./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 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --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/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --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 0.1.24-30f4e4a [2019-11-27 23:36:01,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:36:01,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:36:01,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:36:01,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:36:01,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:36:01,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:36:01,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:36:01,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:36:01,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:36:01,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:36:01,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:36:01,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:36:01,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:36:01,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:36:01,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:36:01,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:36:01,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:36:01,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:36:01,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:36:01,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:36:01,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:36:01,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:36:01,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:36:01,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:36:01,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:36:01,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:36:01,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:36:01,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:36:01,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:36:01,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:36:01,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:36:01,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:36:01,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:36:01,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:36:01,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:36:01,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:36:01,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:36:01,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:36:01,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:36:01,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:36:01,964 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:36:01,979 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:36:01,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:36:01,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:36:01,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:36:01,981 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:36:01,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:36:01,982 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:36:01,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:36:01,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:36:01,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:36:01,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:36:01,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:36:01,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:36:01,985 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:36:01,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:36:01,986 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:36:01,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:36:01,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:36:01,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:36:01,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:36:01,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:36:01,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:36:01,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:36:01,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:36:01,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:36:01,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:36:01,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:36:01,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:36:01,990 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> Automizer 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 [2019-11-27 23:36:02,297 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:36:02,312 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:36:02,315 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:36:02,317 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:36:02,317 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:36:02,318 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-11-27 23:36:02,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b62ab5d4/e0e0442de7a846bba4f06a24aa77ca05/FLAG8c93c6f67 [2019-11-27 23:36:02,847 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:36:02,848 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-11-27 23:36:02,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b62ab5d4/e0e0442de7a846bba4f06a24aa77ca05/FLAG8c93c6f67 [2019-11-27 23:36:03,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b62ab5d4/e0e0442de7a846bba4f06a24aa77ca05 [2019-11-27 23:36:03,262 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:36:03,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:36:03,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:36:03,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:36:03,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:36:03,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:36:03" (1/1) ... [2019-11-27 23:36:03,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388be10d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:03, skipping insertion in model container [2019-11-27 23:36:03,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:36:03" (1/1) ... [2019-11-27 23:36:03,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:36:03,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:36:03,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:36:03,504 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:36:03,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:36:03,542 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:36:03,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:03 WrapperNode [2019-11-27 23:36:03,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:36:03,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:36:03,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:36:03,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:36:03,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:03" (1/1) ... [2019-11-27 23:36:03,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:03" (1/1) ... [2019-11-27 23:36:03,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:36:03,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:36:03,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:36:03,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:36:03,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:03" (1/1) ... [2019-11-27 23:36:03,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:03" (1/1) ... [2019-11-27 23:36:03,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:03" (1/1) ... [2019-11-27 23:36:03,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:03" (1/1) ... [2019-11-27 23:36:03,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:03" (1/1) ... [2019-11-27 23:36:03,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:03" (1/1) ... [2019-11-27 23:36:03,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:03" (1/1) ... [2019-11-27 23:36:03,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:36:03,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:36:03,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:36:03,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:36:03,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-27 23:36:03,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:36:03,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:36:03,881 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:36:03,882 INFO L297 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-27 23:36:03,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:36:03 BoogieIcfgContainer [2019-11-27 23:36:03,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:36:03,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:36:03,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:36:03,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:36:03,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:36:03" (1/3) ... [2019-11-27 23:36:03,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6d8622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:36:03, skipping insertion in model container [2019-11-27 23:36:03,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:03" (2/3) ... [2019-11-27 23:36:03,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6d8622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:36:03, skipping insertion in model container [2019-11-27 23:36:03,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:36:03" (3/3) ... [2019-11-27 23:36:03,891 INFO L109 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2019-11-27 23:36:03,899 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:36:03,904 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:36:03,916 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:36:03,949 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:36:03,949 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:36:03,949 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:36:03,950 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:36:03,950 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:36:03,950 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:36:03,950 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:36:03,951 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:36:03,963 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-27 23:36:03,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-27 23:36:03,968 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:36:03,969 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-27 23:36:03,969 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:36:03,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:36:03,975 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2019-11-27 23:36:03,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:36:03,984 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101393800] [2019-11-27 23:36:03,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:36:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:36:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:36:04,098 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:36:04,099 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:36:04,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:36:04 BoogieIcfgContainer [2019-11-27 23:36:04,118 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:36:04,118 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:36:04,118 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:36:04,118 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:36:04,119 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:36:03" (3/4) ... [2019-11-27 23:36:04,123 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-27 23:36:04,123 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:36:04,127 INFO L168 Benchmark]: Toolchain (without parser) took 861.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -115.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:36:04,127 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:36:04,128 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.29 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. [2019-11-27 23:36:04,130 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -158.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:36:04,131 INFO L168 Benchmark]: Boogie Preprocessor took 16.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:36:04,131 INFO L168 Benchmark]: RCFGBuilder took 227.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 11.5 GB. [2019-11-27 23:36:04,132 INFO L168 Benchmark]: TraceAbstraction took 233.36 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:36:04,133 INFO L168 Benchmark]: Witness Printer took 5.49 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:36:04,138 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 278.29 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 93.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -158.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 227.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 233.36 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * Witness Printer took 5.49 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.