./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/interpolation_true-unreach-call.c.v+cfa-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_a519fcd9-579f-4d6d-92ee-b61d34f45513/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation_true-unreach-call.c.v+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/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 bc3a4b6baf54a52b2668f0d190858e0c4ceb7af5 .................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_a519fcd9-579f-4d6d-92ee-b61d34f45513/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation_true-unreach-call.c.v+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/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 bc3a4b6baf54a52b2668f0d190858e0c4ceb7af5 ...................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2018-10-26 19:49:54,079 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:49:54,080 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:49:54,090 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:49:54,090 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:49:54,091 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:49:54,092 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:49:54,093 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:49:54,095 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:49:54,095 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:49:54,096 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:49:54,096 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:49:54,097 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:49:54,097 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:49:54,099 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:49:54,099 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:49:54,100 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:49:54,101 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:49:54,103 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:49:54,104 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:49:54,105 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:49:54,106 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:49:54,108 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:49:54,108 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:49:54,108 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:49:54,109 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:49:54,109 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:49:54,111 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:49:54,111 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:49:54,112 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:49:54,112 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:49:54,112 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 19:49:54,113 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 19:49:54,113 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 19:49:54,113 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 19:49:54,115 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 19:49:54,115 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 19:49:54,126 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:49:54,126 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:49:54,126 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:49:54,127 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 19:49:54,127 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 19:49:54,127 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 19:49:54,127 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 19:49:54,127 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 19:49:54,127 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 19:49:54,127 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 19:49:54,128 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 19:49:54,128 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:49:54,128 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 19:49:54,128 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:49:54,128 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 19:49:54,129 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:49:54,129 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:49:54,129 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:49:54,129 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:49:54,129 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 19:49:54,129 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:49:54,129 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:49:54,130 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:49:54,132 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:49:54,132 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:49:54,132 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:49:54,132 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:49:54,132 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:49:54,133 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:49:54,133 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:49:54,133 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 19:49:54,133 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:49:54,133 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:49:54,133 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:49:54,133 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_a519fcd9-579f-4d6d-92ee-b61d34f45513/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 -> bc3a4b6baf54a52b2668f0d190858e0c4ceb7af5 [2018-10-26 19:49:54,161 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:49:54,171 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:49:54,174 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:49:54,175 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:49:54,175 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:49:54,176 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/interpolation_true-unreach-call.c.v+cfa-reducer.c [2018-10-26 19:49:54,228 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/bin-2019/utaipan/data/66f67395b/c4b8a697aa424894afc97ea86eae28ad/FLAG9c722119a [2018-10-26 19:49:54,612 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:49:54,612 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/sv-benchmarks/c/float-benchs/interpolation_true-unreach-call.c.v+cfa-reducer.c [2018-10-26 19:49:54,619 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/bin-2019/utaipan/data/66f67395b/c4b8a697aa424894afc97ea86eae28ad/FLAG9c722119a [2018-10-26 19:49:54,630 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/bin-2019/utaipan/data/66f67395b/c4b8a697aa424894afc97ea86eae28ad [2018-10-26 19:49:54,632 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:49:54,633 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 19:49:54,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:49:54,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:49:54,638 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:49:54,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:49:54" (1/1) ... [2018-10-26 19:49:54,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b1d7a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:54, skipping insertion in model container [2018-10-26 19:49:54,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:49:54" (1/1) ... [2018-10-26 19:49:54,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:49:54,665 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:49:54,795 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:49:54,798 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:49:54,818 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:49:54,833 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:49:54,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:54 WrapperNode [2018-10-26 19:49:54,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:49:54,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:49:54,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:49:54,834 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:49:54,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:54" (1/1) ... [2018-10-26 19:49:54,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:54" (1/1) ... [2018-10-26 