./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/float_int_inv_square.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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 6a1da4f45ffc8630a3c1b9266d3b52b062b202b2 ................................................................................................................................................................................................................................................................................................................... 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 -ea -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 6a1da4f45ffc8630a3c1b9266d3b52b062b202b2 ........................................................................................................................................................................................................................................................................................................................................ 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 0.1.25-8bd4bc6 [2020-07-28 17:24:22,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:24:22,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:24:22,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:24:22,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:24:22,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:24:22,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:24:22,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:24:22,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:24:22,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:24:22,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:24:22,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:24:22,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:24:22,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:24:22,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:24:23,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:24:23,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:24:23,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:24:23,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:24:23,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:24:23,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:24:23,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:24:23,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:24:23,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:24:23,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:24:23,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:24:23,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:24:23,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:24:23,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:24:23,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:24:23,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:24:23,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:24:23,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:24:23,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:24:23,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:24:23,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:24:23,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:24:23,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:24:23,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:24:23,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:24:23,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:24:23,040 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:24:23,072 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:24:23,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:24:23,073 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:24:23,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:24:23,074 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:24:23,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:24:23,074 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:24:23,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:24:23,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:24:23,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:24:23,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:24:23,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:24:23,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:24:23,078 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:24:23,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:24:23,078 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:24:23,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:24:23,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:24:23,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:24:23,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:24:23,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:24:23,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:24:23,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:24:23,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:24:23,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:24:23,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:24:23,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:24:23,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:24:23,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:24:23,086 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 -> 6a1da4f45ffc8630a3c1b9266d3b52b062b202b2 [2020-07-28 17:24:23,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:24:23,389 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:24:23,392 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:24:23,394 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:24:23,394 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:24:23,395 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2020-07-28 17:24:23,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc177106d/b1d1888af33d4e228d9fa5ca33bfd7b8/FLAG9b17a98d6 [2020-07-28 17:24:23,896 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:24:23,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2020-07-28 17:24:23,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc177106d/b1d1888af33d4e228d9fa5ca33bfd7b8/FLAG9b17a98d6 [2020-07-28 17:24:24,286 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc177106d/b1d1888af33d4e228d9fa5ca33bfd7b8 [2020-07-28 17:24:24,289 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:24:24,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:24:24,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:24:24,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:24:24,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:24:24,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:24:24" (1/1) ... [2020-07-28 17:24:24,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b85cab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:24, skipping insertion in model container [2020-07-28 17:24:24,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:24:24" (1/1) ... [2020-07-28 17:24:24,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:24:24,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:24:24,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:24:24,505 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:24:24,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:24:24,535 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:24:24,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:24 WrapperNode [2020-07-28 17:24:24,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:24:24,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:24:24,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:24:24,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:24:24,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:24" (1/1) ... [2020-07-28 17:24:24,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:24" (1/1) ... [2020-07-28 17:24:24,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:24:24,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:24:24,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:24:24,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:24:24,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:24" (1/1) ... [2020-07-28 17:24:24,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:24" (1/1) ... [2020-07-28 17:24:24,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:24" (1/1) ... [2020-07-28 17:24:24,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:24" (1/1) ... [2020-07-28 17:24:24,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:24" (1/1) ... [2020-07-28 