./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 064927d7c1e3d8158c8524deee46f65d988c7936 ............................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 064927d7c1e3d8158c8524deee46f65d988c7936 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:44:51,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:44:51,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:44:51,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:44:51,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:44:51,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:44:51,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:44:51,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:44:51,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:44:51,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:44:51,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:44:51,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:44:51,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:44:51,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:44:51,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:44:51,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:44:51,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:44:51,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:44:51,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:44:51,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:44:51,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:44:51,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:44:51,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:44:51,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:44:51,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:44:51,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:44:51,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:44:51,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:44:51,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:44:51,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:44:51,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:44:51,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:44:51,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:44:51,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:44:51,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:44:51,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:44:51,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:44:51,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:44:51,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:44:51,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:44:51,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:44:51,614 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:44:51,631 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:44:51,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:44:51,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:44:51,632 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:44:51,632 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:44:51,632 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:44:51,633 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:44:51,633 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:44:51,633 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:44:51,633 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:44:51,634 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:44:51,634 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:44:51,634 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:44:51,634 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:44:51,635 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:44:51,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:44:51,635 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:44:51,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:44:51,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:44:51,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:44:51,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:44:51,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:44:51,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:44:51,637 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:44:51,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:44:51,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:44:51,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:44:51,638 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:44:51,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:44:51,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:44:51,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:44:51,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:44:51,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:44:51,639 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:44:51,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:44:51,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:44:51,640 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:44:51,640 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_f45063cd-f421-4155-924d-a05d6a525d69/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(__VERIFIER_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 -> 064927d7c1e3d8158c8524deee46f65d988c7936 [2019-11-26 02:44:51,785 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:44:51,798 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:44:51,800 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:44:51,807 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:44:51,808 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:44:51,808 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-11-26 02:44:51,865 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/data/1afba3930/9fa21a1b797140d690b806e55cb0d21d/FLAG543830794 [2019-11-26 02:44:52,258 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:44:52,260 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-11-26 02:44:52,266 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/data/1afba3930/9fa21a1b797140d690b806e55cb0d21d/FLAG543830794 [2019-11-26 02:44:52,280 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/data/1afba3930/9fa21a1b797140d690b806e55cb0d21d [2019-11-26 02:44:52,284 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:44:52,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:44:52,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:44:52,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:44:52,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:44:52,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:44:52" (1/1) ... [2019-11-26 02:44:52,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76cb2984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:52, skipping insertion in model container [2019-11-26 02:44:52,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:44:52" (1/1) ... [2019-11-26 02:44:52,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:44:52,323 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:44:52,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:44:52,537 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:44:52,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:44:52,579 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:44:52,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:52 WrapperNode [2019-11-26 02:44:52,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:44:52,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:44:52,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:44:52,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:44:52,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:52" (1/1) ... [2019-11-26 02:44:52,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:52" (1/1) ... [2019-11-26 02:44:52,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:44:52,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:44:52,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:44:52,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:44:52,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:52" (1/1) ... [2019-11-26 02:44:52,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:52" (1/1) ... [2019-11-26 02:44:52,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:52" (1/1) ... [2019-11-26 02:44:52,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:52" (1/1) ... [2019-11-26 02:44:52,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:52" (1/1) ... [2019-11-26 02:44:52,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:52" (1/1) ... [2019-11-26 02:44:52,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:52" (1/1) ... [2019-11-26 02:44:52,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:44:52,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:44:52,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:44:52,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:44:52,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/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 [2019-11-26 02:44:52,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:44:52,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-26 02:44:52,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:44:52,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:44:52,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:44:52,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:44:53,349 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:44:53,349 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-26 02:44:53,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:44:53 BoogieIcfgContainer [2019-11-26 02:44:53,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:44:53,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:44:53,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:44:53,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:44:53,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:44:52" (1/3) ... [2019-11-26 02:44:53,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e120a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:44:53, skipping insertion in model container [2019-11-26 02:44:53,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:52" (2/3) ... [2019-11-26 02:44:53,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e120a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:44:53, skipping insertion in model container [2019-11-26 02:44:53,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:44:53" (3/3) ... [2019-11-26 