./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/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: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/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 0.1.24-cad4683 [2019-10-22 11:25:58,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:58,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:58,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:58,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:58,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:58,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:58,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:58,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:58,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:58,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:58,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:58,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:58,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:58,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:58,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:58,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:58,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:58,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:58,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:58,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:58,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:58,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:58,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:58,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:58,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:58,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:58,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:58,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:58,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:58,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:58,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:58,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:58,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:58,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:58,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:58,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:58,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:58,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:58,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:58,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:58,957 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:25:58,968 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:58,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:58,979 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:58,979 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:58,979 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:58,980 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:58,980 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:25:58,980 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:58,980 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:58,980 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:25:58,980 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:25:58,980 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:58,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:58,981 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:58,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:25:58,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:58,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:58,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:58,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:58,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:58,982 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:58,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:58,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:58,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:58,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:58,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:58,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:58,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:58,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:58,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:58,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:58,984 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:25:58,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:25:58,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:58,985 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:58,985 INFO L138 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_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/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 [2019-10-22 11:25:59,016 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:59,027 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:59,030 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:59,032 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:59,032 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:59,033 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/utaipan/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-10-22 11:25:59,083 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/utaipan/data/dfd23b0d0/47b89b736f364185881efa4208848c39/FLAG8a3672fe9 [2019-10-22 11:25:59,486 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:59,486 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-10-22 11:25:59,492 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/utaipan/data/dfd23b0d0/47b89b736f364185881efa4208848c39/FLAG8a3672fe9 [2019-10-22 11:25:59,507 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/utaipan/data/dfd23b0d0/47b89b736f364185881efa4208848c39 [2019-10-22 11:25:59,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:59,511 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:59,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:59,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:59,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:59,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:59" (1/1) ... [2019-10-22 11:25:59,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d01eb1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:59, skipping insertion in model container [2019-10-22 11:25:59,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:59" (1/1) ... [2019-10-22 11:25:59,530 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:59,546 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:59,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:59,711 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:59,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:59,797 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:59,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:59 WrapperNode [2019-10-22 11:25:59,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:59,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:59,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:59,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:59,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:59" (1/1) ... [2019-10-22 11:25:59,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:59" (1/1) ... [2019-10-22 11:25:59,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:59,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:59,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:59,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:59,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:59" (1/1) ... [2019-10-22 11:25:59,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:59" (1/1) ... [2019-10-22 11:25:59,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:59" (1/1) ... [2019-10-22 11:25:59,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:59" (1/1) ... [2019-10-22 11:25:59,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:59" (1/1) ... [2019-10-22 11:25:59,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:59" (1/1) ... [2019-10-22 11:25:59,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:59" (1/1) ... [2019-10-22 11:25:59,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:59,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:59,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:59,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:59,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/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 [2019-10-22 11:25:59,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:59,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:00,039 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:00,041 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 11:26:00,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:00 BoogieIcfgContainer [2019-10-22 11:26:00,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:00,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:00,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:00,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:00,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:59" (1/3) ... [2019-10-22 11:26:00,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7e048f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:00, skipping insertion in model container [2019-10-22 11:26:00,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:59" (2/3) ... [2019-10-22 11:26:00,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7e048f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:00, skipping insertion in model container [2019-10-22 11:26:00,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:00" (3/3) ... [2019-10-22 11:26:00,050 INFO L109 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2019-10-22 11:26:00,059 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:00,066 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:26:00,076 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:26:00,097 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:00,097 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:00,097 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:00,098 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:00,098 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:00,098 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:00,098 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:00,098 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:00,110 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-10-22 11:26:00,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-10-22 11:26:00,116 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:00,117 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-10-22 11:26:00,118 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:00,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:00,124 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2019-10-22 11:26:00,132 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:00,132 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360455270] [2019-10-22 11:26:00,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:00,133 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:00,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:00,256 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:26:00,257 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:26:00,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:26:00 BoogieIcfgContainer [2019-10-22 11:26:00,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:26:00,274 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:26:00,274 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:26:00,275 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:26:00,275 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:00" (3/4) ... [2019-10-22 11:26:00,278 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 11:26:00,279 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:26:00,282 INFO L168 Benchmark]: Toolchain (without parser) took 769.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 947.7 MB in the beginning and 1.1 GB in the end (delta: -174.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:00,283 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:00,284 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 947.7 MB in the beginning and 1.2 GB in the end (delta: -203.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:00,284 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:00,285 INFO L168 Benchmark]: Boogie Preprocessor took 18.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:00,285 INFO L168 Benchmark]: RCFGBuilder took 193.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:00,286 INFO L168 Benchmark]: TraceAbstraction took 230.78 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:00,286 INFO L168 Benchmark]: Witness Printer took 4.39 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. [2019-10-22 11:26:00,295 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 286.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 947.7 MB in the beginning and 1.2 GB in the end (delta: -203.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 193.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 230.78 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Witness Printer took 4.