17:24:24,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:24" (1/1) ... [2020-07-28 17:24:24,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:24" (1/1) ... [2020-07-28 17:24:24,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:24:24,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:24:24,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:24:24,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:24:24,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:24" (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 [2020-07-28 17:24:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:24:24,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:24:24,916 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:24:24,916 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-07-28 17:24:24,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:24:24 BoogieIcfgContainer [2020-07-28 17:24:24,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:24:24,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:24:24,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:24:24,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:24:24,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:24:24" (1/3) ... [2020-07-28 17:24:24,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c0b326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:24:24, skipping insertion in model container [2020-07-28 17:24:24,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:24" (2/3) ... [2020-07-28 17:24:24,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c0b326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:24:24, skipping insertion in model container [2020-07-28 17:24:24,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:24:24" (3/3) ... [2020-07-28 17:24:24,954 INFO L109 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2020-07-28 17:24:24,973 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:24:24,991 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:24:25,007 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:24:25,031 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:24:25,032 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:24:25,032 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:24:25,032 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:24:25,032 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:24:25,033 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:24:25,033 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:24:25,033 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:24:25,053 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-07-28 17:24:25,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-28 17:24:25,059 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:24:25,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-28 17:24:25,060 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:24:25,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:24:25,066 INFO L82 PathProgramCache]: Analyzing trace with hash 29679878, now seen corresponding path program 1 times [2020-07-28 17:24:25,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:24:25,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218657317] [2020-07-28 17:24:25,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:24:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:24:25,197 INFO L280 TraceCheckUtils]: 0: Hoare triple {13#true} havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;assume_abort_if_not_#in~cond := (if main_~x~0 >= -10 && main_~x~0 <= 10 then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; {13#true} is VALID [2020-07-28 17:24:25,202 INFO L280 TraceCheckUtils]: 1: Hoare triple {13#true} assume 0 == assume_abort_if_not_~cond;assume false; {14#false} is VALID [2020-07-28 17:24:25,203 INFO L280 TraceCheckUtils]: 2: Hoare triple {14#false} main_~y~0 := ~someBinaryArithmeticFLOAToperation(~convertINTToFLOAT(main_~x~0 * main_~x~0), 4.0);__VERIFIER_assert_#in~cond := (if ~someBinaryFLOATComparisonOperation(main_~y~0, 0.0) then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {14#false} is VALID [2020-07-28 17:24:25,204 INFO L280 TraceCheckUtils]: 3: Hoare triple {14#false} assume 0 == __VERIFIER_assert_~cond; {14#false} is VALID [2020-07-28 17:24:25,204 INFO L280 TraceCheckUtils]: 4: Hoare triple {14#false} assume !false; {14#false} is VALID [2020-07-28 17:24:25,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:24:25,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218657317] [2020-07-28 17:24:25,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:24:25,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 17:24:25,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40482269] [2020-07-28 17:24:25,213 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-07-28 17:24:25,214 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:24:25,217 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:24:25,238 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 5 edges. 5 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:24:25,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:24:25,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:24:25,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:24:25,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:24:25,249 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 2 states. [2020-07-28 17:24:25,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:24:25,295 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-07-28 17:24:25,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:24:25,295 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-07-28 17:24:25,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:24:25,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:24:25,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 19 transitions. [2020-07-28 17:24:25,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:24:25,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 19 transitions. [2020-07-28 17:24:25,304 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 19 transitions. [2020-07-28 17:24:25,353 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:24:25,364 INFO L225 Difference]: With dead ends: 18 [2020-07-28 17:24:25,364 INFO L226 Difference]: Without dead ends: 6 [2020-07-28 17:24:25,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:24:25,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2020-07-28 17:24:25,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-07-28 17:24:25,395 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:24:25,395 INFO L82 GeneralOperation]: Start isEquivalent. First operand 6 states. Second operand 6 states. [2020-07-28 17:24:25,396 INFO L74 IsIncluded]: Start isIncluded. First operand 6 states. Second operand 6 states. [2020-07-28 17:24:25,397 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 6 states. [2020-07-28 17:24:25,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:24:25,399 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2020-07-28 17:24:25,399 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2020-07-28 17:24:25,399 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:24:25,400 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:24:25,400 INFO L74 IsIncluded]: Start isIncluded. First operand 6 states. Second operand 6 states. [2020-07-28 17:24:25,400 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 6 states. [2020-07-28 17:24:25,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:24:25,402 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2020-07-28 17:24:25,402 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2020-07-28 17:24:25,403 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:24:25,403 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:24:25,403 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:24:25,404 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:24:25,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-28 17:24:25,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2020-07-28 17:24:25,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 5 [2020-07-28 17:24:25,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:24:25,408 INFO L479 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2020-07-28 17:24:25,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:24:25,408 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2020-07-28 17:24:25,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-28 17:24:25,409 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:24:25,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-28 