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:36,941 INFO L225 Difference]: With dead ends: 27 [2020-11-22 12:54:36,941 INFO L226 Difference]: Without dead ends: 12 [2020-11-22 12:54:36,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:54:37,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-22 12:54:37,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-22 12:54:37,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-22 12:54:37,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-22 12:54:37,042 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2020-11-22 12:54:37,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:37,043 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-22 12:54:37,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:54:37,043 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-22 12:54:37,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:54:37,044 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:37,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:54:37,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:54:37,045 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:37,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:37,048 INFO L82 PathProgramCache]: Analyzing trace with hash 490171576, now seen corresponding path program 1 times [2020-11-22 12:54:37,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:54:37,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870433127] [2020-11-22 12:54:37,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:54:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:54:37,187 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:54:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:54:37,269 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:54:37,322 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 12:54:37,322 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:54:37,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:54:37,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:54:37 BoogieIcfgContainer [2020-11-22 12:54:37,367 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:54:37,369 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:54:37,370 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:54:37,371 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:54:37,371 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:54:36" (3/4) ... [2020-11-22 12:54:37,376 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 12:54:37,376 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:54:37,380 INFO L168 Benchmark]: Toolchain (without parser) took 2363.37 ms. Allocated memory is still 104.9 MB. Free memory was 76.1 MB in the beginning and 72.9 MB in the end (delta: 3.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:54:37,382 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 75.5 MB. Free memory was 38.4 MB in the beginning and 38.4 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:54:37,384 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.92 ms. Allocated memory is still 104.9 MB. Free memory was 76.1 MB in the beginning and 82.2 MB in the end (delta: -6.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:37,386 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.68 ms. Allocated memory is still 104.9 MB. Free memory was 82.2 MB in the beginning and 80.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:37,387 INFO L168 Benchmark]: Boogie Preprocessor took 36.43 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 79.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:37,388 INFO L168 Benchmark]: RCFGBuilder took 1117.00 ms. Allocated memory is still 104.9 MB. Free memory was 79.1 MB in the beginning and 44.0 MB in the end (delta: 35.1 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:37,390 INFO L168 Benchmark]: TraceAbstraction took 797.92 ms. Allocated memory is still 104.9 MB. Free memory was 43.4 MB in the beginning and 72.9 MB in the end (delta: -29.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:54:37,391 INFO L168 Benchmark]: Witness Printer took 7.79 ms. Allocated memory is still 104.9 MB. Free memory is still 72.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:54:37,403 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 75.5 MB. Free memory was 38.4 MB in the beginning and 38.4 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 339.92 ms. Allocated memory is still 104.9 MB. Free memory was 76.1 MB in the beginning and 82.2 MB in the end (delta: -6.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.68 ms. Allocated memory is still 104.9 MB. Free memory was 82.2 MB in the beginning and 80.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.43 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 79.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1117.00 ms. Allocated memory is still 104.9 MB. Free memory was 79.1 MB in the beginning and 44.0 MB in the end (delta: 35.1 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 797.92 ms. Allocated memory is still 104.9 MB. Free memory was 43.4 MB in the beginning and 72.9 MB in the end (delta: -29.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 7.79 ms. Allocated memory is still 104.9 MB. Free memory is still 72.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 46, overapproximation of someBinaryArithmeticFLOAToperation at line 56. Possible FailurePath: [L56] float x = 0.0f / 0.0f; [L57] float y = 0.0f / 0.0f; [L14] __uint32_t w; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L22] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L24-L25] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L27-L28] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L30] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L33] return 0; [L37] COND TRUE __fpclassify_float(x) == 0 [L38] return y; [L58] float res = fmin_float(x, y); [L46] return x != x; [L60] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1230.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 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=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:54:40,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:54:40,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:54:40,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:54:40,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:54:40,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:54:40,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:54:40,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:54:40,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:54:40,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:54:40,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:54:40,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:54:40,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:54:40,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:54:40,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:54:40,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:54:40,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:54:40,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:54:40,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:54:40,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:54:40,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:54:40,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:54:40,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:54:40,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:54:40,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:54:40,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:54:40,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:54:40,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:54:40,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:54:40,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:54:40,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:54:40,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:54:40,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:54:40,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:54:40,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:54:40,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:54:40,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:54:40,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:54:40,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:54:40,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:54:40,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:54:40,705 