./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/inv_square_int.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/inv_square_int.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 ee0c6b2fd1dba5f6582edafa423ed0f7753efa75 ................................................................................................................................................................................................................................................................................................................... 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/inv_square_int.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 ee0c6b2fd1dba5f6582edafa423ed0f7753efa75 ........................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:26:25,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:26:25,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:26:25,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:26:25,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:26:25,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:26:25,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:26:25,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:26:25,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:26:25,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:26:25,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:26:25,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:26:25,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:26:25,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:26:25,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:26:25,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:26:25,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:26:25,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:26:25,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:26:25,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:26:25,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:26:25,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:26:25,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:26:25,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:26:25,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:26:25,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:26:25,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:26:25,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:26:25,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:26:25,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:26:25,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:26:25,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:26:25,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:26:25,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:26:25,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:26:25,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:26:25,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:26:25,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:26:25,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:26:25,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:26:25,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:26:25,620 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:26:25,652 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:26:25,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:26:25,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:26:25,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:26:25,655 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:26:25,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:26:25,656 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:26:25,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:26:25,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:26:25,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:26:25,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:26:25,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:26:25,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:26:25,659 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:26:25,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:26:25,660 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:26:25,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:26:25,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:26:25,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:26:25,661 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:26:25,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:26:25,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:26:25,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:26:25,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:26:25,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:26:25,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:26:25,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:26:25,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:26:25,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:26:25,664 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 -> ee0c6b2fd1dba5f6582edafa423ed0f7753efa75 [2020-07-28 17:26:26,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:26:26,059 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:26:26,063 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:26:26,064 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:26:26,065 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:26:26,066 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square_int.c [2020-07-28 17:26:26,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94d2f2ffa/2bf189cc8d1e43b6a1bfc7a8423d1ff5/FLAGeada43c88 [2020-07-28 17:26:26,566 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:26:26,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square_int.c [2020-07-28 17:26:26,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94d2f2ffa/2bf189cc8d1e43b6a1bfc7a8423d1ff5/FLAGeada43c88 [2020-07-28 17:26:26,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94d2f2ffa/2bf189cc8d1e43b6a1bfc7a8423d1ff5 [2020-07-28 17:26:26,991 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:26:26,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:26:26,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:26:27,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:26:27,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:26:27,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:26:26" (1/1) ... [2020-07-28 17:26:27,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@531c53f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:27, skipping insertion in model container [2020-07-28 17:26:27,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:26:26" (1/1) ... [2020-07-28 17:26:27,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:26:27,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:26:27,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:26:27,321 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:26:27,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:26:27,363 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:26:27,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:27 WrapperNode [2020-07-28 