./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.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_a7c430e1-5144-4d4f-a7ea-052918509557/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/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 69b156b7cb8e47e9e9902f33725c5b7467b2d17a ............................................................................................................................................................................................................................................................................................... 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_a7c430e1-5144-4d4f-a7ea-052918509557/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/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 69b156b7cb8e47e9e9902f33725c5b7467b2d17a ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:42:50,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:42:50,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:42:50,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:42:50,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:42:50,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:42:50,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:42:50,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:42:50,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:42:50,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:42:50,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:42:50,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:42:50,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:42:50,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:42:50,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:42:50,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:42:50,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:42:50,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:42:50,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:42:50,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:42:50,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:42:50,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:42:50,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:42:50,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:42:50,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:42:50,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:42:50,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:42:50,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:42:50,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:42:50,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:42:50,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:42:50,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:42:50,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:42:50,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:42:50,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:42:50,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:42:50,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:42:50,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:42:50,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:42:50,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:42:50,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:42:50,713 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:42:50,726 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:42:50,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:42:50,727 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:42:50,727 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:42:50,728 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:42:50,728 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:42:50,728 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:42:50,728 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:42:50,728 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:42:50,729 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:42:50,729 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:42:50,729 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:42:50,729 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:42:50,730 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:42:50,730 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:42:50,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:42:50,731 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:42:50,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:42:50,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:42:50,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:42:50,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:42:50,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:42:50,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:42:50,732 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:42:50,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:42:50,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:42:50,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:42:50,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:42:50,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:42:50,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:42:50,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:42:50,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:42:50,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:42:50,734 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:42:50,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:42:50,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:42:50,735 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:42:50,735 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_a7c430e1-5144-4d4f-a7ea-052918509557/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 -> 69b156b7cb8e47e9e9902f33725c5b7467b2d17a [2019-11-26 02:42:50,903 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:42:50,916 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:42:50,919 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:42:50,920 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:42:50,920 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:42:50,921 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-11-26 02:42:50,964 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/bin/utaipan/data/4bf54d44b/a003fcbd686542acab125309e5f97650/FLAG9faa0af42 [2019-11-26 02:42:51,352 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:42:51,352 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-11-26 02:42:51,358 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/bin/utaipan/data/4bf54d44b/a003fcbd686542acab125309e5f97650/FLAG9faa0af42 [2019-11-26 02:42:51,749 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/bin/utaipan/data/4bf54d44b/a003fcbd686542acab125309e5f97650 [2019-11-26 02:42:51,752 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:42:51,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:42:51,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:42:51,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:42:51,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:42:51,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:42:51" (1/1) ... [2019-11-26 02:42:51,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@df7037e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:51, skipping insertion in model container [2019-11-26 02:42:51,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:42:51" (1/1) ... [2019-11-26 02:42:51,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:42:51,789 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:42:52,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:42:52,005 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:42:52,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:42:52,054 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:42:52,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:52 WrapperNode [2019-11-26 02:42:52,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:42:52,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:42:52,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:42:52,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:42:52,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:52" (1/1) ... [2019-11-26 02:42:52,071 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:52" (1/1) ... [2019-11-26 02:42:52,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:42:52,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:42:52,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:42:52,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:42:52,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:52" (1/1) ... [2019-11-26 