/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 40ef5092 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 ../../../trunk/examples/svcomp/float-benchs/float_int_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 3a552ed0b53624bc27612451ed4207d0101db39b ........................................................................................................................................................................................................................ 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 ../../../trunk/examples/svcomp/float-benchs/float_int_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 3a552ed0b53624bc27612451ed4207d0101db39b ........................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-40ef509 [2018-09-20 13:48:53,532 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 13:48:53,535 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 13:48:53,553 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 13:48:53,553 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 13:48:53,555 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 13:48:53,557 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 13:48:53,560 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 13:48:53,564 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 13:48:53,566 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 13:48:53,569 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 13:48:53,570 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 13:48:53,571 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 13:48:53,574 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 13:48:53,581 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 13:48:53,585 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 13:48:53,587 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 13:48:53,591 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 13:48:53,594 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 13:48:53,597 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 13:48:53,600 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 13:48:53,603 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 13:48:53,608 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 13:48:53,610 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 13:48:53,610 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 13:48:53,611 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 13:48:53,612 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 13:48:53,612 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 13:48:53,615 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 13:48:53,617 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 13:48:53,619 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 13:48:53,619 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 13:48:53,620 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 13:48:53,620 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 13:48:53,623 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 13:48:53,626 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 13:48:53,627 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 13:48:53,655 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 13:48:53,656 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 13:48:53,657 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 13:48:53,658 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 13:48:53,659 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 13:48:53,660 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 13:48:53,660 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 13:48:53,661 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 13:48:53,661 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 13:48:53,661 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 13:48:53,661 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 13:48:53,661 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 13:48:53,662 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 13:48:53,663 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 13:48:53,663 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 13:48:53,663 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 13:48:53,663 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 13:48:53,664 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 13:48:53,664 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 13:48:53,664 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 13:48:53,664 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 13:48:53,664 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 13:48:53,666 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 13:48:53,667 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 13:48:53,667 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 13:48:53,667 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 13:48:53,667 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 13:48:53,667 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 13:48:53,668 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 13:48:53,668 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 -> 3a552ed0b53624bc27612451ed4207d0101db39b [2018-09-20 13:48:53,757 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 13:48:53,777 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 13:48:53,781 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 13:48:53,783 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 13:48:53,783 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 13:48:53,784 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-09-20 13:48:54,142 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b56c99d3/63c63ec6e5b44637b2d7b89ef8508b25/FLAGbe826f8c9 [2018-09-20 13:48:54,298 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 13:48:54,299 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-09-20 13:48:54,307 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b56c99d3/63c63ec6e5b44637b2d7b89ef8508b25/FLAGbe826f8c9 [2018-09-20 13:48:54,325 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b56c99d3/63c63ec6e5b44637b2d7b89ef8508b25 [2018-09-20 13:48:54,329 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 13:48:54,333 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 13:48:54,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 13:48:54,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 13:48:54,342 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 13:48:54,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:48:54" (1/1) ... [2018-09-20 13:48:54,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23e7abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:48:54, skipping insertion in model container [2018-09-20 13:48:54,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:48:54" (1/1) ... [2018-09-20 13:48:54,360 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 13:48:54,552 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:48:54,574 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 13:48:54,580 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:48:54,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:48:54 WrapperNode [2018-09-20 13:48:54,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 13:48:54,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 13:48:54,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 13:48:54,604 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 13:48:54,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:48:54" (1/1) ... [2018-09-20 13:48:54,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:48:54" (1/1) ... [2018-09-20 13:48:54,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:48:54" (1/1) ... [2018-09-20 13:48:54,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:48:54" (1/1) ... [2018-09-20 13:48:54,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:48:54" (1/1) ... [2018-09-20 13:48:54,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:48:54" (1/1) ... [2018-09-20 13:48:54,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:48:54" (1/1) ... [2018-09-20 13:48:54,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 13:48:54,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 13:48:54,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 13:48:54,637 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 13:48:54,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:48:54" (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 [2018-09-20 13:48:54,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 13:48:54,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 13:48:54,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-20 13:48:54,718 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 13:48:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 13:48:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-09-20 13:48:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-09-20 13:48:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-20 13:48:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 13:48:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 13:48:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 13:48:54,982 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 13:48:54,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:48:54 BoogieIcfgContainer [2018-09-20 