19:49:54,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:49:54,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:49:54,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:49:54,876 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:49:54,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:54" (1/1) ... [2018-10-26 19:49:54,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:54" (1/1) ... [2018-10-26 19:49:54,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:54" (1/1) ... [2018-10-26 19:49:54,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:54" (1/1) ... [2018-10-26 19:49:54,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:54" (1/1) ... [2018-10-26 19:49:54,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:54" (1/1) ... [2018-10-26 19:49:54,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:54" (1/1) ... [2018-10-26 19:49:54,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:49:54,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:49:54,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:49:54,900 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:49:54,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/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 [2018-10-26 19:49:55,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 19:49:55,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 19:49:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:49:55,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:49:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 19:49:55,033 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 19:49:55,539 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:49:55,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:49:55 BoogieIcfgContainer [2018-10-26 19:49:55,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:49:55,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:49:55,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:49:55,545 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:49:55,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:49:54" (1/3) ... [2018-10-26 19:49:55,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5f6722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:49:55, skipping insertion in model container [2018-10-26 19:49:55,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:54" (2/3) ... [2018-10-26 19:49:55,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5f6722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:49:55, skipping insertion in model container [2018-10-26 19:49:55,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:49:55" (3/3) ... [2018-10-26 19:49:55,549 INFO L112 eAbstractionObserver]: Analyzing ICFG interpolation_true-unreach-call.c.v+cfa-reducer.c [2018-10-26 19:49:55,560 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:49:55,568 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:49:55,584 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:49:55,613 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:49:55,614 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:49:55,614 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:49:55,614 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:49:55,614 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:49:55,614 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:49:55,614 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:49:55,615 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:49:55,631 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-10-26 19:49:55,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 19:49:55,637 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:49:55,637 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:49:55,640 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:49:55,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:49:55,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1189108249, now seen corresponding path program 1 times [2018-10-26 19:49:55,648 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 19:49:55,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:55,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:49:55,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:55,699 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 19:49:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:49:56,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:49:56,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:49:56,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 19:49:56,027 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 19:49:56,031 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:49:56,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:49:56,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:49:56,042 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2018-10-26 19:49:56,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:49:56,221 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2018-10-26 19:49:56,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 19:49:56,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-10-26 19:49:56,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:49:56,229 INFO L225 Difference]: With dead ends: 35 [2018-10-26 19:49:56,229 INFO L226 Difference]: Without dead ends: 19 [2018-10-26 19:49:56,232 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:49:56,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-26 19:49:56,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-26 19:49:56,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-26 19:49:56,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-10-26 19:49:56,262 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2018-10-26 19:49:56,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:49:56,263 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-10-26 19:49:56,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:49:56,263 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-10-26 19:49:56,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 19:49:56,264 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:49:56,264 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:49:56,265 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:49:56,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:49:56,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1204212286, now seen corresponding path program 1 times [2018-10-26 19:49:56,265 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 19:49:56,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:56,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:49:56,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:56,269 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 19:49:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:49:56,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:49:56,373 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:49:56,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:49:56,374 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 19:49:56,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:49:56,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:49:56,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:49:56,376 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2018-10-26 19:49:56,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:49:56,411 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2018-10-26 19:49:56,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:49:56,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-10-26 19:49:56,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:49:56,412 INFO L225 Difference]: With dead ends: 37 [2018-10-26 19:49:56,412 INFO L226 Difference]: Without dead ends: 29 [2018-10-26 19:49:56,413 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:49:56,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-26 19:49:56,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2018-10-26 19:49:56,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-26 19:49:56,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-10-26 19:49:56,418 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2018-10-26 19:49:56,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:49:56,418 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-10-26 19:49:56,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:49:56,418 