02:42:52,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:52" (1/1) ... [2019-11-26 02:42:52,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:52" (1/1) ... [2019-11-26 02:42:52,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:52" (1/1) ... [2019-11-26 02:42:52,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:52" (1/1) ... [2019-11-26 02:42:52,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:52" (1/1) ... [2019-11-26 02:42:52,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:52" (1/1) ... [2019-11-26 02:42:52,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:42:52,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:42:52,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:42:52,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:42:52,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/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 02:42:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-26 02:42:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:42:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-26 02:42:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:42:52,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:42:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:42:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:42:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:42:52,843 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:42:52,843 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-26 02:42:52,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:42:52 BoogieIcfgContainer [2019-11-26 02:42:52,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:42:52,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:42:52,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:42:52,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:42:52,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:42:51" (1/3) ... [2019-11-26 02:42:52,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad1a8cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:42:52, skipping insertion in model container [2019-11-26 02:42:52,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:52" (2/3) ... [2019-11-26 02:42:52,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad1a8cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:42:52, skipping insertion in model container [2019-11-26 02:42:52,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:42:52" (3/3) ... [2019-11-26 02:42:52,851 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2019-11-26 02:42:52,867 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:42:52,872 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:42:52,880 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:42:52,901 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:42:52,901 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:42:52,901 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:42:52,901 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:42:52,902 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:42:52,902 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:42:52,902 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:42:52,902 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:42:52,915 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-11-26 02:42:52,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:42:52,921 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:42:52,922 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:42:52,922 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:42:52,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:42:52,928 INFO L82 PathProgramCache]: Analyzing trace with hash -427355386, now seen corresponding path program 1 times [2019-11-26 02:42:52,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:42:52,937 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738051194] [2019-11-26 02:42:52,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:42:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:42:53,039 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 02:42:53,040 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738051194] [2019-11-26 02:42:53,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:42:53,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:42:53,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535655990] [2019-11-26 02:42:53,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:42:53,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:42:53,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:42:53,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:42:53,061 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-11-26 02:42:53,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:42:53,077 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2019-11-26 02:42:53,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:42:53,078 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-26 02:42:53,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:42:53,087 INFO L225 Difference]: With dead ends: 43 [2019-11-26 02:42:53,088 INFO L226 Difference]: Without dead ends: 20 [2019-11-26 02:42:53,090 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 02:42:53,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-26 02:42:53,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-26 02:42:53,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-26 02:42:53,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2019-11-26 02:42:53,119 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 9 [2019-11-26 02:42:53,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:42:53,120 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2019-11-26 02:42:53,120 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:42:53,120 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2019-11-26 02:42:53,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:42:53,121 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:42:53,121 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:42:53,121 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:42:53,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:42:53,122 INFO L82 PathProgramCache]: Analyzing trace with hash -335962293, now seen corresponding path program 1 times [2019-11-26 02:42:53,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:42:53,122 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380671956] [2019-11-26 02:42:53,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:42:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:42:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:42:53,194 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:42:53,195 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:42:53,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:42:53 BoogieIcfgContainer [2019-11-26 02:42:53,232 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:42:53,232 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:42:53,232 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:42:53,233 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:42:53,233 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:42:52" (3/4) ... [2019-11-26 02:42:53,236 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 02:42:53,236 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:42:53,239 INFO L168 Benchmark]: Toolchain (without parser) took 1484.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -112.9 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:42:53,239 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:42:53,241 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -190.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:42:53,242 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.63 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 02:42:53,242 INFO L168 Benchmark]: Boogie Preprocessor took 69.42 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 02:42:53,243 INFO L168 Benchmark]: RCFGBuilder took 675.54 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: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:42:53,243 INFO L168 Benchmark]: TraceAbstraction took 386.52 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: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:42:53,244 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 02:42:53,251 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 299.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -190.