./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call.c.v+nlh-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/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 f872833c8db251d06ddfd6f994cfddb26c5da434 .................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call.c.v+nlh-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/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 f872833c8db251d06ddfd6f994cfddb26c5da434 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 09:30:55,071 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 09:30:55,072 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 09:30:55,080 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 09:30:55,080 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 09:30:55,081 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 09:30:55,081 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 09:30:55,083 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 09:30:55,084 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 09:30:55,084 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 09:30:55,085 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 09:30:55,085 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 09:30:55,086 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 09:30:55,086 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 09:30:55,087 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 09:30:55,087 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 09:30:55,087 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 09:30:55,089 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 09:30:55,090 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 09:30:55,091 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 09:30:55,091 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 09:30:55,092 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 09:30:55,093 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 09:30:55,093 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 09:30:55,093 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 09:30:55,094 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 09:30:55,094 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 09:30:55,095 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 09:30:55,095 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 09:30:55,096 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 09:30:55,096 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 09:30:55,097 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 09:30:55,097 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 09:30:55,097 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 09:30:55,098 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 09:30:55,098 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 09:30:55,098 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 09:30:55,106 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 09:30:55,106 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 09:30:55,107 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 09:30:55,107 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 09:30:55,107 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 09:30:55,107 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 09:30:55,107 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 09:30:55,108 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 09:30:55,108 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 09:30:55,108 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 09:30:55,108 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 09:30:55,108 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 09:30:55,109 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 09:30:55,109 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 09:30:55,109 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 09:30:55,109 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 09:30:55,109 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 09:30:55,109 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 09:30:55,109 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 09:30:55,109 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 09:30:55,110 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 09:30:55,110 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 09:30:55,110 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 09:30:55,110 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 09:30:55,110 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 09:30:55,110 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 09:30:55,110 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 09:30:55,111 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 09:30:55,111 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 09:30:55,111 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 09:30:55,111 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 09:30:55,111 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 09:30:55,111 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 09:30:55,111 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 09:30:55,111 INFO L133 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/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/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 -> f872833c8db251d06ddfd6f994cfddb26c5da434 [2018-11-10 09:30:55,135 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 09:30:55,145 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 09:30:55,147 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 09:30:55,149 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 09:30:55,149 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 09:30:55,149 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call.c.v+nlh-reducer.c [2018-11-10 09:30:55,195 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/data/c21bcc01a/eb8834b05230407f9da4a2c584c68db3/FLAG29e14a0fc [2018-11-10 09:30:55,595 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 09:30:55,595 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call.c.v+nlh-reducer.c [2018-11-10 09:30:55,601 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/data/c21bcc01a/eb8834b05230407f9da4a2c584c68db3/FLAG29e14a0fc [2018-11-10 09:30:55,610 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/data/c21bcc01a/eb8834b05230407f9da4a2c584c68db3 [2018-11-10 09:30:55,612 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 09:30:55,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 09:30:55,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 09:30:55,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 09:30:55,617 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 09:30:55,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 09:30:55" (1/1) ... [2018-11-10 09:30:55,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4541c043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:55, skipping insertion in model container [2018-11-10 09:30:55,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 09:30:55" (1/1) ... [2018-11-10 09:30:55,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 09:30:55,643 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 09:30:55,756 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 09:30:55,759 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 09:30:55,779 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 09:30:55,789 INFO L193 MainTranslator]: Completed translation [2018-11-10 09:30:55,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:55 WrapperNode [2018-11-10 09:30:55,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 09:30:55,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 09:30:55,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 09:30:55,790 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 09:30:55,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:55" (1/1) ... [2018-11-10 09:30:55,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:55" (1/1) ... [2018-11-10 09:30:55,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 09:30:55,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 09:30:55,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 09:30:55,804 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 09:30:55,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:55" (1/1) ... [2018-11-10 