./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float22.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float22.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/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 08947af3b6f9b8a272faa540a059213a9b1de888 ........................................................................................................................................................................................................................................................................................................ 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_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float22.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/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 08947af3b6f9b8a272faa540a059213a9b1de888 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 10:42:06,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:42:06,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:42:06,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:42:06,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:42:06,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:42:06,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:42:06,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:42:06,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:42:06,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:42:06,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:42:06,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:42:06,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:42:06,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:42:06,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:42:06,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:42:06,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:42:06,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:42:06,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:42:06,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:42:06,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:42:06,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:42:06,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:42:06,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:42:06,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:42:06,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:42:06,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:42:06,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:42:06,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:42:06,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:42:06,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:42:06,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:42:06,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:42:06,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:42:06,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:42:06,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:42:06,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:42:06,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:42:06,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:42:06,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:42:06,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:42:06,116 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 10:42:06,126 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:42:06,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:42:06,127 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 10:42:06,127 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 10:42:06,127 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 10:42:06,127 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 10:42:06,128 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 10:42:06,128 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 10:42:06,128 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 10:42:06,128 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 10:42:06,128 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 10:42:06,128 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 10:42:06,128 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 10:42:06,129 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 10:42:06,129 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 10:42:06,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:42:06,129 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 10:42:06,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 10:42:06,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 10:42:06,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:42:06,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 10:42:06,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 10:42:06,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 10:42:06,130 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 10:42:06,130 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 10:42:06,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:42:06,131 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:42:06,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 10:42:06,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:42:06,131 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 10:42:06,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 10:42:06,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:42:06,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:42:06,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 10:42:06,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 10:42:06,132 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 10:42:06,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 10:42:06,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 10:42:06,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:42:06,133 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 10:42:06,133 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_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/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 -> 08947af3b6f9b8a272faa540a059213a9b1de888 [2019-12-07 10:42:06,232 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:42:06,239 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:42:06,242 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:42:06,243 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:42:06,243 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:42:06,243 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float22.i [2019-12-07 10:42:06,280 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/bin/utaipan/data/053c6b238/fe8ecf9450034b93864d0f942162c1dc/FLAGdc64b5de9 [2019-12-07 10:42:06,762 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:42:06,762 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/sv-benchmarks/c/floats-cbmc-regression/float22.i [2019-12-07 10:42:06,768 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/bin/utaipan/data/053c6b238/fe8ecf9450034b93864d0f942162c1dc/FLAGdc64b5de9 [2019-12-07 10:42:06,777 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/bin/utaipan/data/053c6b238/fe8ecf9450034b93864d0f942162c1dc [2019-12-07 10:42:06,780 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:42:06,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:42:06,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:42:06,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:42:06,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:42:06,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:42:06" (1/1) ... [2019-12-07 10:42:06,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cf98bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:06, skipping insertion in