02:44:53,357 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2019-11-26 02:44:53,366 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:44:53,373 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:44:53,383 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:44:53,404 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:44:53,404 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:44:53,404 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:44:53,404 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:44:53,405 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:44:53,405 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:44:53,405 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:44:53,405 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:44:53,415 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-26 02:44:53,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:44:53,420 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:53,421 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:44:53,421 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:53,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:53,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1376599959, now seen corresponding path program 1 times [2019-11-26 02:44:53,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:44:53,433 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915573939] [2019-11-26 02:44:53,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:44:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:53,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:44:53,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915573939] [2019-11-26 02:44:53,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:44:53,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:44:53,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845953823] [2019-11-26 02:44:53,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:44:53,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:44:53,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:44:53,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:44:53,539 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-11-26 02:44:53,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:44:53,553 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2019-11-26 02:44:53,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:44:53,554 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-26 02:44:53,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:44:53,563 INFO L225 Difference]: With dead ends: 35 [2019-11-26 02:44:53,563 INFO L226 Difference]: Without dead ends: 16 [2019-11-26 02:44:53,566 INFO L630 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 [2019-11-26 02:44:53,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-26 02:44:53,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-26 02:44:53,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-26 02:44:53,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-11-26 02:44:53,595 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2019-11-26 02:44:53,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:44:53,596 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-11-26 02:44:53,596 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:44:53,596 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-11-26 02:44:53,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:44:53,597 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:53,597 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:44:53,597 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:53,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:53,598 INFO L82 PathProgramCache]: Analyzing trace with hash 98148914, now seen corresponding path program 1 times [2019-11-26 02:44:53,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:44:53,598 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582022173] [2019-11-26 02:44:53,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:44:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:44:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:44:53,682 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:44:53,683 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:44:53,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:44:53 BoogieIcfgContainer [2019-11-26 02:44:53,706 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:44:53,707 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:44:53,707 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:44:53,708 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:44:53,708 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:44:53" (3/4) ... [2019-11-26 02:44:53,711 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 02:44:53,711 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:44:53,713 INFO L168 Benchmark]: Toolchain (without parser) took 1426.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -104.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:44:53,714 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:44:53,715 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -175.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:44:53,716 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:44:53,716 INFO L168 Benchmark]: Boogie Preprocessor took 28.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:44:53,717 INFO L168 Benchmark]: RCFGBuilder took 699.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:44:53,717 INFO L168 Benchmark]: TraceAbstraction took 355.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:44:53,718 INFO L168 Benchmark]: Witness Printer took 4.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:44:53,721 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 292.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -175.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 699.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 355.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 74. Possible FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] return 0; [L46] COND TRUE __fpclassify_double(x) == 0 [L47] return y; [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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 0.1.24-6b5699a [2019-11-26 02:44:55,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:44:55,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:44:55,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:44:55,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:44:55,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:44:55,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:44:55,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:44:55,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:44:55,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:44:55,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:44:55,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:44:55,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:44:55,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:44:55,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:44:55,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:44:55,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:44:55,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:44:55,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:44:55,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:44:55,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:44:55,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:44:55,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:44:55,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:44:55,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:44:55,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:44:55,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:44:55,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:44:55,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:44:55,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:44:55,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:44:55,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:44:55,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:44:55,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:44:55,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:44:55,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:44:55,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:44:55,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:44:55,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:44:55,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:44:55,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:44:55,683 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:44:55,703 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:44:55,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:44:55,704 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:44:55,705 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:44:55,705 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:44:55,705 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:44:55,706 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:44:55,706 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:44:55,706 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:44:55,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:44:55,708 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:44:55,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:44:55,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:44:55,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:44:55,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:44:55,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:44:55,710 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:44:55,710 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:44:55,710 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:44:55,710 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:44:55,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:44:55,711 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:44:55,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:44:55,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:44:55,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:44:55,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:44:55,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:44:55,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:44:55,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:44:55,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:44:55,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:44:55,713 