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.63 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 69.42 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 675.54 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: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 386.52 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: 26.9 MB). Peak memory consumption was 26.9 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: 103]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 98, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of someBinaryDOUBLEComparisonOperation at line 102. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L98] double x = -0.0; [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L26] COND FALSE !(j0 < 20) VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L47] COND TRUE j0 > 51 [L48] COND FALSE !(j0 == 0x400) [L51] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L99] double res = floor_double(x); [L102] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L102] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L103] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 27 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=22occurred 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, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 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 02:42:54,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:42:54,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:42:54,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:42:54,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:42:54,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:42:54,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:42:54,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:42:55,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:42:55,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:42:55,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:42:55,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:42:55,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:42:55,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:42:55,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:42:55,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:42:55,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:42:55,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:42:55,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:42:55,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:42:55,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:42:55,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:42:55,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:42:55,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:42:55,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:42:55,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:42:55,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:42:55,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:42:55,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:42:55,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:42:55,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:42:55,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:42:55,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:42:55,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:42:55,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:42:55,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:42:55,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:42:55,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:42:55,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:42:55,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:42:55,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:42:55,048 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:42:55,076 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:42:55,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:42:55,078 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:42:55,078 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:42:55,079 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:42:55,079 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:42:55,079 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:42:55,080 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:42:55,080 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:42:55,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:42:55,081 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:42:55,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:42:55,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:42:55,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:42:55,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:42:55,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:42:55,083 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:42:55,083 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:42:55,084 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:42:55,084 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:42:55,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:42:55,084 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:42:55,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:42:55,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:42:55,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:42:55,085 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:42:55,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:42:55,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:42:55,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:42:55,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:42:55,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:42:55,087 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:42:55,087 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:42:55,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:42:55,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:42:55,088 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_a7c430e1-5144-4d4f-a7ea-052918509557/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 -> 69b156b7cb8e47e9e9902f33725c5b7467b2d17a [2019-11-26 02:42:55,405 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:42:55,424 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:42:55,428 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:42:55,429 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:42:55,430 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:42:55,430 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-11-26 02:42:55,477 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/bin/utaipan/data/860dcc6cb/9993bc9db6b047b585378788966c07cc/FLAG5e85edaf9 [2019-11-26 02:42:55,863 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:42:55,864 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-11-26 02:42:55,870 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/bin/utaipan/data/860dcc6cb/9993bc9db6b047b585378788966c07cc/FLAG5e85edaf9 [2019-11-26 02:42:55,881 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/bin/utaipan/data/860dcc6cb/9993bc9db6b047b585378788966c07cc [2019-11-26 02:42:55,883 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:42:55,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:42:55,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:42:55,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:42:55,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:42:55,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:42:55" (1/1) ... [2019-11-26 02:42:55,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@456f0b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:55, skipping insertion in model container [2019-11-26 02:42:55,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:42:55" (1/1) ... [2019-11-26 02:42:55,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:42:55,916 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:42:56,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:42:56,072 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:42:56,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:42:56,222 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:42:56,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:56 WrapperNode [2019-11-26 02:42:56,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:42:56,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:42:56,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:42:56,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:42:56,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:56" (1/1) ... [2019-11-26 02:42:56,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:56" (1/1) ... [2019-11-26 