./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/inv_square_false-unreach-call_true-termination.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_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/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 5cdc4d12f446be57385f35c672efbdd6980b00fa ................................................................................................................................................................................................................................................... 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_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/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 5cdc4d12f446be57385f35c672efbdd6980b00fa ........................................................................................................................................................................................................................................... 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 0.1.23-1dbac8b [2018-11-10 05:13:19,978 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 05:13:19,979 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 05:13:19,987 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 05:13:19,987 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 05:13:19,987 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 05:13:19,988 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 05:13:19,989 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 05:13:19,990 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 05:13:19,991 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 05:13:19,991 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 05:13:19,991 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 05:13:19,993 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 05:13:19,993 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 05:13:19,994 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 05:13:19,994 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 05:13:19,995 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 05:13:19,997 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 05:13:19,998 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 05:13:19,999 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 05:13:19,999 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 05:13:20,001 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 05:13:20,002 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 05:13:20,002 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 05:13:20,002 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 05:13:20,003 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 05:13:20,003 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 05:13:20,004 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 05:13:20,005 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 05:13:20,006 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 05:13:20,006 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 05:13:20,006 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 05:13:20,007 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 05:13:20,007 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 05:13:20,007 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 05:13:20,008 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 05:13:20,008 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 05:13:20,018 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 05:13:20,018 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 05:13:20,019 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 05:13:20,019 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 05:13:20,019 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 05:13:20,019 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 05:13:20,019 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 05:13:20,019 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 05:13:20,019 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 05:13:20,020 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 05:13:20,020 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 05:13:20,020 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 05:13:20,020 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 05:13:20,020 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 05:13:20,021 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 05:13:20,021 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 05:13:20,021 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 05:13:20,021 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 05:13:20,021 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 05:13:20,021 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 05:13:20,021 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 05:13:20,021 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 05:13:20,022 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 05:13:20,022 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 05:13:20,022 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 05:13:20,022 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 05:13:20,022 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 05:13:20,022 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 05:13:20,022 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 05:13:20,023 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 05:13:20,023 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 05:13:20,023 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 05:13:20,023 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 05:13:20,023 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 05:13:20,023 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_cbdc2adc-6dae-4226-825d-c2bc634d22f4/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 -> 5cdc4d12f446be57385f35c672efbdd6980b00fa [2018-11-10 05:13:20,045 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 05:13:20,056 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 05:13:20,058 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 05:13:20,059 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 05:13:20,059 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 05:13:20,060 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/inv_square_false-unreach-call_true-termination.c [2018-11-10 05:13:20,094 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/data/9ef3dcd9d/38c8e46b08dc450490768978cbb64a8c/FLAG9586bcdd6 [2018-11-10 05:13:20,503 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 05:13:20,504 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/sv-benchmarks/c/float-benchs/inv_square_false-unreach-call_true-termination.c [2018-11-10 05:13:20,508 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/data/9ef3dcd9d/38c8e46b08dc450490768978cbb64a8c/FLAG9586bcdd6 [2018-11-10 05:13:20,517 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/data/9ef3dcd9d/38c8e46b08dc450490768978cbb64a8c [2018-11-10 05:13:20,520 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 05:13:20,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 05:13:20,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 05:13:20,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 05:13:20,526 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 05:13:20,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:13:20" (1/1) ... [2018-11-10 05:13:20,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79e7f328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:20, skipping insertion in model container [2018-11-10 05:13:20,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:13:20" (1/1) ... [2018-11-10 05:13:20,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 05:13:20,554 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 