17:26:27,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:26:27,367 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:26:27,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:26:27,368 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:26:27,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:27" (1/1) ... [2020-07-28 17:26:27,387 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:27" (1/1) ... [2020-07-28 17:26:27,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:26:27,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:26:27,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:26:27,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:26:27,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:27" (1/1) ... [2020-07-28 17:26:27,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:27" (1/1) ... [2020-07-28 17:26:27,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:27" (1/1) ... [2020-07-28 17:26:27,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:27" (1/1) ... [2020-07-28 17:26:27,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:27" (1/1) ... [2020-07-28 17:26:27,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:27" (1/1) ... [2020-07-28 17:26:27,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:27" (1/1) ... [2020-07-28 17:26:27,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:26:27,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:26:27,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:26:27,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:26:27,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:27" (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 17:26:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:26:27,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:26:27,776 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:26:27,776 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-07-28 17:26:27,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:26:27 BoogieIcfgContainer [2020-07-28 17:26:27,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:26:27,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:26:27,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:26:27,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:26:27,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:26:26" (1/3) ... [2020-07-28 17:26:27,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165bc227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:26:27, skipping insertion in model container [2020-07-28 17:26:27,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:27" (2/3) ... [2020-07-28 17:26:27,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165bc227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:26:27, skipping insertion in model container [2020-07-28 17:26:27,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:26:27" (3/3) ... [2020-07-28 17:26:27,789 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_square_int.c [2020-07-28 17:26:27,801 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:26:27,810 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:26:27,831 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:26:27,865 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:26:27,866 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:26:27,866 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:26:27,866 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:26:27,866 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:26:27,867 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:26:27,867 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:26:27,867 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:26:27,890 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-07-28 17:26:27,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-28 17:26:27,896 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:26:27,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-28 17:26:27,899 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:26:27,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:26:27,907 INFO L82 PathProgramCache]: Analyzing trace with hash 29679878, now seen corresponding path program 1 times [2020-07-28 17:26:27,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:26:27,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642895436] [2020-07-28 17:26:27,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:26:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:26:28,065 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 17:26:28,071 INFO L280 TraceCheckUtils]: 1: Hoare triple {13#true} assume 0 == assume_abort_if_not_~cond;assume false; {14#false} is VALID [2020-07-28 17:26:28,072 INFO L280 TraceCheckUtils]: 2: Hoare triple {14#false} main_~y~0 := ~someBinaryArithmeticFLOAToperation(~convertINTToFLOAT(main_~x~0 * main_~x~0), 2.0);__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 17:26:28,072 INFO L280 TraceCheckUtils]: 3: Hoare triple {14#false} assume 0 == __VERIFIER_assert_~cond; {14#false} is VALID [2020-07-28 17:26:28,073 INFO L280 TraceCheckUtils]: 4: Hoare triple {14#false} assume !false; {14#false} is VALID [2020-07-28 17:26:28,075 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 17:26:28,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642895436] [2020-07-28 17:26:28,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:26:28,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 17:26:28,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730805246] [2020-07-28 17:26:28,082 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-07-28 17:26:28,084 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:26:28,087 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:26:28,116 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 17:26:28,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:26:28,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:26:28,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:26:28,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:26:28,127 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 2 states. [2020-07-28 17:26:28,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:26:28,165 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-07-28 17:26:28,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:26:28,166 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-07-28 17:26:28,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:26:28,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:26:28,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 19 transitions. [2020-07-28 17:26:28,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:26:28,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 19 transitions. [2020-07-28 17:26:28,175 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 19 transitions. [2020-07-28 17:26:28,230 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 17:26:28,241 INFO L225 Difference]: With dead ends: 18 [2020-07-28 17:26:28,242 INFO L226 Difference]: Without dead ends: 6 [2020-07-28 17:26:28,245 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 17:26:28,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2020-07-28 