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-EXP.epf -i ../../../trunk/examples/svcomp/loops/trex01_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 09:02:07,103 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 09:02:07,106 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 09:02:07,123 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 09:02:07,123 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 09:02:07,126 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 09:02:07,128 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 09:02:07,130 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 09:02:07,132 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 09:02:07,136 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 09:02:07,138 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 09:02:07,139 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 09:02:07,140 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 09:02:07,141 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 09:02:07,142 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 09:02:07,145 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 09:02:07,147 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 09:02:07,148 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 09:02:07,159 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 09:02:07,161 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 09:02:07,162 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 09:02:07,164 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 09:02:07,168 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 09:02:07,168 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 09:02:07,169 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 09:02:07,170 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 09:02:07,171 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 09:02:07,172 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 09:02:07,173 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 09:02:07,175 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 09:02:07,175 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 09:02:07,176 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 09:02:07,178 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 09:02:07,193 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 09:02:07,193 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 09:02:07,194 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 09:02:07,194 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 09:02:07,194 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 09:02:07,194 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 09:02:07,195 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 09:02:07,195 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 09:02:07,195 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 09:02:07,195 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 09:02:07,195 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 09:02:07,196 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 09:02:07,196 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 09:02:07,196 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 09:02:07,197 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 09:02:07,197 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 09:02:07,197 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 09:02:07,197 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 09:02:07,197 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 09:02:07,198 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 09:02:07,198 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 09:02:07,198 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 09:02:07,198 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 09:02:07,198 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 09:02:07,198 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 09:02:07,199 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 09:02:07,199 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 09:02:07,199 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 09:02:07,199 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 09:02:07,199 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 09:02:07,200 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 09:02:07,200 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 09:02:07,200 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 09:02:07,200 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 09:02:07,200 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 09:02:07,200 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 09:02:07,244 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 09:02:07,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 09:02:07,263 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 09:02:07,265 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 09:02:07,265 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 09:02:07,267 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/trex01_false-unreach-call_true-termination.i [2018-10-27 09:02:07,336 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/374ce359d/ff85f9e4e12a48d0bdb9214bb6c99e7d/FLAGfa317e1ec [2018-10-27 09:02:07,766 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 09:02:07,766 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01_false-unreach-call_true-termination.i [2018-10-27 09:02:07,773 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/374ce359d/ff85f9e4e12a48d0bdb9214bb6c99e7d/FLAGfa317e1ec [2018-10-27 09:02:07,789 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/374ce359d/ff85f9e4e12a48d0bdb9214bb6c99e7d [2018-10-27 09:02:07,800 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 09:02:07,802 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 09:02:07,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 09:02:07,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 09:02:07,807 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 09:02:07,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 09:02:07" (1/1) ... [2018-10-27 09:02:07,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f637f1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:02:07, skipping insertion in model container [2018-10-27 09:02:07,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 09:02:07" (1/1) ... [2018-10-27 09:02:07,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 09:02:07,846 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 09:02:08,039 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 09:02:08,044 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 09:02:08,073 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 09:02:08,097 INFO L193 MainTranslator]: Completed translation [2018-10-27 09:02:08,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:02:08 WrapperNode [2018-10-27 09:02:08,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 09:02:08,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 09:02:08,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 09:02:08,099 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 09:02:08,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:02:08" (1/1) ... [2018-10-27 09:02:08,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:02:08" (1/1) ... [2018-10-27 09:02:08,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 09:02:08,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 09:02:08,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 09:02:08,126 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 09:02:08,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:02:08" (1/1) ... [2018-10-27 09:02:08,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:02:08" (1/1) ... [2018-10-27 09:02:08,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:02:08" (1/1) ... [2018-10-27 09:02:08,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:02:08" (1/1) ... [2018-10-27 09:02:08,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:02:08" (1/1) ... [2018-10-27 09:02:08,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:02:08" (1/1) ... [2018-10-27 09:02:08,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:02:08" (1/1) ... [2018-10-27 09:02:08,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 09:02:08,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 09:02:08,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 09:02:08,152 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 09:02:08,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:02:08" (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 [2018-10-27 09:02:08,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 09:02:08,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 