./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1121b.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_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1121b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/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 73dc70fc086318c728ead326eb8ef835fee9f9a2 ................................................................................................................................................................................................................................................................................................... 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_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1121b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/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 73dc70fc086318c728ead326eb8ef835fee9f9a2 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:28:25,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:28:25,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:28:25,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:28:25,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:28:25,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:28:25,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:28:25,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:28:25,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:28:25,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:28:25,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:28:25,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:28:25,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:28:25,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:28:25,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:28:25,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:28:25,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:28:25,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:28:25,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:28:25,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:28:25,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:28:25,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:28:25,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:28:25,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:28:25,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:28:25,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:28:25,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:28:25,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:28:25,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:28:25,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:28:25,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:28:25,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:28:25,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:28:25,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:28:25,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:28:25,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:28:25,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:28:25,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:28:25,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:28:25,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:28:25,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:28:25,636 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:28:25,660 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:28:25,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:28:25,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:28:25,671 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:28:25,672 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:28:25,672 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:28:25,672 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:28:25,672 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:28:25,673 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:28:25,673 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:28:25,673 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:28:25,673 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:28:25,673 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:28:25,674 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:28:25,674 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:28:25,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:28:25,675 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:28:25,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:28:25,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:28:25,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:28:25,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:28:25,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:28:25,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:28:25,677 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:28:25,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:28:25,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:28:25,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:28:25,678 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:28:25,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:28:25,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:28:25,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:28:25,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:28:25,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:28:25,679 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:28:25,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:28:25,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:28:25,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:28:25,680 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_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/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 -> 73dc70fc086318c728ead326eb8ef835fee9f9a2 [2019-11-26 02:28:25,826 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:28:25,834 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:28:25,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:28:25,841 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:28:25,842 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:28:25,843 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1121b.c [2019-11-26 02:28:25,896 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/bin/utaipan/data/270db0ca6/232d14108d3346c1b845709080d0b99a/FLAGdf9cb5c76 [2019-11-26 02:28:26,285 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:28:26,286 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/sv-benchmarks/c/float-newlib/float_req_bl_1121b.c [2019-11-26 02:28:26,292 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/bin/utaipan/data/270db0ca6/232d14108d3346c1b845709080d0b99a/FLAGdf9cb5c76 [2019-11-26 02:28:26,302 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/bin/utaipan/data/270db0ca6/232d14108d3346c1b845709080d0b99a [2019-11-26 02:28:26,304 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:28:26,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:28:26,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:28:26,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:28:26,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:28:26,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:28:26" (1/1) ... [2019-11-26 02:28:26,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe35f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:26, skipping insertion in model container [2019-11-26 02:28:26,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:28:26" (1/1) ... [2019-11-26 02:28:26,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:28:26,335 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:28:26,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:28:26,595 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:28:26,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:28:26,676 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:28:26,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:26 WrapperNode [2019-11-26 02:28:26,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:28:26,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:28:26,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:28:26,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:28:26,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:26" (1/1) ... [2019-11-26 