./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/inv_Newton_false-unreach-call.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_2c777e55-03d4-4234-bb2a-d87d789aaff6/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_Newton_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/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 66b71342bd068aaa5aa0847a6efcac54b98c09c9 ................................................................................................................................................................................................................................................................................................................................................................................................................... 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_2c777e55-03d4-4234-bb2a-d87d789aaff6/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_Newton_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/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 66b71342bd068aaa5aa0847a6efcac54b98c09c9 ...................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimCell_3 term size 47 --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:57:28,647 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:57:28,648 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:57:28,658 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:57:28,658 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:57:28,659 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:57:28,660 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:57:28,661 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:57:28,663 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:57:28,664 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:57:28,664 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:57:28,665 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:57:28,665 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:57:28,666 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:57:28,667 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:57:28,667 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:57:28,668 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:57:28,670 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:57:28,672 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:57:28,673 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:57:28,674 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:57:28,675 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:57:28,677 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:57:28,677 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:57:28,677 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:57:28,678 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:57:28,679 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:57:28,680 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:57:28,680 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:57:28,681 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:57:28,681 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:57:28,682 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:57:28,682 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:57:28,682 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:57:28,684 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:57:28,684 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:57:28,684 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 22:57:28,695 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:57:28,695 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:57:28,696 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:57:28,696 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 22:57:28,696 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 22:57:28,697 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 22:57:28,697 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 22:57:28,697 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 22:57:28,697 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 22:57:28,697 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 22:57:28,697 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 22:57:28,698 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:57:28,698 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 22:57:28,698 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:57:28,699 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 22:57:28,699 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:57:28,700 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:57:28,700 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:57:28,700 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:57:28,700 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 22:57:28,700 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:57:28,700 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:57:28,700 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:57:28,701 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:57:28,701 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:57:28,701 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:57:28,701 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:57:28,701 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:57:28,701 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:57:28,701 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:57:28,702 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 22:57:28,702 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:57:28,702 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:57:28,702 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:57:28,702 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_2c777e55-03d4-4234-bb2a-d87d789aaff6/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 -> 66b71342bd068aaa5aa0847a6efcac54b98c09c9 [2018-10-26 22:57:28,729 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:57:28,739 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:57:28,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:57:28,743 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:57:28,743 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:57:28,744 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/inv_Newton_false-unreach-call.c [2018-10-26 22:57:28,787 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/bin-2019/utaipan/data/538cb2cff/add1e4a3bdf84bac94b424349a0f4ae0/FLAG7499129ac [2018-10-26 22:57:29,165 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:57:29,165 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/sv-benchmarks/c/float-benchs/inv_Newton_false-unreach-call.c [2018-10-26 22:57:29,171 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/bin-2019/utaipan/data/538cb2cff/add1e4a3bdf84bac94b424349a0f4ae0/FLAG7499129ac [2018-10-26 22:57:29,181 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/bin-2019/utaipan/data/538cb2cff/add1e4a3bdf84bac94b424349a0f4ae0 [2018-10-26 22:57:29,183 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:57:29,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 22:57:29,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:57:29,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:57:29,189 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:57:29,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:57:29" (1/1) ... [2018-10-26 22:57:29,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c875d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:29, skipping insertion in model container [2018-10-26 22:57:29,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:57:29" (1/1) ... [2018-10-26 22:57:29,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:57:29,219 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:57:29,338 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:57:29,340 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:57:29,356 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:57:29,371 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:57:29,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:29 WrapperNode [2018-10-26 22:57:29,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:57:29,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:57:29,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:57:29,373 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:57:29,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:29" (1/1) ... [2018-10-26 22:57:29,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:29" (1/1) ... [2018-10-26 22:57:29,410 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:57:29,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:57:29,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:57:29,410 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:57:29,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:29" (1/1) ... [2018-10-26 