09:30:55,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:55" (1/1) ... [2018-11-10 09:30:55,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:55" (1/1) ... [2018-11-10 09:30:55,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:55" (1/1) ... [2018-11-10 09:30:55,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:55" (1/1) ... [2018-11-10 09:30:55,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:55" (1/1) ... [2018-11-10 09:30:55,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:55" (1/1) ... [2018-11-10 09:30:55,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 09:30:55,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 09:30:55,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 09:30:55,821 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 09:30:55,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/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 [2018-11-10 09:30:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 09:30:55,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 09:30:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 09:30:55,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 09:30:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 09:30:55,904 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 09:30:56,109 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 09:30:56,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:30:56 BoogieIcfgContainer [2018-11-10 09:30:56,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 09:30:56,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 09:30:56,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 09:30:56,113 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 09:30:56,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 09:30:55" (1/3) ... [2018-11-10 09:30:56,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d500a37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 09:30:56, skipping insertion in model container [2018-11-10 09:30:56,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:55" (2/3) ... [2018-11-10 09:30:56,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d500a37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 09:30:56, skipping insertion in model container [2018-11-10 09:30:56,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:30:56" (3/3) ... [2018-11-10 09:30:56,116 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant_true-unreach-call.c.v+nlh-reducer.c [2018-11-10 09:30:56,124 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 09:30:56,131 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-10 09:30:56,145 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-10 09:30:56,172 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 09:30:56,172 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 09:30:56,172 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 09:30:56,172 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 09:30:56,172 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 09:30:56,173 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 09:30:56,173 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 09:30:56,173 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 09:30:56,188 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-11-10 09:30:56,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-10 09:30:56,193 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:30:56,194 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:30:56,196 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:30:56,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:30:56,201 INFO L82 PathProgramCache]: Analyzing trace with hash 767705956, now seen corresponding path program 1 times [2018-11-10 09:30:56,203 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 09:30:56,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:30:56,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:30:56,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:30:56,244 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 09:30:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:30:56,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:30:56,356 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:30:56,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 09:30:56,357 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 09:30:56,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 09:30:56,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 09:30:56,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 09:30:56,371 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 4 states. [2018-11-10 09:30:56,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:30:56,420 INFO L93 Difference]: Finished difference Result 82 states and 117 transitions. [2018-11-10 09:30:56,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 09:30:56,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-11-10 09:30:56,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 09:30:56,428 INFO L225 Difference]: With dead ends: 82 [2018-11-10 09:30:56,428 INFO L226 Difference]: Without dead ends: 66 [2018-11-10 09:30:56,430 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-10 09:30:56,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-11-10 09:30:56,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 45. [2018-11-10 09:30:56,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-10 09:30:56,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2018-11-10 09:30:56,454 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 20 [2018-11-10 09:30:56,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 09:30:56,455 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2018-11-10 09:30:56,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 09:30:56,455 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2018-11-10 09:30:56,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-10 09:30:56,455 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:30:56,455 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:30:56,456 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:30:56,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:30:56,456 INFO L82 PathProgramCache]: Analyzing trace with hash 856215017, now seen corresponding path program 1 times [2018-11-10 09:30:56,456 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 09:30:56,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:30:56,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:30:56,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:30:56,457 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 09:30:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:30:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:30:56,505 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 09:30:56,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 09:30:56 BoogieIcfgContainer [2018-11-10 09:30:56,531 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 09:30:56,531 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 09:30:56,531 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 09:30:56,531 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 09:30:56,531 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:30:56" (3/4) ... [2018-11-10 09:30:56,534 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 09:30:56,534 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 09:30:56,534 INFO L168 Benchmark]: Toolchain (without parser) took 921.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.1 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -150.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2018-11-10 09:30:56,535 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 09:30:56,535 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.19 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 945.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-10 09:30:56,536 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.60 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 09:30:56,536 INFO L168 Benchmark]: Boogie Preprocessor took 17.53 ms. Allocated memory is still 1.0 GB. Free memory was 945.8 MB in the beginning and 943.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 09:30:56,536 INFO L168 Benchmark]: RCFGBuilder took 288.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.1 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -205.