17:24:25,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:24:25,410 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:24:25,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:24:25,411 INFO L82 PathProgramCache]: Analyzing trace with hash 29739460, now seen corresponding path program 1 times [2020-07-28 17:24:25,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:24:25,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210468679] [2020-07-28 17:24:25,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:24:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:24:25,434 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:24:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:24:25,447 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:24:25,467 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 17:24:25,468 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:24:25,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 17:24:25,488 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:24:25,489 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-28 17:24:25,489 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-28 17:24:25,489 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-28 17:24:25,489 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-28 17:24:25,489 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-28 17:24:25,489 WARN L170 areAnnotationChecker]: L9-1 has no Hoare annotation [2020-07-28 17:24:25,490 WARN L170 areAnnotationChecker]: L9-1 has no Hoare annotation [2020-07-28 17:24:25,490 WARN L170 areAnnotationChecker]: L9-3 has no Hoare annotation [2020-07-28 17:24:25,490 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 17:24:25,490 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:24:25,490 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:24:25,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:24:25 BoogieIcfgContainer [2020-07-28 17:24:25,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:24:25,494 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:24:25,494 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:24:25,494 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:24:25,495 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:24:24" (3/4) ... [2020-07-28 17:24:25,499 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-28 17:24:25,499 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:24:25,503 INFO L168 Benchmark]: Toolchain (without parser) took 1211.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 956.2 MB in the beginning and 1.1 GB in the end (delta: -132.5 MB). Peak memory consumption was 11.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:24:25,503 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:24:25,504 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.62 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:24:25,505 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -188.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:24:25,506 INFO L168 Benchmark]: Boogie Preprocessor took 17.11 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. [2020-07-28 17:24:25,507 INFO L168 Benchmark]: RCFGBuilder took 277.90 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: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:24:25,508 INFO L168 Benchmark]: TraceAbstraction took 570.65 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: 32.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 11.5 GB. [2020-07-28 17:24:25,508 INFO L168 Benchmark]: Witness Printer took 5.32 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. [2020-07-28 17:24:25,513 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 242.62 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 88.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -188.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.11 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 277.90 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: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 570.65 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: 32.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 11.5 GB. * Witness Printer took 5.32 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: 9]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 20, overapproximation of someBinaryArithmeticFLOAToperation at line 19. Possible FailurePath: [L13] int x; [L14] float y, z; [L16] x = __VERIFIER_nondet_int() [L7] COND FALSE !(!cond) [L19] y = x*x - 4.f [L9] COND TRUE !(cond) [L9] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: 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 0.1.25-8bd4bc6 [2020-07-28 17:24:27,453 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-28 17:24:27,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:24:27,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:24:27,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:24:27,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:24:27,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:24:27,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:24:27,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:24:27,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:24:27,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:24:27,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:24:27,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:24:27,545 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 17:24:27,560 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:24:27,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:24:27,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:24:27,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:24:27,563 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:24:27,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:24:27,563 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:24:27,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:24:27,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:24:27,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:24:27,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:24:27,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:24:27,565 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 17:24:27,565 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 17:24:27,566 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:24:27,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:24:27,566 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:24:27,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:24:27,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:24:27,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:24:27,567 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:24:27,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:24:27,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:24:27,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:24:27,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:24:27,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:24:27,569 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 17:24:27,570 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 17:24:27,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:24:27,570 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:24:27,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 17:24:27,571 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 -> 6a1da4f45ffc8630a3c1b9266d3b52b062b202b2 [2020-07-28 17:24:27,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:24:27,890 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:24:27,893 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:24:27,895 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:24:27,895 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:24:27,896 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2020-07-28 17:24:27,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deb255e60/1f2272abbe344535b0f9863e526884ab/FLAGcf6ed0014 [2020-07-28 17:24:28,398 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:24:28,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2020-07-28 17:24:28,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deb255e60/1f2272abbe344535b0f9863e526884ab/FLAGcf6ed0014 [2020-07-28 17:24:28,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deb255e60/1f2272abbe344535b0f9863e526884ab [2020-07-28 17:24:28,752 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:24:28,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:24:28,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:24:28,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:24:28,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:24:28,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:24:28" (1/1) ... [2020-07-28 