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-10-26 19:49:56,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-26 19:49:56,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:49:56,419 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:49:56,419 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:49:56,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:49:56,419 INFO L82 PathProgramCache]: Analyzing trace with hash -900055575, now seen corresponding path program 1 times [2018-10-26 19:49:56,419 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 19:49:56,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:56,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:49:56,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:56,420 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 19:49:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 19:49:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 19:49:56,523 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 19:49:56,541 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,542 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,543 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,544 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,545 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,546 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,546 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,550 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,551 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,554 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,555 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,555 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,555 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,556 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,556 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,556 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,557 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,557 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,557 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,562 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,562 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,562 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,563 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,563 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:49:56,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:49:56 BoogieIcfgContainer [2018-10-26 19:49:56,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:49:56,586 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 19:49:56,587 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 19:49:56,587 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 19:49:56,587 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:49:55" (3/4) ... [2018-10-26 19:49:56,590 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 19:49:56,591 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 19:49:56,591 INFO L168 Benchmark]: Toolchain (without parser) took 1958.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 961.8 MB in the beginning and 1.1 GB in the end (delta: -111.8 MB). Peak memory consumption was 43.4 MB. Max. memory is 11.5 GB. [2018-10-26 19:49:56,592 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 19:49:56,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 199.55 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 950.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-10-26 19:49:56,593 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.47 ms. Allocated memory is still 1.0 GB. Free memory was 950.9 MB in the beginning and 948.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 19:49:56,593 INFO L168 Benchmark]: Boogie Preprocessor took 23.23 ms. Allocated memory is still 1.0 GB. Free memory was 948.2 MB in the beginning and 945.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 19:49:56,595 INFO L168 Benchmark]: RCFGBuilder took 640.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -173.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. [2018-10-26 19:49:56,595 INFO L168 Benchmark]: TraceAbstraction took 1044.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 11.5 GB. [2018-10-26 19:49:56,596 INFO L168 Benchmark]: Witness Printer took 4.70 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. [2018-10-26 19:49:56,599 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 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 199.55 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 950.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.47 ms. Allocated memory is still 1.0 GB. Free memory was 950.9 MB in the beginning and 948.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.23 ms. Allocated memory is still 1.0 GB. Free memory was 948.2 MB in the beginning and 945.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 640.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -173.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1044.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 11.5 GB. * Witness Printer took 4.70 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.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 46]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 33, overapproximation of to_real at line 13, overapproximation of someBinaryArithmeticFLOAToperation at line 31. Possible FailurePath: [L1] int __return_main; [L7] int __return_125; VAL [\old(__return_125)=28, \old(__return_main)=36, __return_125=0, __return_main=0] [L10] int main__i; [L11] float main__z; [L12] float main__t; [L13] CALL float main__min[5] = { 5, 10, 12, 30, 150 }; [L13] RET float main__min[5] = { 5, 10, 12, 30, 150 }; [L13] RET float main__min[5] = { 5, 10, 12, 30, 150 }; [L13] RET float main__min[5] = { 5, 10, 12, 30, 150 }; [L13] RET float main__min[5] = { 5, 10, 12, 30, 150 }; [L13] RET float main__min[5] = { 5, 10, 12, 30, 150 }; [L13] RET float main__min[5] = { 5, 10, 12, 30, 150 }; [L14] CALL float main__max[5] = { 10, 12, 30, 150, 300 }; [L14] RET float main__max[5] = { 10, 12, 30, 150, 300 }; [L14] RET float main__max[5] = { 10, 12, 30, 150, 300 }; [L14] RET float main__max[5] = { 10, 12, 30, 150, 300 }; [L14] RET float main__max[5] = { 10, 12, 30, 150, 300 }; [L14] RET float main__max[5] = { 10, 12, 30, 150, 300 }; [L14] RET float main__max[5] = { 10, 12, 30, 150, 300 }; [L15] main__t = __VERIFIER_nondet_float() [L16] int main____CPAchecker_TMP_0; [L17] CALL, EXPR main__min[0] [L17] RET, EXPR main__min[0] [L17] COND TRUE main__t >= (main__min[0]) [L19] CALL, EXPR main__max[4UL] [L19] RET, EXPR main__max[4UL] [L19] COND TRUE main__t <= (main__max[4UL]) [L21] main____CPAchecker_TMP_0 = 1 VAL [\old(__return_125)=0, __return_125=0, __return_main=0] [L22] COND TRUE main____CPAchecker_TMP_0 != 0 [L24] main__i = 0 VAL [\old(__return_125)=0, __return_125=0, __return_main=0] [L26] COND TRUE main__i < 5UL [L28] CALL, EXPR main__max[main__i] [L28] RET, EXPR main__max[main__i] [L28] COND TRUE main__t <= (main__max[main__i]) [L31] CALL, EXPR main__min[main__i] [L31] RET, EXPR main__min[main__i] [L31] CALL, EXPR main__max[main__i] [L31] RET, EXPR main__max[main__i] [L31] CALL, EXPR main__min[main__i] [L31] RET, EXPR main__min[main__i] [L31] main__z = (main__t - (main__min[main__i])) / ((main__max[main__i]) - (main__min[main__i])) [L32] int main____CPAchecker_TMP_1; VAL [\old(__return_125)=0, __return_125=0, __return_main=0] [L33] COND FALSE !