02:42:56,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:42:56,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:42:56,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:42:56,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:42:56,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:56" (1/1) ... [2019-11-26 02:42:56,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:56" (1/1) ... [2019-11-26 02:42:56,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:56" (1/1) ... [2019-11-26 02:42:56,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:56" (1/1) ... [2019-11-26 02:42:56,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:56" (1/1) ... [2019-11-26 02:42:56,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:56" (1/1) ... [2019-11-26 02:42:56,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:56" (1/1) ... [2019-11-26 02:42:56,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:42:56,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:42:56,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:42:56,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:42:56,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/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 02:42:56,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-11-26 02:42:56,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-26 02:42:56,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:42:56,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:42:56,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:42:56,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:42:56,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:42:56,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:42:57,466 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:42:57,466 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-26 02:42:57,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:42:57 BoogieIcfgContainer [2019-11-26 02:42:57,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:42:57,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:42:57,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:42:57,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:42:57,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:42:55" (1/3) ... [2019-11-26 02:42:57,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e41019c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:42:57, skipping insertion in model container [2019-11-26 02:42:57,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:56" (2/3) ... [2019-11-26 02:42:57,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e41019c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:42:57, skipping insertion in model container [2019-11-26 02:42:57,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:42:57" (3/3) ... [2019-11-26 02:42:57,475 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2019-11-26 02:42:57,483 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:42:57,489 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:42:57,499 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:42:57,519 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:42:57,519 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:42:57,519 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:42:57,519 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:42:57,519 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:42:57,519 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:42:57,519 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:42:57,519 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:42:57,530 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-11-26 02:42:57,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 02:42:57,535 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:42:57,536 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:42:57,536 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:42:57,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:42:57,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2019-11-26 02:42:57,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:42:57,549 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955488517] [2019-11-26 02:42:57,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/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 02:42:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:42:57,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:42:57,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:42:57,645 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 02:42:57,645 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:42:57,649 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 02:42:57,653 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955488517] [2019-11-26 02:42:57,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:42:57,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:42:57,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044649528] [2019-11-26 02:42:57,659 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:42:57,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:42:57,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:42:57,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:42:57,670 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-11-26 02:42:57,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:42:57,686 INFO L93 Difference]: Finished difference Result 74 states and 118 transitions. [2019-11-26 02:42:57,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:42:57,687 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-26 02:42:57,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:42:57,697 INFO L225 Difference]: With dead ends: 74 [2019-11-26 02:42:57,697 INFO L226 Difference]: Without dead ends: 35 [2019-11-26 02:42:57,700 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 02:42:57,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-26 02:42:57,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-11-26 02:42:57,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-26 02:42:57,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2019-11-26 02:42:57,730 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2019-11-26 02:42:57,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:42:57,730 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-11-26 02:42:57,730 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:42:57,730 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2019-11-26 02:42:57,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-26 02:42:57,731 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:42:57,731 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:42:57,933 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-26 02:42:57,934 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:42:57,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:42:57,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2019-11-26 02:42:57,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:42:57,939 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692136412] [2019-11-26 02:42:57,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/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 02:42:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:42:58,085 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 02:42:58,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:42:58,162 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 02:42:58,162 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:42:58,238 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 02:42:58,238 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692136412] [2019-11-26 02:42:58,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:42:58,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-26 02:42:58,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463446342] [2019-11-26 02:42:58,241 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:42:58,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:42:58,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:42:58,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:42:58,243 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand 8 states. [2019-11-26 02:42:58,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:42:58,627 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2019-11-26 02:42:58,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:42:58,628 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2019-11-26 02:42:58,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:42:58,629 INFO