17:24:28,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4df8f573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:28, skipping insertion in model container [2020-07-28 17:24:28,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:24:28" (1/1) ... [2020-07-28 17:24:28,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:24:28,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:24:28,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:24:28,966 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:24:28,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:24:29,002 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:24:29,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:29 WrapperNode [2020-07-28 17:24:29,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:24:29,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:24:29,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:24:29,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:24:29,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:29" (1/1) ... [2020-07-28 17:24:29,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:29" (1/1) ... [2020-07-28 17:24:29,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:24:29,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:24:29,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:24:29,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:24:29,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:29" (1/1) ... [2020-07-28 17:24:29,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:29" (1/1) ... [2020-07-28 17:24:29,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:29" (1/1) ... [2020-07-28 17:24:29,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:29" (1/1) ... [2020-07-28 17:24:29,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:29" (1/1) ... [2020-07-28 17:24:29,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:29" (1/1) ... [2020-07-28 17:24:29,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:29" (1/1) ... [2020-07-28 17:24:29,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:24:29,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:24:29,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:24:29,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:24:29,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:29" (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 [2020-07-28 17:24:29,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:24:29,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:24:30,412 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:24:30,413 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-07-28 17:24:30,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:24:30 BoogieIcfgContainer [2020-07-28 17:24:30,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:24:30,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:24:30,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:24:30,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:24:30,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:24:28" (1/3) ... [2020-07-28 17:24:30,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b921237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:24:30, skipping insertion in model container [2020-07-28 17:24:30,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:24:29" (2/3) ... [2020-07-28 17:24:30,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b921237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:24:30, skipping insertion in model container [2020-07-28 17:24:30,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:24:30" (3/3) ... [2020-07-28 17:24:30,428 INFO L109 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2020-07-28 17:24:30,439 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:24:30,446 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:24:30,461 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:24:30,484 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:24:30,485 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:24:30,485 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:24:30,485 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:24:30,486 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:24:30,486 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:24:30,487 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:24:30,487 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:24:30,503 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-07-28 17:24:30,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-28 17:24:30,510 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:24:30,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-07-28 17:24:30,512 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:24:30,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:24:30,519 INFO L82 PathProgramCache]: Analyzing trace with hash 889508713, now seen corresponding path program 1 times [2020-07-28 17:24:30,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:24:30,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873640546] [2020-07-28 17:24:30,535 INFO L95 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 [2020-07-28 17:24:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:24:30,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-28 17:24:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:24:30,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:24:30,676 INFO L280 TraceCheckUtils]: 0: Hoare triple {14#true} currentRoundingMode := ~roundNearestTiesToEven; {14#true} is VALID [2020-07-28 17:24:30,677 INFO L280 TraceCheckUtils]: 1: Hoare triple {14#true} havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;assume_abort_if_not_#in~cond := (if ~bvsge32(main_~x~0, 4294967286bv32) && ~bvsle32(main_~x~0, 10bv32) then 1bv32 else 0bv32);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; {14#true} is VALID [2020-07-28 17:24:30,681 INFO L280 TraceCheckUtils]: 2: Hoare triple {14#true} assume 0bv32 == assume_abort_if_not_~cond;assume false; {15#false} is VALID [2020-07-28 17:24:30,682 INFO L280 TraceCheckUtils]: 3: Hoare triple {15#false} main_~y~0 := ~fp.sub~FLOAT(currentRoundingMode, ~convertINTToFLOAT(currentRoundingMode, ~bvmul32(main_~x~0, main_~x~0)), ~to_fp~FLOAT(currentRoundingMode, 4.0));__VERIFIER_assert_#in~cond := (if !~fp.eq~FLOAT(main_~y~0, ~Pluszero~FLOAT()) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {15#false} is VALID [2020-07-28 17:24:30,682 INFO L280 TraceCheckUtils]: 4: Hoare triple {15#false} assume 0bv32 == __VERIFIER_assert_~cond; {15#false} is VALID [2020-07-28 17:24:30,683 INFO L280 TraceCheckUtils]: 5: Hoare triple {15#false} assume !false; {15#false} is VALID [2020-07-28 17:24:30,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:24:30,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:24:30,701 INFO L280 TraceCheckUtils]: 5: Hoare triple {15#false} assume !false; {15#false} is VALID [2020-07-28 17:24:30,702 INFO L280 TraceCheckUtils]: 4: Hoare triple {15#false} assume 0bv32 == __VERIFIER_assert_~cond; {15#false} is VALID [2020-07-28 17:24:30,702 INFO L280 TraceCheckUtils]: 3: Hoare triple {15#false} main_~y~0 := ~fp.sub~FLOAT(currentRoundingMode, ~convertINTToFLOAT(currentRoundingMode, ~bvmul32(main_~x~0, main_~x~0)), ~to_fp~FLOAT(currentRoundingMode, 4.0));__VERIFIER_assert_#in~cond := (if !