02:28:26,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:26" (1/1) ... [2019-11-26 02:28:26,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:28:26,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:28:26,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:28:26,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:28:26,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:26" (1/1) ... [2019-11-26 02:28:26,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:26" (1/1) ... [2019-11-26 02:28:26,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:26" (1/1) ... [2019-11-26 02:28:26,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:26" (1/1) ... [2019-11-26 02:28:26,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:26" (1/1) ... [2019-11-26 02:28:26,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:26" (1/1) ... [2019-11-26 02:28:26,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:26" (1/1) ... [2019-11-26 02:28:26,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:28:26,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:28:26,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:28:26,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:28:26,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/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 02:28:26,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:28:26,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:28:26,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-26 02:28:26,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-26 02:28:26,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:28:26,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:28:26,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:28:26,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-11-26 02:28:26,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:28:27,342 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:28:27,342 INFO L284 CfgBuilder]: Removed 20 assume(true) statements. [2019-11-26 02:28:27,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:28:27 BoogieIcfgContainer [2019-11-26 02:28:27,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:28:27,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:28:27,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:28:27,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:28:27,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:28:26" (1/3) ... [2019-11-26 02:28:27,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca5a1aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:28:27, skipping insertion in model container [2019-11-26 02:28:27,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:26" (2/3) ... [2019-11-26 02:28:27,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca5a1aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:28:27, skipping insertion in model container [2019-11-26 02:28:27,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:28:27" (3/3) ... [2019-11-26 02:28:27,351 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121b.c [2019-11-26 02:28:27,360 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:28:27,365 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:28:27,372 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:28:27,392 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:28:27,392 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:28:27,392 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:28:27,392 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:28:27,392 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:28:27,392 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:28:27,393 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:28:27,393 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:28:27,404 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-11-26 02:28:27,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:28:27,409 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:28:27,410 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:28:27,410 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:28:27,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:28:27,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1340338453, now seen corresponding path program 1 times [2019-11-26 02:28:27,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:28:27,420 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579714996] [2019-11-26 02:28:27,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:28:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:28:27,522 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 02:28:27,523 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579714996] [2019-11-26 02:28:27,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:28:27,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:28:27,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131127791] [2019-11-26 02:28:27,528 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:28:27,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:28:27,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:28:27,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:28:27,542 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-11-26 02:28:27,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:28:27,561 INFO L93 Difference]: Finished difference Result 67 states and 111 transitions. [2019-11-26 02:28:27,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:28:27,562 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-26 02:28:27,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:28:27,571 INFO L225 Difference]: With dead ends: 67 [2019-11-26 02:28:27,571 INFO L226 Difference]: Without dead ends: 32 [2019-11-26 02:28:27,573 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 02:28:27,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-26 02:28:27,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-11-26 02:28:27,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-26 02:28:27,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 44 transitions. [2019-11-26 02:28:27,604 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 44 transitions. Word has length 8 [2019-11-26 02:28:27,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:28:27,605 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 44 transitions. [2019-11-26 02:28:27,605 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:28:27,605 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions. [2019-11-26 02:28:27,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:28:27,605 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:28:27,606 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:28:27,606 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:28:27,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:28:27,606 INFO L82 PathProgramCache]: Analyzing trace with hash 932105592, now seen corresponding path program 1 times [2019-11-26 02:28:27,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:28:27,607 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536144997] [2019-11-26 02:28:27,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:28:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:28:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:28:27,724 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:28:27,725 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:28:27,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:28:27 BoogieIcfgContainer [2019-11-26 02:28:27,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:28:27,752 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:28:27,752 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:28:27,752 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:28:27,753 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:28:27" (3/4) ... [2019-11-26 02:28:27,756 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 02:28:27,756 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:28:27,758 INFO L168 Benchmark]: Toolchain (without parser) took 1452.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -117.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:28:27,759 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:28:27,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -189.