22:57:29,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:29" (1/1) ... [2018-10-26 22:57:29,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:29" (1/1) ... [2018-10-26 22:57:29,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:29" (1/1) ... [2018-10-26 22:57:29,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:29" (1/1) ... [2018-10-26 22:57:29,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:29" (1/1) ... [2018-10-26 22:57:29,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:29" (1/1) ... [2018-10-26 22:57:29,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:57:29,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:57:29,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:57:29,435 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:57:29,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/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 22:57:29,556 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:57:29,557 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:57:29,557 INFO L130 BoogieDeclarations]: Found specification of procedure inv [2018-10-26 22:57:29,557 INFO L138 BoogieDeclarations]: Found implementation of procedure inv [2018-10-26 22:57:29,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:57:29,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:57:29,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:57:29,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:57:29,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 22:57:29,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 22:57:29,936 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:57:29,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:57:29 BoogieIcfgContainer [2018-10-26 22:57:29,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:57:29,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:57:29,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:57:29,942 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:57:29,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:57:29" (1/3) ... [2018-10-26 22:57:29,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6436cfcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:57:29, skipping insertion in model container [2018-10-26 22:57:29,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:29" (2/3) ... [2018-10-26 22:57:29,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6436cfcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:57:29, skipping insertion in model container [2018-10-26 22:57:29,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:57:29" (3/3) ... [2018-10-26 22:57:29,945 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_Newton_false-unreach-call.c [2018-10-26 22:57:29,954 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:57:29,961 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:57:29,974 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:57:30,000 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:57:30,001 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:57:30,001 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:57:30,001 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:57:30,001 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:57:30,001 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:57:30,001 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:57:30,001 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:57:30,017 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-10-26 22:57:30,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-26 22:57:30,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:57:30,023 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 22:57:30,024 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:57:30,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:57:30,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1869648858, now seen corresponding path program 1 times [2018-10-26 22:57:30,032 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:57:30,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:57:30,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:57:30,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:57:30,074 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:57:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:57:30,167 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 22:57:30,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:57:30,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:57:30,170 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:57:30,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 22:57:30,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 22:57:30,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:57:30,188 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2018-10-26 22:57:30,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:57:30,205 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2018-10-26 22:57:30,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 22:57:30,207 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-10-26 22:57:30,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:57:30,214 INFO L225 Difference]: With dead ends: 42 [2018-10-26 22:57:30,214 INFO L226 Difference]: Without dead ends: 19 [2018-10-26 22:57:30,217 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:57:30,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-26 22:57:30,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-26 22:57:30,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-26 22:57:30,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-26 22:57:30,247 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-26 22:57:30,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:57:30,248 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-26 22:57:30,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 22:57:30,248 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-26 22:57:30,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-26 22:57:30,249 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:57:30,249 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:57:30,249 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:57:30,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:57:30,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1432943462, now seen corresponding path program 1 times [2018-10-26 22:57:30,250 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:57:30,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:57:30,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:57:30,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:57:30,251 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:57:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:57:30,350 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 22:57:30,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:57:30,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:57:30,350 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:57:30,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:57:30,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:57:30,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:57:30,353 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 3 states. [2018-10-26 22:57:30,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:57:30,387 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-26 22:57:30,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:57:30,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-10-26 22:57:30,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:57:30,390 INFO L225 Difference]: With dead ends: 30 [2018-10-26 22:57:30,390 INFO L226 Difference]: Without dead ends: 21 [2018-10-26 22:57:30,390 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 22:57:30,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-26 22:57:30,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-26 22:57:30,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-26 22:57:30,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-26 22:57:30,393 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-10-26 22:57:30,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:57:30,393 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-26 22:57:30,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:57:30,393 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-26 22:57:30,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-26 22:57:30,394 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:57:30,394 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:57:30,396 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:57:30,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:57:30,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1031220372, now seen corresponding