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-11-10 09:30:56,537 INFO L168 Benchmark]: TraceAbstraction took 420.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.2 MB). Peak memory consumption was 37.2 MB. Max. memory is 11.5 GB. [2018-11-10 09:30:56,537 INFO L168 Benchmark]: Witness Printer took 2.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 09:30:56,539 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 175.19 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 945.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.60 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.53 ms. Allocated memory is still 1.0 GB. Free memory was 945.8 MB in the beginning and 943.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 288.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.1 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -205.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 420.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.2 MB). Peak memory consumption was 37.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 65]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 52, overapproximation of to_real at line 22, overapproximation of someBinaryArithmeticFLOAToperation at line 49. Possible FailurePath: [L1] int __return_main; [L7] int __tmp_160_0; [L8] int __tmp_160_1; [L9] int __tmp_160_2; [L10] int __tmp_142_0; [L11] int __tmp_142_1; [L12] int __tmp_136_0; [L13] int __return_165; VAL [\old(__return_165)=8, \old(__return_main)=5, \old(__tmp_136_0)=4, \old(__tmp_142_0)=1, \old(__tmp_142_1)=3, \old(__tmp_160_0)=11, \old(__tmp_160_1)=9, \old(__tmp_160_2)=10, __return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0] [L16] float main__X; [L17] float main__Y; [L18] float main__S; [L19] float main__R; [L20] float main__D; [L21] int main__i; [L22] main__Y = 0 [L23] main__i = 0 VAL [\old(__return_165)=0, \old(__tmp_136_0)=0, \old(__tmp_142_0)=0, \old(__tmp_142_1)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__i=0] [L24] COND TRUE main__i < 100000 [L26] main__X = __VERIFIER_nondet_float() [L27] main__D = __VERIFIER_nondet_float() [L28] int main____CPAchecker_TMP_0; VAL [\old(__return_165)=0, \old(__tmp_136_0)=0, \old(__tmp_142_0)=0, \old(__tmp_142_1)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__D=2, main__i=0, main__X=6] [L29] COND TRUE main__X >= -128.0 VAL [\old(__return_165)=0, \old(__tmp_136_0)=0, \old(__tmp_142_0)=0, \old(__tmp_142_1)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__D=2, main__i=0, main__X=6] [L31] COND TRUE main__X <= 128.0 [L33] main____CPAchecker_TMP_0 = 1 VAL [\old(__return_165)=0, \old(__tmp_136_0)=0, \old(__tmp_142_0)=0, \old(__tmp_142_1)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main__D=2, main__i=0, main__X=6] [L34] COND TRUE main____CPAchecker_TMP_0 != 0 [L36] int main____CPAchecker_TMP_1; VAL [\old(__return_165)=0, \old(__tmp_136_0)=0, \old(__tmp_142_0)=0, \old(__tmp_142_1)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main__D=2, main__i=0, main__X=6] [L37] COND TRUE main__D >= 0.0 VAL [\old(__return_165)=0, \old(__tmp_136_0)=0, \old(__tmp_142_0)=0, \old(__tmp_142_1)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main__D=2, main__i=0, main__X=6] [L39] COND TRUE main__D <= 16.0 [L41] main____CPAchecker_TMP_1 = 1 VAL [\old(__return_165)=0, \old(__tmp_136_0)=0, \old(__tmp_142_0)=0, \old(__tmp_142_1)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=2, main__i=0, main__X=6] [L42] COND TRUE main____CPAchecker_TMP_1 != 0 [L44] main__S = main__Y [L45] main__Y = main__X [L46] main__R = main__X - main__S VAL [\old(__return_165)=0, \old(__tmp_136_0)=0, \old(__tmp_142_0)=0, \old(__tmp_142_1)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=2, main__i=0, main__S=7, main__X=6, main__Y=6] [L47] COND TRUE main__R <= (-main__D) [L49] main__Y = main__S - main__D VAL [\old(__return_165)=0, \old(__tmp_136_0)=0, \old(__tmp_142_0)=0, \old(__tmp_142_1)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=2, main__i=0, main__S=7, main__X=6] [L51] int main____CPAchecker_TMP_2; VAL [\old(__return_165)=0, \old(__tmp_136_0)=0, \old(__tmp_142_0)=0, \old(__tmp_142_1)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=2, main__i=0, main__S=7, main__X=6] [L52] COND FALSE !(main__Y >= -129.0) VAL [\old(__return_165)=0, \old(__tmp_136_0)=0, \old(__tmp_142_0)=0, \old(__tmp_142_1)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=2, main__i=0, main__S=7, main__X=6] [L211] main____CPAchecker_TMP_2 = 0 VAL [\old(__return_165)=0, \old(__tmp_136_0)=0, \old(__tmp_142_0)=0, \old(__tmp_142_1)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=2, main__i=0, main__S=7, main__X=6] [L59] int __tmp_1; [L60] __tmp_1 = main____CPAchecker_TMP_2 [L61] int __VERIFIER_assert__cond; [L62] __VERIFIER_assert__cond = __tmp_1 VAL [\old(__return_165)=0, \old(__tmp_136_0)=0, \old(__tmp_142_0)=0, \old(__tmp_142_1)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_1=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=2, main__i=0, main__S=7, main__X=6] [L63] COND TRUE __VERIFIER_assert__cond == 0 VAL [\old(__return_165)=0, \old(__tmp_136_0)=0, \old(__tmp_142_0)=0, \old(__tmp_142_1)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_1=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=2, main__i=0, main__S=7, main__X=6] [L65] __VERIFIER_error() VAL [\old(__return_165)=0, \old(__tmp_136_0)=0, \old(__tmp_142_0)=0, \old(__tmp_142_1)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_1=0, __tmp_136_0=0, __tmp_142_0=0, __tmp_142_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=2, main__i=0, main__S=7, main__X=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 49 locations, 2 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 72 SDtfs, 38 SDslu, 136 SDs, 0 SdLazy, 10 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 21 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 437 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: 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 0.1.23-1dbac8b [2018-11-10 09:30:58,028 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 09:30:58,030 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 09:30:58,039 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 09:30:58,039 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 09:30:58,040 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 09:30:58,040 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 09:30:58,042 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 09:30:58,043 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 09:30:58,043 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 09:30:58,044 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 09:30:58,044 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 09:30:58,045 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 09:30:58,046 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 09:30:58,046 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 09:30:58,047 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 09:30:58,047 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 09:30:58,049 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 09:30:58,051 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 09:30:58,052 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 09:30:58,053 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 09:30:58,053 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 09:30:58,055 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 09:30:58,055 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 09:30:58,055 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 09:30:58,056 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 09:30:58,057 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 09:30:58,057 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 09:30:58,058 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 09:30:58,059 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 09:30:58,059 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 09:30:58,059 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 09:30:58,059 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 09:30:58,059 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 09:30:58,060 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 09:30:58,061 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 09:30:58,062 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-10 09:30:58,072 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 