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:44:55,714 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:44:55,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:44:55,714 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:44:55,715 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_f45063cd-f421-4155-924d-a05d6a525d69/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(__VERIFIER_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 -> 064927d7c1e3d8158c8524deee46f65d988c7936 [2019-11-26 02:44:56,006 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:44:56,017 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:44:56,020 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:44:56,021 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:44:56,022 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:44:56,022 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-11-26 02:44:56,071 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/data/b06821f25/e4e1f093772b44d49eb20a225f1a3c89/FLAGf7b4f9444 [2019-11-26 02:44:56,388 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:44:56,389 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-11-26 02:44:56,395 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/data/b06821f25/e4e1f093772b44d49eb20a225f1a3c89/FLAGf7b4f9444 [2019-11-26 02:44:56,796 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/data/b06821f25/e4e1f093772b44d49eb20a225f1a3c89 [2019-11-26 02:44:56,800 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:44:56,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:44:56,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:44:56,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:44:56,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:44:56,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:44:56" (1/1) ... [2019-11-26 02:44:56,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d64434c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:56, skipping insertion in model container [2019-11-26 02:44:56,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:44:56" (1/1) ... [2019-11-26 02:44:56,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:44:56,843 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:44:57,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:44:57,071 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:44:57,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:44:57,160 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:44:57,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:57 WrapperNode [2019-11-26 02:44:57,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:44:57,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:44:57,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:44:57,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:44:57,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:57" (1/1) ... [2019-11-26 02:44:57,231 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:57" (1/1) ... [2019-11-26 02:44:57,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:44:57,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:44:57,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:44:57,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:44:57,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:57" (1/1) ... [2019-11-26 02:44:57,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:57" (1/1) ... [2019-11-26 02:44:57,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:57" (1/1) ... [2019-11-26 02:44:57,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:57" (1/1) ... [2019-11-26 02:44:57,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:57" (1/1) ... [2019-11-26 02:44:57,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:57" (1/1) ... [2019-11-26 02:44:57,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:57" (1/1) ... [2019-11-26 02:44:57,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:44:57,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:44:57,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:44:57,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:44:57,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/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 [2019-11-26 02:44:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-26 02:44:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:44:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:44:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:44:57,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:44:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:44:57,841 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:44:57,841 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-26 02:44:57,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:44:57 BoogieIcfgContainer [2019-11-26 02:44:57,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:44:57,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:44:57,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:44:57,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:44:57,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:44:56" (1/3) ... [2019-11-26 02:44:57,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543d0cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:44:57, skipping insertion in model container [2019-11-26 02:44:57,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:44:57" (2/3) ... [2019-11-26 02:44:57,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543d0cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:44:57, skipping insertion in model container [2019-11-26 02:44:57,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:44:57" (3/3) ... [2019-11-26 02:44:57,849 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2019-11-26 02:44:57,858 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:44:57,864 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:44:57,873 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:44:57,893 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:44:57,893 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:44:57,893 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:44:57,893 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:44:57,893 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:44:57,893 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:44:57,893 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:44:57,894 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:44:57,905 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-26 02:44:57,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:44:57,910 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:57,910 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:44:57,911 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:57,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:57,915 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-26 02:44:57,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:44:57,926 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542845824] [2019-11-26 02:44:57,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/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 [2019-11-26 02:44:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:58,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:44:58,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:44:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:44:58,018 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:44:58,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:44:58,027 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542845824] [2019-11-26 02:44:58,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:44:58,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:44:58,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673183503] [2019-11-26 02:44:58,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:44:58,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:44:58,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:44:58,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:44:58,050 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-26 02:44:58,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:44:58,071 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-26 02:44:58,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:44:58,073 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-26 02:44:58,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:44:58,082 INFO L225 Difference]: With dead ends: 62 [2019-11-26 02:44:58,083 INFO L226 Difference]: Without dead ends: 29 [2019-11-26 02:44:58,086 INFO L630 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 [2019-11-26 02:44:58,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-26 02:44:58,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-26 02:44:58,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-26 02:44:58,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-26 02:44:58,112 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-26 02:44:58,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:44:58,113 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-26 02:44:58,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:44:58,113 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-26 02:44:58,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 02:44:58,113 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:58,114 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:44:58,314 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-26 02:44:58,314 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:58,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:58,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-26 02:44:58,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:44:58,316 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113280430] [2019-11-26 02:44:58,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/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 [2019-11-26 02:44:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:58,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:44:58,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:44:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:44:58,438 