./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-benchs/inv_square_false-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-benchs/inv_square_false-unreach-call_true-termination.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 5cdc4d12f446be57385f35c672efbdd6980b00fa ................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-benchs/inv_square_false-unreach-call_true-termination.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 5cdc4d12f446be57385f35c672efbdd6980b00fa ...................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 17:40:16,574 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 17:40:16,576 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 17:40:16,596 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 17:40:16,597 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 17:40:16,599 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 17:40:16,600 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 17:40:16,602 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 17:40:16,604 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 17:40:16,605 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 17:40:16,606 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 17:40:16,606 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 17:40:16,607 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 17:40:16,609 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 17:40:16,610 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 17:40:16,611 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 17:40:16,612 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 17:40:16,614 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 17:40:16,617 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 17:40:16,619 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 17:40:16,620 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 17:40:16,622 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 17:40:16,625 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 17:40:16,625 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 17:40:16,625 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 17:40:16,627 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 17:40:16,628 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 17:40:16,629 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 17:40:16,630 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 17:40:16,631 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 17:40:16,632 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 17:40:16,632 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 17:40:16,633 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 17:40:16,633 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 17:40:16,634 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 17:40:16,635 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 17:40:16,636 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 17:40:16,652 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 17:40:16,652 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 17:40:16,653 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 17:40:16,654 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 17:40:16,654 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 17:40:16,654 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 17:40:16,655 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 17:40:16,655 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 17:40:16,655 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 17:40:16,655 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 17:40:16,655 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 17:40:16,657 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 17:40:16,657 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 17:40:16,657 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 17:40:16,657 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 17:40:16,657 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 17:40:16,657 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 17:40:16,658 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 17:40:16,658 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 17:40:16,659 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 17:40:16,659 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 17:40:16,659 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 17:40:16,659 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 17:40:16,659 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 17:40:16,659 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 17:40:16,661 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 17:40:16,661 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 17:40:16,661 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 17:40:16,661 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 17:40:16,661 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 17:40:16,661 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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 -> 5cdc4d12f446be57385f35c672efbdd6980b00fa [2018-11-28 17:40:16,716 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 17:40:16,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 17:40:16,744 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 17:40:16,746 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 17:40:16,747 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 17:40:16,747 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-benchs/inv_square_false-unreach-call_true-termination.c [2018-11-28 17:40:16,820 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcc95ad0b/8f0a816be1f1467eb0e52a7d3e9ec706/FLAG05eb9d60e [2018-11-28 17:40:17,357 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 17:40:17,358 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-benchs/inv_square_false-unreach-call_true-termination.c [2018-11-28 17:40:17,369 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcc95ad0b/8f0a816be1f1467eb0e52a7d3e9ec706/FLAG05eb9d60e [2018-11-28 17:40:17,708 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcc95ad0b/8f0a816be1f1467eb0e52a7d3e9ec706 [2018-11-28 17:40:17,714 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 17:40:17,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 17:40:17,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 17:40:17,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 17:40:17,728 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 17:40:17,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:40:17" (1/1) ... [2018-11-28 17:40:17,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b94ef99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:17, skipping insertion in model container [2018-11-28 17:40:17,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:40:17" (1/1) ... [2018-11-28 17:40:17,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 17:40:17,770 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 17:40:18,007 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:40:18,011 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 17:40:18,030 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:40:18,049 INFO L195 MainTranslator]: Completed translation [2018-11-28 17:40:18,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:18 WrapperNode [2018-11-28 17:40:18,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 17:40:18,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 17:40:18,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 17:40:18,051 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 17:40:18,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:18" (1/1) ... [2018-11-28 17:40:18,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:18" (1/1) ... [2018-11-28 17:40:18,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 17:40:18,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 17:40:18,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 17:40:18,077 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 17:40:18,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:18" (1/1) ... [2018-11-28 17:40:18,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:18" (1/1) ... [2018-11-28 17:40:18,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:18" (1/1) ... [2018-11-28 17:40:18,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:18" (1/1) ... [2018-11-28 17:40:18,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:18" (1/1) ... [2018-11-28 17:40:18,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:18" (1/1) ... [2018-11-28 17:40:18,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:18" (1/1) ... [2018-11-28 17:40:18,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 17:40:18,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 17:40:18,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 17:40:18,100 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 17:40:18,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:18" (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 [2018-11-28 17:40:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 17:40:18,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 17:40:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 17:40:18,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 17:40:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 17:40:18,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 17:40:18,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 17:40:18,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 17:40:18,429 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 17:40:18,431 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 17:40:18,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:40:18 BoogieIcfgContainer [2018-11-28 17:40:18,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 17:40:18,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 