path program 1 times [2018-10-26 22:57:30,397 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:57:30,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:57:30,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:57:30,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:57:30,398 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:57:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:57:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:57:30,476 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 22:57:30,489 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 22:57:30,489 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 22:57:30,490 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 22:57:30,490 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 22:57:30,491 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 22:57:30,491 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 22:57:30,491 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 22:57:30,492 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 22:57:30,492 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 22:57:30,492 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 22:57:30,492 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 22:57:30,493 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 22:57:30,493 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 22:57:30,493 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 22:57:30,493 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 22:57:30,494 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 22:57:30,494 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 22:57:30,494 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 22:57:30,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:57:30 BoogieIcfgContainer [2018-10-26 22:57:30,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:57:30,509 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 22:57:30,509 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 22:57:30,509 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 22:57:30,510 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:57:29" (3/4) ... [2018-10-26 22:57:30,513 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 22:57:30,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 22:57:30,514 INFO L168 Benchmark]: Toolchain (without parser) took 1329.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 960.7 MB in the beginning and 1.1 GB in the end (delta: -98.6 MB). Peak memory consumption was 16.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:57:30,515 INFO L168 Benchmark]: CDTParser took 0.15 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 22:57:30,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 186.85 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:57:30,516 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.59 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:57:30,517 INFO L168 Benchmark]: Boogie Preprocessor took 24.27 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:57:30,517 INFO L168 Benchmark]: RCFGBuilder took 501.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -149.6 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2018-10-26 22:57:30,518 INFO L168 Benchmark]: TraceAbstraction took 571.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 34.9 MB). Peak memory consumption was 34.9 MB. Max. memory is 11.5 GB. [2018-10-26 22:57:30,519 INFO L168 Benchmark]: Witness Printer took 4.16 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:57:30,521 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 186.85 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.59 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.27 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 501.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -149.6 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 571.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 34.9 MB). Peak memory consumption was 34.9 MB. Max. memory is 11.5 GB. * Witness Printer took 4.16 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * 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.dealloc_~addr : $Pointer$ 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.dealloc_~addr : $Pointer$ 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.dealloc_~addr : $Pointer$ 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.dealloc_~addr : $Pointer$ 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: 18]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 38, overapproximation of someBinaryDOUBLEComparisonOperation at line 40, overapproximation of to_real at line 33. Possible FailurePath: [L48] double a,r; [L50] a = __VERIFIER_nondet_double() [L53] CALL, EXPR inv(a) [L28] double xi, xsi, temp; [L29] signed int cond, exp; [L30] CALL union double_int A_u, xi_u; [L30] RET union double_int A_u, xi_u; [L30] RET union double_int A_u, xi_u; [L31] CALL A_u.d = A [L31] RET A_u.d = A [L32] CALL, EXPR A_u.i [L32] RET, EXPR A_u.i [L32] exp = (signed int) ((A_u.i & 0x7FF00000) >> 20) - 1023 [L32] RET exp = (signed int) ((A_u.i & 0x7FF00000) >> 20) - 1023 [L33] CALL xi_u.d = 1 [L33] RET xi_u.d = 1 [L34] CALL xi_u.i = ((1023-exp) << 20) [L34] RET xi_u.i = ((1023-exp) << 20) [L35] CALL, EXPR xi_u.d [L35] RET, EXPR xi_u.d [L35] xi = xi_u.d [L35] RET xi = xi_u.d [L36] cond = 1 [L37] COND TRUE \read(cond) [L38] xsi = 2*xi-A*xi*xi [L39] temp = xsi-xi [L40] cond = ((temp > 1e-10) || (temp < -1e-10)) [L41] xi = xsi [L37] COND FALSE !(\read(cond)) [L43] return xi; [L43] return xi; [L43] RET return xi; [L53] EXPR inv(a) VAL [a=2145386503, inv(a)=2145386498] [L53] r = inv(a) [L55] CALL __VERIFIER_assert(r >= 0 && r <= 0.06) VAL [\old(cond)=0] [L18] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L18] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 44 SDtfs, 0 SDslu, 16 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 613 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 22:57:32,331 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:57:32,332 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:57:32,341 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:57:32,341 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:57:32,342 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:57:32,343 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:57:32,344 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:57:32,345 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:57:32,346 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:57:32,347 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:57:32,347 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:57:32,348 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:57:32,349 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:57:32,349 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:57:32,350 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:57:32,351 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:57:32,352 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:57:32,354 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:57:32,355 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:57:32,356 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:57:32,357 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:57:32,359 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:57:32,359 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:57:32,359 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:57:32,360 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:57:32,360 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:57:32,361 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:57:32,362 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:57:32,363 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:57:32,363 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:57:32,364 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:57:32,364 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:57:32,364 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:57:32,365 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:57:32,365 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:57:32,366 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-26 22:57:32,377 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:57:32,377 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:57:32,378 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:57:32,378 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 22:57:32,379 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 22:57:32,379 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 22:57:32,379 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 22:57:32,379 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 22:57:32,380 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:57:32,380 