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:28:27,760 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.57 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 02:28:27,760 INFO L168 Benchmark]: Boogie Preprocessor took 59.69 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 02:28:27,761 INFO L168 Benchmark]: RCFGBuilder took 539.79 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: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:28:27,762 INFO L168 Benchmark]: TraceAbstraction took 407.76 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:28:27,762 INFO L168 Benchmark]: Witness Printer took 4.32 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 02:28:27,765 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 371.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -189.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 65.57 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 59.69 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 539.79 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: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 407.76 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.32 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 122]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 108, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someUnaryFLOAToperation at line 117, overapproximation of bitwiseXor at line 31, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L116] float x = __VERIFIER_nondet_float(); [L117] float y = -0.0f; [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [one_fmod=1, Zero_fmod={3:0}] [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={3:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={3:0}] [L118] float res = fmod_float(x, y); [L108] return x != x; [L121] COND TRUE !isnan_float(res) [L122] __VERIFIER_error() VAL [one_fmod=1, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 46 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=34occurred 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, 18 NumberOfCodeBlocks, 18 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 02:28:29,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:28:29,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:28:29,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:28:29,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:28:29,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:28:29,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:28:29,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:28:29,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:28:29,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:28:29,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:28:29,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:28:29,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:28:29,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:28:29,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:28:29,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:28:29,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:28:29,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:28:29,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:28:29,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:28:29,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:28:29,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:28:29,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:28:29,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:28:29,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:28:29,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:28:29,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:28:29,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:28:29,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:28:29,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:28:29,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:28:29,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:28:29,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:28:29,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:28:29,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:28:29,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:28:29,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:28:29,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:28:29,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:28:29,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:28:29,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:28:29,627 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:28:29,647 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:28:29,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:28:29,648 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:28:29,648 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:28:29,648 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:28:29,648 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:28:29,649 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:28:29,649 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:28:29,649 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:28:29,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:28:29,650 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:28:29,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:28:29,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:28:29,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:28:29,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:28:29,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:28:29,651 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:28:29,651 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:28:29,652 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:28:29,652 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:28:29,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:28:29,652 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:28:29,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:28:29,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:28:29,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:28:29,653 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:28:29,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:28:29,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:28:29,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:28:29,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:28:29,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:28:29,655 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:28:29,655 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:28:29,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:28:29,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:28:29,656 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_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/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 -> 73dc70fc086318c728ead326eb8ef835fee9f9a2 [2019-11-26 02:28:29,908 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:28:29,924 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:28:29,927 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:28:29,928 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:28:29,929 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:28:29,929 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1121b.c [2019-11-26 02:28:29,989 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/bin/utaipan/data/a6f4ede85/5481d08a95344151a24148ccc86ed07b/FLAGe8aeca97e [2019-11-26 02:28:30,390 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:28:30,391 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/sv-benchmarks/c/float-newlib/float_req_bl_1121b.c [2019-11-26 02:28:30,397 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/bin/utaipan/data/a6f4ede85/5481d08a95344151a24148ccc86ed07b/FLAGe8aeca97e [2019-11-26 02:28:30,826 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/bin/utaipan/data/a6f4ede85/5481d08a95344151a24148ccc86ed07b [2019-11-26 02:28:30,828 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:28:30,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:28:30,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:28:30,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:28:30,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:28:30,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:28:30" (1/1) ... [2019-11-26 02:28:30,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc9e0f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:30, skipping insertion in model container [2019-11-26 02:28:30,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:28:30" (1/1) ... [2019-11-26 02:28:30,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:28:30,861 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:28:31,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:28:31,060 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:28:31,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:28:31,177 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:28:31,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:31 WrapperNode [2019-11-26 02:28:31,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:28:31,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:28:31,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:28:31,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:28:31,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:31" (1/1) ... [2019-11-26 02:28:31,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:31" (1/1) ... [2019-11-26 02:28:31,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:28:31,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:28:31,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:28:31,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:28:31,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:31" (1/1) ... [2019-11-26 02:28:31,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:31" (1/1) ... [2019-11-26 02:28:31,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:31" (1/1) ... [2019-11-26 02:28:31,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:31" (1/1) ... [2019-11-26 02:28:31,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:31" (1/1) ... [2019-11-26 02:28:31,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:31" (1/1) ... [2019-11-26 02:28:31,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:31" (1/1) ... [2019-11-26 02:28:31,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:28:31,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:28:31,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:28:31,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:28:31,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/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 02:28:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2019-11-26 02:28:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:28:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-26 02:28:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:28:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:28:31,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:28:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-26 02:28:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:28:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:28:32,949 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:28:32,949 INFO L284 CfgBuilder]: Removed 20 assume(true) statements. [2019-11-26 02:28:32,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:28:32 BoogieIcfgContainer [2019-11-26 02:28:32,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:28:32,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:28:32,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:28:32,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:28:32,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:28:30" (1/3) ... [2019-11-26 02:28:32,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522b5cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:28:32, skipping insertion in model container [2019-11-26 02:28:32,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:28:31" (2/3) ... [2019-11-26 02:28:32,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522b5cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:28:32, skipping insertion in model container [2019-11-26 02:28:32,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:28:32" (3/3) ... [2019-11-26 02:28:32,956 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121b.c [2019-11-26 02:28:32,963 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:28:32,967 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:28:32,976 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:28:32,993 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:28:32,993 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:28:32,993 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:28:32,993 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:28:32,994 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:28:32,994 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:28:32,994 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:28:32,994 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:28:33,006 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-11-26 02:28:33,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:28:33,012 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:28:33,012 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:28:33,013 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:28:33,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:28:33,016 INFO L82 PathProgramCache]: Analyzing trace with hash 666555284, now seen corresponding path program 1 times [2019-11-26 02:28:33,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:28:33,024 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380320054] [2019-11-26 02:28:33,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/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 02:28:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:28:33,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:28:33,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:28:33,298 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 02:28:33,298 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:28:33,301 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 02:28:33,314 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380320054] [2019-11-26 02:28:33,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:28:33,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:28:33,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107172772] [2019-11-26 02:28:33,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:28:33,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:28:33,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:28:33,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:28:33,332 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2019-11-26 02:28:33,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:28:33,358 INFO L93 Difference]: Finished difference Result 82 states and 138 transitions. [2019-11-26 02:28:33,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:28:33,360 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-26 02:28:33,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:28:33,371 INFO L225 Difference]: With dead ends: 82 [2019-11-26 02:28:33,371 INFO L226 Difference]: Without dead ends: 39 [2019-11-26 02:28:33,374 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 02:28:33,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-26 02:28:33,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-11-26 02:28:33,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-26 02:28:33,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2019-11-26 02:28:33,402 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 10 [2019-11-26 02:28:33,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:28:33,402 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2019-11-26 02:28:33,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:28:33,403 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2019-11-26 02:28:33,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-26 02:28:33,403 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:28:33,403 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:28:33,618 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-26 02:28:33,618 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:28:33,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:28:33,619 INFO L82 PathProgramCache]: Analyzing trace with hash 131116369, now seen corresponding path program 1 times [2019-11-26 02:28:33,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:28:33,620 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229192437] [2019-11-26 02:28:33,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/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 