17:40:18,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 17:40:18,437 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 17:40:18,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:40:17" (1/3) ... [2018-11-28 17:40:18,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9ca23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:40:18, skipping insertion in model container [2018-11-28 17:40:18,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:18" (2/3) ... [2018-11-28 17:40:18,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9ca23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:40:18, skipping insertion in model container [2018-11-28 17:40:18,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:40:18" (3/3) ... [2018-11-28 17:40:18,441 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_square_false-unreach-call_true-termination.c [2018-11-28 17:40:18,451 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 17:40:18,458 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 17:40:18,474 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 17:40:18,508 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 17:40:18,509 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 17:40:18,509 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 17:40:18,509 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 17:40:18,509 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 17:40:18,510 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 17:40:18,510 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 17:40:18,510 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 17:40:18,510 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 17:40:18,530 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-28 17:40:18,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 17:40:18,536 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:40:18,537 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:40:18,540 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:40:18,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:40:18,546 INFO L82 PathProgramCache]: Analyzing trace with hash 697060158, now seen corresponding path program 1 times [2018-11-28 17:40:18,549 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 17:40:18,549 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 17:40:18,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:40:18,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:40:18,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:40:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 17:40:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 17:40:18,705 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 17:40:18,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:40:18 BoogieIcfgContainer [2018-11-28 17:40:18,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 17:40:18,736 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 17:40:18,736 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 17:40:18,736 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 17:40:18,737 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:40:18" (3/4) ... [2018-11-28 17:40:18,741 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 17:40:18,742 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 17:40:18,744 INFO L168 Benchmark]: Toolchain (without parser) took 1027.97 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 76.5 MB). Free memory was 951.4 MB in the beginning and 1.0 GB in the end (delta: -86.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:18,747 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:18,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.15 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 17:40:18,750 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.28 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:18,752 INFO L168 Benchmark]: Boogie Preprocessor took 22.06 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:18,753 INFO L168 Benchmark]: RCFGBuilder took 332.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 76.5 MB). Free memory was 940.6 MB in the beginning and 1.0 GB in the end (delta: -104.5 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2018-11-28 17:40:18,754 INFO L168 Benchmark]: TraceAbstraction took 302.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2018-11-28 17:40:18,759 INFO L168 Benchmark]: Witness Printer took 6.05 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:18,767 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 332.15 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 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 26.28 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.06 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 332.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 76.5 MB). Free memory was 940.6 MB in the beginning and 1.0 GB in the end (delta: -104.5 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 302.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Witness Printer took 6.05 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 19, overapproximation of someBinaryArithmeticFLOAToperation at line 18. Possible FailurePath: [L12] float x, y, z; [L14] x = __VERIFIER_nondet_float() [L17] COND TRUE x != 0.f [L18] y = x * x VAL [x=2] [L19] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-91b1670 [2018-11-28 17:40:21,186 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 17:40:21,187 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 17:40:21,200 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 17:40:21,201 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 17:40:21,202 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 17:40:21,203 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 17:40:21,205 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 17:40:21,207 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 17:40:21,208 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 17:40:21,209 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 17:40:21,210 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 17:40:21,211 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 17:40:21,212 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 17:40:21,213 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 17:40:21,214 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 17:40:21,215 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 17:40:21,217 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 17:40:21,220 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 17:40:21,221 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 17:40:21,223 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 17:40:21,224 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 17:40:21,227 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 17:40:21,227 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 17:40:21,227 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 17:40:21,228 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 17:40:21,230 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 17:40:21,231 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 17:40:21,231 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 17:40:21,233 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 17:40:21,233 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 17:40:21,234 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 17:40:21,234 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 17:40:21,235 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 17:40:21,236 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 17:40:21,237 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 17:40:21,238 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 17:40:21,254 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 17:40:21,254 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 17:40:21,255 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 17:40:21,255 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 17:40:21,256 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 17:40:21,256 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 17:40:21,256 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 17:40:21,256 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 17:40:21,256 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 17:40:21,256 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 17:40:21,258 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 17:40:21,258 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 17:40:21,258 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 17:40:21,258 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 17:40:21,258 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 17:40:21,259 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 17:40:21,259 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 17:40:21,260 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 17:40:21,260 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 17:40:21,260 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 17:40:21,260 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 17:40:21,260 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 17:40:21,260 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 17:40:21,261 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 17:40:21,261 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 17:40:21,261 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 17:40:21,261 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 17:40:21,261 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 17:40:21,262 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 17:40:21,262 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 17:40:21,262 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 17:40:21,262 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 17:40:21,262 