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 12:54:40,741 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:54:40,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:54:40,742 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:54:40,743 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:54:40,743 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:54:40,744 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:54:40,744 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:54:40,744 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:54:40,744 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:54:40,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:54:40,746 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:54:40,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:54:40,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:54:40,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:54:40,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:54:40,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:54:40,748 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:54:40,748 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 12:54:40,748 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 12:54:40,749 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:54:40,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:54:40,749 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:54:40,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:54:40,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:54:40,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 12:54:40,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:54:40,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:54:40,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:54:40,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:54:40,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:54:40,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:54:40,753 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 12:54:40,753 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 12:54:40,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:54:40,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:54:40,754 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:54:40,754 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_4d38e9b1-b999-41a5-9177-80a09dfe40e9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3712292932a14caaa681695c17d35c29cbe1c2a4 [2020-11-22 12:54:41,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:54:41,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:54:41,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:54:41,296 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:54:41,297 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:54:41,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2020-11-22 12:54:41,409 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/data/b478bb77f/9bcc709fd4c54f8788a4fa32259db92d/FLAG094562750 [2020-11-22 12:54:42,141 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:54:42,142 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2020-11-22 12:54:42,151 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/data/b478bb77f/9bcc709fd4c54f8788a4fa32259db92d/FLAG094562750 [2020-11-22 12:54:42,521 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/data/b478bb77f/9bcc709fd4c54f8788a4fa32259db92d [2020-11-22 12:54:42,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:54:42,526 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:54:42,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:54:42,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:54:42,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:54:42,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:54:42" (1/1) ... [2020-11-22 12:54:42,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6162ab96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:42, skipping insertion in model container [2020-11-22 12:54:42,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:54:42" (1/1) ... [2020-11-22 12:54:42,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:54:42,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:54:42,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:54:42,883 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:54:42,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:54:42,969 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:54:42,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:42 WrapperNode [2020-11-22 12:54:42,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:54:42,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:54:42,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:54:42,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:54:42,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:42" (1/1) ... [2020-11-22 12:54:43,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:42" (1/1) ... [2020-11-22 12:54:43,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:54:43,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:54:43,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:54:43,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:54:43,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:42" (1/1) ... [2020-11-22 12:54:43,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:42" (1/1) ... [2020-11-22 12:54:43,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:42" (1/1) ... [2020-11-22 12:54:43,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:42" (1/1) ... [2020-11-22 12:54:43,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:42" (1/1) ... [2020-11-22 12:54:43,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:42" (1/1) ... [2020-11-22 12:54:43,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:42" (1/1) ... [2020-11-22 12:54:43,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:54:43,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:54:43,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:54:43,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:54:43,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:54:43,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 12:54:43,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:54:43,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-22 12:54:43,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:54:43,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:54:43,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-22 12:54:43,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:54:43,894 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:54:43,895 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-22 12:54:43,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:54:43 BoogieIcfgContainer [2020-11-22 12:54:43,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:54:43,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:54:43,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:54:43,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:54:43,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:54:42" (1/3) ... [2020-11-22 12:54:43,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e709c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:54:43, skipping insertion in model container [2020-11-22 12:54:43,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:54:42" (2/3) ... [2020-11-22 12:54:43,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e709c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:54:43, skipping insertion in model container [2020-11-22 12:54:43,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:54:43" (3/3) ... [2020-11-22 12:54:43,912 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2020-11-22 12:54:43,926 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:54:43,931 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:54:43,946 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:54:43,993 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:54:43,994 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:54:43,994 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:54:43,994 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:54:43,994 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:54:43,995 