./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/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 3a552ed0b53624bc27612451ed4207d0101db39b .................................................................................................................................................................................................................................................... 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_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/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 3a552ed0b53624bc27612451ed4207d0101db39b ................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 16:04:00,630 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:04:00,632 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:04:00,642 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:04:00,642 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:04:00,643 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:04:00,644 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:04:00,646 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:04:00,648 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:04:00,649 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:04:00,650 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:04:00,650 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:04:00,652 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:04:00,652 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:04:00,653 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:04:00,654 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:04:00,655 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:04:00,657 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:04:00,658 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:04:00,660 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:04:00,661 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:04:00,662 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:04:00,664 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:04:00,665 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:04:00,665 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:04:00,666 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:04:00,667 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:04:00,668 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:04:00,668 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:04:00,669 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:04:00,669 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:04:00,670 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:04:00,670 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:04:00,670 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:04:00,672 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:04:00,673 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:04:00,673 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 16:04:00,684 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:04:00,684 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:04:00,685 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:04:00,685 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:04:00,685 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:04:00,685 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:04:00,686 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:04:00,686 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 16:04:00,686 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:04:00,686 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:04:00,686 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 16:04:00,686 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 16:04:00,686 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:04:00,688 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:04:00,688 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:04:00,688 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:04:00,689 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:04:00,689 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:04:00,689 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:04:00,689 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:04:00,689 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:04:00,689 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:04:00,689 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:04:00,690 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:04:00,690 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:04:00,690 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:04:00,690 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:04:00,690 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:04:00,690 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:04:00,690 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:04:00,691 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:04:00,691 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:04:00,691 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:04:00,691 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 16:04:00,691 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:04:00,691 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:04:00,691 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 16:04:00,691 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_19ac6374-3b00-4bea-98d3-a86b57969dd7/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 -> 3a552ed0b53624bc27612451ed4207d0101db39b [2018-11-18 16:04:00,719 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:04:00,729 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:04:00,731 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:04:00,733 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:04:00,733 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:04:00,734 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-11-18 16:04:00,782 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/data/3608cab42/1eaa116a1941409b991aa93b31b48897/FLAG4f0bb95fd [2018-11-18 16:04:01,163 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:04:01,163 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-11-18 16:04:01,169 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/data/3608cab42/1eaa116a1941409b991aa93b31b48897/FLAG4f0bb95fd [2018-11-18 16:04:01,181 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/data/3608cab42/1eaa116a1941409b991aa93b31b48897 [2018-11-18 16:04:01,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:04:01,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:04:01,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:04:01,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:04:01,189 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:04:01,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:04:01" (1/1) ... [2018-11-18 16:04:01,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec3be2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:01, skipping insertion in model container [2018-11-18 16:04:01,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:04:01" (1/1) ... [2018-11-18 16:04:01,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:04:01,217 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:04:01,331 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:04:01,335 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:04:01,345 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:04:01,354 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:04:01,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:01 WrapperNode [2018-11-18 16:04:01,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:04:01,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:04:01,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:04:01,355 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:04:01,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:01" (1/1) ... [2018-11-18 16:04:01,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:01" (1/1) ... [2018-11-18 16:04:01,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:04:01,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:04:01,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:04:01,370 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:04:01,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:01" (1/1) ... [2018-11-18 16:04:01,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:01" (1/1) ... [2018-11-18 16:04:01,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:01" (1/1) ... [2018-11-18 16:04:01,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:01" (1/1) ... [2018-11-18 16:04:01,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:01" (1/1) ... [2018-11-18 16:04:01,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:01" (1/1) ... [2018-11-18 16:04:01,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:01" (1/1) ... [2018-11-18 16:04:01,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:04:01,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:04:01,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:04:01,384 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:04:01,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:04:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:04:01,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:04:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:04:01,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:04:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:04:01,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:04:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 16:04:01,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 16:04:01,598 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:04:01,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:04:01 BoogieIcfgContainer [2018-11-18 