02:28:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:28:33,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-26 02:28:33,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:28:35,464 WARN L192 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2019-11-26 02:28:35,467 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:28:36,912 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 02:28:36,913 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:28:40,741 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_float_~x (_ FloatingPoint 8 24))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_float_~x c_ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2019-11-26 02:28:40,977 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 02:28:40,978 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229192437] [2019-11-26 02:28:40,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:28:40,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2019-11-26 02:28:40,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959520984] [2019-11-26 02:28:40,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-26 02:28:40,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:28:40,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-26 02:28:40,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2019-11-26 02:28:40,981 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand 11 states. [2019-11-26 02:28:46,869 WARN L192 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2019-11-26 02:28:48,236 WARN L192 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2019-11-26 02:28:49,301 WARN L192 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2019-11-26 02:28:49,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:28:49,550 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2019-11-26 02:28:49,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:28:49,551 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2019-11-26 02:28:49,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:28:49,552 INFO L225 Difference]: With dead ends: 44 [2019-11-26 02:28:49,553 INFO L226 Difference]: Without dead ends: 39 [2019-11-26 02:28:49,554 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=51, Invalid=108, Unknown=1, NotChecked=22, Total=182 [2019-11-26 02:28:49,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-26 02:28:49,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-11-26 02:28:49,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-26 02:28:49,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2019-11-26 02:28:49,560 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 12 [2019-11-26 02:28:49,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:28:49,560 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2019-11-26 02:28:49,560 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-26 02:28:49,560 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2019-11-26 02:28:49,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-26 02:28:49,561 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:28:49,562 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:28:49,773 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-26 02:28:49,773 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:28:49,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:28:49,773 INFO L82 PathProgramCache]: Analyzing trace with hash -302456811, now seen corresponding path program 1 times [2019-11-26 02:28:49,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:28:49,779 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82753864] [2019-11-26 02:28:49,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/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 02:28:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:28:49,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 02:28:49,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:28:49,908 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 02:28:49,908 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:28:49,976 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 02:28:49,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82753864] [2019-11-26 02:28:49,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:28:49,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-26 02:28:49,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241338904] [2019-11-26 02:28:49,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:28:49,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:28:49,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:28:49,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:28:49,978 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand 8 states. [2019-11-26 02:28:50,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:28:50,055 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2019-11-26 02:28:50,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:28:50,055 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2019-11-26 02:28:50,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:28:50,055 INFO L225 Difference]: With dead ends: 39 [2019-11-26 02:28:50,055 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:28:50,056 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:28:50,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:28:50,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:28:50,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:28:50,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:28:50,057 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-11-26 02:28:50,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:28:50,057 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:28:50,057 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:28:50,057 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:28:50,057 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:28:50,258 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-26 02:28:50,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:28:50,369 INFO L447 ceAbstractionStarter]: At program point L126(lines 110 127) the Hoare annotation is: true [2019-11-26 02:28:50,369 INFO L444 ceAbstractionStarter]: For program point L52-1(lines 17 105) no Hoare annotation was computed. [2019-11-26 02:28:50,369 INFO L444 ceAbstractionStarter]: For program point L36(lines 36 37) no Hoare annotation was computed. [2019-11-26 02:28:50,369 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:28:50,369 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-26 02:28:50,370 INFO L444 ceAbstractionStarter]: For program point L86(lines 86 103) no Hoare annotation was computed. [2019-11-26 02:28:50,370 INFO L444 ceAbstractionStarter]: For program point L20-1(lines 20 24) no Hoare annotation was computed. [2019-11-26 02:28:50,370 INFO L440 ceAbstractionStarter]: At program point L20-2(lines 20 24) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start_fmod_float_~y (fp.neg (_ +zero 8 24)))) [2019-11-26 02:28:50,370 INFO L444 ceAbstractionStarter]: For program point L70(lines 70 71) no Hoare annotation was computed. [2019-11-26 02:28:50,370 INFO L444 ceAbstractionStarter]: For program point L46(lines 17 105) no Hoare annotation was computed. [2019-11-26 02:28:50,370 INFO L440 ceAbstractionStarter]: At program point L104(lines 17 105) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmod_float_#res| |ULTIMATE.start_fmod_float_#res|)) (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start_fmod_float_~y (fp.neg (_ +zero 8 24)))) [2019-11-26 02:28:50,371 INFO L444 ceAbstractionStarter]: For program point L38(lines 38 39) no Hoare annotation was computed. [2019-11-26 02:28:50,371 INFO L444 ceAbstractionStarter]: For program point L121(lines 121 124) no Hoare annotation was computed. [2019-11-26 02:28:50,372 INFO L444 ceAbstractionStarter]: For program point L88-1(lines 88 92) no Hoare annotation was computed. [2019-11-26 02:28:50,372 INFO L440 ceAbstractionStarter]: At program point L88-2(lines 88 92) the Hoare annotation is: false [2019-11-26 02:28:50,372 INFO L444 ceAbstractionStarter]: For program point L47-2(lines 47 48) no Hoare annotation was computed. [2019-11-26 02:28:50,372 INFO L440 ceAbstractionStarter]: At program point L47-3(lines 47 48) the Hoare annotation is: false [2019-11-26 02:28:50,372 INFO L444 ceAbstractionStarter]: For program point L97-1(lines 97 101) no Hoare annotation was computed. [2019-11-26 02:28:50,372 INFO L440 ceAbstractionStarter]: At program point L97-2(lines 97 101) the Hoare annotation is: false [2019-11-26 02:28:50,372 INFO L444 ceAbstractionStarter]: For program point L97-3(lines 97 101) no Hoare annotation was computed. [2019-11-26 02:28:50,373 INFO L444 ceAbstractionStarter]: For program point L122(line 122) no Hoare annotation was computed. [2019-11-26 02:28:50,373 INFO L444 ceAbstractionStarter]: For program point L40(lines 40 44) no Hoare annotation was computed. [2019-11-26 02:28:50,374 INFO L444 ceAbstractionStarter]: For program point L40-1(lines 17 105) no Hoare annotation was computed. [2019-11-26 02:28:50,374 INFO L444 ceAbstractionStarter]: For program point L65-1(lines 65 74) no Hoare annotation was computed. [2019-11-26 02:28:50,374 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-26 02:28:50,374 INFO L444 ceAbstractionStarter]: For program point L65-3(lines 65 74) no Hoare annotation was computed. [2019-11-26 02:28:50,375 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 122) no Hoare annotation was computed. [2019-11-26 02:28:50,375 INFO L440 ceAbstractionStarter]: At program point L82-2(lines 82 85) the Hoare annotation is: false [2019-11-26 02:28:50,376 INFO L444 ceAbstractionStarter]: For program point L82-3(lines 17 105) no Hoare annotation was computed. [2019-11-26 02:28:50,376 INFO L444 ceAbstractionStarter]: For program point L41-2(lines 41 42) no Hoare annotation was computed. [2019-11-26 02:28:50,376 INFO L440 ceAbstractionStarter]: At program point L41-3(lines 41 42) the Hoare annotation is: false [2019-11-26 02:28:50,376 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:28:50,376 INFO L444 ceAbstractionStarter]: For program point L25(lines 25 29) no Hoare annotation was computed. [2019-11-26 02:28:50,376 INFO L444 ceAbstractionStarter]: For program point L58-1(lines 58 63) no Hoare annotation was computed. [2019-11-26 02:28:50,376 INFO L444 ceAbstractionStarter]: For program point L25-1(lines 17 105) no Hoare annotation was computed. [2019-11-26 02:28:50,377 INFO L444 ceAbstractionStarter]: For program point L25-2(lines 25 29) no Hoare annotation was computed. [2019-11-26 02:28:50,377 INFO L440 ceAbstractionStarter]: At program point L108(line 108) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq |ULTIMATE.start_fmod_float_#res| |ULTIMATE.start_fmod_float_#res|)) (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start_fmod_float_~y (fp.neg (_ +zero 8 24)))) [2019-11-26 02:28:50,377 INFO L444 ceAbstractionStarter]: For program point L67(lines 67 73) no Hoare annotation was computed. [2019-11-26 02:28:50,377 INFO L444 ceAbstractionStarter]: For program point L34(lines 34 35) no Hoare annotation was computed. [2019-11-26 02:28:50,377 INFO L440 ceAbstractionStarter]: At program point L67-2(lines 65 74) the Hoare annotation is: false [2019-11-26 02:28:50,377 INFO L444 ceAbstractionStarter]: For program point L76(lines 76 78) no Hoare annotation was computed. [2019-11-26 02:28:50,377 INFO L444 ceAbstractionStarter]: For program point L76-2(lines 17 105) no Hoare annotation was computed. [2019-11-26 02:28:50,390 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:28:50,392 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:28:50,394 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:28:50,394 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:28:50,396 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:28:50,396 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:28:50,398 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:28:50,398 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:28:50,400 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:28:50,401 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:28:50,401 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:28:50,401 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:28:50,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:28:50 BoogieIcfgContainer [2019-11-26 02:28:50,406 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:28:50,407 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:28:50,407 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:28:50,407 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:28:50,408 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:28:32" (3/4) ... [2019-11-26 02:28:50,411 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:28:50,423 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:28:50,424 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-26 02:28:50,424 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:28:50,474 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a9a4ac7f-25a8-4f3c-9715-f9dc5ddbc805/bin/utaipan/witness.graphml [2019-11-26 02:28:50,474 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:28:50,476 INFO L168 Benchmark]: Toolchain (without parser) took 19647.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 955.1 MB in the beginning and 1.0 GB in the end (delta: -51.8 MB). Peak memory consumption was 107.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:28:50,476 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:28:50,477 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 955.1 MB in the beginning and 1.2 GB in the end (delta: -200.8 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:28:50,477 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:28:50,478 INFO L168 Benchmark]: Boogie Preprocessor took 36.86 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 02:28:50,478 INFO L168 Benchmark]: RCFGBuilder took 1678.67 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:28:50,479 INFO L168 Benchmark]: TraceAbstraction took 17455.10 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: 110.8 MB). Peak memory consumption was 110.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:28:50,479 INFO L168 Benchmark]: Witness Printer took 67.58 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 02:28:50,481 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 349.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 955.1 MB in the beginning and 1.2 GB in the end (delta: -200.8 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 55.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.86 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 1678.67 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 17455.10 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: 110.8 MB). Peak memory consumption was 110.8 MB. Max. memory is 11.5 GB. * Witness Printer took 67.58 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.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 122]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 97]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 82]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 88]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 108]: Loop Invariant [2019-11-26 02:28:50,494 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:28:50,494 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:28:50,495 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:28:50,495 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((1bv32 == \result && !~fp.eq~FLOAT(\result, \result)) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 20]: Loop Invariant [2019-11-26 02:28:50,496 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:28:50,496 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:28:50,497 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:28:50,497 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 17]: Loop Invariant [2019-11-26 02:28:50,497 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:28:50,498 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-26 02:28:50,498 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-26 02:28:50,498 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (!~fp.eq~FLOAT(\result, \result) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 110]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 1 error locations. Result: SAFE, OverallTime: 17.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 111 SDtfs, 111 SDslu, 197 SDs, 0 SdLazy, 38 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 14.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 42 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 11 QuantifiedInterpolants, 4137 SizeOfPredicates, 16 NumberOfNonLiveVariables, 154 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...