model container [2019-12-07 10:42:06,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:42:06" (1/1) ... [2019-12-07 10:42:06,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:42:06,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:42:06,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:42:06,959 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:42:06,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:42:06,993 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:42:06,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:06 WrapperNode [2019-12-07 10:42:06,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:42:06,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:42:06,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:42:06,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:42:06,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:06" (1/1) ... [2019-12-07 10:42:07,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:06" (1/1) ... [2019-12-07 10:42:07,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:42:07,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:42:07,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:42:07,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:42:07,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:06" (1/1) ... [2019-12-07 10:42:07,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:06" (1/1) ... [2019-12-07 10:42:07,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:06" (1/1) ... [2019-12-07 10:42:07,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:06" (1/1) ... [2019-12-07 10:42:07,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:06" (1/1) ... [2019-12-07 10:42:07,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:06" (1/1) ... [2019-12-07 10:42:07,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:06" (1/1) ... [2019-12-07 10:42:07,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:42:07,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:42:07,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:42:07,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:42:07,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/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 [2019-12-07 10:42:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 10:42:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 10:42:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 10:42:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 10:42:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:42:07,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:42:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 10:42:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 10:42:07,774 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:42:07,775 INFO L287 CfgBuilder]: Removed 26 assume(true) statements. [2019-12-07 10:42:07,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:42:07 BoogieIcfgContainer [2019-12-07 10:42:07,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:42:07,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 10:42:07,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 10:42:07,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 10:42:07,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 10:42:06" (1/3) ... [2019-12-07 10:42:07,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727e9cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:42:07, skipping insertion in model container [2019-12-07 10:42:07,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:06" (2/3) ... [2019-12-07 10:42:07,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727e9cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:42:07, skipping insertion in model container [2019-12-07 10:42:07,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:42:07" (3/3) ... [2019-12-07 10:42:07,781 INFO L109 eAbstractionObserver]: Analyzing ICFG float22.i [2019-12-07 10:42:07,788 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 10:42:07,793 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-12-07 10:42:07,801 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 10:42:07,817 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 10:42:07,817 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 10:42:07,817 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 10:42:07,817 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:42:07,817 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:42:07,817 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 10:42:07,817 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:42:07,817 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 10:42:07,828 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-12-07 10:42:07,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 10:42:07,832 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:42:07,832 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 10:42:07,833 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:42:07,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:42:07,837 INFO L82 PathProgramCache]: Analyzing trace with hash 97350, now seen corresponding path program 1 times [2019-12-07 10:42:07,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 10:42:07,843 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096221391] [2019-12-07 10:42:07,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:42:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:42:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:42:08,005 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 10:42:08,005 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 10:42:08,012 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 10:42:08,013 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 10:42:08,013 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 10:42:08,013 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 10:42:08,013 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 10:42:08,014 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 10:42:08,014 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 10:42:08,014 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 10:42:08,014 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 10:42:08,018 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.negative [2019-12-07 10:42:08,020 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.exponent [2019-12-07 10:42:08,020 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.mantissa [2019-12-07 10:42:08,020 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.negative [2019-12-07 10:42:08,020 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.exponent [2019-12-07 10:42:08,020 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.mantissa [2019-12-07 10:42:08,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:42:08 BoogieIcfgContainer [2019-12-07 10:42:08,025 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 10:42:08,026 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:42:08,026 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:42:08,026 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:42:08,026 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:42:07" (3/4) ... [2019-12-07 10:42:08,028 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 10:42:08,029 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:42:08,030 INFO L168 Benchmark]: Toolchain (without parser) took 1249.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 944.2 MB in the beginning and 980.7 MB in the end (delta: -36.5 MB). Peak memory consumption was 64.7 MB. Max. memory is 11.5 GB. [2019-12-07 10:42:08,031 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:42:08,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 944.2 MB in the beginning and 1.1 GB in the end (delta: -151.