17:26:28,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-07-28 17:26:28,267 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:26:28,268 INFO L82 GeneralOperation]: Start isEquivalent. First operand 6 states. Second operand 6 states. [2020-07-28 17:26:28,268 INFO L74 IsIncluded]: Start isIncluded. First operand 6 states. Second operand 6 states. [2020-07-28 17:26:28,268 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 6 states. [2020-07-28 17:26:28,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:26:28,270 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2020-07-28 17:26:28,270 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2020-07-28 17:26:28,270 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:26:28,271 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:26:28,271 INFO L74 IsIncluded]: Start isIncluded. First operand 6 states. Second operand 6 states. [2020-07-28 17:26:28,271 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 6 states. [2020-07-28 17:26:28,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:26:28,272 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2020-07-28 17:26:28,272 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2020-07-28 17:26:28,273 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:26:28,273 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:26:28,273 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:26:28,273 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:26:28,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-28 17:26:28,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2020-07-28 17:26:28,276 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 5 [2020-07-28 17:26:28,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:26:28,277 INFO L479 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2020-07-28 17:26:28,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:26:28,277 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2020-07-28 17:26:28,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-28 17:26:28,277 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:26:28,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-28 17:26:28,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:26:28,278 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:26:28,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:26:28,279 INFO L82 PathProgramCache]: Analyzing trace with hash 29739460, now seen corresponding path program 1 times [2020-07-28 17:26:28,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:26:28,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135867330] [2020-07-28 17:26:28,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:26:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:26:28,302 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:26:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:26:28,315 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:26:28,335 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 17:26:28,335 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:26:28,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 17:26:28,355 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:26:28,356 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-28 17:26:28,356 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-28 17:26:28,356 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-28 17:26:28,356 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 17:26:28,356 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 17:26:28,357 WARN L170 areAnnotationChecker]: L11-1 has no Hoare annotation [2020-07-28 17:26:28,357 WARN L170 areAnnotationChecker]: L11-1 has no Hoare annotation [2020-07-28 17:26:28,357 WARN L170 areAnnotationChecker]: L11-3 has no Hoare annotation [2020-07-28 17:26:28,357 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-28 17:26:28,357 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:26:28,357 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 17:26:28,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:26:28 BoogieIcfgContainer [2020-07-28 17:26:28,360 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:26:28,360 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:26:28,361 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:26:28,361 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:26:28,362 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:26:27" (3/4) ... [2020-07-28 17:26:28,366 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-28 17:26:28,366 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:26:28,369 INFO L168 Benchmark]: Toolchain (without parser) took 1375.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -125.2 MB). Peak memory consumption was 16.3 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:28,370 INFO L168 Benchmark]: CDTParser took 0.82 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:26:28,371 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.72 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:28,372 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -182.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:28,372 INFO L168 Benchmark]: Boogie Preprocessor took 30.52 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 17:26:28,373 INFO L168 Benchmark]: RCFGBuilder took 275.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:28,374 INFO L168 Benchmark]: TraceAbstraction took 578.27 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: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:28,375 INFO L168 Benchmark]: Witness Printer took 5.48 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 17:26:28,379 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 0.82 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 366.72 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 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 106.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -182.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.52 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 275.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 578.27 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: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. * Witness Printer took 5.48 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: 11]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 22, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L15] int x; [L16] float y, z; [L18] x = __VERIFIER_nondet_int() [L9] COND FALSE !(!cond) [L21] y = x*x - 2.f [L11] COND TRUE !