java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/loops/count_up_down_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 12:04:51,576 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 12:04:51,578 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 12:04:51,592 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 12:04:51,593 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 12:04:51,594 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 12:04:51,595 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 12:04:51,597 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 12:04:51,598 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 12:04:51,599 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 12:04:51,600 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 12:04:51,600 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 12:04:51,601 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 12:04:51,602 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 12:04:51,604 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 12:04:51,605 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 12:04:51,607 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 12:04:51,609 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 12:04:51,613 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 12:04:51,619 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 12:04:51,620 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 12:04:51,626 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 12:04:51,628 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 12:04:51,628 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 12:04:51,629 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 12:04:51,632 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 12:04:51,633 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 12:04:51,633 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 12:04:51,637 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 12:04:51,638 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 12:04:51,638 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 12:04:51,641 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 12:04:51,641 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 12:04:51,641 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 12:04:51,642 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 12:04:51,643 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 12:04:51,643 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 12:04:51,669 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 12:04:51,670 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 12:04:51,671 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 12:04:51,674 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 12:04:51,674 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 12:04:51,674 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 12:04:51,674 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 12:04:51,674 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 12:04:51,675 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 12:04:51,675 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 12:04:51,675 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 12:04:51,675 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 12:04:51,676 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 12:04:51,676 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 12:04:51,676 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 12:04:51,678 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 12:04:51,678 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 12:04:51,678 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 12:04:51,678 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 12:04:51,679 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 12:04:51,679 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 12:04:51,679 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 12:04:51,679 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 12:04:51,680 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 12:04:51,680 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 12:04:51,680 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 12:04:51,680 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 12:04:51,680 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 12:04:51,681 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 12:04:51,681 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 12:04:51,681 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 12:04:51,681 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 12:04:51,681 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 12:04:51,681 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 12:04:51,748 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 12:04:51,769 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 12:04:51,774 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 12:04:51,775 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 12:04:51,776 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 12:04:51,777 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/count_up_down_false-unreach-call_true-termination.i [2018-10-24 12:04:51,848 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/657407ac9/daf39d957ae04ab9ab8faec6963b24e7/FLAGca8057f6c [2018-10-24 12:04:52,265 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 12:04:52,266 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/count_up_down_false-unreach-call_true-termination.i [2018-10-24 12:04:52,273 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/657407ac9/daf39d957ae04ab9ab8faec6963b24e7/FLAGca8057f6c [2018-10-24 12:04:52,289 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/657407ac9/daf39d957ae04ab9ab8faec6963b24e7 [2018-10-24 12:04:52,303 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 12:04:52,305 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 12:04:52,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 12:04:52,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 12:04:52,310 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 12:04:52,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:04:52" (1/1) ... [2018-10-24 12:04:52,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb2140e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:04:52, skipping insertion in model container [2018-10-24 12:04:52,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:04:52" (1/1) ... [2018-10-24 12:04:52,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 12:04:52,347 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 12:04:52,532 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:04:52,536 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 12:04:52,554 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:04:52,571 INFO L193 MainTranslator]: Completed translation [2018-10-24 12:04:52,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:04:52 WrapperNode [2018-10-24 12:04:52,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 12:04:52,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 12:04:52,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 12:04:52,573 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 12:04:52,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:04:52" (1/1) ... [2018-10-24 12:04:52,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:04:52" (1/1) ... [2018-10-24 12:04:52,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 12:04:52,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 12:04:52,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 12:04:52,594 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 12:04:52,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:04:52" (1/1) ... [2018-10-24 12:04:52,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:04:52" (1/1) ... [2018-10-24 12:04:52,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:04:52" (1/1) ... [2018-10-24 12:04:52,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:04:52" (1/1) ... [2018-10-24 12:04:52,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:04:52" (1/1) ... [2018-10-24 12:04:52,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:04:52" (1/1) ... [2018-10-24 12:04:52,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:04:52" (1/1) ... [2018-10-24 12:04:52,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 12:04:52,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 12:04:52,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 12:04:52,616 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 12:04:52,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:04:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 12:04:52,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 12:04:52,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 12:04:52,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 12:04:52,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 12:04:52,688 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 12:04:52,689 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 12:04:52,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-24 12:04:52,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-24 12:04:52,993 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 12:04:52,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:04:52 BoogieIcfgContainer [2018-10-24 12:04:52,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 12:04:52,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 12:04:52,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 12:04:52,999 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 12:04:52,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:04:52" (1/3) ... [2018-10-24 12:04:53,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159cd504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:04:53, skipping insertion in model container [2018-10-24 12:04:53,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:04:52" (2/3) ... [2018-10-24 12:04:53,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159cd504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:04:53, skipping insertion in model container [2018-10-24 12:04:53,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:04:52" (3/3) ... [2018-10-24 12:04:53,003 INFO L112 eAbstractionObserver]: Analyzing ICFG count_up_down_false-unreach-call_true-termination.i [2018-10-24 12:04:53,011 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 12:04:53,018 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 12:04:53,032 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 12:04:53,066 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 12:04:53,067 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 12:04:53,067 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 12:04:53,067 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 12:04:53,067 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 12:04:53,067 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 12:04:53,067 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 12:04:53,068 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 12:04:53,086 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-10-24 12:04:53,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-24 12:04:53,093 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:04:53,094 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:04:53,096 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:04:53,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:04:53,102 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2018-10-24 12:04:53,104 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:04:53,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:04:53,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:04:53,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:04:53,159 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:04:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:04:53,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:04:53,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:04:53,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 12:04:53,230 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:04:53,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 12:04:53,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 12:04:53,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 12:04:53,255 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-10-24 12:04:53,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:04:53,279 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-10-24 12:04:53,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 12:04:53,281 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-24 12:04:53,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:04:53,291 INFO L225 Difference]: With dead ends: 29 [2018-10-24 12:04:53,291 INFO L226 Difference]: Without dead ends: 12 [2018-10-24 12:04:53,295 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 12:04:53,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-24 12:04:53,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-24 12:04:53,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-24 12:04:53,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-24 12:04:53,334 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-24 12:04:53,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:04:53,334 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-24 12:04:53,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 12:04:53,335 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-24 12:04:53,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-24 12:04:53,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:04:53,336 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:04:53,336 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:04:53,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:04:53,337 INFO L82 PathProgramCache]: Analyzing trace with hash -571410792, now seen corresponding path program 1 times [2018-10-24 12:04:53,337 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:04:53,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:04:53,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:04:53,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:04:53,339 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:04:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-24 12:04:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-24 12:04:53,393 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-24 12:04:53,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:04:53 BoogieIcfgContainer [2018-10-24 12:04:53,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 12:04:53,428 INFO L168 Benchmark]: Toolchain (without parser) took 1123.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -781.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 12:04:53,430 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 12:04:53,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-24 12:04:53,434 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.11 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 12:04:53,435 INFO L168 Benchmark]: Boogie Preprocessor took 22.14 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 12:04:53,436 INFO L168 Benchmark]: RCFGBuilder took 378.52 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -808.5 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-10-24 12:04:53,438 INFO L168 Benchmark]: TraceAbstraction took 430.35 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2018-10-24 12:04:53,445 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 266.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 20.11 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.14 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 378.52 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -808.5 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 430.35 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] unsigned int n = __VERIFIER_nondet_uint(); [L14] unsigned int x=n, y=0; VAL [n=0, x=0, y=0] [L15] COND FALSE !(x>0) VAL [n=0, x=0, y=0] [L20] CALL __VERIFIER_assert(y!=n) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 18 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...