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-12-07 10:42:08,032 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 10:42:08,032 INFO L168 Benchmark]: Boogie Preprocessor took 28.05 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:42:08,032 INFO L168 Benchmark]: RCFGBuilder took 720.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 996.8 MB in the end (delta: 93.9 MB). Peak memory consumption was 93.9 MB. Max. memory is 11.5 GB. [2019-12-07 10:42:08,033 INFO L168 Benchmark]: TraceAbstraction took 248.67 ms. Allocated memory is still 1.1 GB. Free memory was 996.8 MB in the beginning and 980.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-12-07 10:42:08,033 INFO L168 Benchmark]: Witness Printer took 3.06 ms. Allocated memory is still 1.1 GB. Free memory is still 980.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:42:08,035 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 212.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 944.2 MB in the beginning and 1.1 GB in the end (delta: -151.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.05 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 720.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 996.8 MB in the end (delta: 93.9 MB). Peak memory consumption was 93.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 248.67 ms. Allocated memory is still 1.1 GB. Free memory was 996.8 MB in the beginning and 980.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.06 ms. Allocated memory is still 1.1 GB. Free memory is still 980.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.negative - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.exponent - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.mantissa - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.negative - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.exponent - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.mantissa * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 133]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 119. Possible FailurePath: [L128] ieee754_float f1, f2; [L117] ieee754_float c; [L119] c.ieee.negative = index & 0x1 [L120] c.ieee.exponent = 0 [L121] c.ieee.mantissa = 0 [L123] return c; [L123] return c; [L130] f1 = returnsStructure(0) [L117] ieee754_float c; [L119] c.ieee.negative = index & 0x1 [L120] c.ieee.exponent = 0 [L121] c.ieee.mantissa = 0 [L123] return c; [L123] return c; [L131] f2 = returnsStructure(1) [L133] EXPR f1.ieee.negative [L133] EXPR f2.ieee.negative VAL [unknown-returnsStructure_#res.ieee.exponent-unknown=0, unknown-returnsStructure_#res.ieee.mantissa-unknown=0, unknown-returnsStructure_#res.ieee.negative-unknown=0] [L133] COND TRUE !(f1.ieee.negative != f2.ieee.negative) [L133] __VERIFIER_error() VAL [unknown-returnsStructure_#res.ieee.exponent-unknown=0, unknown-returnsStructure_#res.ieee.mantissa-unknown=0, unknown-returnsStructure_#res.ieee.negative-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 0.1.25-f470102 [2019-12-07 10:42:09,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:42:09,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:42:09,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:42:09,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:42:09,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:42:09,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:42:09,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:42:09,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:42:09,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:42:09,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:42:09,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:42:09,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:42:09,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:42:09,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:42:09,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:42:09,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:42:09,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:42:09,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:42:09,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:42:09,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:42:09,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:42:09,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:42:09,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:42:09,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:42:09,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:42:09,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:42:09,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:42:09,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:42:09,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:42:09,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:42:09,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:42:09,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:42:09,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:42:09,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:42:09,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:42:09,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:42:09,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:42:09,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:42:09,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:42:09,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:42:09,515 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 10:42:09,525 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:42:09,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:42:09,526 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 10:42:09,526 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 10:42:09,526 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 10:42:09,526 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 10:42:09,526 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 10:42:09,526 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 10:42:09,526 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 10:42:09,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:42:09,527 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 10:42:09,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 10:42:09,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:42:09,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 10:42:09,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 10:42:09,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 10:42:09,528 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 10:42:09,528 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 10:42:09,528 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 10:42:09,528 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 10:42:09,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:42:09,528 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:42:09,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 10:42:09,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:42:09,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 10:42:09,529 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 10:42:09,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 10:42:09,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:42:09,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:42:09,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 10:42:09,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 10:42:09,530 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 10:42:09,530 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 10:42:09,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 10:42:09,530 