(main__z >= 0.0) VAL [\old(__return_125)=0, __return_125=0, __return_main=0] [L59] main____CPAchecker_TMP_1 = 0 VAL [\old(__return_125)=0, __return_125=0, __return_main=0] [L40] int __tmp_1; [L41] __tmp_1 = main____CPAchecker_TMP_1 [L42] int __VERIFIER_assert__cond; [L43] __VERIFIER_assert__cond = __tmp_1 VAL [\old(__return_125)=0, __return_125=0, __return_main=0] [L44] COND TRUE __VERIFIER_assert__cond == 0 VAL [\old(__return_125)=0, __return_125=0, __return_main=0] [L46] __VERIFIER_error() VAL [\old(__return_125)=0, __return_125=0, __return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 1 error locations. UNSAFE Result, 0.9s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 45 SDtfs, 35 SDslu, 77 SDs, 0 SdLazy, 19 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 2 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 [2018-10-26 19:49:58,496 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:49:58,498 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:49:58,508 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:49:58,508 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:49:58,509 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:49:58,510 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:49:58,511 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:49:58,513 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:49:58,514 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:49:58,514 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:49:58,515 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:49:58,516 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:49:58,516 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:49:58,517 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:49:58,518 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:49:58,519 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:49:58,520 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:49:58,522 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:49:58,523 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:49:58,524 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:49:58,525 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:49:58,528 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:49:58,528 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:49:58,528 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:49:58,529 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:49:58,530 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:49:58,530 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:49:58,531 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:49:58,532 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:49:58,532 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:49:58,533 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 19:49:58,533 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 19:49:58,534 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 19:49:58,534 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 19:49:58,535 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 19:49:58,535 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-26 19:49:58,548 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:49:58,549 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:49:58,553 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:49:58,553 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 19:49:58,553 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 19:49:58,553 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 19:49:58,553 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 19:49:58,554 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 19:49:58,554 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:49:58,555 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 19:49:58,555 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 19:49:58,555 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:49:58,555 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:49:58,555 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:49:58,555 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:49:58,556 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 19:49:58,556 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 19:49:58,556 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 19:49:58,556 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:49:58,556 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:49:58,557 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:49:58,557 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:49:58,557 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:49:58,557 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:49:58,557 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:49:58,558 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:49:58,558 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:49:58,558 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:49:58,558 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-26 19:49:58,558 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:49:58,558 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 19:49:58,559 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 19:49:58,559 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_a519fcd9-579f-4d6d-92ee-b61d34f45513/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 -> bc3a4b6baf54a52b2668f0d190858e0c4ceb7af5 [2018-10-26 19:49:58,622 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:49:58,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:49:58,642 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:49:58,643 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:49:58,643 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:49:58,644 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/interpolation_true-unreach-call.c.v+cfa-reducer.c [2018-10-26 19:49:58,684 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/bin-2019/utaipan/data/628e9dd3c/40baabde3e344935a9c48a18c0d73c81/FLAGeb0f5fd07 [2018-10-26 19:49:59,070 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:49:59,071 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/sv-benchmarks/c/float-benchs/interpolation_true-unreach-call.c.v+cfa-reducer.c [2018-10-26 19:49:59,075 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/bin-2019/utaipan/data/628e9dd3c/40baabde3e344935a9c48a18c0d73c81/FLAGeb0f5fd07 [2018-10-26 19:49:59,086 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/bin-2019/utaipan/data/628e9dd3c/40baabde3e344935a9c48a18c0d73c81 [2018-10-26 19:49:59,089 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:49:59,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 19:49:59,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:49:59,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:49:59,096 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:49:59,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:49:59" (1/1) ... [2018-10-26 19:49:59,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b8b99c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:59, skipping insertion in model container [2018-10-26 19:49:59,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:49:59" (1/1) ... [2018-10-26 19:49:59,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:49:59,128 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:49:59,271 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:49:59,276 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:49:59,304 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:49:59,322 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:49:59,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:59 WrapperNode [2018-10-26 19:49:59,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:49:59,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:49:59,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:49:59,323 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:49:59,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:59" (1/1) ... [2018-10-26 19:49:59,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:59" (1/1) ... [2018-10-26 19:49:59,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:49:59,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:49:59,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:49:59,373 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:49:59,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:59" (1/1) ... [2018-10-26 19:49:59,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:59" (1/1) ... [2018-10-26 19:49:59,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:59" (1/1) ... [2018-10-26 19:49:59,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:59" (1/1) ... [2018-10-26 19:49:59,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:59" (1/1) ... [2018-10-26 19:49:59,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:59" (1/1) ... [2018-10-26 19:49:59,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:59" (1/1) ... [2018-10-26 19:49:59,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:49:59,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:49:59,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:49:59,420 