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 22:57:32,380 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 22:57:32,380 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:57:32,380 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:57:32,380 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:57:32,380 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:57:32,381 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 22:57:32,381 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 22:57:32,381 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 22:57:32,381 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:57:32,381 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:57:32,381 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:57:32,381 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:57:32,382 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:57:32,382 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:57:32,382 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:57:32,382 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:57:32,384 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:57:32,384 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:57:32,384 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-26 22:57:32,385 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:57:32,385 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 22:57:32,385 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 22:57:32,385 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_2c777e55-03d4-4234-bb2a-d87d789aaff6/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 -> 66b71342bd068aaa5aa0847a6efcac54b98c09c9 [2018-10-26 22:57:32,429 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:57:32,439 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:57:32,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:57:32,447 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:57:32,448 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:57:32,448 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/inv_Newton_false-unreach-call.c [2018-10-26 22:57:32,487 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/bin-2019/utaipan/data/fe817adcd/2a9b7e78ba194558a65e7f751aecb29b/FLAGf5e9cb9cd [2018-10-26 22:57:32,880 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:57:32,881 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/sv-benchmarks/c/float-benchs/inv_Newton_false-unreach-call.c [2018-10-26 22:57:32,887 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/bin-2019/utaipan/data/fe817adcd/2a9b7e78ba194558a65e7f751aecb29b/FLAGf5e9cb9cd [2018-10-26 22:57:32,896 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/bin-2019/utaipan/data/fe817adcd/2a9b7e78ba194558a65e7f751aecb29b [2018-10-26 22:57:32,899 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:57:32,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 22:57:32,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:57:32,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:57:32,905 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:57:32,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:57:32" (1/1) ... [2018-10-26 22:57:32,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5356465f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:32, skipping insertion in model container [2018-10-26 22:57:32,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:57:32" (1/1) ... [2018-10-26 22:57:32,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:57:32,932 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:57:33,093 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:57:33,097 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:57:33,124 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:57:33,151 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:57:33,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:33 WrapperNode [2018-10-26 22:57:33,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:57:33,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:57:33,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:57:33,153 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:57:33,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:33" (1/1) ... [2018-10-26 22:57:33,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:33" (1/1) ... [2018-10-26 22:57:33,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:57:33,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:57:33,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:57:33,191 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:57:33,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:33" (1/1) ... [2018-10-26 22:57:33,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:33" (1/1) ... [2018-10-26 22:57:33,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:33" (1/1) ... [2018-10-26 22:57:33,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:33" (1/1) ... [2018-10-26 22:57:33,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:33" (1/1) ... [2018-10-26 22:57:33,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:33" (1/1) ... [2018-10-26 22:57:33,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:33" (1/1) ... [2018-10-26 22:57:33,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:57:33,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:57:33,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:57:33,215 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:57:33,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/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 22:57:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:57:33,327 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:57:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure inv [2018-10-26 22:57:33,327 INFO L138 BoogieDeclarations]: Found implementation of procedure inv [2018-10-26 22:57:33,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:57:33,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:57:33,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:57:33,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:57:33,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 22:57:33,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 22:57:33,537 WARN L317 ript$VariableManager]: TermVariabe |qquantified_#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 22:57:35,729 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:57:35,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:57:35 BoogieIcfgContainer [2018-10-26 22:57:35,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:57:35,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:57:35,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:57:35,732 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:57:35,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:57:32" (1/3) ... [2018-10-26 22:57:35,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54af1145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:57:35, skipping insertion in model container [2018-10-26 22:57:35,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:33" (2/3) ... [2018-10-26 22:57:35,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54af1145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:57:35, skipping insertion in model container [2018-10-26 22:57:35,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:57:35" (3/3) ... [2018-10-26 22:57:35,740 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_Newton_false-unreach-call.c [2018-10-26 22:57:35,749 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:57:35,760 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:57:35,771 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:57:35,792 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:57:35,792 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:57:35,792 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:57:35,792 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:57:35,793 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:57:35,793 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:57:35,793 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:57:35,793 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:57:35,793 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:57:35,807 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-10-26 22:57:35,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-26 22:57:35,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:57:35,812 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 22:57:35,814 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:57:35,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:57:35,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1869648858, now seen corresponding path program 1 times [2018-10-26 22:57:35,822 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:57:35,823 