09:30:58,072 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 09:30:58,073 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 09:30:58,073 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 09:30:58,073 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 09:30:58,073 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 09:30:58,074 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 09:30:58,074 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 09:30:58,074 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 09:30:58,074 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 09:30:58,074 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 09:30:58,075 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 09:30:58,075 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 09:30:58,075 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 09:30:58,075 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 09:30:58,075 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 09:30:58,075 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 09:30:58,075 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 09:30:58,075 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 09:30:58,076 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 09:30:58,076 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 09:30:58,076 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 09:30:58,076 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 09:30:58,076 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 09:30:58,076 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 09:30:58,079 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 09:30:58,079 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 09:30:58,079 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 09:30:58,079 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-10 09:30:58,079 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 09:30:58,079 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 09:30:58,079 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 09:30:58,079 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/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 -> f872833c8db251d06ddfd6f994cfddb26c5da434 [2018-11-10 09:30:58,112 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 09:30:58,122 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 09:30:58,125 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 09:30:58,126 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 09:30:58,126 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 09:30:58,127 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call.c.v+nlh-reducer.c [2018-11-10 09:30:58,171 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/data/f0d9ebf2d/50f374d4f3b94a6584af97c7989d50a3/FLAG6f848f34b [2018-11-10 09:30:58,563 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 09:30:58,564 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call.c.v+nlh-reducer.c [2018-11-10 09:30:58,568 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/data/f0d9ebf2d/50f374d4f3b94a6584af97c7989d50a3/FLAG6f848f34b [2018-11-10 09:30:58,576 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/data/f0d9ebf2d/50f374d4f3b94a6584af97c7989d50a3 [2018-11-10 09:30:58,578 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 09:30:58,579 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 09:30:58,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 09:30:58,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 09:30:58,583 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 09:30:58,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 09:30:58" (1/1) ... [2018-11-10 09:30:58,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68355b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:58, skipping insertion in model container [2018-11-10 09:30:58,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 09:30:58" (1/1) ... [2018-11-10 09:30:58,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 09:30:58,616 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 09:30:58,740 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 09:30:58,745 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 09:30:58,769 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 09:30:58,781 INFO L193 MainTranslator]: Completed translation [2018-11-10 09:30:58,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:58 WrapperNode [2018-11-10 09:30:58,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 09:30:58,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 09:30:58,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 09:30:58,783 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 09:30:58,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:58" (1/1) ... [2018-11-10 09:30:58,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:58" (1/1) ... [2018-11-10 09:30:58,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 09:30:58,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 09:30:58,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 09:30:58,800 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 09:30:58,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:58" (1/1) ... [2018-11-10 09:30:58,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:58" (1/1) ... [2018-11-10 09:30:58,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:58" (1/1) ... [2018-11-10 09:30:58,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:58" (1/1) ... [2018-11-10 09:30:58,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:58" (1/1) ... [2018-11-10 09:30:58,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:58" (1/1) ... [2018-11-10 09:30:58,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:58" (1/1) ... [2018-11-10 09:30:58,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 09:30:58,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 09:30:58,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 09:30:58,818 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 09:30:58,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/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 [2018-11-10 09:30:58,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 09:30:58,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 09:30:58,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 09:30:58,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 09:30:58,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 09:30:58,899 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 09:31:00,915 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 09:31:00,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:31:00 BoogieIcfgContainer [2018-11-10 09:31:00,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 09:31:00,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 09:31:00,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 09:31:00,918 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 09:31:00,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 09:30:58" (1/3) ... [2018-11-10 09:31:00,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201f26da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 09:31:00, skipping insertion in model container [2018-11-10 09:31:00,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:30:58" (2/3) ... [2018-11-10 09:31:00,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201f26da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 09:31:00, skipping insertion in model container [2018-11-10 09:31:00,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:31:00" (3/3) ... [2018-11-10 09:31:00,920 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant_true-unreach-call.c.v+nlh-reducer.c [2018-11-10 09:31:00,926 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 09:31:00,931 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-10 09:31:00,940 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-10 09:31:00,959 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 09:31:00,959 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 09:31:00,959 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 09:31:00,959 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 09:31:00,960 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 09:31:00,960 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 09:31:00,960 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 09:31:00,960 