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:44:58,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:44:58,459 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113280430] [2019-11-26 02:44:58,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:44:58,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:44:58,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096273415] [2019-11-26 02:44:58,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:44:58,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:44:58,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:44:58,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:44:58,462 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-11-26 02:44:58,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:44:58,700 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-11-26 02:44:58,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:44:58,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-26 02:44:58,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:44:58,702 INFO L225 Difference]: With dead ends: 68 [2019-11-26 02:44:58,702 INFO L226 Difference]: Without dead ends: 59 [2019-11-26 02:44:58,703 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:44:58,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-26 02:44:58,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-11-26 02:44:58,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-26 02:44:58,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-26 02:44:58,710 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-26 02:44:58,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:44:58,711 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-26 02:44:58,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:44:58,711 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-26 02:44:58,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-26 02:44:58,712 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:58,712 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:44:58,925 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-26 02:44:58,926 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:58,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:58,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-26 02:44:58,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:44:58,927 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968533465] [2019-11-26 02:44:58,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/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 [2019-11-26 02:44:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:59,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:44:59,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:44:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:44:59,062 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:44:59,088 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:44:59,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:44:59,129 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968533465] [2019-11-26 02:44:59,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:44:59,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:44:59,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976740958] [2019-11-26 02:44:59,130 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:44:59,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:44:59,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:44:59,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:44:59,131 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2019-11-26 02:44:59,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:44:59,259 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-11-26 02:44:59,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:44:59,260 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-11-26 02:44:59,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:44:59,260 INFO L225 Difference]: With dead ends: 52 [2019-11-26 02:44:59,261 INFO L226 Difference]: Without dead ends: 28 [2019-11-26 02:44:59,261 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:44:59,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-26 02:44:59,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-26 02:44:59,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-26 02:44:59,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-11-26 02:44:59,266 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2019-11-26 02:44:59,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:44:59,267 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-11-26 02:44:59,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:44:59,267 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-11-26 02:44:59,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-26 02:44:59,268 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:44:59,268 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:44:59,481 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-26 02:44:59,481 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:44:59,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:44:59,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-11-26 02:44:59,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:44:59,483 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456120129] [2019-11-26 02:44:59,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/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 [2019-11-26 02:44:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:44:59,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:44:59,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:44:59,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:44:59,627 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:44:59,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:44:59,644 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456120129] [2019-11-26 02:44:59,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:44:59,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:44:59,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481770762] [2019-11-26 02:44:59,645 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:44:59,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:44:59,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:44:59,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:44:59,646 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2019-11-26 02:45:00,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:00,009 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2019-11-26 02:45:00,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:45:00,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-26 02:45:00,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:00,010 INFO L225 Difference]: With dead ends: 65 [2019-11-26 02:45:00,010 INFO L226 Difference]: Without dead ends: 56 [2019-11-26 02:45:00,011 INFO L630 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 [2019-11-26 02:45:00,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-26 02:45:00,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2019-11-26 02:45:00,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-26 02:45:00,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-11-26 02:45:00,016 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2019-11-26 02:45:00,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:00,017 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-11-26 02:45:00,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:45:00,017 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-11-26 02:45:00,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-26 02:45:00,018 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:00,018 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:45:00,219 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-26 02:45:00,219 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:45:00,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:00,219 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-11-26 02:45:00,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:45:00,220 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612757264] [2019-11-26 02:45:00,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/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 [2019-11-26 02:45:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:00,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-26 02:45:00,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:00,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:00,368 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:00,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:00,405 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612757264] [2019-11-26 02:45:00,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:45:00,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-26 02:45:00,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432310950] [2019-11-26 02:45:00,406 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:45:00,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:45:00,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:45:00,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:45:00,407 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2019-11-26 02:45:00,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:00,426 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2019-11-26 02:45:00,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:45:00,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-26 02:45:00,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:00,429 INFO L225 Difference]: With dead ends: 40 [2019-11-26 02:45:00,429 INFO L226 Difference]: Without dead ends: 30 [2019-11-26 02:45:00,430 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:45:00,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-26 02:45:00,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-26 02:45:00,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-26 02:45:00,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2019-11-26 02:45:00,435 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2019-11-26 02:45:00,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:00,435 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2019-11-26 02:45:00,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:45:00,436 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2019-11-26 