(cond) [L11] __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 17:26:30,403 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-28 17:26:30,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:26:30,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:26:30,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:26:30,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:26:30,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:26:30,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:26:30,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:26:30,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:26:30,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:26:30,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:26:30,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:26:30,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 17:26:30,519 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:26:30,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:26:30,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:26:30,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:26:30,521 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:26:30,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:26:30,522 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:26:30,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:26:30,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:26:30,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:26:30,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:26:30,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:26:30,524 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 17:26:30,524 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 17:26:30,525 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:26:30,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:26:30,525 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:26:30,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:26:30,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:26:30,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:26:30,526 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:26:30,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:26:30,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:26:30,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:26:30,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:26:30,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:26:30,527 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 17:26:30,528 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 17:26:30,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:26:30,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:26:30,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 17:26:30,529 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 -> ee0c6b2fd1dba5f6582edafa423ed0f7753efa75 [2020-07-28 17:26:30,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:26:30,903 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:26:30,907 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:26:30,909 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:26:30,909 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:26:30,910 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square_int.c [2020-07-28 17:26:30,971 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60ea919d4/3d8811e3dea24552be26cc79ac1f0af5/FLAGa42fc7475 [2020-07-28 17:26:31,423 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:26:31,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square_int.c [2020-07-28 17:26:31,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60ea919d4/3d8811e3dea24552be26cc79ac1f0af5/FLAGa42fc7475 [2020-07-28 17:26:31,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60ea919d4/3d8811e3dea24552be26cc79ac1f0af5 [2020-07-28 17:26:31,757 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:26:31,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:26:31,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:26:31,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:26:31,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:26:31,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:26:31" (1/1) ... [2020-07-28 17:26:31,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1569f8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:31, skipping insertion in model container [2020-07-28 17:26:31,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:26:31" (1/1) ... [2020-07-28 17:26:31,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:26:31,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:26:31,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:26:31,979 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:26:31,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:26:32,014 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:26:32,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:32 WrapperNode [2020-07-28 17:26:32,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:26:32,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:26:32,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:26:32,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:26:32,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:32" (1/1) ... [2020-07-28 17:26:32,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:32" (1/1) ... [2020-07-28 17:26:32,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:26:32,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:26:32,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:26:32,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:26:32,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:32" (1/1) ... [2020-07-28 17:26:32,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:32" (1/1) ... [2020-07-28 17:26:32,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:32" (1/1) ... [2020-07-28 17:26:32,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:32" (1/1) ... [2020-07-28 17:26:32,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:32" (1/1) ... [2020-07-28 17:26:32,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:32" (1/1) ... [2020-07-28 17:26:32,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:32" (1/1) ... [2020-07-28 17:26:32,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:26:32,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:26:32,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:26:32,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:26:32,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:32" (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 17:26:32,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:26:32,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:26:33,450 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:26:33,450 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-07-28 17:26:33,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:26:33 BoogieIcfgContainer [2020-07-28 17:26:33,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:26:33,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:26:33,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:26:33,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:26:33,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:26:31" (1/3) ... [2020-07-28 17:26:33,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14100366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:26:33, skipping insertion in model container [2020-07-28 17:26:33,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:32" (2/3) ... [2020-07-28 17:26:33,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14100366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:26:33, skipping insertion in model container [2020-07-28 17:26:33,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:26:33" (3/3) ... [2020-07-28 17:26:33,462 