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 09:31:00,960 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 09:31:00,971 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-11-10 09:31:00,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-10 09:31:00,975 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:31:00,976 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:31:00,977 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:31:00,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:31:00,981 INFO L82 PathProgramCache]: Analyzing trace with hash 767705956, now seen corresponding path program 1 times [2018-11-10 09:31:00,983 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 09:31:00,984 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/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 [2018-11-10 09:31:00,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:31:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:31:01,085 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:31:01,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:31:01,136 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [MP mathsat -unsat_core_generation=3 (2)] Exception during sending of exit command (exit): Broken pipe [2018-11-10 09:31:01,150 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:31:01,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 09:31:01,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 09:31:01,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 09:31:01,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 09:31:01,164 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 4 states. [2018-11-10 09:31:01,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:31:01,232 INFO L93 Difference]: Finished difference Result 82 states and 117 transitions. [2018-11-10 09:31:01,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 09:31:01,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-11-10 09:31:01,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 09:31:01,243 INFO L225 Difference]: With dead ends: 82 [2018-11-10 09:31:01,243 INFO L226 Difference]: Without dead ends: 66 [2018-11-10 09:31:01,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-10 09:31:01,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-11-10 09:31:01,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 45. [2018-11-10 09:31:01,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-10 09:31:01,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2018-11-10 09:31:01,278 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 20 [2018-11-10 09:31:01,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 09:31:01,278 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2018-11-10 09:31:01,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 09:31:01,279 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2018-11-10 09:31:01,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-10 09:31:01,279 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:31:01,279 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:31:01,280 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:31:01,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:31:01,280 INFO L82 PathProgramCache]: Analyzing trace with hash 856215017, now seen corresponding path program 1 times [2018-11-10 09:31:01,280 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 09:31:01,280 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/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 [2018-11-10 09:31:01,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:31:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:31:01,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:31:01,886 WARN L179 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-10 09:31:02,364 WARN L179 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-10 09:31:02,919 WARN L179 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-10 09:31:03,680 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-10 09:31:04,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:31:04,268 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 09:31:04,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:31:04,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-10 09:31:04,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 09:31:04,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 09:31:04,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-10 09:31:04,279 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand 7 states. [2018-11-10 09:31:07,059 WARN L179 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 21 [2018-11-10 09:31:14,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:31:14,230 INFO L93 Difference]: Finished difference Result 87 states and 113 transitions. [2018-11-10 09:31:14,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 09:31:14,235 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-11-10 09:31:14,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 09:31:14,236 INFO L225 Difference]: With dead ends: 87 [2018-11-10 09:31:14,236 INFO L226 Difference]: Without dead ends: 62 [2018-11-10 09:31:14,237 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-10 09:31:14,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-11-10 09:31:14,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2018-11-10 09:31:14,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-10 09:31:14,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2018-11-10 09:31:14,245 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 20 [2018-11-10 09:31:14,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 09:31:14,245 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2018-11-10 09:31:14,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 09:31:14,245 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2018-11-10 09:31:14,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 09:31:14,246 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:31:14,246 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:31:14,246 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:31:14,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:31:14,247 INFO L82 PathProgramCache]: Analyzing trace with hash -45230323, now seen corresponding path program 1 times [2018-11-10 09:31:14,247 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 09:31:14,247 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/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 [2018-11-10 09:31:14,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:31:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:31:14,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:31:14,742 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-10 09:31:15,098 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-10 09:31:16,461 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-10 09:31:16,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:31:16,575 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 09:31:16,583 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:31:16,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-10 09:31:16,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 09:31:16,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 09:31:16,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-10 09:31:16,584 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand 6 states. [2018-11-10 09:31:20,094 WARN L179 SmtUtils]: Spent 1.63 s on a formula simplification that was a NOOP. DAG size: 17 [2018-11-10 09:31:29,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:31:29,071 INFO L93 Difference]: Finished difference Result 95 states and 121 transitions. [2018-11-10 09:31:29,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 09:31:29,075 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-11-10 09:31:29,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 09:31:29,076 INFO L225 Difference]: With dead ends: 95 [2018-11-10 09:31:29,076 INFO L226 Difference]: Without dead ends: 70 [2018-11-10 09:31:29,077 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-10 09:31:29,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-10 09:31:29,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 50. [2018-11-10 09:31:29,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-10 09:31:29,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2018-11-10 09:31:29,085 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 