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:49:59,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/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 [2018-10-26 19:49:59,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 19:49:59,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 19:49:59,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:49:59,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:49:59,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 19:49:59,546 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 19:49:59,987 WARN L317 ript$VariableManager]: TermVariabe |qquantified_#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 19:50:01,028 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:50:01,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:50:01 BoogieIcfgContainer [2018-10-26 19:50:01,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:50:01,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:50:01,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:50:01,032 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:50:01,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:49:59" (1/3) ... [2018-10-26 19:50:01,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11797d91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:50:01, skipping insertion in model container [2018-10-26 19:50:01,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:49:59" (2/3) ... [2018-10-26 19:50:01,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11797d91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:50:01, skipping insertion in model container [2018-10-26 19:50:01,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:50:01" (3/3) ... [2018-10-26 19:50:01,044 INFO L112 eAbstractionObserver]: Analyzing ICFG interpolation_true-unreach-call.c.v+cfa-reducer.c [2018-10-26 19:50:01,050 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:50:01,057 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:50:01,072 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:50:01,094 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:50:01,095 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:50:01,095 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:50:01,095 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:50:01,095 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:50:01,096 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:50:01,096 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:50:01,096 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:50:01,096 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:50:01,110 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-10-26 19:50:01,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 19:50:01,115 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:50:01,116 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:50:01,118 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:50:01,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:50:01,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1189108249, now seen corresponding path program 1 times [2018-10-26 19:50:01,129 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 19:50:01,130 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/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 [2018-10-26 19:50:01,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:50:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:50:01,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:50:01,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:50:01,465 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 19:50:01,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:50:01,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:50:01,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:50:01,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:50:01,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:50:01,500 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2018-10-26 19:50:03,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:50:03,819 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2018-10-26 19:50:03,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:50:03,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-10-26 19:50:03,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:50:03,866 INFO L225 Difference]: With dead ends: 47 [2018-10-26 19:50:03,867 INFO L226 Difference]: Without dead ends: 29 [2018-10-26 19:50:03,869 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:50:03,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-26 19:50:03,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2018-10-26 19:50:03,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-26 19:50:03,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2018-10-26 19:50:03,900 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 16 [2018-10-26 19:50:03,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:50:03,900 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2018-10-26 19:50:03,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:50:03,900 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2018-10-26 19:50:03,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-26 19:50:03,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:50:03,901 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:50:03,901 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:50:03,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:50:03,901 INFO L82 PathProgramCache]: Analyzing trace with hash -915159612, now seen corresponding path program 1 times [2018-10-26 19:50:03,903 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 19:50:03,903 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/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 [2018-10-26 19:50:03,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:50:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:50:04,200 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:50:04,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:50:04,259 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 19:50:04,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:50:04,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:50:04,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:50:04,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:50:04,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:50:04,275 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2018-10-26 19:50:05,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:50:05,974 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2018-10-26 19:50:05,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:50:05,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-10-26 19:50:05,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:50:05,976 INFO L225 Difference]: With dead ends: 24 [2018-10-26 19:50:05,976 INFO L226 Difference]: Without dead ends: 20 [2018-10-26 19:50:05,976 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:50:05,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-26 19:50:05,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-26 19:50:05,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-26 19:50:05,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-10-26 19:50:05,980 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2018-10-26 19:50:05,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:50:05,980 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-10-26 19:50:05,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:50:05,980 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-10-26 19:50:05,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-26 19:50:05,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:50:05,981 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:50:05,981 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:50:05,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:50:05,981 INFO L82 PathProgramCache]: Analyzing trace with hash -900055575, now seen corresponding path program 1 times [2018-10-26 19:50:05,982 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 19:50:05,982 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a519fcd9-579f-4d6d-92ee-b61d34f45513/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 [2018-10-26 