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/terminator_02_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 12:05:06,077 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 12:05:06,082 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 12:05:06,095 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 12:05:06,095 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 12:05:06,096 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 12:05:06,097 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 12:05:06,099 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 12:05:06,101 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 12:05:06,102 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 12:05:06,103 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 12:05:06,103 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 12:05:06,104 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 12:05:06,105 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 12:05:06,106 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 12:05:06,107 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 12:05:06,108 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 12:05:06,110 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 12:05:06,112 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 12:05:06,114 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 12:05:06,115 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 12:05:06,116 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 12:05:06,119 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 12:05:06,119 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 12:05:06,119 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 12:05:06,120 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 12:05:06,121 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 12:05:06,122 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 12:05:06,123 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 12:05:06,124 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 12:05:06,124 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 12:05:06,125 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 12:05:06,125 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 12:05:06,126 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 12:05:06,127 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 12:05:06,127 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 12:05:06,130 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 12:05:06,146 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 12:05:06,146 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 12:05:06,147 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 12:05:06,147 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 12:05:06,147 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 12:05:06,147 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 12:05:06,148 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 12:05:06,148 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 12:05:06,148 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 12:05:06,148 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 12:05:06,148 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 12:05:06,149 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 12:05:06,149 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 12:05:06,149 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 12:05:06,150 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 12:05:06,150 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 12:05:06,150 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 12:05:06,150 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 12:05:06,150 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 12:05:06,151 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 12:05:06,151 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 12:05:06,151 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 12:05:06,151 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 12:05:06,152 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 12:05:06,152 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 12:05:06,152 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 12:05:06,152 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 12:05:06,152 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 12:05:06,153 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 12:05:06,153 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 12:05:06,153 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 12:05:06,153 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 12:05:06,153 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 12:05:06,154 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 12:05:06,198 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 12:05:06,217 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 12:05:06,221 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 12:05:06,222 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 12:05:06,223 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 12:05:06,224 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/terminator_02_false-unreach-call_true-termination.i [2018-10-24 12:05:06,297 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f76bac869/688abe207ef745899dcdf87b1dd7c2da/FLAG746a9c2b8 [2018-10-24 12:05:06,706 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 12:05:06,707 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02_false-unreach-call_true-termination.i [2018-10-24 12:05:06,715 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f76bac869/688abe207ef745899dcdf87b1dd7c2da/FLAG746a9c2b8 [2018-10-24 12:05:06,734 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f76bac869/688abe207ef745899dcdf87b1dd7c2da [2018-10-24 12:05:06,745 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 12:05:06,747 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 12:05:06,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 12:05:06,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 12:05:06,753 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 12:05:06,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:05:06" (1/1) ... [2018-10-24 12:05:06,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72305746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:06, skipping insertion in model container [2018-10-24 12:05:06,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:05:06" (1/1) ... [2018-10-24 12:05:06,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 12:05:06,797 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 12:05:07,051 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:05:07,056 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 12:05:07,079 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:05:07,099 INFO L193 MainTranslator]: Completed translation [2018-10-24 12:05:07,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:07 WrapperNode [2018-10-24 12:05:07,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 12:05:07,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 12:05:07,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 12:05:07,102 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 12:05:07,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:07" (1/1) ... [2018-10-24 12:05:07,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:07" (1/1) ... [2018-10-24 12:05:07,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 12:05:07,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 12:05:07,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 12:05:07,130 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 12:05:07,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:07" (1/1) ... [2018-10-24 12:05:07,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:07" (1/1) ... [2018-10-24 12:05:07,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:07" (1/1) ... [2018-10-24 12:05:07,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:07" (1/1) ... [2018-10-24 12:05:07,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:07" (1/1) ... [2018-10-24 12:05:07,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:07" (1/1) ... [2018-10-24 