21 [2018-11-10 09:31:29,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 09:31:29,085 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2018-11-10 09:31:29,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 09:31:29,085 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2018-11-10 09:31:29,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 09:31:29,086 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:31:29,086 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:31:29,086 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:31:29,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:31:29,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1729777039, now seen corresponding path program 1 times [2018-11-10 09:31:29,087 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 09:31:29,087 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-10 09:31:29,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:31:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:31:29,147 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:31:29,392 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-11-10 09:31:29,959 WARN L179 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-11-10 09:31:31,143 WARN L179 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-11-10 09:31:31,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:31:31,157 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 09:31:31,168 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:31:31,168 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 09:31:31,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 09:31:31,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 09:31:31,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-10 09:31:31,169 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand 5 states. [2018-11-10 09:31:34,224 WARN L179 SmtUtils]: Spent 1.75 s on a formula simplification that was a NOOP. DAG size: 12 [2018-11-10 09:31:37,090 WARN L179 SmtUtils]: Spent 1.97 s on a formula simplification that was a NOOP. DAG size: 13 [2018-11-10 09:31:48,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:31:48,678 INFO L93 Difference]: Finished difference Result 141 states and 184 transitions. [2018-11-10 09:31:48,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 09:31:48,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-11-10 09:31:48,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 09:31:48,688 INFO L225 Difference]: With dead ends: 141 [2018-11-10 09:31:48,688 INFO L226 Difference]: Without dead ends: 116 [2018-11-10 09:31:48,688 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-10 09:31:48,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-11-10 09:31:48,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 58. [2018-11-10 09:31:48,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-11-10 09:31:48,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2018-11-10 09:31:48,698 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 21 [2018-11-10 09:31:48,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 09:31:48,699 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2018-11-10 09:31:48,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 09:31:48,699 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2018-11-10 09:31:48,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-10 09:31:48,700 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:31:48,700 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:31:48,700 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:31:48,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:31:48,700 INFO L82 PathProgramCache]: Analyzing trace with hash 231028353, now seen corresponding path program 1 times [2018-11-10 09:31:48,700 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 09:31:48,700 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-10 09:31:48,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:31:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:31:48,803 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:31:49,260 WARN L179 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-10 09:31:49,742 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-10 09:31:50,199 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-10 09:31:51,233 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-10 09:31:52,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:31:52,998 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 09:31:53,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:31:53,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-10 09:31:53,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 09:31:53,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 09:31:53,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-10 09:31:53,008 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand 7 states. [2018-11-10 09:31:57,660 WARN L179 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 20 [2018-11-10 09:32:07,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:32:07,196 INFO L93 Difference]: Finished difference Result 107 states and 140 transitions. [2018-11-10 09:32:07,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 09:32:07,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-11-10 09:32:07,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 09:32:07,204 INFO L225 Difference]: With dead ends: 107 [2018-11-10 09:32:07,204 INFO L226 Difference]: Without dead ends: 72 [2018-11-10 09:32:07,205 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-10 09:32:07,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-11-10 09:32:07,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 50. [2018-11-10 09:32:07,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-10 09:32:07,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2018-11-10 09:32:07,214 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 22 [2018-11-10 09:32:07,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 09:32:07,214 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2018-11-10 09:32:07,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 09:32:07,215 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2018-11-10 09:32:07,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-10 09:32:07,215 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:32:07,216 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:32:07,216 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:32:07,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:32:07,216 INFO L82 PathProgramCache]: Analyzing trace with hash -248584584, now seen corresponding path program 1 times [2018-11-10 09:32:07,216 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 09:32:07,217 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-10 09:32:07,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:32:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:32:07,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:32:07,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:32:07,368 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 09:32:07,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:32:07,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 09:32:07,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 09:32:07,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 09:32:07,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 09:32:07,377 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand 4 states. [2018-11-10 09:32:07,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:32:07,409 INFO L93 Difference]: Finished difference Result 82 states and 108 transitions. [2018-11-10 09:32:07,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 09:32:07,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-11-10 09:32:07,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 09:32:07,410 INFO L225 Difference]: With dead ends: 82 [2018-11-10 09:32:07,410 INFO L226 Difference]: Without dead ends: 80 [2018-11-10 09:32:07,410 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-10 09:32:07,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-11-10 09:32:07,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 52. [2018-11-10 09:32:07,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-10 09:32:07,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2018-11-10 09:32:07,419 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 