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:54:43,995 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:54:43,996 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:54:44,016 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-22 12:54:44,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:54:44,023 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:44,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:54:44,025 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:44,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:44,032 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-11-22 12:54:44,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:54:44,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746860286] [2020-11-22 12:54:44,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-22 12:54:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:44,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 12:54:44,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:54:44,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:54:44,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:54:44,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:54:44,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746860286] [2020-11-22 12:54:44,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:54:44,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 12:54:44,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449946670] [2020-11-22 12:54:44,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:54:44,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:54:44,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:54:44,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:54:44,293 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-22 12:54:44,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:44,315 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-11-22 12:54:44,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:54:44,316 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-22 12:54:44,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:44,327 INFO L225 Difference]: With dead ends: 55 [2020-11-22 12:54:44,328 INFO L226 Difference]: Without dead ends: 25 [2020-11-22 12:54:44,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:54:44,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-22 12:54:44,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-22 12:54:44,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-22 12:54:44,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-22 12:54:44,372 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-11-22 12:54:44,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:44,372 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-22 12:54:44,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:54:44,373 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-22 12:54:44,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:54:44,374 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:44,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:54:44,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 12:54:44,591 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:44,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:44,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-11-22 12:54:44,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:54:44,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84219333] [2020-11-22 12:54:44,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-22 12:54:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:44,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:54:44,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:54:44,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:54:44,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:54:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:54:44,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84219333] [2020-11-22 12:54:44,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:54:44,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-22 12:54:44,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716056412] [2020-11-22 12:54:44,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:54:44,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:54:44,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:54:44,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:54:44,809 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2020-11-22 12:54:45,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:45,006 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-11-22 12:54:45,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:54:45,008 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-22 12:54:45,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:45,009 INFO L225 Difference]: With dead ends: 52 [2020-11-22 12:54:45,009 INFO L226 Difference]: Without dead ends: 47 [2020-11-22 12:54:45,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:54:45,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-22 12:54:45,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-22 12:54:45,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-22 12:54:45,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-22 12:54:45,019 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-11-22 12:54:45,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:45,026 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-22 12:54:45,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:54:45,027 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-22 12:54:45,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 12:54:45,029 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:45,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:54:45,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 12:54:45,244 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:45,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:45,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-11-22 12:54:45,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:54:45,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868265066] [2020-11-22 12:54:45,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-22 12:54:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:45,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-22 12:54:45,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:54:45,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:54:45,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:54:45,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:54:45,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868265066] [2020-11-22 12:54:45,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:54:45,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-22 12:54:45,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166312015] [2020-11-22 12:54:45,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 12:54:45,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:54:45,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 12:54:45,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-22 12:54:45,710 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2020-11-22 12:54:46,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:46,133 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-11-22 12:54:46,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:54:46,134 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-22 12:54:46,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:46,135 INFO L225 Difference]: With dead ends: 36 [2020-11-22 12:54:46,135 INFO L226 Difference]: Without dead ends: 27 [2020-11-22 12:54:46,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-22 12:54:46,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-22 12:54:46,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-11-22 12:54:46,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-22 12:54:46,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2020-11-22 12:54:46,142 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2020-11-22 12:54:46,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:46,142 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2020-11-22 12:54:46,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 12:54:46,143 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-11-22 12:54:46,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 