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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 -> 5cdc4d12f446be57385f35c672efbdd6980b00fa [2018-11-28 17:40:21,303 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 17:40:21,320 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 17:40:21,325 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 17:40:21,326 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 17:40:21,327 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 17:40:21,328 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-benchs/inv_square_false-unreach-call_true-termination.c [2018-11-28 17:40:21,395 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42a76e187/6cd08c93fd6e4ba7bb0e9833b4267a93/FLAG6f4569218 [2018-11-28 17:40:21,826 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 17:40:21,827 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-benchs/inv_square_false-unreach-call_true-termination.c [2018-11-28 17:40:21,833 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42a76e187/6cd08c93fd6e4ba7bb0e9833b4267a93/FLAG6f4569218 [2018-11-28 17:40:22,209 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42a76e187/6cd08c93fd6e4ba7bb0e9833b4267a93 [2018-11-28 17:40:22,212 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 17:40:22,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 17:40:22,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 17:40:22,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 17:40:22,219 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 17:40:22,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:40:22" (1/1) ... [2018-11-28 17:40:22,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71aa32a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:22, skipping insertion in model container [2018-11-28 17:40:22,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:40:22" (1/1) ... [2018-11-28 17:40:22,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 17:40:22,253 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 17:40:22,470 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:40:22,484 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 17:40:22,507 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:40:22,528 INFO L195 MainTranslator]: Completed translation [2018-11-28 17:40:22,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:22 WrapperNode [2018-11-28 17:40:22,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 17:40:22,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 17:40:22,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 17:40:22,531 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 17:40:22,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:22" (1/1) ... [2018-11-28 17:40:22,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:22" (1/1) ... [2018-11-28 17:40:22,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 17:40:22,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 17:40:22,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 17:40:22,567 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 17:40:22,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:22" (1/1) ... [2018-11-28 17:40:22,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:22" (1/1) ... [2018-11-28 17:40:22,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:22" (1/1) ... [2018-11-28 17:40:22,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:22" (1/1) ... [2018-11-28 17:40:22,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:22" (1/1) ... [2018-11-28 17:40:22,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:22" (1/1) ... [2018-11-28 17:40:22,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:22" (1/1) ... [2018-11-28 17:40:22,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 17:40:22,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 17:40:22,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 17:40:22,613 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 17:40:22,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:22" (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 [2018-11-28 17:40:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 17:40:22,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 17:40:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 17:40:22,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 17:40:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 17:40:22,757 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 17:40:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 17:40:22,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 17:40:23,973 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 17:40:23,974 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 17:40:23,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:40:23 BoogieIcfgContainer [2018-11-28 17:40:23,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 17:40:23,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 17:40:23,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 17:40:23,979 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 17:40:23,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:40:22" (1/3) ... [2018-11-28 17:40:23,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677e80af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:40:23, skipping insertion in model container [2018-11-28 17:40:23,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:22" (2/3) ... [2018-11-28 17:40:23,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677e80af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:40:23, skipping insertion in model container [2018-11-28 17:40:23,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:40:23" (3/3) ... [2018-11-28 17:40:23,983 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_square_false-unreach-call_true-termination.c [2018-11-28 17:40:23,994 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 17:40:24,002 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 17:40:24,021 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 17:40:24,054 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 17:40:24,055 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 17:40:24,055 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 17:40:24,055 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 17:40:24,056 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 17:40:24,056 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 17:40:24,056 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 17:40:24,056 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 17:40:24,056 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 17:40:24,076 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-28 17:40:24,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 17:40:24,084 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:40:24,085 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:40:24,087 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:40:24,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:40:24,094 INFO L82 PathProgramCache]: Analyzing trace with hash 697060158, now seen corresponding path program 1 times [2018-11-28 17:40:24,099 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:40:24,100 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-11-28 17:40:24,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:40:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 17:40:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 17:40:24,298 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 17:40:24,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:40:24 BoogieIcfgContainer [2018-11-28 17:40:24,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 17:40:24,360 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 17:40:24,360 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 17:40:24,360 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 17:40:24,364 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:40:23" (3/4) ... [2018-11-28 17:40:24,371 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 17:40:24,440 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 17:40:24,441 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 17:40:24,442 INFO L168 Benchmark]: Toolchain (without parser) took 2229.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -110.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:24,444 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:24,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.63 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 17:40:24,446 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.73 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:24,447 INFO L168 Benchmark]: Boogie Preprocessor took 45.57 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:24,448 INFO L168 Benchmark]: RCFGBuilder took 1362.13 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -141.4 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2018-11-28 17:40:24,449 INFO L168 Benchmark]: TraceAbstraction took 383.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-11-28 17:40:24,450 INFO L168 Benchmark]: Witness Printer took 81.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-28 17:40:24,467 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 314.63 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 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 35.73 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.57 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1362.13 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -141.4 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 383.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * Witness Printer took 81.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] float x, y, z; [L14] x = __VERIFIER_nondet_float() [L17] COND TRUE x != 0.f [L18] y = x * x VAL [x=0.000000000000000000000000000000000000000000001401298464324817, y=0.0] [L19] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...