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:42:09,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 10:42:09,530 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_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/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 -> 08947af3b6f9b8a272faa540a059213a9b1de888 [2019-12-07 10:42:09,693 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:42:09,701 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:42:09,703 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:42:09,704 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:42:09,704 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:42:09,705 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float22.i [2019-12-07 10:42:09,742 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/bin/utaipan/data/0eaec3a75/baa2f31b4f0a4828a70c386cb32fcd10/FLAG449b5fa38 [2019-12-07 10:42:10,176 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:42:10,177 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/sv-benchmarks/c/floats-cbmc-regression/float22.i [2019-12-07 10:42:10,183 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/bin/utaipan/data/0eaec3a75/baa2f31b4f0a4828a70c386cb32fcd10/FLAG449b5fa38 [2019-12-07 10:42:10,191 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/bin/utaipan/data/0eaec3a75/baa2f31b4f0a4828a70c386cb32fcd10 [2019-12-07 10:42:10,193 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:42:10,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:42:10,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:42:10,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:42:10,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:42:10,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:42:10" (1/1) ... [2019-12-07 10:42:10,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30db0250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:10, skipping insertion in model container [2019-12-07 10:42:10,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:42:10" (1/1) ... [2019-12-07 10:42:10,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:42:10,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:42:10,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:42:10,332 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:42:10,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:42:10,373 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:42:10,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:10 WrapperNode [2019-12-07 10:42:10,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:42:10,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:42:10,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:42:10,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:42:10,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:10" (1/1) ... [2019-12-07 10:42:10,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:10" (1/1) ... [2019-12-07 10:42:10,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:42:10,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:42:10,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:42:10,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:42:10,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:10" (1/1) ... [2019-12-07 10:42:10,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:10" (1/1) ... [2019-12-07 10:42:10,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:10" (1/1) ... [2019-12-07 10:42:10,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:10" (1/1) ... [2019-12-07 10:42:10,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:10" (1/1) ... [2019-12-07 10:42:10,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:10" (1/1) ... [2019-12-07 10:42:10,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:10" (1/1) ... [2019-12-07 10:42:10,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:42:10,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:42:10,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:42:10,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:42:10,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/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 [2019-12-07 10:42:10,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 10:42:10,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-12-07 10:42:10,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 10:42:10,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:42:10,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:42:10,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-12-07 10:42:10,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 10:42:10,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 10:42:10,791 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:42:10,791 INFO L287 CfgBuilder]: Removed 26 assume(true) statements. [2019-12-07 10:42:10,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:42:10 BoogieIcfgContainer [2019-12-07 10:42:10,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:42:10,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 10:42:10,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 10:42:10,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 10:42:10,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 10:42:10" (1/3) ... [2019-12-07 10:42:10,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1733afbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:42:10, skipping insertion in model container [2019-12-07 10:42:10,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:42:10" (2/3) ... [2019-12-07 10:42:10,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1733afbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:42:10, skipping insertion in model container [2019-12-07 10:42:10,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:42:10" (3/3) ... [2019-12-07 10:42:10,797 INFO L109 eAbstractionObserver]: Analyzing ICFG float22.i [2019-12-07 10:42:10,803 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 10:42:10,808 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-12-07 10:42:10,815 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 10:42:10,830 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 10:42:10,830 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 10:42:10,830 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 10:42:10,830 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:42:10,830 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:42:10,830 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 10:42:10,830 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:42:10,830 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 10:42:10,839 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-12-07 10:42:10,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 10:42:10,842 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:42:10,843 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 10:42:10,843 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:42:10,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:42:10,847 INFO L82 PathProgramCache]: Analyzing trace with hash 889475942, now seen corresponding path program 1 times [2019-12-07 10:42:10,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 10:42:10,855 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705736778] [2019-12-07 10:42:10,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/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 [2019-12-07 10:42:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:42:10,961 INFO L264 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 20 conjunts are in the unsatisfiable core [2019-12-07 10:42:10,965 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:42:11,089 INFO L343 Elim1Store]: treesize reduction 16, result has 74.6 percent