12:54:46,143 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:46,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:54:46,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 12:54:46,345 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:46,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:46,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2020-11-22 12:54:46,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:54:46,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48710044] [2020-11-22 12:54:46,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-22 12:54:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:46,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:54:46,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:54:46,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:54:46,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:54:46,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:54:46,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48710044] [2020-11-22 12:54:46,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:54:46,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-22 12:54:46,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563104533] [2020-11-22 12:54:46,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:54:46,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:54:46,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:54:46,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:54:46,496 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2020-11-22 12:54:46,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:46,686 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-11-22 12:54:46,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:54:46,690 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-22 12:54:46,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:46,691 INFO L225 Difference]: With dead ends: 52 [2020-11-22 12:54:46,691 INFO L226 Difference]: Without dead ends: 47 [2020-11-22 12:54:46,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:54:46,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-22 12:54:46,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-22 12:54:46,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-22 12:54:46,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-22 12:54:46,706 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2020-11-22 12:54:46,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:46,706 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-22 12:54:46,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:54:46,707 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-11-22 12:54:46,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 12:54:46,708 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:46,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:54:46,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 12:54:46,909 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:46,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:46,910 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2020-11-22 12:54:46,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:54:46,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48330333] [2020-11-22 12:54:46,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-22 12:54:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:47,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-22 12:54:47,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:54:47,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:54:47,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:54:47,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:54:47,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48330333] [2020-11-22 12:54:47,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:54:47,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-22 12:54:47,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343323481] [2020-11-22 12:54:47,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-22 12:54:47,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:54:47,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-22 12:54:47,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-22 12:54:47,419 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2020-11-22 12:54:47,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:47,870 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-11-22 12:54:47,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 12:54:47,872 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-11-22 12:54:47,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:47,873 INFO L225 Difference]: With dead ends: 32 [2020-11-22 12:54:47,873 INFO L226 Difference]: Without dead ends: 23 [2020-11-22 12:54:47,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-11-22 12:54:47,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-22 12:54:47,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-22 12:54:47,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-22 12:54:47,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-22 12:54:47,887 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2020-11-22 12:54:47,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:47,888 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-22 12:54:47,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-22 12:54:47,888 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-22 12:54:47,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-22 12:54:47,890 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:54:47,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:54:48,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 12:54:48,104 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:54:48,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:54:48,105 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2020-11-22 12:54:48,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:54:48,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383749904] [2020-11-22 12:54:48,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-22 12:54:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:54:48,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-22 12:54:48,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:54:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:54:48,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:54:48,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:54:48,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383749904] [2020-11-22 12:54:48,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:54:48,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-22 12:54:48,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518071515] [2020-11-22 12:54:48,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 12:54:48,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:54:48,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 12:54:48,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-22 12:54:48,469 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2020-11-22 12:54:48,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:54:48,772 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-11-22 12:54:48,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:54:48,772 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-11-22 12:54:48,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:54:48,773 INFO L225 Difference]: With dead ends: 23 [2020-11-22 12:54:48,773 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:54:48,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-22 12:54:48,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:54:48,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:54:48,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:54:48,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:54:48,775 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-22 12:54:48,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:54:48,775 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:54:48,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 12:54:48,775 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:54:48,775 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:54:48,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-22 12:54:48,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:54:49,206 INFO L274 