java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/while_infinite_loop_2_true-unreach-call_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 22:40:12,038 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 22:40:12,040 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 22:40:12,052 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 22:40:12,053 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 22:40:12,054 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 22:40:12,055 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 22:40:12,057 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 22:40:12,059 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 22:40:12,060 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 22:40:12,061 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 22:40:12,061 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 22:40:12,062 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 22:40:12,063 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 22:40:12,064 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 22:40:12,065 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 22:40:12,066 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 22:40:12,068 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 22:40:12,070 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 22:40:12,071 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 22:40:12,072 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 22:40:12,073 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 22:40:12,076 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 22:40:12,076 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 22:40:12,076 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 22:40:12,077 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 22:40:12,078 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 22:40:12,079 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 22:40:12,080 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 22:40:12,081 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 22:40:12,081 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 22:40:12,082 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 22:40:12,082 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 22:40:12,082 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 22:40:12,083 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 22:40:12,084 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 22:40:12,084 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 22:40:12,099 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 22:40:12,100 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 22:40:12,100 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 22:40:12,101 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 22:40:12,101 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 22:40:12,101 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 22:40:12,102 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 22:40:12,102 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 22:40:12,102 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 22:40:12,102 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 22:40:12,102 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 22:40:12,103 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 22:40:12,103 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 22:40:12,103 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 22:40:12,103 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 22:40:12,103 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 22:40:12,104 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 22:40:12,104 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 22:40:12,104 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 22:40:12,104 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:40:12,104 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 22:40:12,105 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 22:40:12,105 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 22:40:12,105 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 22:40:12,105 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 22:40:12,105 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 22:40:12,106 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 22:40:12,106 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 22:40:12,155 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 22:40:12,169 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 22:40:12,174 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 22:40:12,176 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 22:40:12,176 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 22:40:12,177 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_2_true-unreach-call_false-termination.i [2018-11-06 22:40:12,239 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9bc97d3b/005799a8b05e45d880562b38964df7e4/FLAGabd27fcc3 [2018-11-06 22:40:12,715 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 22:40:12,717 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_2_true-unreach-call_false-termination.i [2018-11-06 22:40:12,723 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9bc97d3b/005799a8b05e45d880562b38964df7e4/FLAGabd27fcc3 [2018-11-06 22:40:12,736 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9bc97d3b/005799a8b05e45d880562b38964df7e4 [2018-11-06 22:40:12,746 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 22:40:12,747 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 22:40:12,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 22:40:12,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 22:40:12,753 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 22:40:12,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:40:12" (1/1) ... [2018-11-06 22:40:12,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a84e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:12, skipping insertion in model container [2018-11-06 22:40:12,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:40:12" (1/1) ... [2018-11-06 22:40:12,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 22:40:12,791 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 22:40:12,970 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:40:12,975 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 22:40:12,992 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:40:13,009 INFO L193 MainTranslator]: Completed translation [2018-11-06 22:40:13,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:13 WrapperNode [2018-11-06 22:40:13,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 22:40:13,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 22:40:13,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 22:40:13,011 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 22:40:13,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:13" (1/1) ... [2018-11-06 22:40:13,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:13" (1/1) ... [2018-11-06 22:40:13,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 22:40:13,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 22:40:13,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 22:40:13,045 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 22:40:13,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:13" (1/1) ... [2018-11-06 22:40:13,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:13" (1/1) ... [2018-11-06 22:40:13,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:13" (1/1) ... [2018-11-06 22:40:13,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:13" (1/1) ... [2018-11-06 22:40:13,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:13" (1/1) ... [2018-11-06 22:40:13,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:13" (1/1) ... [2018-11-06 22:40:13,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:13" (1/1) ... [2018-11-06 22:40:13,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 22:40:13,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 22:40:13,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 22:40:13,063 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 22:40:13,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:40:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 22:40:13,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 22:40:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-06 22:40:13,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-06 22:40:13,336 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 22:40:13,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:40:13 BoogieIcfgContainer [2018-11-06 22:40:13,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 22:40:13,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 22:40:13,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 22:40:13,341 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 22:40:13,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:40:12" (1/3) ... [2018-11-06 22:40:13,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54557dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:40:13, skipping insertion in model container [2018-11-06 22:40:13,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:13" (2/3) ... [2018-11-06 22:40:13,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54557dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:40:13, skipping insertion