34 [2018-11-10 09:32:07,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 09:32:07,420 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2018-11-10 09:32:07,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 09:32:07,420 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2018-11-10 09:32:07,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-10 09:32:07,421 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:32:07,421 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:32:07,421 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:32:07,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:32:07,421 INFO L82 PathProgramCache]: Analyzing trace with hash -232527235, now seen corresponding path program 1 times [2018-11-10 09:32:07,422 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 09:32:07,422 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-11-10 09:32:07,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:32:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:32:07,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:32:08,073 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-10 09:32:08,808 WARN L179 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-10 09:32:09,533 WARN L179 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-10 09:32:10,829 WARN L179 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-10 09:32:18,344 WARN L179 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 22 [2018-11-10 09:32:21,838 WARN L179 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 23 [2018-11-10 09:32:24,529 WARN L179 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 23 [2018-11-10 09:32:26,961 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_prenex_1 (_ FloatingPoint 8 24)) (v_prenex_2 (_ FloatingPoint 8 24)) (main_~main__D~0 (_ FloatingPoint 8 24)) (main_~main__R~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) RNE 16.0)) (.cse2 ((_ to_fp 11 53) RNE main_~main__D~0)) (.cse0 ((_ to_fp 11 53) RNE v_prenex_1))) (and (fp.leq .cse0 .cse1) (fp.leq main_~main__R~0 (fp.neg main_~main__D~0)) (fp.leq .cse2 .cse1) (fp.geq .cse2 (_ +zero 11 53)) (fp.leq v_prenex_2 (fp.neg v_prenex_1)) (fp.geq .cse0 (_ +zero 11 53)) (= (fp.sub RNE (fp.sub RNE ((_ to_fp 8 24) RNE (_ bv0 32)) v_prenex_1) main_~main__D~0) c_main_~main__Y~0)))) is different from true [2018-11-10 09:32:33,015 WARN L832 $PredicateComparison]: unable to prove that (exists ((v_prenex_1 (_ FloatingPoint 8 24)) (v_prenex_2 (_ FloatingPoint 8 24)) (main_~main__D~0 (_ FloatingPoint 8 24)) (main_~main__R~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) RNE 16.0)) (.cse2 ((_ to_fp 11 53) RNE main_~main__D~0)) (.cse0 ((_ to_fp 11 53) RNE v_prenex_1))) (and (fp.leq .cse0 .cse1) (fp.leq main_~main__R~0 (fp.neg main_~main__D~0)) (fp.leq .cse2 .cse1) (fp.geq .cse2 (_ +zero 11 53)) (fp.leq v_prenex_2 (fp.neg v_prenex_1)) (fp.geq .cse0 (_ +zero 11 53)) (not (fp.geq ((_ to_fp 11 53) RNE (fp.sub RNE (fp.sub RNE ((_ to_fp 8 24) RNE (_ bv0 32)) v_prenex_1) main_~main__D~0)) (fp.neg ((_ to_fp 11 53) RNE 129.0))))))) is different from false [2018-11-10 09:32:35,032 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_prenex_1 (_ FloatingPoint 8 24)) (v_prenex_2 (_ FloatingPoint 8 24)) (main_~main__D~0 (_ FloatingPoint 8 24)) (main_~main__R~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) RNE 16.0)) (.cse2 ((_ to_fp 11 53) RNE main_~main__D~0)) (.cse0 ((_ to_fp 11 53) RNE v_prenex_1))) (and (fp.leq .cse0 .cse1) (fp.leq main_~main__R~0 (fp.neg main_~main__D~0)) (fp.leq .cse2 .cse1) (fp.geq .cse2 (_ +zero 11 53)) (fp.leq v_prenex_2 (fp.neg v_prenex_1)) (fp.geq .cse0 (_ +zero 11 53)) (not (fp.geq ((_ to_fp 11 53) RNE (fp.sub RNE (fp.sub RNE ((_ to_fp 8 24) RNE (_ bv0 32)) v_prenex_1) main_~main__D~0)) (fp.neg ((_ to_fp 11 53) RNE 129.0))))))) is different from true [2018-11-10 09:32:47,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:32:47,190 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 09:32:47,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:32:47,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-10 09:32:47,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-10 09:32:47,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-10 09:32:47,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=61, Unknown=3, NotChecked=34, Total=132 [2018-11-10 09:32:47,201 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand 12 states. [2018-11-10 09:32:52,432 WARN L179 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 25 [2018-11-10 09:33:05,970 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE c_main_~main__D~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) RNE 16.0)) (exists ((v_prenex_1 (_ FloatingPoint 8 24)) (main_~main__R~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) RNE v_prenex_1))) (and (fp.leq .cse1 ((_ to_fp 11 53) RNE 16.0)) (fp.geq .cse1 (_ +zero 11 53)) (= c_main_~main__S~0 (fp.sub RNE ((_ to_fp 8 24) RNE (_ bv0 32)) v_prenex_1)) (fp.leq main_~main__R~0 (fp.neg v_prenex_1))))) (exists ((v_prenex_1 (_ FloatingPoint 8 24)) (v_prenex_2 (_ FloatingPoint 8 24)) (main_~main__D~0 (_ FloatingPoint 8 24)) (main_~main__R~0 (_ FloatingPoint 8 24))) (let ((.cse3 ((_ to_fp 11 53) RNE 16.0)) (.cse4 ((_ to_fp 11 53) RNE main_~main__D~0)) (.cse2 ((_ to_fp 11 53) RNE v_prenex_1))) (and (fp.leq .cse2 .cse3) (fp.leq main_~main__R~0 (fp.neg main_~main__D~0)) (fp.leq .cse4 .cse3) (fp.geq .cse4 (_ +zero 11 53)) (fp.leq v_prenex_2 (fp.neg v_prenex_1)) (fp.geq .cse2 (_ +zero 11 53)) (= (fp.sub RNE (fp.sub RNE ((_ to_fp 8 24) RNE (_ bv0 32)) v_prenex_1) main_~main__D~0) c_main_~main__Y~0)))) (fp.geq .cse0 (_ +zero 11 53)))) is different from false [2018-11-10 09:33:14,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:33:14,870 INFO L93 Difference]: Finished difference Result 106 states and 133 transitions. [2018-11-10 09:33:14,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-10 09:33:14,887 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2018-11-10 09:33:14,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 09:33:14,888 INFO L225 Difference]: With dead ends: 106 [2018-11-10 09:33:14,889 INFO L226 Difference]: Without dead ends: 104 [2018-11-10 09:33:14,889 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 28.2s TimeCoverageRelationStatistics Valid=43, Invalid=75, Unknown=4, NotChecked=60, Total=182 [2018-11-10 09:33:14,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-11-10 09:33:14,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 75. [2018-11-10 09:33:14,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-11-10 09:33:14,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2018-11-10 09:33:14,908 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 34 [2018-11-10 09:33:14,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 09:33:14,908 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2018-11-10 09:33:14,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-10 09:33:14,908 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2018-11-10 09:33:14,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-10 09:33:14,909 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:33:14,909 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:33:14,910 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:33:14,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:33:14,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1486371464, now seen corresponding path program 1 times [2018-11-10 09:33:14,910 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 09:33:14,910 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-11-10 09:33:14,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:33:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:33:15,071 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:33:15,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:33:15,086 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 09:33:15,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:33:15,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 09:33:15,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 09:33:15,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 09:33:15,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 09:33:15,095 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand 3 states. [2018-11-10 09:33:15,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:33:15,320 INFO L93 Difference]: Finished difference