L225 Difference]: With dead ends: 59 [2019-11-26 02:42:58,629 INFO L226 Difference]: Without dead ends: 34 [2019-11-26 02:42:58,630 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:42:58,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-26 02:42:58,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 22. [2019-11-26 02:42:58,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-26 02:42:58,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-11-26 02:42:58,639 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 12 [2019-11-26 02:42:58,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:42:58,639 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-11-26 02:42:58,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:42:58,640 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-11-26 02:42:58,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-26 02:42:58,641 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:42:58,641 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:42:58,862 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-26 02:42:58,864 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:42:58,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:42:58,865 INFO L82 PathProgramCache]: Analyzing trace with hash -649381144, now seen corresponding path program 1 times [2019-11-26 02:42:58,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:42:58,869 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368946250] [2019-11-26 02:42:58,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/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 02:42:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:42:59,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:42:59,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:42:59,102 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 02:42:59,103 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:42:59,800 WARN L192 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2019-11-26 02:43:00,015 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 02:43:00,015 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368946250] [2019-11-26 02:43:00,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:43:00,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-26 02:43:00,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96634949] [2019-11-26 02:43:00,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:43:00,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:43:00,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:43:00,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:43:00,017 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2019-11-26 02:43:00,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:43:00,540 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2019-11-26 02:43:00,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:43:00,548 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-11-26 02:43:00,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:43:00,549 INFO L225 Difference]: With dead ends: 34 [2019-11-26 02:43:00,549 INFO L226 Difference]: Without dead ends: 22 [2019-11-26 02:43:00,550 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:43:00,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-26 02:43:00,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-26 02:43:00,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-26 02:43:00,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-11-26 02:43:00,565 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2019-11-26 02:43:00,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:43:00,565 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-11-26 02:43:00,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:43:00,566 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-11-26 02:43:00,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-26 02:43:00,566 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:43:00,566 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:43:00,782 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-26 02:43:00,783 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:43:00,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:43:00,784 INFO L82 PathProgramCache]: Analyzing trace with hash 461150674, now seen corresponding path program 1 times [2019-11-26 02:43:00,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:43:00,788 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693208254] [2019-11-26 02:43:00,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-26 02:43:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:43:00,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-26 02:43:00,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:43:01,006 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 56 [2019-11-26 02:43:01,022 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:43:01,037 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 58 [2019-11-26 02:43:01,038 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-26 02:43:01,068 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:43:01,084 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2019-11-26 02:43:01,085 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-26 02:43:01,106 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:43:01,112 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:43:01,113 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2019-11-26 02:43:01,114 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-26 02:43:01,125 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:43:01,125 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:43:01,141 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:43:01,142 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-26 02:43:01,142 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:72, output treesize:29 [2019-11-26 02:43:01,200 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 02:43:01,201 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:43:01,285 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:43:01,285 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 54 [2019-11-26 02:43:01,302 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2019-11-26 02:43:01,302 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-26 02:43:01,317 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:43:01,329 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:43:01,329 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2019-11-26 02:43:01,330 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-26 02:43:01,337 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:43:01,337 INFO L496 ElimStorePlain]: Start of recursive call 2: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:43:01,357 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:43:01,358 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-26 02:43:01,358 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:68, output treesize:26 [2019-11-26 02:43:01,861 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 02:43:01,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693208254] [2019-11-26 02:43:01,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:43:01,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 2] imperfect sequences [] total 5 [2019-11-26 02:43:01,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431655658] [2019-11-26 02:43:01,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:43:01,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:43:01,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:43:01,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:43:01,864 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 5 states. [2019-11-26 02:43:01,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:43:01,865 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-11-26 02:43:01,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:43:01,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-26 02:43:01,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:43:01,866 INFO L225 Difference]: With dead ends: 22 [2019-11-26 02:43:01,866 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:43:01,867 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:43:01,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:43:01,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:43:01,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:43:01,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:43:01,868 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-11-26 02:43:01,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:43:01,868 