16:04:01,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:04:01,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:04:01,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:04:01,600 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:04:01,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:04:01" (1/3) ... [2018-11-18 16:04:01,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32bda69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:04:01, skipping insertion in model container [2018-11-18 16:04:01,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:01" (2/3) ... [2018-11-18 16:04:01,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32bda69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:04:01, skipping insertion in model container [2018-11-18 16:04:01,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:04:01" (3/3) ... [2018-11-18 16:04:01,603 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square_false-unreach-call_true-termination.c [2018-11-18 16:04:01,609 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:04:01,613 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:04:01,624 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:04:01,647 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:04:01,647 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:04:01,647 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:04:01,647 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:04:01,648 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:04:01,648 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:04:01,648 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:04:01,648 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:04:01,663 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-18 16:04:01,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 16:04:01,669 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:04:01,669 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:04:01,672 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:04:01,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:04:01,677 INFO L82 PathProgramCache]: Analyzing trace with hash 997393992, now seen corresponding path program 1 times [2018-11-18 16:04:01,678 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:04:01,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:04:01,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:04:01,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:04:01,708 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:04:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:04:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:04:01,753 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 16:04:01,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:04:01 BoogieIcfgContainer [2018-11-18 16:04:01,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:04:01,770 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:04:01,770 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:04:01,770 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:04:01,771 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:04:01" (3/4) ... [2018-11-18 16:04:01,773 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 16:04:01,773 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:04:01,774 INFO L168 Benchmark]: Toolchain (without parser) took 589.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 962.9 MB in the beginning and 1.1 GB in the end (delta: -172.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:04:01,775 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 982.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:04:01,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.59 ms. Allocated memory is still 1.0 GB. Free memory was 962.9 MB in the beginning and 951.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-18 16:04:01,776 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.75 ms. Allocated memory is still 1.0 GB. Free memory is still 951.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:04:01,778 INFO L168 Benchmark]: Boogie Preprocessor took 13.94 ms. Allocated memory is still 1.0 GB. Free memory was 951.1 MB in the beginning and 945.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:04:01,779 INFO L168 Benchmark]: RCFGBuilder took 213.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -203.1 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 16:04:01,779 INFO L168 Benchmark]: TraceAbstraction took 171.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:04:01,780 INFO L168 Benchmark]: Witness Printer took 3.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:04:01,783 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 982.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 168.59 ms. Allocated memory is still 1.0 GB. Free memory was 962.9 MB in the beginning and 951.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.75 ms. Allocated memory is still 1.0 GB. Free memory is still 951.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.94 ms. Allocated memory is still 1.0 GB. Free memory was 951.1 MB in the beginning and 945.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 213.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -203.1 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 171.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Witness Printer took 3.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 16. Possible FailurePath: [L10] int x; [L11] float y, z; [L13] x = __VERIFIER_nondet_int() [L16] y = x*x - 4.f VAL [x=0] [L17] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 0.1.23-5842f4b [2018-11-18 16:04:03,445 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:04:03,448 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:04:03,466 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:04:03,467 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:04:03,467 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:04:03,468 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:04:03,470 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:04:03,472 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:04:03,472 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:04:03,473 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:04:03,473 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:04:03,474 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:04:03,475 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:04:03,476 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:04:03,477 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:04:03,477 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:04:03,478 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:04:03,480 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:04:03,481 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:04:03,482 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:04:03,484 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:04:03,485 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:04:03,486 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:04:03,486 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:04:03,487 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:04:03,488 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:04:03,488 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:04:03,489 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:04:03,490 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:04:03,490 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:04:03,490 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:04:03,491 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:04:03,491 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:04:03,499 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:04:03,500 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:04:03,500 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 16:04:03,511 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:04:03,511 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:04:03,512 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:04:03,512 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:04:03,512 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:04:03,512 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:04:03,512 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:04:03,513 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:04:03,513 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:04:03,513 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:04:03,513 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:04:03,513 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:04:03,514 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:04:03,514 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:04:03,514 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:04:03,514 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:04:03,514 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:04:03,514 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 16:04:03,514 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 16:04:03,514 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:04:03,519 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:04:03,519 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:04:03,519 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:04:03,519 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:04:03,519 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:04:03,520 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:04:03,520 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:04:03,520 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:04:03,520 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:04:03,520 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:04:03,520 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:04:03,520 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 