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: 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 16. Possible FailurePath: [L10] int x; [L11] float y, z; [L13] x = __VERIFIER_nondet_int() [L16] y = x*x - 4.f [L6] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: 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 0.1.24-cad4683 [2019-10-22 11:26:02,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:02,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:02,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:02,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:02,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:02,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:02,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:02,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:02,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:02,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:02,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:02,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:02,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:02,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:02,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:02,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:02,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:02,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:02,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:02,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:02,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:02,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:02,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:02,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:02,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:02,233 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:02,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:02,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:02,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:02,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:02,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:02,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:02,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:02,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:02,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:02,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:02,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:02,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:02,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:02,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:02,242 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:26:02,255 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:02,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:02,256 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:02,256 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:02,257 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:02,257 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:02,257 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:02,257 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:02,257 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:02,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:02,258 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:02,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:02,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:02,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:02,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:02,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:02,259 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:26:02,259 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:26:02,259 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:02,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:02,259 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:26:02,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:02,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:02,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:02,260 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:02,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:02,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:02,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:02,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:02,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:02,261 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:26:02,261 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:26:02,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:02,261 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:02,262 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/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 [2019-10-22 11:26:02,288 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:02,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:02,304 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:02,306 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:02,306 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:02,307 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/utaipan/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-10-22 11:26:02,360 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/utaipan/data/b2df2ef8a/b41fc08e9de24dc0ae2811da7bfd3d99/FLAGe5cb29734 [2019-10-22 11:26:02,751 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:02,753 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-10-22 11:26:02,758 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/utaipan/data/b2df2ef8a/b41fc08e9de24dc0ae2811da7bfd3d99/FLAGe5cb29734 [2019-10-22 11:26:02,775 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/utaipan/data/b2df2ef8a/b41fc08e9de24dc0ae2811da7bfd3d99 [2019-10-22 11:26:02,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:02,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:02,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:02,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:02,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:02,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:02" (1/1) ... [2019-10-22 11:26:02,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9d5124e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:02, skipping insertion in model container [2019-10-22 11:26:02,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:02" (1/1) ... [2019-10-22 11:26:02,803 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:02,818 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:02,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:02,989 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:03,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:03,020 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:03,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:03 WrapperNode [2019-10-22 11:26:03,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:03,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:03,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:03,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:03,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:03" (1/1) ... [2019-10-22 11:26:03,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:03" (1/1) ... [2019-10-22 11:26:03,123 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:03,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:03,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:03,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:03,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:03" (1/1) ... [2019-10-22 11:26:03,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:03" (1/1) ... [2019-10-22 11:26:03,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:03" (1/1) ... [2019-10-22 11:26:03,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:03" (1/1) ... [2019-10-22 11:26:03,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:03" (1/1) ... [2019-10-22 11:26:03,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:03" (1/1) ... [2019-10-22 11:26:03,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:03" (1/1) ... [2019-10-22 11:26:03,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:03,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:03,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:03,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:03,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/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 [2019-10-22 11:26:03,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:03,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:04,486 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:04,486 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 11:26:04,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:04 BoogieIcfgContainer [2019-10-22 11:26:04,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:04,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:04,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:04,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:04,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:02" (1/3) ... [2019-10-22 11:26:04,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329cb305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:04, skipping insertion in model container [2019-10-22 11:26:04,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:03" (2/3) ... [2019-10-22 11:26:04,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329cb305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:04, skipping insertion in model container [2019-10-22 11:26:04,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:04" (3/3) ... [2019-10-22 11:26:04,495 INFO L109 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2019-10-22 11:26:04,504 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:04,511 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:26:04,522 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:26:04,548 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:04,548 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:04,548 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:04,548 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:04,549 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:04,549 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:04,549 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:04,549 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:04,564 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-10-22 11:26:04,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-10-22 11:26:04,571 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:04,572 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-10-22 11:26:04,574 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:04,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:04,580 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2019-10-22 11:26:04,589 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:04,589 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802947900] [2019-10-22 11:26:04,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/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 [2019-10-22 11:26:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:04,807 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:26:04,808 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:26:05,008 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-10-22 11:26:05,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:26:05 BoogieIcfgContainer [2019-10-22 11:26:05,031 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:26:05,032 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:26:05,032 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:26:05,032 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:26:05,033 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:04" (3/4) ... [2019-10-22 11:26:05,035 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:26:05,076 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c37d73b6-7f58-44fc-b3a0-1599d1630cdd/bin/utaipan/witness.graphml [2019-10-22 11:26:05,076 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:26:05,078 INFO L168 Benchmark]: Toolchain (without parser) took 2298.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -150.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:05,079 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:05,079 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.82 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:05,080 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -204.0 MB). Peak memory consumption was 12.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:05,081 INFO L168 Benchmark]: Boogie Preprocessor took 27.80 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:05,081 INFO L168 Benchmark]: RCFGBuilder took 1335.98 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: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:05,084 INFO L168 Benchmark]: TraceAbstraction took 543.15 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: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:05,084 INFO L168 Benchmark]: Witness Printer took 44.60 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. [2019-10-22 11:26:05,087 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 239.82 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.2 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 101.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -204.0 MB). Peak memory consumption was 12.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.80 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1335.98 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: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 543.15 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: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Witness Printer took 44.60 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 [L6] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...