of original size [2019-12-07 10:42:11,090 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 70 [2019-12-07 10:42:11,091 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:11,220 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2019-12-07 10:42:11,221 INFO L614 ElimStorePlain]: treesize reduction 36, result has 61.7 percent of original size [2019-12-07 10:42:11,237 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2019-12-07 10:42:11,238 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:11,257 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:42:11,258 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 10:42:11,258 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:70, output treesize:62 [2019-12-07 10:42:11,356 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:42:11,357 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 25 treesize of output 57 [2019-12-07 10:42:11,358 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:11,482 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2019-12-07 10:42:11,482 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:42:11,653 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2019-12-07 10:42:11,654 INFO L343 Elim1Store]: treesize reduction 74, result has 54.3 percent of original size [2019-12-07 10:42:11,654 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 140 [2019-12-07 10:42:11,656 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:11,827 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2019-12-07 10:42:11,828 INFO L614 ElimStorePlain]: treesize reduction 44, result has 75.0 percent of original size [2019-12-07 10:42:11,829 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:11,835 INFO L534 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 10:42:11,835 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:164, output treesize:119 [2019-12-07 10:42:11,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:11,881 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:11,899 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 10:42:11,976 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:42:11,976 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 101 treesize of output 73 [2019-12-07 10:42:11,977 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:11,981 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 10:42:11,986 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 40 [2019-12-07 10:42:11,987 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:12,026 INFO L614 ElimStorePlain]: treesize reduction 50, result has 42.5 percent of original size [2019-12-07 10:42:12,026 INFO L534 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 10:42:12,027 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 9 variables, input treesize:264, output treesize:25 [2019-12-07 10:42:12,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:42:12,045 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 10:42:18,104 WARN L192 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 67 [2019-12-07 10:42:18,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:42:18,115 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705736778] [2019-12-07 10:42:18,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:42:18,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-12-07 10:42:18,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028591168] [2019-12-07 10:42:18,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 10:42:18,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 10:42:18,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 10:42:18,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=39, Unknown=1, NotChecked=0, Total=56 [2019-12-07 10:42:18,129 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 8 states. [2019-12-07 10:42:18,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:42:18,570 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2019-12-07 10:42:18,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 10:42:18,572 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 6 [2019-12-07 10:42:18,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:42:18,578 INFO L225 Difference]: With dead ends: 57 [2019-12-07 10:42:18,578 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 10:42:18,580 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=22, Invalid=49, Unknown=1, NotChecked=0, Total=72 [2019-12-07 10:42:18,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 10:42:18,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-07 10:42:18,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 10:42:18,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2019-12-07 10:42:18,604 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 6 [2019-12-07 10:42:18,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:42:18,604 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2019-12-07 10:42:18,604 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 10:42:18,604 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2019-12-07 10:42:18,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 10:42:18,605 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:42:18,605 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:42:18,806 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 10:42:18,807 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:42:18,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:42:18,808 INFO L82 PathProgramCache]: Analyzing trace with hash 2061469933, now seen corresponding path program 1 times [2019-12-07 10:42:18,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 10:42:18,811 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306219963] [2019-12-07 10:42:18,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/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 [2019-12-07 10:42:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:42:19,044 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 25 conjunts are in the unsatisfiable core [2019-12-07 10:42:19,047 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:42:19,053 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 42 [2019-12-07 10:42:19,054 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:19,056 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:42:19,056 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 10:42:19,058 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:42:19,058 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 10:42:19,058 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:48, output treesize:6 [2019-12-07 10:42:19,137 INFO L343 Elim1Store]: treesize reduction 16, result has 74.6 percent of original size [2019-12-07 10:42:19,137 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 70 [2019-12-07 10:42:19,138 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:19,247 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2019-12-07 10:42:19,248 INFO L614 ElimStorePlain]: treesize reduction 36, result has 61.7 percent of original size [2019-12-07 10:42:19,258 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2019-12-07 10:42:19,258 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:19,277 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:42:19,278 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 10:42:19,278 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:70, output treesize:62 [2019-12-07 10:42:19,376 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:42:19,376 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 25 treesize of output 57 [2019-12-07 10:42:19,377 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:19,509 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2019-12-07 10:42:19,509 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:42:19,688 