CegarLoopResult]: For program point L60(lines 60 63) no Hoare annotation was computed. [2020-11-22 12:54:49,207 INFO L274 CegarLoopResult]: For program point L27(lines 27 33) no Hoare annotation was computed. [2020-11-22 12:54:49,207 INFO L274 CegarLoopResult]: For program point L27-1(lines 27 33) no Hoare annotation was computed. [2020-11-22 12:54:49,207 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-22 12:54:49,207 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-22 12:54:49,207 INFO L277 CegarLoopResult]: At program point L65(lines 48 66) the Hoare annotation is: true [2020-11-22 12:54:49,207 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-22 12:54:49,207 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:54:49,207 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-22 12:54:49,208 INFO L274 CegarLoopResult]: For program point L24(lines 24 33) no Hoare annotation was computed. [2020-11-22 12:54:49,208 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-22 12:54:49,208 INFO L274 CegarLoopResult]: For program point L24-1(lines 24 33) no Hoare annotation was computed. [2020-11-22 12:54:49,208 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2020-11-22 12:54:49,208 INFO L270 CegarLoopResult]: At program point L16-2(lines 16 20) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x))) [2020-11-22 12:54:49,208 INFO L274 CegarLoopResult]: For program point L16-3(lines 13 34) no Hoare annotation was computed. [2020-11-22 12:54:49,208 INFO L274 CegarLoopResult]: For program point L16-5(lines 16 20) no Hoare annotation was computed. [2020-11-22 12:54:49,208 INFO L270 CegarLoopResult]: At program point L16-6(lines 16 20) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x))) [2020-11-22 12:54:49,209 INFO L274 CegarLoopResult]: For program point L16-7(lines 13 34) no Hoare annotation was computed. [2020-11-22 12:54:49,209 INFO L274 CegarLoopResult]: For program point L37(lines 37 38) no Hoare annotation was computed. [2020-11-22 12:54:49,209 INFO L270 CegarLoopResult]: At program point L33(lines 13 34) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x))) [2020-11-22 12:54:49,209 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:54:49,209 INFO L270 CegarLoopResult]: At program point L33-1(lines 13 34) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)))) (or (and .cse0 (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x))) (and (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) .cse0))) [2020-11-22 12:54:49,209 INFO L270 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq |ULTIMATE.start_fmin_float_#res| |ULTIMATE.start_fmin_float_#res|)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2020-11-22 12:54:49,209 INFO L274 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-11-22 12:54:49,209 INFO L274 CegarLoopResult]: For program point L42-2(line 42) no Hoare annotation was computed. [2020-11-22 12:54:49,209 INFO L270 CegarLoopResult]: At program point L42-3(lines 36 43) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmin_float_#res| |ULTIMATE.start_fmin_float_#res|)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2020-11-22 12:54:49,210 INFO L274 CegarLoopResult]: For program point L30(lines 30 33) no Hoare annotation was computed. [2020-11-22 12:54:49,210 INFO L274 CegarLoopResult]: For program point L30-1(lines 30 33) no Hoare annotation was computed. [2020-11-22 12:54:49,210 INFO L274 CegarLoopResult]: For program point L39(lines 39 40) no Hoare annotation was computed. [2020-11-22 12:54:49,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:54:49 BoogieIcfgContainer [2020-11-22 12:54:49,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:54:49,230 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:54:49,230 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:54:49,230 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:54:49,231 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:54:43" (3/4) ... [2020-11-22 12:54:49,234 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:54:49,248 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-22 12:54:49,248 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-22 12:54:49,249 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:54:49,249 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:54:49,279 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~FLOAT(\result, \result) && !~fp.eq~FLOAT(y, y) [2020-11-22 12:54:49,280 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && !~fp.eq~FLOAT(\result, \result)) && !~fp.eq~FLOAT(y, y) [2020-11-22 12:54:49,281 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x)) || (!(0bv32 == \result) && !~fp.eq~FLOAT(y, y)) [2020-11-22 12:54:49,316 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4d38e9b1-b999-41a5-9177-80a09dfe40e9/bin/utaipan/witness.graphml [2020-11-22 12:54:49,317 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:54:49,319 INFO L168 Benchmark]: Toolchain (without parser) took 6792.02 ms. Allocated memory was 54.5 MB in the beginning and 83.9 MB in the end (delta: 29.4 MB). Free memory was 32.2 MB in the beginning and 24.8 MB in the end (delta: 7.4 MB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:49,320 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 54.5 MB. Free memory was 37.0 MB in the beginning and 36.9 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:54:49,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.45 ms. Allocated memory is still 54.5 MB. Free memory was 32.1 MB in the beginning and 35.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:49,322 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.06 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 35.0 MB in the beginning and 53.1 MB in the end (delta: -18.1 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:49,323 INFO L168 Benchmark]: Boogie Preprocessor took 83.24 ms. Allocated memory is still 69.2 MB. Free memory was 53.1 MB in the beginning and 51.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:49,323 INFO L168 Benchmark]: RCFGBuilder took 754.51 ms. Allocated memory is still 69.2 MB. Free memory was 51.5 MB in the beginning and 48.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:49,324 INFO L168 Benchmark]: TraceAbstraction took 5326.62 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 48.4 MB in the beginning and 27.8 MB in the end (delta: 20.6 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:49,325 INFO L168 Benchmark]: Witness Printer took 87.32 ms. Allocated memory is still 83.9 MB. Free memory was 27.8 MB in the beginning and 24.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:54:49,329 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 54.5 MB. Free memory was 37.0 MB in the beginning and 36.9 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 444.45 ms. Allocated memory is still 54.5 MB. Free memory was 32.1 MB in the beginning and 35.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.06 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 35.0 MB in the beginning and 53.1 MB in the end (delta: -18.1 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 83.24 ms. Allocated memory is still 69.2 MB. Free memory was 53.1 MB in the beginning and 51.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 754.51 ms. Allocated memory is still 69.2 MB. Free memory was 51.5 MB in the beginning and 48.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5326.62 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 48.4 MB in the beginning and 27.8 MB in the end (delta: 20.6 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. * Witness Printer took 87.32 ms. Allocated memory is still 83.9 MB. Free memory was 27.8 MB in the beginning and 24.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: (!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x)) || (!(0bv32 == \result) && !~fp.eq~FLOAT(y, y)) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(\result, \result) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (1bv32 == \result && !~fp.eq~FLOAT(\result, \result)) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 182 SDtfs, 117 SDslu, 549 SDs, 0 SdLazy, 138 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 68 HoareAnnotationTreeSize, 7 FomulaSimplifications, 213 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8466 SizeOfPredicates, 32 NumberOfNonLiveVariables, 375 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...