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_square_int.c [2020-07-28 17:26:33,470 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:26:33,476 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:26:33,488 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:26:33,518 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:26:33,518 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:26:33,518 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:26:33,519 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:26:33,519 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:26:33,519 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:26:33,520 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:26:33,520 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:26:33,538 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-07-28 17:26:33,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-28 17:26:33,544 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:26:33,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-07-28 17:26:33,545 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:26:33,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:26:33,551 INFO L82 PathProgramCache]: Analyzing trace with hash 889508713, now seen corresponding path program 1 times [2020-07-28 17:26:33,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:26:33,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051862212] [2020-07-28 17:26:33,563 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 17:26:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:26:33,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-28 17:26:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:26:33,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:26:33,696 INFO L280 TraceCheckUtils]: 0: Hoare triple {14#true} currentRoundingMode := ~roundNearestTiesToEven; {14#true} is VALID [2020-07-28 17:26:33,697 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 17:26:33,698 INFO L280 TraceCheckUtils]: 2: Hoare triple {14#true} assume 0bv32 == assume_abort_if_not_~cond;assume false; {15#false} is VALID [2020-07-28 17:26:33,699 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, 2.0));__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 17:26:33,699 INFO L280 TraceCheckUtils]: 4: Hoare triple {15#false} assume 0bv32 == __VERIFIER_assert_~cond; {15#false} is VALID [2020-07-28 17:26:33,699 INFO L280 TraceCheckUtils]: 5: Hoare triple {15#false} assume !false; {15#false} is VALID [2020-07-28 17:26:33,702 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 17:26:33,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:26:33,718 INFO L280 TraceCheckUtils]: 5: Hoare triple {15#false} assume !false; {15#false} is VALID [2020-07-28 17:26:33,718 INFO L280 TraceCheckUtils]: 4: Hoare triple {15#false} assume 0bv32 == __VERIFIER_assert_~cond; {15#false} is VALID [2020-07-28 17:26:33,719 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, 2.0));__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 17:26:33,720 INFO L280 TraceCheckUtils]: 2: Hoare triple {14#true} assume 0bv32 == assume_abort_if_not_~cond;assume false; {15#false} is VALID [2020-07-28 17:26:33,720 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 17:26:33,720 INFO L280 TraceCheckUtils]: 0: Hoare triple {14#true} currentRoundingMode := ~roundNearestTiesToEven; {14#true} is VALID [2020-07-28 17:26:33,721 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 17:26:33,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051862212] [2020-07-28 17:26:33,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:26:33,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-07-28 17:26:33,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933546552] [2020-07-28 17:26:33,730 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-07-28 17:26:33,732 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:26:33,735 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:26:33,800 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 17:26:33,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:26:33,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:26:33,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:26:33,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:26:33,810 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-07-28 17:26:36,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:26:36,215 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-07-28 17:26:36,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:26:36,215 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-07-28 17:26:36,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:26:36,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:26:36,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 20 transitions. [2020-07-28 17:26:36,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:26:36,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 20 transitions. [2020-07-28 17:26:36,225 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 20 transitions. [2020-07-28 17:26:36,624 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 17:26:36,636 INFO L225 Difference]: With dead ends: 19 [2020-07-28 17:26:36,636 INFO L226 Difference]: Without dead ends: 7 [2020-07-28 17:26:36,640 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 17:26:36,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-07-28 17:26:36,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-07-28 17:26:36,683 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:26:36,684 INFO L82 GeneralOperation]: Start isEquivalent. First operand 7 states. Second operand 7 states. [2020-07-28 17:26:36,685 INFO L74 IsIncluded]: Start isIncluded. First operand 7 states. Second operand 7 states. [2020-07-28 17:26:36,686 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 7 states. [2020-07-28 17:26:36,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:26:36,688 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-07-28 17:26:36,689 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-07-28 17:26:36,689 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:26:36,689 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:26:36,690 INFO L74 IsIncluded]: Start isIncluded. First operand 7 states. Second operand 7 states. [2020-07-28 17:26:36,690 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 7 states. [2020-07-28 17:26:36,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:26:36,692 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-07-28 17:26:36,692 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-07-28 17:26:36,692 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:26:36,693 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:26:36,693 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:26:36,693 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:26:36,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-28 17:26:36,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-07-28 17:26:36,698 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2020-07-28 17:26:36,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:26:36,698 INFO L479 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-07-28 