13:48:54,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 13:48:54,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 13:48:54,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 13:48:54,989 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 13:48:54,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:48:54" (1/3) ... [2018-09-20 13:48:54,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1a0ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:48:54, skipping insertion in model container [2018-09-20 13:48:54,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:48:54" (2/3) ... [2018-09-20 13:48:54,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1a0ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:48:54, skipping insertion in model container [2018-09-20 13:48:54,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:48:54" (3/3) ... [2018-09-20 13:48:54,994 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square_false-unreach-call_true-termination.c [2018-09-20 13:48:55,006 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 13:48:55,015 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 13:48:55,064 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 13:48:55,065 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 13:48:55,065 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 13:48:55,066 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 13:48:55,066 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 13:48:55,066 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 13:48:55,066 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 13:48:55,066 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 13:48:55,066 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 13:48:55,086 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-09-20 13:48:55,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-09-20 13:48:55,093 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 13:48:55,094 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 13:48:55,097 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 13:48:55,102 INFO L82 PathProgramCache]: Analyzing trace with hash 997393992, now seen corresponding path program 1 times [2018-09-20 13:48:55,105 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 13:48:55,106 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 13:48:55,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 13:48:55,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 13:48:55,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 13:48:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:48:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:48:55,229 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 13:48:55,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:48:55 BoogieIcfgContainer [2018-09-20 13:48:55,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 13:48:55,256 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 13:48:55,257 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 13:48:55,257 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 13:48:55,257 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:48:54" (3/4) ... [2018-09-20 13:48:55,261 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-20 13:48:55,261 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 13:48:55,262 INFO L168 Benchmark]: Toolchain (without parser) took 932.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -165.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:48:55,265 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:48:55,266 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.31 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 13:48:55,267 INFO L168 Benchmark]: Boogie Preprocessor took 32.46 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:48:55,269 INFO L168 Benchmark]: RCFGBuilder took 347.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -191.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. [2018-09-20 13:48:55,270 INFO L168 Benchmark]: TraceAbstraction took 270.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2018-09-20 13:48:55,272 INFO L168 Benchmark]: Witness Printer took 4.81 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. [2018-09-20 13:48:55,280 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 269.31 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.46 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 347.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -191.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 270.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * Witness Printer took 4.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 16. Possible FailurePath: [L10] int x; [L11] float y, z; [L13] x = __VERIFIER_nondet_int() [L16] y = x*x - 4.f VAL [x=0] [L17] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. UNSAFE Result, 0.1s 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=17occurred 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, 9 NumberOfCodeBlocks, 9 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 0.1.23-40ef509 [2018-09-20 13:48:57,684 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 13:48:57,686 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 13:48:57,698 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 13:48:57,699 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 13:48:57,700 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 13:48:57,702 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 13:48:57,704 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 13:48:57,706 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 13:48:57,707 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 13:48:57,708 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 13:48:57,708 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 13:48:57,710 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 13:48:57,711 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 13:48:57,712 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 13:48:57,713 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 13:48:57,715 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 13:48:57,717 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 13:48:57,719 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 13:48:57,721 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 13:48:57,722 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 13:48:57,724 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 13:48:57,727 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 13:48:57,727 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 13:48:57,727 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 13:48:57,728 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 13:48:57,730 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 13:48:57,731 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 13:48:57,732 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 13:48:57,733 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 13:48:57,733 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 13:48:57,734 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 13:48:57,735 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 13:48:57,735 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 13:48:57,737 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 13:48:57,737 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 13:48:57,738 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 13:48:57,761 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 13:48:57,761 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 13:48:57,762 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 13:48:57,762 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 13:48:57,763 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 13:48:57,763 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 13:48:57,764 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 13:48:57,764 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 13:48:57,764 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 13:48:57,764 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 13:48:57,765 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 13:48:57,765 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 13:48:57,765 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 13:48:57,765 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 13:48:57,767 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 13:48:57,767 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 13:48:57,767 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 13:48:57,767 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 13:48:57,768 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 13:48:57,769 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 13:48:57,769 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 13:48:57,769 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 13:48:57,770 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 13:48:57,770 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 13:48:57,771 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 13:48:57,771 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 13:48:57,771 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 13:48:57,771 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 13:48:57,771 