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:43:01,868 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:43:01,868 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:43:01,868 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:43:02,069 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-26 02:43:02,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:43:02,149 INFO L444 ceAbstractionStarter]: For program point L27(lines 27 46) no Hoare annotation was computed. [2019-11-26 02:43:02,149 INFO L444 ceAbstractionStarter]: For program point L19-1(lines 19 24) no Hoare annotation was computed. [2019-11-26 02:43:02,149 INFO L440 ceAbstractionStarter]: At program point L19-2(lines 19 24) the Hoare annotation is: false [2019-11-26 02:43:02,149 INFO L444 ceAbstractionStarter]: For program point L19-3(lines 19 24) no Hoare annotation was computed. [2019-11-26 02:43:02,150 INFO L444 ceAbstractionStarter]: For program point L102(line 102) no Hoare annotation was computed. [2019-11-26 02:43:02,150 INFO L444 ceAbstractionStarter]: For program point L102-2(lines 102 105) no Hoare annotation was computed. [2019-11-26 02:43:02,150 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:43:02,150 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-26 02:43:02,150 INFO L444 ceAbstractionStarter]: For program point L28(lines 28 35) no Hoare annotation was computed. [2019-11-26 02:43:02,150 INFO L444 ceAbstractionStarter]: For program point L103(line 103) no Hoare annotation was computed. [2019-11-26 02:43:02,150 INFO L444 ceAbstractionStarter]: For program point L70(lines 70 75) no Hoare annotation was computed. [2019-11-26 02:43:02,151 INFO L444 ceAbstractionStarter]: For program point L70-1(lines 16 77) no Hoare annotation was computed. [2019-11-26 02:43:02,151 INFO L444 ceAbstractionStarter]: For program point L70-2(lines 70 75) no Hoare annotation was computed. [2019-11-26 02:43:02,151 INFO L444 ceAbstractionStarter]: For program point L62(lines 62 63) no Hoare annotation was computed. [2019-11-26 02:43:02,151 INFO L444 ceAbstractionStarter]: For program point L29(lines 29 34) no Hoare annotation was computed. [2019-11-26 02:43:02,151 INFO L444 ceAbstractionStarter]: For program point L62-2(lines 62 63) no Hoare annotation was computed. [2019-11-26 02:43:02,151 INFO L444 ceAbstractionStarter]: For program point L54(lines 54 55) no Hoare annotation was computed. [2019-11-26 02:43:02,151 INFO L444 ceAbstractionStarter]: For program point L38(lines 38 39) no Hoare annotation was computed. [2019-11-26 02:43:02,151 INFO L440 ceAbstractionStarter]: At program point L88(lines 79 89) the Hoare annotation is: false [2019-11-26 02:43:02,152 INFO L444 ceAbstractionStarter]: For program point L47(lines 47 69) no Hoare annotation was computed. [2019-11-26 02:43:02,152 INFO L444 ceAbstractionStarter]: For program point L31(lines 31 34) no Hoare annotation was computed. [2019-11-26 02:43:02,152 INFO L444 ceAbstractionStarter]: For program point L56(lines 56 68) no Hoare annotation was computed. [2019-11-26 02:43:02,152 INFO L444 ceAbstractionStarter]: For program point L48(lines 48 51) no Hoare annotation was computed. [2019-11-26 02:43:02,152 INFO L444 ceAbstractionStarter]: For program point L40(lines 40 45) no Hoare annotation was computed. [2019-11-26 02:43:02,152 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-26 02:43:02,152 INFO L444 ceAbstractionStarter]: For program point L57(lines 57 66) no Hoare annotation was computed. [2019-11-26 02:43:02,152 INFO L444 ceAbstractionStarter]: For program point L57-1(lines 57 66) no Hoare annotation was computed. [2019-11-26 02:43:02,153 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 103) no Hoare annotation was computed. [2019-11-26 02:43:02,153 INFO L444 ceAbstractionStarter]: For program point L82-1(lines 82 86) no Hoare annotation was computed. [2019-11-26 02:43:02,153 INFO L440 ceAbstractionStarter]: At program point L82-2(lines 82 86) the Hoare annotation is: false [2019-11-26 02:43:02,153 INFO L444 ceAbstractionStarter]: For program point L82-3(lines 82 86) no Hoare annotation was computed. [2019-11-26 02:43:02,153 INFO L447 ceAbstractionStarter]: At program point L107(lines 91 108) the Hoare annotation is: true [2019-11-26 02:43:02,153 INFO L444 ceAbstractionStarter]: For program point L41(lines 41 42) no Hoare annotation was computed. [2019-11-26 02:43:02,153 INFO L444 ceAbstractionStarter]: For program point L41-2(lines 41 42) no Hoare annotation was computed. [2019-11-26 02:43:02,154 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:43:02,154 INFO L444 ceAbstractionStarter]: For program point L58(lines 58 65) no Hoare annotation was computed. [2019-11-26 02:43:02,154 INFO L444 ceAbstractionStarter]: For program point L26(lines 26 69) no Hoare annotation was computed. [2019-11-26 02:43:02,154 INFO L440 ceAbstractionStarter]: At program point L76(lines 16 77) the Hoare annotation is: false [2019-11-26 02:43:02,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:43:02 BoogieIcfgContainer [2019-11-26 02:43:02,160 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:43:02,160 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:43:02,160 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:43:02,161 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:43:02,161 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:42:57" (3/4) ... [2019-11-26 02:43:02,164 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:43:02,175 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-26 02:43:02,176 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:43:02,176 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:43:02,259 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a7c430e1-5144-4d4f-a7ea-052918509557/bin/utaipan/witness.graphml [2019-11-26 02:43:02,260 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:43:02,263 INFO L168 Benchmark]: Toolchain (without parser) took 6378.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 961.8 MB in the beginning and 948.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 145.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:02,264 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:43:02,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 961.8 MB in the beginning and 1.1 GB in the end (delta: -159.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:02,265 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.81 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 02:43:02,265 INFO L168 Benchmark]: Boogie Preprocessor took 31.67 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 02:43:02,266 INFO L168 Benchmark]: RCFGBuilder took 1174.05 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: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:02,266 INFO L168 Benchmark]: TraceAbstraction took 4690.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 948.8 MB in the end (delta: 143.6 MB). Peak memory consumption was 143.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:43:02,266 INFO L168 Benchmark]: Witness Printer took 101.73 ms. Allocated memory is still 1.2 GB. Free memory is still 948.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:43:02,268 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 337.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 961.8 MB in the beginning and 1.1 GB in the end (delta: -159.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.81 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. * Boogie Preprocessor took 31.67 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 1174.05 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: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4690.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 948.8 MB in the end (delta: 143.6 MB). Peak memory consumption was 143.6 MB. Max. memory is 11.5 GB. * Witness Printer took 101.73 ms. Allocated memory is still 1.2 GB. Free memory is still 948.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 103]: 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: 82]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 91]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 79]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Result: SAFE, OverallTime: 4.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 123 SDslu, 47 SDs, 0 SdLazy, 27 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 5 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 102 ConstructedInterpolants, 12 QuantifiedInterpolants, 8214 SizeOfPredicates, 15 NumberOfNonLiveVariables, 158 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...