05:13:20,690 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:13:20,693 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 05:13:20,707 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:13:20,720 INFO L193 MainTranslator]: Completed translation [2018-11-10 05:13:20,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:20 WrapperNode [2018-11-10 05:13:20,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 05:13:20,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 05:13:20,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 05:13:20,721 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 05:13:20,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:20" (1/1) ... [2018-11-10 05:13:20,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:20" (1/1) ... [2018-11-10 05:13:20,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 05:13:20,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 05:13:20,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 05:13:20,737 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 05:13:20,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:20" (1/1) ... [2018-11-10 05:13:20,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:20" (1/1) ... [2018-11-10 05:13:20,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:20" (1/1) ... [2018-11-10 05:13:20,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:20" (1/1) ... [2018-11-10 05:13:20,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:20" (1/1) ... [2018-11-10 05:13:20,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:20" (1/1) ... [2018-11-10 05:13:20,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:20" (1/1) ... [2018-11-10 05:13:20,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 05:13:20,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 05:13:20,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 05:13:20,748 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 05:13:20,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 05:13:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 05:13:20,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 05:13:20,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 05:13:20,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 05:13:20,837 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 05:13:20,837 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 05:13:20,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 05:13:20,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 05:13:20,929 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 05:13:20,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:13:20 BoogieIcfgContainer [2018-11-10 05:13:20,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 05:13:20,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 05:13:20,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 05:13:20,932 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 05:13:20,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:13:20" (1/3) ... [2018-11-10 05:13:20,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7647d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:13:20, skipping insertion in model container [2018-11-10 05:13:20,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:20" (2/3) ... [2018-11-10 05:13:20,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7647d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:13:20, skipping insertion in model container [2018-11-10 05:13:20,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:13:20" (3/3) ... [2018-11-10 05:13:20,934 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_square_false-unreach-call_true-termination.c [2018-11-10 05:13:20,940 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 05:13:20,944 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 05:13:20,953 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 05:13:20,972 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 05:13:20,972 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 05:13:20,973 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 05:13:20,973 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 05:13:20,973 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 05:13:20,973 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 05:13:20,973 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 05:13:20,973 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 05:13:20,983 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-10 05:13:20,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 05:13:20,986 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:13:20,986 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:13:20,988 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:13:20,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:13:20,991 INFO L82 PathProgramCache]: Analyzing trace with hash 697060158, now seen corresponding path program 1 times [2018-11-10 05:13:20,993 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 05:13:21,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:13:21,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:13:21,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:13:21,029 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 05:13:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:13:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:13:21,064 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 05:13:21,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 05:13:21 BoogieIcfgContainer [2018-11-10 05:13:21,078 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 05:13:21,078 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 05:13:21,078 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 05:13:21,078 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 05:13:21,079 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:13:20" (3/4) ... [2018-11-10 05:13:21,082 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 05:13:21,082 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 05:13:21,083 INFO L168 Benchmark]: Toolchain (without parser) took 561.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 201.9 MB). Free memory was 954.9 MB in the beginning and 1.2 GB in the end (delta: -221.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:13:21,084 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:13:21,085 INFO L168 Benchmark]: CACSL2BoogieTranslator took 198.36 ms. Allocated memory is still 1.0 GB. Free memory was 954.9 MB in the beginning and 944.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:13:21,085 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.58 ms. Allocated memory is still 1.0 GB. Free memory is still 944.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:13:21,086 INFO L168 Benchmark]: Boogie Preprocessor took 11.10 ms. Allocated memory is still 1.0 GB. Free memory was 944.1 MB in the beginning and 941.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:13:21,087 INFO L168 Benchmark]: RCFGBuilder took 182.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 201.9 MB). Free memory was 941.4 MB in the beginning and 1.2 GB in the end (delta: -250.9 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2018-11-10 05:13:21,087 INFO L168 Benchmark]: TraceAbstraction took 147.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. [2018-11-10 05:13:21,088 INFO L168 Benchmark]: Witness Printer took 4.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2018-11-10 05:13:21,091 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 198.36 ms. Allocated memory is still 1.0 GB. Free memory was 954.9 MB in the beginning and 944.1 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 15.58 ms. Allocated memory is still 1.0 GB. Free memory is still 944.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.10 ms. Allocated memory is still 1.0 GB. Free memory was 944.1 MB in the beginning and 941.