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 13:48:57,771 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 13:48:57,772 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 13:48:57,772 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 -> 3a552ed0b53624bc27612451ed4207d0101db39b [2018-09-20 13:48:57,825 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 13:48:57,841 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 13:48:57,847 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 13:48:57,849 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 13:48:57,849 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 13:48:57,850 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-09-20 13:48:58,214 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61cd35d0d/951b1758ebca453e8adb19172c222e5b/FLAGc41c08cdd [2018-09-20 13:48:58,391 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 13:48:58,392 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-09-20 13:48:58,400 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61cd35d0d/951b1758ebca453e8adb19172c222e5b/FLAGc41c08cdd [2018-09-20 13:48:58,432 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61cd35d0d/951b1758ebca453e8adb19172c222e5b [2018-09-20 13:48:58,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 13:48:58,445 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 13:48:58,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 13:48:58,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 13:48:58,458 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 13:48:58,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:48:58" (1/1) ... [2018-09-20 13:48:58,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ebc31b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:48:58, skipping insertion in model container [2018-09-20 13:48:58,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:48:58" (1/1) ... [2018-09-20 13:48:58,477 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 13:48:58,681 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:48:58,702 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 13:48:58,708 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:48:58,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:48:58 WrapperNode [2018-09-20 13:48:58,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 13:48:58,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 13:48:58,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 13:48:58,725 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 13:48:58,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:48:58" (1/1) ... [2018-09-20 13:48:58,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:48:58" (1/1) ... [2018-09-20 13:48:58,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:48:58" (1/1) ... [2018-09-20 13:48:58,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:48:58" (1/1) ... [2018-09-20 13:48:58,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:48:58" (1/1) ... [2018-09-20 13:48:58,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:48:58" (1/1) ... [2018-09-20 13:48:58,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:48:58" (1/1) ... [2018-09-20 13:48:58,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 13:48:58,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 13:48:58,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 13:48:58,770 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 13:48:58,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:48:58" (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 [2018-09-20 13:48:58,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 13:48:58,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 13:48:58,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-20 13:48:58,848 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 13:48:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 13:48:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-09-20 13:48:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-09-20 13:48:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-20 13:48:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 13:48:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 13:48:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 13:49:00,391 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 13:49:00,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:49:00 BoogieIcfgContainer [2018-09-20 13:49:00,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 13:49:00,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 13:49:00,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 13:49:00,397 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 13:49:00,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:48:58" (1/3) ... [2018-09-20 13:49:00,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db0f998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:49:00, skipping insertion in model container [2018-09-20 13:49:00,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:48:58" (2/3) ... [2018-09-20 13:49:00,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db0f998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:49:00, skipping insertion in model container [2018-09-20 13:49:00,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:49:00" (3/3) ... [2018-09-20 13:49:00,402 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square_false-unreach-call_true-termination.c [2018-09-20 13:49:00,410 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 13:49:00,418 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 13:49:00,468 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 13:49:00,469 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 13:49:00,469 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 13:49:00,470 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 13:49:00,470 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 13:49:00,470 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 13:49:00,471 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 13:49:00,471 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 13:49:00,471 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 13:49:00,491 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-09-20 13:49:00,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-09-20 13:49:00,499 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 13:49:00,500 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 13:49:00,503 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 13:49:00,509 INFO L82 PathProgramCache]: Analyzing trace with hash 997393992, now seen corresponding path program 1 times [2018-09-20 13:49:00,514 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 13:49:00,515 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 [2018-09-20 13:49:00,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 13:49:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:49:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:49:00,797 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 13:49:00,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:49:00 BoogieIcfgContainer [2018-09-20 13:49:00,825 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 13:49:00,825 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 13:49:00,826 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 13:49:00,826 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 13:49:00,827 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:49:00" (3/4) ... [2018-09-20 13:49:00,829 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-09-20 13:49:00,873 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-20 13:49:00,873 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 13:49:00,874 INFO L168 Benchmark]: Toolchain (without parser) took 2434.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -158.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:49:00,876 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:49:00,877 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.25 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 13:49:00,878 INFO L168 Benchmark]: Boogie Preprocessor took 44.43 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:49:00,878 INFO L168 Benchmark]: RCFGBuilder took 1622.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -188.0 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2018-09-20 13:49:00,879 INFO L168 Benchmark]: TraceAbstraction took 431.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2018-09-20 13:49:00,880 INFO L168 Benchmark]: Witness Printer took 47.64 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. [2018-09-20 13:49:00,886 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 276.25 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.43 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1622.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -188.0 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 431.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * Witness Printer took 47.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int x; [L11] float y, z; [L13] x = __VERIFIER_nondet_int() [L16] y = x*x - 4.f VAL [x=2, y=0.0] [L17] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 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=17occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 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...