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2019-12-07 10:42:19,689 INFO L343 Elim1Store]: treesize reduction 74, result has 54.3 percent of original size [2019-12-07 10:42:19,689 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 140 [2019-12-07 10:42:19,690 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:19,896 WARN L192 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2019-12-07 10:42:19,897 INFO L614 ElimStorePlain]: treesize reduction 44, result has 74.0 percent of original size [2019-12-07 10:42:19,898 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:19,900 INFO L534 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 10:42:19,900 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:157, output treesize:112 [2019-12-07 10:42:19,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:19,936 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:19,951 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 10:42:19,973 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 42 [2019-12-07 10:42:19,974 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:19,981 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 10:42:20,009 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:42:20,009 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 103 treesize of output 75 [2019-12-07 10:42:20,010 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:20,059 INFO L614 ElimStorePlain]: treesize reduction 50, result has 42.5 percent of original size [2019-12-07 10:42:20,060 INFO L534 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 10:42:20,060 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 10 variables, input treesize:260, output treesize:25 [2019-12-07 10:42:20,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:42:20,076 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 10:42:22,137 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_subst_9 (_ BitVec 32)) (v_subst_8 (_ BitVec 32)) (|v_ULTIMATE.start_returnsStructure_~#c~1.base_23| (_ BitVec 32)) (|ULTIMATE.start_testTwo_~#f2~1.offset| (_ BitVec 32)) (v_subst_10 (_ BitVec 32)) (|ULTIMATE.start_returnsStructure_#res.ieee.mantissa| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_21| (_ BitVec 32)) (|ULTIMATE.start_testTwo_~#f1~1.offset| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_20| (_ BitVec 32)) (|ULTIMATE.start_returnsStructure_#res.ieee.negative| (_ BitVec 32)) (|ULTIMATE.start_returnsStructure_#res.ieee.exponent| (_ BitVec 32))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_testTwo_~#f1~1.base| (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_testTwo_~#f1~1.base|) |ULTIMATE.start_testTwo_~#f1~1.offset| |ULTIMATE.start_returnsStructure_#res.ieee.negative|) (bvadd |ULTIMATE.start_testTwo_~#f1~1.offset| (_ bv4 32)) |ULTIMATE.start_returnsStructure_#res.ieee.exponent|) (bvadd |ULTIMATE.start_testTwo_~#f1~1.offset| (_ bv8 32)) |ULTIMATE.start_returnsStructure_#res.ieee.mantissa|) |ULTIMATE.start_testTwo_~#f1~1.offset| |v_skolemized_q#valueAsBitvector_20|)))) (let ((.cse2 (store (store (store (select .cse1 |v_ULTIMATE.start_returnsStructure_~#c~1.base_23|) (_ bv0 32) (_ bv1 32)) (_ bv4 32) (_ bv0 32)) (_ bv8 32) (_ bv0 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_returnsStructure_~#c~1.base_23|))) (not (= (select (select (let ((.cse0 (store .cse1 |v_ULTIMATE.start_returnsStructure_~#c~1.base_23| .cse2))) (store .cse0 |c_ULTIMATE.start_testTwo_~#f2~1.base| (store (store (store (store (select .cse0 |c_ULTIMATE.start_testTwo_~#f2~1.base|) |ULTIMATE.start_testTwo_~#f2~1.offset| v_subst_9) (bvadd |ULTIMATE.start_testTwo_~#f2~1.offset| (_ bv4 32)) v_subst_10) (bvadd |ULTIMATE.start_testTwo_~#f2~1.offset| (_ bv8 32)) v_subst_8) |ULTIMATE.start_testTwo_~#f2~1.offset| |v_skolemized_q#valueAsBitvector_21|))) |c_ULTIMATE.start_testTwo_~#f1~1.base|) |ULTIMATE.start_testTwo_~#f1~1.offset|) |v_skolemized_q#valueAsBitvector_21|)) (not (= (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_20|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_20|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_20|)) |c_ULTIMATE.start_returnsStructure_#res.f|)) (not (= (let ((.cse3 (select .cse2 (_ bv0 32)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))) (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_21|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_21|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_21|)))))))) is different from false [2019-12-07 10:42:22,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:42:22,153 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306219963] [2019-12-07 10:42:22,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:42:22,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 9 [2019-12-07 10:42:22,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286281579] [2019-12-07 10:42:22,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 10:42:22,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 10:42:22,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 10:42:22,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=41, Unknown=1, NotChecked=12, Total=72 [2019-12-07 10:42:22,156 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand 9 states. [2019-12-07 10:42:22,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:42:22,709 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2019-12-07 10:42:22,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 10:42:22,710 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2019-12-07 10:42:22,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:42:22,711 INFO L225 Difference]: With dead ends: 25 [2019-12-07 10:42:22,711 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 10:42:22,711 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=35, Invalid=78, Unknown=1, NotChecked=18, Total=132 [2019-12-07 10:42:22,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 10:42:22,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 10:42:22,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 10:42:22,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-12-07 10:42:22,716 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 11 [2019-12-07 10:42:22,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:42:22,716 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-12-07 10:42:22,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 10:42:22,716 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-12-07 10:42:22,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 10:42:22,717 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:42:22,717 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:42:22,918 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 10:42:22,918 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:42:22,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:42:22,918 INFO L82 PathProgramCache]: Analyzing trace with hash -2079313263, now seen corresponding path program 1 times [2019-12-07 10:42:22,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 10:42:22,919 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210595724] [2019-12-07 10:42:22,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/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 [2019-12-07 10:42:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:42:23,249 INFO L264 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 29 conjunts are in the unsatisfiable core [2019-12-07 10:42:23,253 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:42:23,257 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 42 [2019-12-07 10:42:23,259 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:23,261 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:42:23,261 