16:04:03,520 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:04:03,521 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 16:04:03,521 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 16:04:03,521 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_19ac6374-3b00-4bea-98d3-a86b57969dd7/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 -> 3a552ed0b53624bc27612451ed4207d0101db39b [2018-11-18 16:04:03,576 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:04:03,587 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:04:03,590 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:04:03,592 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:04:03,592 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:04:03,593 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-11-18 16:04:03,641 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/data/95879478f/5870ec8303b445b5808412724910b85a/FLAG66209fbb3 [2018-11-18 16:04:03,988 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:04:03,989 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-11-18 16:04:03,992 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/data/95879478f/5870ec8303b445b5808412724910b85a/FLAG66209fbb3 [2018-11-18 16:04:04,001 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/data/95879478f/5870ec8303b445b5808412724910b85a [2018-11-18 16:04:04,003 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:04:04,004 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:04:04,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:04:04,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:04:04,008 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:04:04,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:04:04" (1/1) ... [2018-11-18 16:04:04,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd27665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:04, skipping insertion in model container [2018-11-18 16:04:04,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:04:04" (1/1) ... [2018-11-18 16:04:04,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:04:04,031 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:04:04,158 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:04:04,162 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:04:04,176 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:04:04,187 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:04:04,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:04 WrapperNode [2018-11-18 16:04:04,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:04:04,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:04:04,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:04:04,188 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:04:04,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:04" (1/1) ... [2018-11-18 16:04:04,199 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:04" (1/1) ... [2018-11-18 16:04:04,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:04:04,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:04:04,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:04:04,204 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:04:04,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:04" (1/1) ... [2018-11-18 16:04:04,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:04" (1/1) ... [2018-11-18 16:04:04,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:04" (1/1) ... [2018-11-18 16:04:04,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:04" (1/1) ... [2018-11-18 16:04:04,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:04" (1/1) ... [2018-11-18 16:04:04,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:04" (1/1) ... [2018-11-18 16:04:04,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:04" (1/1) ... [2018-11-18 16:04:04,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:04:04,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:04:04,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:04:04,221 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:04:04,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:04:04,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:04:04,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:04:04,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:04:04,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:04:04,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:04:04,329 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:04:04,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 16:04:04,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 16:04:04,989 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:04:04,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:04:04 BoogieIcfgContainer [2018-11-18 16:04:04,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:04:04,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:04:04,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:04:04,992 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:04:04,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:04:04" (1/3) ... [2018-11-18 16:04:04,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf44399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:04:04, skipping insertion in model container [2018-11-18 16:04:04,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:04:04" (2/3) ... [2018-11-18 16:04:04,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf44399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:04:04, skipping insertion in model container [2018-11-18 16:04:04,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:04:04" (3/3) ... [2018-11-18 16:04:04,995 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square_false-unreach-call_true-termination.c [2018-11-18 16:04:05,002 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:04:05,009 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:04:05,023 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:04:05,042 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 16:04:05,042 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:04:05,042 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:04:05,042 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:04:05,042 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:04:05,042 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:04:05,043 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:04:05,043 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:04:05,043 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:04:05,057 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-18 16:04:05,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 16:04:05,062 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:04:05,062 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:04:05,064 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:04:05,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:04:05,068 INFO L82 PathProgramCache]: Analyzing trace with hash 997393992, now seen corresponding path program 1 times [2018-11-18 16:04:05,070 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 16:04:05,071 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-18 16:04:05,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:04:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:04:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:04:05,219 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 16:04:05,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:04:05 BoogieIcfgContainer [2018-11-18 16:04:05,242 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:04:05,242 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:04:05,242 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:04:05,242 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:04:05,243 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:04:04" (3/4) ... [2018-11-18 16:04:05,245 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 16:04:05,279 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_19ac6374-3b00-4bea-98d3-a86b57969dd7/bin-2019/utaipan/witness.graphml [2018-11-18 16:04:05,279 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:04:05,280 INFO L168 Benchmark]: Toolchain (without parser) took 1275.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -142.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:04:05,281 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:04:05,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.01 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:04:05,282 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.39 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:04:05,283 INFO L168 Benchmark]: Boogie Preprocessor took 16.89 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. [2018-11-18 16:04:05,283 INFO L168 Benchmark]: RCFGBuilder took 769.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -176.9 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. [2018-11-18 16:04:05,284 INFO L168 Benchmark]: TraceAbstraction took 251.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 11.5 GB. [2018-11-18 16:04:05,285 INFO L168 Benchmark]: Witness Printer took 36.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:04:05,289 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 183.01 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 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 15.39 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.89 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 769.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -176.9 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 251.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 11.5 GB. * Witness Printer took 36.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int x; [L11] float y, z; [L13] x = __VERIFIER_nondet_int() [L16] y = x*x - 4.f VAL [x=2, y=0.0] [L17] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...