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 182.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 201.9 MB). Free memory was 941.4 MB in the beginning and 1.2 GB in the end (delta: -250.9 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 147.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 18. Possible FailurePath: [L12] float x, y, z; [L14] x = __VERIFIER_nondet_float() [L17] COND TRUE x != 0.f [L18] y = x * x VAL [x=2] [L19] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 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=19occurred 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, 10 NumberOfCodeBlocks, 10 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 0.1.23-1dbac8b [2018-11-10 05:13:22,577 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 05:13:22,579 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 05:13:22,588 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 05:13:22,588 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 05:13:22,589 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 05:13:22,590 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 05:13:22,591 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 05:13:22,592 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 05:13:22,593 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 05:13:22,593 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 05:13:22,594 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 05:13:22,594 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 05:13:22,595 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 05:13:22,596 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 05:13:22,596 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 05:13:22,597 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 05:13:22,598 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 05:13:22,600 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 05:13:22,601 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 05:13:22,602 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 05:13:22,603 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 05:13:22,604 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 05:13:22,605 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 05:13:22,605 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 05:13:22,606 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 05:13:22,606 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 05:13:22,607 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 05:13:22,607 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 05:13:22,608 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 05:13:22,608 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 05:13:22,609 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 05:13:22,609 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 05:13:22,609 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 05:13:22,610 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 05:13:22,610 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 05:13:22,610 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-10 05:13:22,621 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 05:13:22,621 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 05:13:22,622 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 05:13:22,622 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 05:13:22,622 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 05:13:22,622 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 05:13:22,622 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 05:13:22,622 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 05:13:22,623 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 05:13:22,623 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 05:13:22,623 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 05:13:22,623 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 05:13:22,623 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 05:13:22,623 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 05:13:22,624 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 05:13:22,624 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 05:13:22,624 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 05:13:22,624 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 05:13:22,624 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 05:13:22,624 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 05:13:22,624 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 05:13:22,625 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 05:13:22,625 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 05:13:22,625 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 05:13:22,625 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 05:13:22,625 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 05:13:22,625 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 05:13:22,625 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 05:13:22,626 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-10 05:13:22,626 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 05:13:22,626 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 05:13:22,626 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 05:13:22,626 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_cbdc2adc-6dae-4226-825d-c2bc634d22f4/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 -> 5cdc4d12f446be57385f35c672efbdd6980b00fa [2018-11-10 05:13:22,655 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 05:13:22,664 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 05:13:22,666 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 05:13:22,667 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 05:13:22,668 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 05:13:22,668 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/inv_square_false-unreach-call_true-termination.c [2018-11-10 05:13:22,706 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/data/aab7d4d37/5cd95fee1a44433294cf272b492e4e6b/FLAG225bf8f0b [2018-11-10 05:13:23,026 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 05:13:23,026 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/sv-benchmarks/c/float-benchs/inv_square_false-unreach-call_true-termination.c [2018-11-10 05:13:23,030 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/data/aab7d4d37/5cd95fee1a44433294cf272b492e4e6b/FLAG225bf8f0b [2018-11-10 05:13:23,038 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/data/aab7d4d37/5cd95fee1a44433294cf272b492e4e6b [2018-11-10 05:13:23,040 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 05:13:23,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 05:13:23,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 05:13:23,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 05:13:23,045 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 05:13:23,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:13:23" (1/1) ... [2018-11-10 05:13:23,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5af075f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:23, skipping insertion in model container [2018-11-10 05:13:23,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:13:23" (1/1) ... [2018-11-10 05:13:23,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 05:13:23,067 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 05:13:23,179 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:13:23,183 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 05:13:23,196 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:13:23,205 INFO L193 MainTranslator]: Completed translation [2018-11-10 05:13:23,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:23 WrapperNode [2018-11-10 05:13:23,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 