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 10:42:23,262 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:42:23,263 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 10:42:23,263 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:48, output treesize:6 [2019-12-07 10:42:23,324 INFO L343 Elim1Store]: treesize reduction 16, result has 74.6 percent of original size [2019-12-07 10:42:23,325 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 70 [2019-12-07 10:42:23,325 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:23,358 INFO L614 ElimStorePlain]: treesize reduction 36, result has 35.7 percent of original size [2019-12-07 10:42:23,359 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 10:42:23,359 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:20 [2019-12-07 10:42:23,478 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2019-12-07 10:42:23,479 INFO L343 Elim1Store]: treesize reduction 16, result has 83.7 percent of original size [2019-12-07 10:42:23,479 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 103 [2019-12-07 10:42:23,480 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:23,527 INFO L614 ElimStorePlain]: treesize reduction 50, result has 33.3 percent of original size [2019-12-07 10:42:23,528 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 10:42:23,528 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:25 [2019-12-07 10:42:23,648 INFO L343 Elim1Store]: treesize reduction 16, result has 83.7 percent of original size [2019-12-07 10:42:23,648 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 103 [2019-12-07 10:42:23,649 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:23,787 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2019-12-07 10:42:23,788 INFO L614 ElimStorePlain]: treesize reduction 50, result has 55.8 percent of original size [2019-12-07 10:42:23,799 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2019-12-07 10:42:23,800 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:23,820 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:42:23,821 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 10:42:23,821 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:73, output treesize:67 [2019-12-07 10:42:23,920 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:42:23,920 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 25 treesize of output 57 [2019-12-07 10:42:23,920 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:24,046 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2019-12-07 10:42:24,046 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:42:24,109 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:42:24,109 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 122 [2019-12-07 10:42:24,110 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:24,222 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2019-12-07 10:42:24,222 INFO L614 ElimStorePlain]: treesize reduction 44, result has 70.9 percent of original size [2019-12-07 10:42:24,223 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:24,224 INFO L534 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 10:42:24,224 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:131, output treesize:112 [2019-12-07 10:42:24,224 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:24,257 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:24,267 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 10:42:24,286 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 42 [2019-12-07 10:42:24,287 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:24,291 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 10:42:24,316 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:42:24,316 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 101 treesize of output 73 [2019-12-07 10:42:24,317 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:24,356 INFO L614 ElimStorePlain]: treesize reduction 50, result has 42.5 percent of original size [2019-12-07 10:42:24,356 INFO L534 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 10:42:24,357 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:232, output treesize:25 [2019-12-07 10:42:24,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:42:24,376 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 10:42:29,826 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:42:29,826 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 761 treesize of output 686 [2019-12-07 10:42:29,848 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:42:29,848 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 38 [2019-12-07 10:42:29,848 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 10:42:30,012 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 63 [2019-12-07 10:42:30,013 INFO L614 ElimStorePlain]: treesize reduction 523, result has 20.6 percent of original size [2019-12-07 10:42:30,109 INFO L343 Elim1Store]: treesize reduction 45, result has 58.3 percent of original size [2019-12-07 10:42:30,110 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 104 treesize of output 130 [2019-12-07 10:42:30,110 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,111 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,111 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,112 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,112 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,113 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,113 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,146 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:42:30,147 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 128 [2019-12-07 10:42:30,147 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,148 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,148 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,148 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,149 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,149 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,150 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,151 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,151 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,154 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,156 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,156 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,157 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,160 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,160 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,161 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,163 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,164 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,164 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,164 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,165 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,165 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,166 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,166 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,167 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,167 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,168 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,168 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,169 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,169 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,169 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,170 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,172 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,172 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,173 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,173 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,176 