12:05:07,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:07" (1/1) ... [2018-10-24 12:05:07,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 12:05:07,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 12:05:07,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 12:05:07,158 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 12:05:07,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:07" (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 12:05:07,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 12:05:07,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 12:05:07,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 12:05:07,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 12:05:07,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 12:05:07,332 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 12:05:07,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-24 12:05:07,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-24 12:05:07,627 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 12:05:07,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:05:07 BoogieIcfgContainer [2018-10-24 12:05:07,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 12:05:07,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 12:05:07,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 12:05:07,644 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 12:05:07,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:05:06" (1/3) ... [2018-10-24 12:05:07,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4d2dc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:05:07, skipping insertion in model container [2018-10-24 12:05:07,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:07" (2/3) ... [2018-10-24 12:05:07,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4d2dc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:05:07, skipping insertion in model container [2018-10-24 12:05:07,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:05:07" (3/3) ... [2018-10-24 12:05:07,655 INFO L112 eAbstractionObserver]: Analyzing ICFG terminator_02_false-unreach-call_true-termination.i [2018-10-24 12:05:07,667 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 12:05:07,679 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 12:05:07,699 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 12:05:07,751 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 12:05:07,751 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 12:05:07,751 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 12:05:07,751 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 12:05:07,751 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 12:05:07,752 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 12:05:07,752 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 12:05:07,752 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 12:05:07,772 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-10-24 12:05:07,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-24 12:05:07,779 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:05:07,780 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:05:07,782 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:05:07,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:05:07,788 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2018-10-24 12:05:07,791 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:05:07,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:07,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:05:07,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:07,845 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:05:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:05:07,913 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 12:05:07,916 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:05:07,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 12:05:07,917 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:05:07,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 12:05:07,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 12:05:07,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 12:05:07,939 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-10-24 12:05:07,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:05:07,964 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-10-24 12:05:07,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 12:05:07,965 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-24 12:05:07,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:05:07,975 INFO L225 Difference]: With dead ends: 32 [2018-10-24 12:05:07,976 INFO L226 Difference]: Without dead ends: 13 [2018-10-24 12:05:07,979 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 12:05:07,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-24 12:05:08,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-24 12:05:08,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-24 12:05:08,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-10-24 12:05:08,016 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-10-24 12:05:08,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:05:08,017 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-10-24 12:05:08,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 12:05:08,017 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-10-24 12:05:08,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-24 12:05:08,018 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:05:08,018 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:05:08,018 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:05:08,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:05:08,019 INFO L82 PathProgramCache]: Analyzing trace with hash -717461825, now seen corresponding path program 1 times [2018-10-24 12:05:08,019 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:05:08,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:08,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:05:08,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:05:08,021 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:05:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-24 12:05:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-24 12:05:08,064 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-24 12:05:08,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:05:08 BoogieIcfgContainer [2018-10-24 12:05:08,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 12:05:08,094 INFO L168 Benchmark]: Toolchain (without parser) took 1347.99 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -767.5 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2018-10-24 12:05:08,096 INFO L168 Benchmark]: CDTParser took 0.49 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 12:05:08,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.82 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 12:05:08,098 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.01 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 12:05:08,098 INFO L168 Benchmark]: Boogie Preprocessor took 27.20 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 12:05:08,099 INFO L168 Benchmark]: RCFGBuilder took 471.43 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -821.8 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-10-24 12:05:08,100 INFO L168 Benchmark]: TraceAbstraction took 463.06 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: 43.8 MB). Peak memory consumption was 43.8 MB. Max. memory is 7.1 GB. [2018-10-24 12:05:08,105 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 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 351.82 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 28.01 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 27.20 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 471.43 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -821.8 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 463.06 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: 43.8 MB). Peak memory consumption was 43.8 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: [L14] int x=__VERIFIER_nondet_int(); [L15] int y=__VERIFIER_nondet_int(); [L16] int z=__VERIFIER_nondet_int(); [L18] COND FALSE !(x<100 && 100