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 0.1.24-30f4e4a [2019-11-27 23:36:06,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:36:06,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:36:06,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:36:06,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:36:06,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:36:06,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:36:06,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:36:06,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:36:06,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:36:06,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:36:06,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:36:06,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:36:06,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:36:06,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:36:06,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:36:06,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:36:06,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:36:06,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:36:06,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:36:06,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:36:06,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:36:06,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:36:06,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:36:06,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:36:06,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:36:06,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:36:06,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:36:06,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:36:06,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:36:06,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:36:06,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:36:06,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:36:06,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:36:06,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:36:06,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:36:06,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:36:06,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:36:06,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:36:06,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:36:06,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:36:06,220 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 23:36:06,235 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:36:06,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:36:06,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:36:06,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:36:06,237 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:36:06,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:36:06,238 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:36:06,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:36:06,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:36:06,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:36:06,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:36:06,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:36:06,239 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 23:36:06,240 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 23:36:06,240 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:36:06,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:36:06,240 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:36:06,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:36:06,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:36:06,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:36:06,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:36:06,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:36:06,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:36:06,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:36:06,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:36:06,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:36:06,243 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 23:36:06,244 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 23:36:06,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:36:06,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 23:36:06,245 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> Automizer 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 [2019-11-27 23:36:06,551 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:36:06,573 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:36:06,579 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:36:06,582 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:36:06,583 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:36:06,584 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-11-27 23:36:06,648 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b06cfb69d/44a6fbf618e8487fbe561b8ec6d0c629/FLAG410ed72df [2019-11-27 23:36:07,099 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:36:07,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-11-27 23:36:07,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b06cfb69d/44a6fbf618e8487fbe561b8ec6d0c629/FLAG410ed72df [2019-11-27 23:36:07,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b06cfb69d/44a6fbf618e8487fbe561b8ec6d0c629 [2019-11-27 23:36:07,466 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:36:07,468 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:36:07,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:36:07,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:36:07,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:36:07,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:36:07" (1/1) ... [2019-11-27 23:36:07,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c7f4e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:07, skipping insertion in model container [2019-11-27 23:36:07,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:36:07" (1/1) ... [2019-11-27 23:36:07,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:36:07,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:36:07,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:36:07,709 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:36:07,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:36:07,740 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:36:07,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:07 WrapperNode [2019-11-27 23:36:07,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:36:07,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:36:07,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:36:07,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:36:07,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:07" (1/1) ... [2019-11-27 23:36:07,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:07" (1/1) ... [2019-11-27 23:36:07,837 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:36:07,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:36:07,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:36:07,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:36:07,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:07" (1/1) ... [2019-11-27 23:36:07,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:07" (1/1) ... [2019-11-27 23:36:07,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:07" (1/1) ... [2019-11-27 23:36:07,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:07" (1/1) ... [2019-11-27 23:36:07,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:07" (1/1) ... [2019-11-27 23:36:07,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:07" (1/1) ... [2019-11-27 23:36:07,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:07" (1/1) ... [2019-11-27 23:36:07,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:36:07,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:36:07,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:36:07,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:36:07,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-27 23:36:07,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:36:07,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:36:08,543 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:36:08,543 INFO L297 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-27 23:36:08,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:36:08 BoogieIcfgContainer [2019-11-27 23:36:08,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:36:08,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:36:08,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:36:08,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:36:08,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:36:07" (1/3) ... [2019-11-27 23:36:08,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6713a34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:36:08, skipping insertion in model container [2019-11-27 23:36:08,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:07" (2/3) ... [2019-11-27 23:36:08,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6713a34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:36:08, skipping insertion in model container [2019-11-27 23:36:08,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:36:08" (3/3) ... [2019-11-27 23:36:08,555 INFO L109 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2019-11-27 23:36:08,566 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:36:08,573 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:36:08,587 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:36:08,616 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:36:08,617 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:36:08,617 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:36:08,617 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:36:08,618 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:36:08,618 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:36:08,618 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:36:08,618 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:36:08,630 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-27 23:36:08,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-27 23:36:08,634 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:36:08,635 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-27 23:36:08,636 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:36:08,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:36:08,643 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2019-11-27 23:36:08,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:36:08,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936242766] [2019-11-27 23:36:08,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-27 23:36:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:36:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:36:08,906 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-27 23:36:08,907 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:36:09,108 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 23:36:09,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:36:09 BoogieIcfgContainer [2019-11-27 23:36:09,128 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:36:09,129 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:36:09,129 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:36:09,129 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:36:09,130 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:36:08" (3/4) ... [2019-11-27 23:36:09,132 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:36:09,175 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:36:09,175 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:36:09,178 INFO L168 Benchmark]: Toolchain (without parser) took 1709.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -145.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:36:09,179 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:36:09,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.06 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. [2019-11-27 23:36:09,180 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -192.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:36:09,181 INFO L168 Benchmark]: Boogie Preprocessor took 24.56 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. [2019-11-27 23:36:09,182 INFO L168 Benchmark]: RCFGBuilder took 682.33 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:36:09,183 INFO L168 Benchmark]: TraceAbstraction took 582.04 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: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:36:09,183 INFO L168 Benchmark]: Witness Printer took 46.60 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. [2019-11-27 23:36:09,188 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 273.06 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 95.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -192.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.56 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. * RCFGBuilder took 682.33 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 582.04 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: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * Witness Printer took 46.60 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, 9 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=9occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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...