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,176 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,177 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,177 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,178 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,179 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,181 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,181 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,182 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,182 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,183 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,183 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,183 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,184 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,185 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,185 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,185 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:42:30,189 INFO L430 ElimStorePlain]: Different costs {0=[v_arrayElimCell_76, v_arrayElimCell_77], 3=[v_arrayElimCell_75]} [2019-12-07 10:42:30,195 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210595724] [2019-12-07 10:42:30,195 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@7475cebe [2019-12-07 10:42:30,195 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2085096327] [2019-12-07 10:42:30,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 10:42:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:42:30,846 INFO L264 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 29 conjunts are in the unsatisfiable core [2019-12-07 10:42:30,847 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@7475cebe [2019-12-07 10:42:30,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834963942] [2019-12-07 10:42:30,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c76b5ea6-1f8f-49f2-9fe9-4131a1f0723f/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:42:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:42:30,926 INFO L264 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 41 conjunts are in the unsatisfiable core [2019-12-07 10:42:30,926 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@7475cebe [2019-12-07 10:42:30,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:42:30,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2019-12-07 10:42:30,927 ERROR L206 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2019-12-07 10:42:30,927 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 10:42:31,531 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:42:31,575 WARN L229 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-12-07 10:42:31,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:42:31 BoogieIcfgContainer [2019-12-07 10:42:31,575 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 10:42:31,576 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:42:31,576 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:42:31,576 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:42:31,577 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:42:10" (3/4) ... [2019-12-07 10:42:31,580 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 10:42:31,580 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:42:31,581 INFO L168 Benchmark]: Toolchain (without parser) took 21387.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 191.9 MB). Free memory was 953.7 MB in the beginning and 871.3 MB in the end (delta: 82.4 MB). Peak memory consumption was 274.3 MB. Max. memory is 11.5 GB. [2019-12-07 10:42:31,582 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:42:31,582 INFO L168 Benchmark]: CACSL2BoogieTranslator took 178.62 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 937.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-12-07 10:42:31,583 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 937.6 MB in the beginning and 1.1 GB in the end (delta: -171.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 11.5 GB. [2019-12-07 10:42:31,583 INFO L168 Benchmark]: Boogie Preprocessor took 31.00 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:42:31,583 INFO L168 Benchmark]: RCFGBuilder took 320.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.7 MB). Peak memory consumption was 33.7 MB. Max. memory is 11.5 GB. [2019-12-07 10:42:31,584 INFO L168 Benchmark]: TraceAbstraction took 20782.65 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 71.3 MB). Free memory was 1.1 GB in the beginning and 871.3 MB in the end (delta: 204.4 MB). Peak memory consumption was 275.7 MB. Max. memory is 11.5 GB. [2019-12-07 10:42:31,584 INFO L168 Benchmark]: Witness Printer took 4.52 ms. Allocated memory is still 1.2 GB. Free memory is still 871.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:42:31,586 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 178.62 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 937.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 66.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 937.6 MB in the beginning and 1.1 GB in the end (delta: -171.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.00 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 320.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.7 MB). Peak memory consumption was 33.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 20782.65 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 71.3 MB). Free memory was 1.1 GB in the beginning and 871.3 MB in the end (delta: 204.4 MB). Peak memory consumption was 275.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.52 ms. Allocated memory is still 1.2 GB. Free memory is still 871.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 150]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L128] ieee754_float f1, f2; [L117] ieee754_float c; [L119] c.ieee.negative = index & 0x1 [L120] c.ieee.exponent = 0 [L121] c.ieee.mantissa = 0 [L123] return c; [L123] return c; [L130] f1 = returnsStructure(0) [L117] ieee754_float c; [L119] c.ieee.negative = index & 0x1 [L120] c.ieee.exponent = 0 [L121] c.ieee.mantissa = 0 [L123] return c; [L123] return c; [L131] f2 = returnsStructure(1) [L133] EXPR f1.ieee.negative [L133] EXPR f2.ieee.negative [L133] COND FALSE !(!(f1.ieee.negative != f2.ieee.negative)) [L135] return; [L135] return; [L140] ieee754_float f1, f2; [L117] ieee754_float c; [L119] c.ieee.negative = index & 0x1 [L120] c.ieee.exponent = 0 [L121] c.ieee.mantissa = 0 [L123] return c; [L123] return c; [L142] f1 = returnsStructure(0) [L117] ieee754_float c; [L119] c.ieee.negative = index & 0x1 [L120] c.ieee.exponent = 0 [L121] c.ieee.mantissa = 0 [L123] return c; [L123] return c; [L143] f2 = returnsStructure(1) [L145] EXPR f1.ieee.negative [L145] EXPR f2.ieee.negative [L145] COND FALSE !(!(f1.ieee.negative != f2.ieee.negative)) [L107] ieee754_float c; [L109] c.ieee.negative = index & 0x1 [L110] c.ieee.exponent = 0 [L111] c.ieee.mantissa = 0 [L113] EXPR c.f [L113] return c.f; [L113] return c.f; [L147] f1.f = returnsField(0) [L107] ieee754_float c; [L109] c.ieee.negative = index & 0x1 [L110] c.ieee.exponent = 0 [L111] c.ieee.mantissa = 0 [L113] EXPR c.f [L113] return c.f; [L113] return c.f; [L148] f2.f = returnsField(1) [L150] EXPR f1.ieee.negative [L150] EXPR f2.ieee.negative [L150] COND TRUE !(f1.ieee.negative != f2.ieee.negative) [L150] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 4 error locations. Result: UNKNOWN, OverallTime: 20.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 13 SDslu, 112 SDs, 0 SdLazy, 87 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 10.2s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 8 QuantifiedInterpolants, 8370 SizeOfPredicates, 50 NumberOfNonLiveVariables, 134 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...