in model container [2018-11-06 22:40:13,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:40:13" (3/3) ... [2018-11-06 22:40:13,345 INFO L112 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_2_true-unreach-call_false-termination.i [2018-11-06 22:40:13,355 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 22:40:13,363 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 22:40:13,378 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 22:40:13,409 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 22:40:13,410 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 22:40:13,410 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 22:40:13,410 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 22:40:13,410 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 22:40:13,410 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 22:40:13,410 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 22:40:13,410 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 22:40:13,410 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 22:40:13,427 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2018-11-06 22:40:13,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-06 22:40:13,432 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:40:13,433 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:40:13,437 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:40:13,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:40:13,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1814955297, now seen corresponding path program 1 times [2018-11-06 22:40:13,446 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:40:13,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:40:13,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:40:13,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:40:13,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:40:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:40:13,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:40:13,552 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:40:13,552 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 22:40:13,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-06 22:40:13,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-06 22:40:13,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-06 22:40:13,575 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2018-11-06 22:40:13,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:40:13,598 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2018-11-06 22:40:13,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-06 22:40:13,600 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2018-11-06 22:40:13,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:40:13,608 INFO L225 Difference]: With dead ends: 24 [2018-11-06 22:40:13,608 INFO L226 Difference]: Without dead ends: 11 [2018-11-06 22:40:13,612 INFO L604 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 [2018-11-06 22:40:13,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-11-06 22:40:13,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-06 22:40:13,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-06 22:40:13,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-11-06 22:40:13,643 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2018-11-06 22:40:13,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:40:13,644 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-11-06 22:40:13,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-06 22:40:13,644 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-11-06 22:40:13,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-06 22:40:13,645 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:40:13,645 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:40:13,645 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:40:13,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:40:13,646 INFO L82 PathProgramCache]: Analyzing trace with hash 151384320, now seen corresponding path program 1 times [2018-11-06 22:40:13,646 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:40:13,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:40:13,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:40:13,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:40:13,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:40:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:40:13,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:40:13,845 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:40:13,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 22:40:13,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 22:40:13,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 22:40:13,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:40:13,848 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 5 states. [2018-11-06 22:40:13,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:40:13,929 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-11-06 22:40:13,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 22:40:13,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-11-06 22:40:13,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:40:13,932 INFO L225 Difference]: With dead ends: 11 [2018-11-06 22:40:13,932 INFO L226 Difference]: Without dead ends: 0 [2018-11-06 22:40:13,933 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-06 22:40:13,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-06 22:40:13,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-06 22:40:13,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-06 22:40:13,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-06 22:40:13,934 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-11-06 22:40:13,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:40:13,935 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-06 22:40:13,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 22:40:13,935 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-06 22:40:13,935 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-06 22:40:13,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-06 22:40:14,006 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-06 22:40:14,006 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-11-06 22:40:14,006 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-11-06 22:40:14,006 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-06 22:40:14,006 INFO L425 ceAbstractionStarter]: For program point L17(lines 9 18) no Hoare annotation was computed. [2018-11-06 22:40:14,007 INFO L421 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: (= ULTIMATE.start_main_~x~0 0) [2018-11-06 22:40:14,007 INFO L421 ceAbstractionStarter]: At program point L14-1(lines 12 15) the Hoare annotation is: (= ULTIMATE.start_main_~x~0 0) [2018-11-06 22:40:14,007 INFO L425 ceAbstractionStarter]: For program point L12-1(lines 12 15) no Hoare annotation was computed. [2018-11-06 22:40:14,008 INFO L421 ceAbstractionStarter]: At program point L12-3(lines 12 15) the Hoare annotation is: false [2018-11-06 22:40:14,008 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-06 22:40:14,008 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-06 22:40:14,008 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-06 22:40:14,008 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-06 22:40:14,009 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-06 22:40:14,009 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-06 22:40:14,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:40:14 BoogieIcfgContainer [2018-11-06 22:40:14,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 22:40:14,024 INFO L168 Benchmark]: Toolchain (without parser) took 1277.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -768.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 22:40:14,026 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-11-06 22:40:14,027 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.39 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. [2018-11-06 22:40:14,028 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.23 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. [2018-11-06 22:40:14,029 INFO L168 Benchmark]: Boogie Preprocessor took 17.90 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. [2018-11-06 22:40:14,029 INFO L168 Benchmark]: RCFGBuilder took 274.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -808.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-11-06 22:40:14,031 INFO L168 Benchmark]: TraceAbstraction took 684.97 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: 29.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. [2018-11-06 22:40:14,036 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 261.39 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 34.23 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 17.90 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 274.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -808.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 684.97 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: 29.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: x == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 5 SDslu, 12 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 6 PreInvPairs, 8 NumberOfFragments, 8 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 155 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...