02:45:00,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-26 02:45:00,437 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:00,437 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:45:00,656 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-26 02:45:00,656 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:45:00,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:00,656 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-11-26 02:45:00,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:45:00,657 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493191469] [2019-11-26 02:45:00,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/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 [2019-11-26 02:45:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:00,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 02:45:00,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:00,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:00,807 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:00,808 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:00,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:00,864 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493191469] [2019-11-26 02:45:00,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:45:00,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-26 02:45:00,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759010013] [2019-11-26 02:45:00,866 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-26 02:45:00,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:45:00,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-26 02:45:00,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:45:00,866 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2019-11-26 02:45:00,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:00,991 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-11-26 02:45:00,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:45:00,994 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-26 02:45:00,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:00,994 INFO L225 Difference]: With dead ends: 42 [2019-11-26 02:45:00,995 INFO L226 Difference]: Without dead ends: 39 [2019-11-26 02:45:00,995 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:45:00,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-26 02:45:00,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2019-11-26 02:45:00,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-26 02:45:00,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-11-26 02:45:00,999 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2019-11-26 02:45:00,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:01,000 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-11-26 02:45:01,000 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-26 02:45:01,000 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-11-26 02:45:01,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-26 02:45:01,001 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:01,001 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:45:01,208 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-26 02:45:01,209 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:45:01,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:01,210 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-11-26 02:45:01,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:45:01,211 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161382063] [2019-11-26 02:45:01,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-11-26 02:45:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:01,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:45:01,319 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:01,372 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:01,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:45:01,443 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161382063] [2019-11-26 02:45:01,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:45:01,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-26 02:45:01,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519266097] [2019-11-26 02:45:01,444 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:45:01,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:45:01,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:45:01,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:45:01,445 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2019-11-26 02:45:01,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:01,568 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2019-11-26 02:45:01,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:45:01,569 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-11-26 02:45:01,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:01,570 INFO L225 Difference]: With dead ends: 45 [2019-11-26 02:45:01,570 INFO L226 Difference]: Without dead ends: 27 [2019-11-26 02:45:01,571 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:45:01,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-26 02:45:01,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-26 02:45:01,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-26 02:45:01,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-11-26 02:45:01,575 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2019-11-26 02:45:01,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:01,575 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-11-26 02:45:01,575 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:45:01,576 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-11-26 02:45:01,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-26 02:45:01,576 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:01,576 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:45:01,787 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-26 02:45:01,787 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:45:01,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:01,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-11-26 02:45:01,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:45:01,788 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576791913] [2019-11-26 02:45:01,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-11-26 02:45:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:45:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:45:02,135 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-11-26 02:45:02,135 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:45:02,336 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-26 02:45:02,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:45:02 BoogieIcfgContainer [2019-11-26 02:45:02,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:45:02,366 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:45:02,366 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:45:02,366 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:45:02,367 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:44:57" (3/4) ... [2019-11-26 02:45:02,368 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:45:02,416 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f45063cd-f421-4155-924d-a05d6a525d69/bin/utaipan/witness.graphml [2019-11-26 02:45:02,416 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:45:02,418 INFO L168 Benchmark]: Toolchain (without parser) took 5616.00 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 956.4 MB in the beginning and 852.4 MB in the end (delta: 104.0 MB). Peak memory consumption was 206.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:02,418 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:45:02,419 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.61 ms. Allocated memory is still 1.0 GB. Free memory was 956.4 MB in the beginning and 940.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:02,420 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.52 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -158.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:02,420 INFO L168 Benchmark]: Boogie Preprocessor took 64.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:02,421 INFO L168 Benchmark]: RCFGBuilder took 522.34 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:02,421 INFO L168 Benchmark]: TraceAbstraction took 4523.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 859.2 MB in the end (delta: 206.5 MB). Peak memory consumption was 206.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:02,422 INFO L168 Benchmark]: Witness Printer took 49.88 ms. Allocated memory is still 1.1 GB. Free memory was 859.2 MB in the beginning and 852.4 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:02,425 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 356.61 ms. Allocated memory is still 1.0 GB. Free memory was 956.4 MB in the beginning and 940.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 93.52 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -158.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 64.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 522.34 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4523.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 859.2 MB in the end (delta: 206.5 MB). Peak memory consumption was 206.5 MB. Max. memory is 11.5 GB. * Witness Printer took 49.88 ms. Allocated memory is still 1.1 GB. Free memory was 859.2 MB in the beginning and 852.4 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 80]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L30] return 2; [L46] COND FALSE !(__fpclassify_double(x) == 0) [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L30] return 2; [L48] COND FALSE !(__fpclassify_double(y) == 0) [L51] EXPR x < y ? x : y [L51] return x < y ? x : y; [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L55] __uint32_t msw; [L58] ieee_double_shape_type gh_u; [L59] gh_u.value = (x) [L60] EXPR gh_u.parts.msw [L60] (msw) = gh_u.parts.msw [L63] return (msw & 0x80000000) != 0; [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 4.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 290 SDslu, 362 SDs, 0 SdLazy, 112 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 168 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 7 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 15 QuantifiedInterpolants, 10764 SizeOfPredicates, 27 NumberOfNonLiveVariables, 388 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...