19:50:06,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:50:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:50:06,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:50:08,641 WARN L179 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 93 DAG size of output: 83 [2018-10-26 19:50:08,695 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2018-10-26 19:50:08,695 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:50:09,170 INFO L303 Elim1Store]: Index analysis took 224 ms [2018-10-26 19:50:09,172 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 64 [2018-10-26 19:50:09,192 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2018-10-26 19:50:09,227 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:09,259 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 39 [2018-10-26 19:50:09,299 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:09,312 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:09,329 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:09,419 INFO L303 Elim1Store]: Index analysis took 156 ms [2018-10-26 19:50:09,420 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 55 [2018-10-26 19:50:09,454 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:09,467 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:09,483 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:09,493 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:09,507 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:09,520 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:09,701 INFO L303 Elim1Store]: Index analysis took 276 ms [2018-10-26 19:50:09,702 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 79 [2018-10-26 19:50:09,751 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:09,770 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:09,785 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:09,805 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:09,819 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:09,836 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:09,850 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:09,867 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:09,884 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:09,898 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:10,169 INFO L303 Elim1Store]: Index analysis took 460 ms [2018-10-26 19:50:10,170 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 116 [2018-10-26 19:50:10,172 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-10-26 19:50:10,496 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:50:10,718 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:50:10,901 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:50:11,080 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:50:11,404 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:11,405 INFO L303 Elim1Store]: Index analysis took 104 ms [2018-10-26 19:50:11,406 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 105 [2018-10-26 19:50:11,431 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 57 [2018-10-26 19:50:11,459 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:11,486 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 60 [2018-10-26 19:50:11,498 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:11,503 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:11,507 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:11,531 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 71 [2018-10-26 19:50:11,563 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:11,573 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:11,581 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:11,587 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:11,595 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:11,602 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:11,694 INFO L303 Elim1Store]: Index analysis took 159 ms [2018-10-26 19:50:11,695 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 90 [2018-10-26 19:50:11,719 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:11,725 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:11,732 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:11,735 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:11,742 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:11,782 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:11,810 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:11,838 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:11,870 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:11,898 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:12,093 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:12,094 INFO L303 Elim1Store]: Index analysis took 393 ms [2018-10-26 19:50:12,095 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 132 [2018-10-26 19:50:12,096 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-10-26 19:50:12,150 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:50:12,181 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:50:12,210 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:50:12,235 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:50:12,288 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:50:12,347 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:50:12,454 INFO L267 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:50:12,454 INFO L202 ElimStorePlain]: Needed 14 recursive calls to eliminate 12 variables, input treesize:156, output treesize:103 [2018-10-26 19:50:13,089 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-10-26 19:50:13,324 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:13,341 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:50:13,366 INFO L303 Elim1Store]: Index analysis took 272 ms [2018-10-26 19:50:13,367 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 138 [2018-10-26 19:50:13,761 INFO L303 Elim1Store]: Index analysis took 392 ms [2018-10-26 19:50:14,724 INFO L477 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 71 [2018-10-26 19:50:14,727 INFO L267 ElimStorePlain]: Start of recursive call 3: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2018-10-26 19:50:28,645 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2018-10-26 19:50:28,646 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.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.ElimStorePlain.doElimAllRec(ElimStorePlain.java:258) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) 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) ... 47 more [2018-10-26 19:50:28,649 INFO L168 Benchmark]: Toolchain (without parser) took 29559.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.0 MB). Free memory was 954.6 MB in the beginning and 936.0 MB in the end (delta: 18.6 MB). Peak memory consumption was 191.6 MB. Max. memory is 11.5 GB. [2018-10-26 19:50:28,650 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-10-26 19:50:28,650 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.76 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-10-26 19:50:28,651 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.14 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 19:50:28,651 INFO L168 Benchmark]: Boogie Preprocessor took 47.53 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 19:50:28,651 INFO L168 Benchmark]: RCFGBuilder took 1608.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.0 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -191.7 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2018-10-26 19:50:28,652 INFO L168 Benchmark]: TraceAbstraction took 27619.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 936.0 MB in the end (delta: 192.8 MB). Peak memory consumption was 192.8 MB. Max. memory is 11.5 GB. [2018-10-26 19:50:28,665 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 229.76 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 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 49.14 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.53 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1608.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.0 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -191.7 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 27619.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 936.0 MB in the end (delta: 192.8 MB). Peak memory consumption was 192.8 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...