~fp.eq~FLOAT(main_~y~0, ~Pluszero~FLOAT()) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {15#false} is VALID [2020-07-28 17:24:30,704 INFO L280 TraceCheckUtils]: 2: Hoare triple {14#true} assume 0bv32 == assume_abort_if_not_~cond;assume false; {15#false} is VALID [2020-07-28 17:24:30,704 INFO L280 TraceCheckUtils]: 1: Hoare triple {14#true} havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;assume_abort_if_not_#in~cond := (if ~bvsge32(main_~x~0, 4294967286bv32) && ~bvsle32(main_~x~0, 10bv32) then 1bv32 else 0bv32);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; {14#true} is VALID [2020-07-28 17:24:30,705 INFO L280 TraceCheckUtils]: 0: Hoare triple {14#true} currentRoundingMode := ~roundNearestTiesToEven; {14#true} is VALID [2020-07-28 17:24:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:24:30,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873640546] [2020-07-28 17:24:30,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:24:30,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-07-28 17:24:30,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481439218] [2020-07-28 17:24:30,715 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-07-28 17:24:30,717 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:24:30,722 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:24:30,788 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:24:30,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:24:30,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:24:30,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:24:30,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:24:30,799 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-07-28 17:24:31,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:24:31,749 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-07-28 17:24:31,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:24:31,749 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-07-28 17:24:31,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:24:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:24:31,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 20 transitions. [2020-07-28 17:24:31,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:24:31,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 20 transitions. [2020-07-28 17:24:31,759 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 20 transitions. [2020-07-28 17:24:32,146 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:24:32,156 INFO L225 Difference]: With dead ends: 19 [2020-07-28 17:24:32,157 INFO L226 Difference]: Without dead ends: 7 [2020-07-28 17:24:32,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:24:32,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-07-28 17:24:32,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-07-28 17:24:32,188 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:24:32,188 INFO L82 GeneralOperation]: Start isEquivalent. First operand 7 states. Second operand 7 states. [2020-07-28 17:24:32,189 INFO L74 IsIncluded]: Start isIncluded. First operand 7 states. Second operand 7 states. [2020-07-28 17:24:32,189 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 7 states. [2020-07-28 17:24:32,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:24:32,192 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-07-28 17:24:32,192 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-07-28 17:24:32,192 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:24:32,193 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:24:32,193 INFO L74 IsIncluded]: Start isIncluded. First operand 7 states. Second operand 7 states. [2020-07-28 17:24:32,193 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 7 states. [2020-07-28 17:24:32,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:24:32,195 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-07-28 17:24:32,195 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-07-28 17:24:32,196 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:24:32,196 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:24:32,196 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:24:32,197 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:24:32,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-28 17:24:32,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-07-28 17:24:32,200 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2020-07-28 17:24:32,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:24:32,200 INFO L479 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-07-28 17:24:32,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:24:32,201 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-07-28 17:24:32,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-28 17:24:32,202 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:24:32,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-07-28 17:24:32,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 17:24:32,416 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:24:32,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:24:32,417 INFO L82 PathProgramCache]: Analyzing trace with hash 889568295, now seen corresponding path program 1 times [2020-07-28 17:24:32,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:24:32,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533635141] [2020-07-28 17:24:32,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-07-28 17:24:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:24:32,506 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:24:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:24:32,562 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:24:32,583 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-07-28 17:24:32,583 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:24:32,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-07-28 17:24:32,806 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:24:32,807 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:24:32,807 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-28 17:24:32,807 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-28 17:24:32,807 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-28 17:24:32,808 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-28 17:24:32,808 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-28 17:24:32,808 WARN L170 areAnnotationChecker]: L9-1 has no Hoare annotation [2020-07-28 17:24:32,808 WARN L170 areAnnotationChecker]: L9-1 has no Hoare annotation [2020-07-28 17:24:32,809 WARN L170 areAnnotationChecker]: L9-3 has no Hoare annotation [2020-07-28 17:24:32,809 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 17:24:32,809 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:24:32,809 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:24:32,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:24:32 BoogieIcfgContainer [2020-07-28 17:24:32,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:24:32,813 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:24:32,813 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:24:32,813 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:24:32,814 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:24:30" (3/4) ... [2020-07-28 17:24:32,816 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 17:24:32,867 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:24:32,867 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:24:32,871 INFO L168 Benchmark]: Toolchain (without parser) took 4115.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 954.9 MB in the beginning and 1.1 GB in the end (delta: -116.9 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:24:32,871 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:24:32,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.48 ms. Allocated memory is still 1.0 GB. Free memory was 954.9 MB in the beginning and 944.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:24:32,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 944.1 MB in the beginning and 1.1 GB in the end (delta: -189.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:24:32,874 INFO L168 Benchmark]: Boogie Preprocessor took 28.24 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. [2020-07-28 17:24:32,875 INFO L168 Benchmark]: RCFGBuilder took 1289.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:24:32,876 INFO L168 Benchmark]: TraceAbstraction took 2392.93 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: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:24:32,876 INFO L168 Benchmark]: Witness Printer took 54.60 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. [2020-07-28 17:24:32,880 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 246.48 ms. Allocated memory is still 1.0 GB. Free memory was 954.9 MB in the beginning and 944.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 95.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 944.1 MB in the beginning and 1.1 GB in the end (delta: -189.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.24 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 1289.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2392.93 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: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 11.5 GB. * Witness Printer took 54.60 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: 9]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] int x; [L14] float y, z; [L16] x = __VERIFIER_nondet_int() [L7] COND FALSE !(!cond) [L19] y = x*x - 4.f [L9] COND TRUE !(cond) [L9] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 50 SizeOfPredicates, 0 NumberOfNonLiveVariables, 12 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...