17:26:36,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:26:36,699 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-07-28 17:26:36,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-28 17:26:36,700 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:26:36,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-07-28 17:26:36,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 17:26:36,917 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:26:36,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:26:36,918 INFO L82 PathProgramCache]: Analyzing trace with hash 889568295, now seen corresponding path program 1 times [2020-07-28 17:26:36,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:26:36,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977394569] [2020-07-28 17:26:36,920 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 17:26:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:26:37,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-28 17:26:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2020-07-28 17:26:39,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:26:41,771 INFO L280 TraceCheckUtils]: 0: Hoare triple {92#true} currentRoundingMode := ~roundNearestTiesToEven; {97#(= currentRoundingMode roundNearestTiesToEven)} is VALID [2020-07-28 17:26:41,773 INFO L280 TraceCheckUtils]: 1: Hoare triple {97#(= currentRoundingMode roundNearestTiesToEven)} 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; {97#(= currentRoundingMode roundNearestTiesToEven)} is VALID [2020-07-28 17:26:41,775 INFO L280 TraceCheckUtils]: 2: Hoare triple {97#(= currentRoundingMode roundNearestTiesToEven)} assume !(0bv32 == assume_abort_if_not_~cond); {97#(= currentRoundingMode roundNearestTiesToEven)} is VALID [2020-07-28 17:26:43,806 INFO L280 TraceCheckUtils]: 3: Hoare triple {97#(= currentRoundingMode roundNearestTiesToEven)} main_~y~0 := ~fp.sub~FLOAT(currentRoundingMode, ~convertINTToFLOAT(currentRoundingMode, ~bvmul32(main_~x~0, main_~x~0)), ~to_fp~FLOAT(currentRoundingMode, 2.0));__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; {107#(= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))} is UNKNOWN [2020-07-28 17:26:43,814 INFO L280 TraceCheckUtils]: 4: Hoare triple {107#(= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))} assume 0bv32 == __VERIFIER_assert_~cond; {93#false} is VALID [2020-07-28 17:26:43,815 INFO L280 TraceCheckUtils]: 5: Hoare triple {93#false} assume !false; {93#false} is VALID [2020-07-28 17:26:43,816 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 17:26:43,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:26:49,109 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32))) (not (fp.eq (fp.sub c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (bvmul ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) ((_ to_fp 8 24) c_currentRoundingMode 2.0)) (_ +zero 8 24)))) is different from true [2020-07-28 17:26:49,132 INFO L280 TraceCheckUtils]: 5: Hoare triple {93#false} assume !false; {93#false} is VALID [2020-07-28 17:26:49,132 INFO L280 TraceCheckUtils]: 4: Hoare triple {117#(not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))} assume 0bv32 == __VERIFIER_assert_~cond; {93#false} is VALID [2020-07-28 17:26:49,178 INFO L280 TraceCheckUtils]: 3: Hoare triple {121#(forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32))) (not (fp.eq (fp.sub currentRoundingMode ((_ to_fp 8 24) currentRoundingMode (bvmul ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) ((_ to_fp 8 24) currentRoundingMode 2.0)) (_ +zero 8 24))))} main_~y~0 := ~fp.sub~FLOAT(currentRoundingMode, ~convertINTToFLOAT(currentRoundingMode, ~bvmul32(main_~x~0, main_~x~0)), ~to_fp~FLOAT(currentRoundingMode, 2.0));__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; {117#(not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))} is VALID [2020-07-28 17:26:49,182 INFO L280 TraceCheckUtils]: 2: Hoare triple {121#(forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32))) (not (fp.eq (fp.sub currentRoundingMode ((_ to_fp 8 24) currentRoundingMode (bvmul ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) ((_ to_fp 8 24) currentRoundingMode 2.0)) (_ +zero 8 24))))} assume !(0bv32 == assume_abort_if_not_~cond); {121#(forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32))) (not (fp.eq (fp.sub currentRoundingMode ((_ to_fp 8 24) currentRoundingMode (bvmul ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) ((_ to_fp 8 24) currentRoundingMode 2.0)) (_ +zero 8 24))))} is VALID [2020-07-28 17:26:49,184 INFO L280 TraceCheckUtils]: 1: Hoare triple {121#(forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32))) (not (fp.eq (fp.sub currentRoundingMode ((_ to_fp 8 24) currentRoundingMode (bvmul ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) ((_ to_fp 8 24) currentRoundingMode 2.0)) (_ +zero 8 24))))} 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; {121#(forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32))) (not (fp.eq (fp.sub currentRoundingMode ((_ to_fp 8 24) currentRoundingMode (bvmul ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) ((_ to_fp 8 24) currentRoundingMode 2.0)) (_ +zero 8 24))))} is VALID [2020-07-28 17:26:50,950 INFO L280 TraceCheckUtils]: 0: Hoare triple {92#true} currentRoundingMode := ~roundNearestTiesToEven; {121#(forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32))) (not (fp.eq (fp.sub currentRoundingMode ((_ to_fp 8 24) currentRoundingMode (bvmul ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) ((_ to_fp 8 24) currentRoundingMode 2.0)) (_ +zero 8 24))))} is VALID [2020-07-28 17:26:50,951 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 17:26:50,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977394569] [2020-07-28 17:26:50,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:26:50,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-07-28 17:26:50,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042214525] [2020-07-28 17:26:50,954 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-07-28 17:26:50,955 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:26:50,955 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-28 17:26:53,676 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:26:53,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-28 17:26:53,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:26:53,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-28 17:26:53,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2020-07-28 17:26:53,678 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand 6 states. [2020-07-28 17:26:59,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:26:59,359 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-07-28 17:26:59,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 17:26:59,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-07-28 17:26:59,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:26:59,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-28 17:26:59,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-07-28 17:26:59,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-28 17:26:59,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-07-28 