Result 109 states and 144 transitions. [2018-11-10 09:33:15,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 09:33:15,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2018-11-10 09:33:15,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 09:33:15,322 INFO L225 Difference]: With dead ends: 109 [2018-11-10 09:33:15,322 INFO L226 Difference]: Without dead ends: 73 [2018-11-10 09:33:15,322 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 09:33:15,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-11-10 09:33:15,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-11-10 09:33:15,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-11-10 09:33:15,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2018-11-10 09:33:15,333 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 34 [2018-11-10 09:33:15,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 09:33:15,334 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2018-11-10 09:33:15,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 09:33:15,334 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2018-11-10 09:33:15,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-10 09:33:15,335 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:33:15,335 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:33:15,335 INFO L424 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:33:15,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:33:15,335 INFO L82 PathProgramCache]: Analyzing trace with hash 960504993, now seen corresponding path program 1 times [2018-11-10 09:33:15,336 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 09:33:15,336 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ecd144eb-dee7-40af-b0d5-8271e414c68f/bin-2019/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-11-10 09:33:15,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:33:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:33:15,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:33:16,073 WARN L179 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-10 09:33:16,582 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-10 09:33:18,068 WARN L179 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-10 09:33:22,113 WARN L179 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-10 09:33:27,709 WARN L179 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 22 [2018-11-10 09:33:34,448 WARN L179 SmtUtils]: Spent 2.78 s on a formula simplification that was a NOOP. DAG size: 25 [2018-11-10 09:33:42,838 WARN L179 SmtUtils]: Spent 2.69 s on a formula simplification that was a NOOP. DAG size: 25 [2018-11-10 09:33:46,449 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_prenex_3 (_ FloatingPoint 8 24)) (v_prenex_4 (_ FloatingPoint 8 24)) (main_~main__D~0 (_ FloatingPoint 8 24)) (main_~main__R~0 (_ FloatingPoint 8 24))) (let ((.cse1 (fp.add RNE ((_ to_fp 8 24) RNE (_ bv0 32)) v_prenex_3)) (.cse0 ((_ to_fp 11 53) RNE main_~main__D~0))) (and (fp.geq ((_ to_fp 11 53) RNE v_prenex_3) (_ +zero 11 53)) (fp.leq main_~main__R~0 (fp.neg main_~main__D~0)) (fp.leq .cse0 ((_ to_fp 11 53) RNE 16.0)) (fp.leq ((_ to_fp 11 53) RNE .cse1) ((_ to_fp 11 53) RNE 129.0)) (= (fp.sub RNE .cse1 main_~main__D~0) c_main_~main__Y~0) (fp.geq .cse0 (_ +zero 11 53)) (fp.geq v_prenex_4 v_prenex_3)))) is different from true [2018-11-10 09:33:52,518 WARN L832 $PredicateComparison]: unable to prove that (exists ((v_prenex_3 (_ FloatingPoint 8 24)) (v_prenex_4 (_ FloatingPoint 8 24)) (main_~main__D~0 (_ FloatingPoint 8 24)) (main_~main__R~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 11 53) RNE main_~main__D~0)) (.cse1 (fp.add RNE ((_ to_fp 8 24) RNE (_ bv0 32)) v_prenex_3)) (.cse2 ((_ to_fp 11 53) RNE 129.0))) (and (fp.geq ((_ to_fp 11 53) RNE v_prenex_3) (_ +zero 11 53)) (fp.leq main_~main__R~0 (fp.neg main_~main__D~0)) (fp.leq .cse0 ((_ to_fp 11 53) RNE 16.0)) (fp.leq ((_ to_fp 11 53) RNE .cse1) .cse2) (fp.geq .cse0 (_ +zero 11 53)) (not (fp.geq ((_ to_fp 11 53) RNE (fp.sub RNE .cse1 main_~main__D~0)) (fp.neg .cse2))) (fp.geq v_prenex_4 v_prenex_3)))) is different from false [2018-11-10 09:33:54,545 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_prenex_3 (_ FloatingPoint 8 24)) (v_prenex_4 (_ FloatingPoint 8 24)) (main_~main__D~0 (_ FloatingPoint 8 24)) (main_~main__R~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 11 53) RNE main_~main__D~0)) (.cse1 (fp.add RNE ((_ to_fp 8 24) RNE (_ bv0 32)) v_prenex_3)) (.cse2 ((_ to_fp 11 53) RNE 129.0))) (and (fp.geq ((_ to_fp 11 53) RNE v_prenex_3) (_ +zero 11 53)) (fp.leq main_~main__R~0 (fp.neg main_~main__D~0)) (fp.leq .cse0 ((_ to_fp 11 53) RNE 16.0)) (fp.leq ((_ to_fp 11 53) RNE .cse1) .cse2) (fp.geq .cse0 (_ +zero 11 53)) (not (fp.geq ((_ to_fp 11 53) RNE (fp.sub RNE .cse1 main_~main__D~0)) (fp.neg .cse2))) (fp.geq v_prenex_4 v_prenex_3)))) is different from true [2018-11-10 09:34:06,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:34:06,708 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 09:34:06,719 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:34:06,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-10 09:34:06,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-10 09:34:06,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-10 09:34:06,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=62, Unknown=3, NotChecked=34, Total=132 [2018-11-10 09:34:06,720 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand 12 states. [2018-11-10 09:34:11,428 WARN L179 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 26 DAG size of output: 13 [2018-11-10 09:34:14,762 WARN L179 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 26 DAG size of output: 13 [2018-11-10 09:34:30,914 WARN L179 SmtUtils]: Spent 11.89 s on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2018-11-10 09:35:44,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 09:35:44,650 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:122) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:187) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:150) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:354) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:382) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:673) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:602) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 49 more [2018-11-10 09:35:44,652 INFO L168 Benchmark]: Toolchain (without parser) took 286073.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -110.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2018-11-10 09:35:44,653 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 09:35:44,653 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.51 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 934.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-10 09:35:44,653 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.79 ms. Allocated memory is still 1.0 GB. Free memory is still 934.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 09:35:44,654 INFO L168 Benchmark]: Boogie Preprocessor took 17.50 ms. Allocated memory is still 1.0 GB. Free memory is still 934.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 09:35:44,654 INFO L168 Benchmark]: RCFGBuilder took 2097.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 934.7 MB in the beginning and 1.1 GB in the end (delta: -152.3 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2018-11-10 09:35:44,655 INFO L168 Benchmark]: TraceAbstraction took 283735.84 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -5.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.9 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2018-11-10 09:35:44,656 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 202.51 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 934.7 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 16.79 ms. Allocated memory is still 1.0 GB. Free memory is still 934.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.50 ms. Allocated memory is still 1.0 GB. Free memory is still 934.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 2097.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 934.7 MB in the beginning and 1.1 GB in the end (delta: -152.3 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 283735.84 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -5.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.9 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...