09:02:08,293 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-10-27 09:02:08,293 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-10-27 09:02:08,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 09:02:08,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 09:02:08,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 09:02:08,294 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 09:02:08,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-27 09:02:08,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-27 09:02:08,726 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 09:02:08,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 09:02:08 BoogieIcfgContainer [2018-10-27 09:02:08,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 09:02:08,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 09:02:08,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 09:02:08,737 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 09:02:08,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 09:02:07" (1/3) ... [2018-10-27 09:02:08,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a80cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 09:02:08, skipping insertion in model container [2018-10-27 09:02:08,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:02:08" (2/3) ... [2018-10-27 09:02:08,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a80cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 09:02:08, skipping insertion in model container [2018-10-27 09:02:08,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 09:02:08" (3/3) ... [2018-10-27 09:02:08,742 INFO L112 eAbstractionObserver]: Analyzing ICFG trex01_false-unreach-call_true-termination.i [2018-10-27 09:02:08,753 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 09:02:08,767 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 09:02:08,785 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 09:02:08,828 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 09:02:08,828 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 09:02:08,828 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 09:02:08,829 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 09:02:08,829 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 09:02:08,829 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 09:02:08,829 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 09:02:08,829 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 09:02:08,850 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-10-27 09:02:08,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-27 09:02:08,857 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 09:02:08,858 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 09:02:08,861 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 09:02:08,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 09:02:08,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1007968315, now seen corresponding path program 1 times [2018-10-27 09:02:08,869 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 09:02:08,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:02:08,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 09:02:08,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:02:08,916 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 09:02:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 09:02:09,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 09:02:09,003 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 09:02:09,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 09:02:09,004 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 09:02:09,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-27 09:02:09,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 09:02:09,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 09:02:09,029 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2018-10-27 09:02:09,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 09:02:09,057 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2018-10-27 09:02:09,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 09:02:09,059 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-10-27 09:02:09,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 09:02:09,069 INFO L225 Difference]: With dead ends: 48 [2018-10-27 09:02:09,070 INFO L226 Difference]: Without dead ends: 17 [2018-10-27 09:02:09,073 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 [2018-10-27 09:02:09,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-27 09:02:09,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-27 09:02:09,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-27 09:02:09,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-10-27 09:02:09,108 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2018-10-27 09:02:09,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 09:02:09,109 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-10-27 09:02:09,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-27 09:02:09,110 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-10-27 09:02:09,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-27 09:02:09,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 09:02:09,111 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 09:02:09,111 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 09:02:09,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 09:02:09,112 INFO L82 PathProgramCache]: Analyzing trace with hash 903668168, now seen corresponding path program 1 times [2018-10-27 09:02:09,112 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 09:02:09,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:02:09,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 09:02:09,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:02:09,114 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 09:02:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 09:02:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 09:02:09,169 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-27 09:02:09,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 09:02:09 BoogieIcfgContainer [2018-10-27 09:02:09,196 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 09:02:09,197 INFO L168 Benchmark]: Toolchain (without parser) took 1396.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 743.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -751.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 09:02:09,199 INFO L168 Benchmark]: CDTParser took 0.27 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. [2018-10-27 09:02:09,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.22 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. [2018-10-27 09:02:09,201 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.66 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. [2018-10-27 09:02:09,202 INFO L168 Benchmark]: Boogie Preprocessor took 25.48 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. [2018-10-27 09:02:09,202 INFO L168 Benchmark]: RCFGBuilder took 575.47 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 743.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.7 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2018-10-27 09:02:09,203 INFO L168 Benchmark]: TraceAbstraction took 463.19 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: 30.3 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. [2018-10-27 09:02:09,208 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 295.22 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 26.66 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 25.48 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 575.47 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 743.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.7 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 463.19 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: 30.3 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L31] _Bool c = __VERIFIER_nondet_bool(); [L32] COND TRUE \read(c) VAL [c=1] [L33] CALL f(1) VAL [\old(d)=1] [L11] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L11] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L11] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L11] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; VAL [\old(d)=1, d=1, k=0, x=0, y=0, z=1] [L12] COND FALSE !(!(k <= 1073741823)) VAL [\old(d)=1, d=1, k=0, x=0, y=0, z=1] [L15] COND FALSE !(z < k) VAL [\old(d)=1, d=1, k=0, x=0, y=0, z=1] [L16] CALL __VERIFIER_assert(z>=2) VAL [\old(cond)=0] [L3] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 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=30occurred 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, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 169 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...