17:26:59,362 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 6 transitions. [2020-07-28 17:27:01,444 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 17:27:01,445 INFO L225 Difference]: With dead ends: 7 [2020-07-28 17:27:01,446 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 17:27:01,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=15, Invalid=18, Unknown=1, NotChecked=8, Total=42 [2020-07-28 17:27:01,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 17:27:01,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 17:27:01,449 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:27:01,449 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 17:27:01,450 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:27:01,450 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:27:01,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:27:01,451 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:27:01,451 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:27:01,451 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:27:01,451 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:27:01,451 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:27:01,452 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:27:01,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:27:01,452 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:27:01,452 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:27:01,452 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:27:01,453 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:27:01,453 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:27:01,453 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:27:01,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 17:27:01,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 17:27:01,454 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-07-28 17:27:01,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:27:01,455 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 17:27:01,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-28 17:27:01,455 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:27:01,455 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:27:01,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-07-28 17:27:01,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 17:27:01,736 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 17:27:01,736 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-07-28 17:27:01,737 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 17:27:01,737 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 17:27:01,737 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2020-07-28 17:27:01,738 INFO L271 CegarLoopResult]: At program point L24(lines 13 25) the Hoare annotation is: true [2020-07-28 17:27:01,738 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-07-28 17:27:01,739 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-07-28 17:27:01,739 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-07-28 17:27:01,739 INFO L268 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-07-28 17:27:01,739 INFO L271 CegarLoopResult]: At program point L11-3(line 11) the Hoare annotation is: true [2020-07-28 17:27:01,746 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:27:01,747 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:27:01,747 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-28 17:27:01,747 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-28 17:27:01,747 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-28 17:27:01,748 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 17:27:01,748 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 17:27:01,748 WARN L170 areAnnotationChecker]: L11-1 has no Hoare annotation [2020-07-28 17:27:01,748 WARN L170 areAnnotationChecker]: L11-1 has no Hoare annotation [2020-07-28 17:27:01,749 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:27:01,749 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:27:01,749 INFO L163 areAnnotationChecker]: CFG has 1 edges. 1 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:27:01,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:27:01 BoogieIcfgContainer [2020-07-28 17:27:01,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:27:01,761 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:27:01,761 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:27:01,762 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:27:01,763 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:26:33" (3/4) ... [2020-07-28 17:27:01,771 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 17:27:01,794 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-07-28 17:27:01,795 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-07-28 17:27:01,796 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-07-28 17:27:01,856 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:27:01,856 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:27:01,861 INFO L168 Benchmark]: Toolchain (without parser) took 30100.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 960.2 MB in the beginning and 1.0 GB in the end (delta: -57.1 MB). Peak memory consumption was 69.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:27:01,861 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:27:01,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.22 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:27:01,864 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -173.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:27:01,865 INFO L168 Benchmark]: Boogie Preprocessor took 25.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:27:01,866 INFO L168 Benchmark]: RCFGBuilder took 1309.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:27:01,866 INFO L168 Benchmark]: TraceAbstraction took 28304.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 78.8 MB). Peak memory consumption was 78.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:27:01,867 INFO L168 Benchmark]: Witness Printer took 95.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:27:01,873 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 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 253.22 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 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 103.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -173.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1309.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 28304.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 78.8 MB). Peak memory consumption was 78.8 MB. Max. memory is 11.5 GB. * Witness Printer took 95.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 28.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 10.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 1 SDslu, 3 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0s 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 13.9s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 3 QuantifiedInterpolants, 360 SizeOfPredicates, 6 NumberOfNonLiveVariables, 24 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 correct! Received shutdown request...