05:13:23,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 05:13:23,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 05:13:23,206 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 05:13:23,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:23" (1/1) ... [2018-11-10 05:13:23,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:23" (1/1) ... [2018-11-10 05:13:23,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 05:13:23,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 05:13:23,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 05:13:23,221 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 05:13:23,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:23" (1/1) ... [2018-11-10 05:13:23,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:23" (1/1) ... [2018-11-10 05:13:23,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:23" (1/1) ... [2018-11-10 05:13:23,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:23" (1/1) ... [2018-11-10 05:13:23,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:23" (1/1) ... [2018-11-10 05:13:23,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:23" (1/1) ... [2018-11-10 05:13:23,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:23" (1/1) ... [2018-11-10 05:13:23,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 05:13:23,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 05:13:23,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 05:13:23,235 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 05:13:23,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 05:13:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 05:13:23,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 05:13:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 05:13:23,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 05:13:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 05:13:23,285 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 05:13:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 05:13:23,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 05:13:23,977 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 05:13:23,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:13:23 BoogieIcfgContainer [2018-11-10 05:13:23,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 05:13:23,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 05:13:23,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 05:13:23,980 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 05:13:23,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:13:23" (1/3) ... [2018-11-10 05:13:23,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd436fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:13:23, skipping insertion in model container [2018-11-10 05:13:23,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:13:23" (2/3) ... [2018-11-10 05:13:23,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd436fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:13:23, skipping insertion in model container [2018-11-10 05:13:23,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:13:23" (3/3) ... [2018-11-10 05:13:23,983 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_square_false-unreach-call_true-termination.c [2018-11-10 05:13:23,990 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 05:13:23,994 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 05:13:24,003 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 05:13:24,020 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 05:13:24,021 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 05:13:24,021 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 05:13:24,021 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 05:13:24,021 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 05:13:24,021 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 05:13:24,021 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 05:13:24,021 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 05:13:24,021 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 05:13:24,035 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-10 05:13:24,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 05:13:24,039 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:13:24,040 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:13:24,041 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:13:24,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:13:24,044 INFO L82 PathProgramCache]: Analyzing trace with hash 697060158, now seen corresponding path program 1 times [2018-11-10 05:13:24,047 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 05:13:24,047 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-10 05:13:24,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:13:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:13:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:13:24,190 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 05:13:24,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 05:13:24 BoogieIcfgContainer [2018-11-10 05:13:24,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 05:13:24,206 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 05:13:24,206 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 05:13:24,206 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 05:13:24,206 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:13:23" (3/4) ... [2018-11-10 05:13:24,208 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 05:13:24,235 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_cbdc2adc-6dae-4226-825d-c2bc634d22f4/bin-2019/utaipan/witness.graphml [2018-11-10 05:13:24,235 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 05:13:24,236 INFO L168 Benchmark]: Toolchain (without parser) took 1195.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -135.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:13:24,237 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:13:24,237 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.04 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. [2018-11-10 05:13:24,238 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.53 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:13:24,238 INFO L168 Benchmark]: Boogie Preprocessor took 13.66 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. [2018-11-10 05:13:24,239 INFO L168 Benchmark]: RCFGBuilder took 742.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -172.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. [2018-11-10 05:13:24,239 INFO L168 Benchmark]: TraceAbstraction took 227.32 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: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2018-11-10 05:13:24,239 INFO L168 Benchmark]: Witness Printer took 30.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:13:24,242 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 164.04 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 14.53 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.66 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. * RCFGBuilder took 742.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -172.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 227.32 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: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Witness Printer took 30.02 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: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] float x, y, z; [L14] x = __VERIFIER_nondet_float() [L17] COND TRUE x != 0.f [L18] y = x * x VAL [x=0.000000000000000000000000000000000000000000001401298464324817, y=0.0] [L19] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 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=19occurred 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, 10 NumberOfCodeBlocks, 10 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...