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/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 22:57:35,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:57:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:57:35,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:57:35,930 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 22:57:35,930 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 22:57:35,946 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:57:35,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:57:35,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 22:57:35,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 22:57:35,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:57:35,965 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2018-10-26 22:57:35,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:57:35,982 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2018-10-26 22:57:35,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 22:57:35,983 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-10-26 22:57:35,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:57:35,990 INFO L225 Difference]: With dead ends: 42 [2018-10-26 22:57:35,990 INFO L226 Difference]: Without dead ends: 19 [2018-10-26 22:57:35,992 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:57:36,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-26 22:57:36,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-26 22:57:36,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-26 22:57:36,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-26 22:57:36,028 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-26 22:57:36,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:57:36,029 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-26 22:57:36,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 22:57:36,029 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-26 22:57:36,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-26 22:57:36,030 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:57:36,030 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:57:36,030 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:57:36,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:57:36,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1432943462, now seen corresponding path program 1 times [2018-10-26 22:57:36,031 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:57:36,031 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 22:57:36,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-10-26 22:57:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:57:36,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:57:36,193 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 22:57:36,193 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 22:57:36,201 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:57:36,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:57:36,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:57:36,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:57:36,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:57:36,203 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 3 states. [2018-10-26 22:57:38,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:57:38,423 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-26 22:57:38,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:57:38,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-10-26 22:57:38,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:57:38,427 INFO L225 Difference]: With dead ends: 30 [2018-10-26 22:57:38,427 INFO L226 Difference]: Without dead ends: 21 [2018-10-26 22:57:38,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 22:57:38,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-26 22:57:38,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-26 22:57:38,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-26 22:57:38,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-26 22:57:38,433 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-10-26 22:57:38,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:57:38,433 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-26 22:57:38,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:57:38,433 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-26 22:57:38,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-26 22:57:38,434 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:57:38,434 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:57:38,434 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:57:38,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:57:38,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1031220372, now seen corresponding path program 1 times [2018-10-26 22:57:38,435 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:57:38,435 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2c777e55-03d4-4234-bb2a-d87d789aaff6/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 22:57:38,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:57:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:57:39,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:57:39,947 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 22:57:39,950 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 22:57:39,955 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 172 [2018-10-26 22:57:40,062 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 22:57:40,066 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 22:57:40,068 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 107 [2018-10-26 22:57:40,068 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 22:57:40,123 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 88 [2018-10-26 22:57:40,137 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 22:57:40,138 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 79 [2018-10-26 22:57:40,139 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 22:57:40,187 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:57:40,274 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:57:40,441 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 22:57:40,441 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 22:57:40,443 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 22:57:40,444 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 22:57:40,445 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 142 [2018-10-26 22:57:40,625 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2018-10-26 22:57:40,657 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 22:57:40,885 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2018-10-26 22:57:40,886 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_arrayElimCell_3 term size 47 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) 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) [2018-10-26 22:57:40,889 INFO L168 Benchmark]: Toolchain (without parser) took 7988.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 954.6 MB in the beginning and 1.0 GB in the end (delta: -94.9 MB). Peak memory consumption was 64.5 MB. Max. memory is 11.5 GB. [2018-10-26 22:57:40,890 INFO L168 Benchmark]: CDTParser took 0.39 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 22:57:40,890 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.73 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 937.1 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. [2018-10-26 22:57:40,891 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.58 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 22:57:40,891 INFO L168 Benchmark]: Boogie Preprocessor took 24.25 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 22:57:40,891 INFO L168 Benchmark]: RCFGBuilder took 2514.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -184.5 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2018-10-26 22:57:40,892 INFO L168 Benchmark]: TraceAbstraction took 5158.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 72.1 MB). Peak memory consumption was 72.1 MB. Max. memory is 11.5 GB. [2018-10-26 22:57:40,894 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 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 250.73 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 937.1 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.58 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 24.25 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 2514.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -184.5 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5158.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 72.1 MB). Peak memory consumption was 72.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimCell_3 term size 47 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimCell_3 term size 47: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...