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/eca-rers2012/Problem17_label32_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:43:52,776 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:43:52,782 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:43:52,801 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:43:52,802 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:43:52,803 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:43:52,805 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:43:52,808 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:43:52,809 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:43:52,813 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:43:52,814 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:43:52,814 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:43:52,817 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:43:52,818 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:43:52,819 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:43:52,829 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:43:52,830 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:43:52,833 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:43:52,836 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:43:52,840 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:43:52,841 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:43:52,843 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:43:52,850 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 21:43:52,850 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 21:43:52,850 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 21:43:52,851 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 21:43:52,853 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 21:43:52,853 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 21:43:52,855 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 21:43:52,856 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 21:43:52,856 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 21:43:52,858 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 21:43:52,861 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 21:43:52,885 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:43:52,885 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:43:52,886 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:43:52,886 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:43:52,888 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:43:52,888 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:43:52,889 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:43:52,889 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:43:52,889 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:43:52,889 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:43:52,890 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:43:52,890 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:43:52,890 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:43:52,890 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:43:52,890 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:43:52,891 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:43:52,891 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:43:52,891 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:43:52,892 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:43:52,892 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:43:52,892 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:43:52,892 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:43:52,892 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:43:52,893 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:43:52,893 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:43:52,893 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:43:52,893 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:43:52,894 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:43:52,938 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:43:52,954 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:43:52,958 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:43:52,959 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:43:52,960 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:43:52,961 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label32_true-unreach-call.c [2018-11-06 21:43:53,029 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b243bafdd/101a8a8493b0476085c236915038186e/FLAG4ae02d308 [2018-11-06 21:43:53,752 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:43:53,754 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label32_true-unreach-call.c [2018-11-06 21:43:53,781 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b243bafdd/101a8a8493b0476085c236915038186e/FLAG4ae02d308 [2018-11-06 21:43:53,803 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b243bafdd/101a8a8493b0476085c236915038186e [2018-11-06 21:43:53,815 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:43:53,817 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:43:53,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:43:53,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:43:53,824 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:43:53,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:43:53" (1/1) ... [2018-11-06 21:43:53,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193d11b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:53, skipping insertion in model container [2018-11-06 21:43:53,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:43:53" (1/1) ... [2018-11-06 21:43:53,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:43:53,992 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:43:54,959 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:43:54,964 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:43:55,388 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:43:55,414 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:43:55,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:55 WrapperNode [2018-11-06 21:43:55,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:43:55,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:43:55,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:43:55,418 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:43:55,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:55" (1/1) ... [2018-11-06 21:43:55,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:55" (1/1) ... [2018-11-06 21:43:55,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:43:55,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:43:55,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:43:55,934 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:43:55,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:55" (1/1) ... [2018-11-06 21:43:55,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:55" (1/1) ... [2018-11-06 21:43:55,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:55" (1/1) ... [2018-11-06 21:43:55,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:55" (1/1) ... [2018-11-06 21:43:56,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:55" (1/1) ... [2018-11-06 21:43:56,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:55" (1/1) ... [2018-11-06 21:43:56,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:55" (1/1) ... [2018-11-06 21:43:56,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:43:56,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:43:56,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:43:56,377 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:43:56,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:55" (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 21:43:56,443 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:43:56,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:43:56,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:44:05,195 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:44:05,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:44:05 BoogieIcfgContainer [2018-11-06 21:44:05,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:44:05,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:44:05,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:44:05,201 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:44:05,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:43:53" (1/3) ... [2018-11-06 21:44:05,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b4c8a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:44:05, skipping insertion in model container [2018-11-06 21:44:05,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:55" (2/3) ... [2018-11-06 21:44:05,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b4c8a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:44:05, skipping insertion in model container [2018-11-06 21:44:05,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:44:05" (3/3) ... [2018-11-06 21:44:05,205 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label32_true-unreach-call.c [2018-11-06 21:44:05,216 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:44:05,225 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:44:05,244 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:44:05,292 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:44:05,293 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:44:05,293 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:44:05,294 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:44:05,294 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:44:05,294 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:44:05,294 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:44:05,294 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:44:05,294 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:44:05,329 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-11-06 21:44:05,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-06 21:44:05,339 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:44:05,340 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:44:05,343 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:44:05,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:44:05,349 INFO L82 PathProgramCache]: Analyzing trace with hash 55000978, now seen corresponding path program 1 times [2018-11-06 21:44:05,352 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:44:05,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:44:05,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:44:05,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:44:05,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:44:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:44:05,824 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 21:44:05,827 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:44:05,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:44:05,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:44:05,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:44:05,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:44:05,853 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-11-06 21:44:16,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:44:16,767 INFO L93 Difference]: Finished difference Result 2078 states and 3883 transitions. [2018-11-06 21:44:16,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:44:16,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-11-06 21:44:16,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:44:16,804 INFO L225 Difference]: With dead ends: 2078 [2018-11-06 21:44:16,805 INFO L226 Difference]: Without dead ends: 1480 [2018-11-06 21:44:16,812 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:44:16,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2018-11-06 21:44:16,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1019. [2018-11-06 21:44:16,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1019 states. [2018-11-06 21:44:16,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1572 transitions. [2018-11-06 21:44:16,987 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1572 transitions. Word has length 49 [2018-11-06 21:44:16,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:44:16,989 INFO L480 AbstractCegarLoop]: Abstraction has 1019 states and 1572 transitions. [2018-11-06 21:44:16,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:44:16,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1572 transitions. [2018-11-06 21:44:16,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-06 21:44:16,996 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:44:16,996 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:44:17,000 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:44:17,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:44:17,000 INFO L82 PathProgramCache]: Analyzing trace with hash -880575450, now seen corresponding path program 1 times [2018-11-06 21:44:17,000 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:44:17,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:44:17,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:44:17,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:44:17,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:44:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:44:17,400 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:44:17,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:44:17,401 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:44:17,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:44:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:44:17,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:44:17,991 WARN L179 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 23 [2018-11-06 21:44:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:44:18,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:44:18,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-11-06 21:44:18,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:44:18,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:44:18,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:44:18,228 INFO L87 Difference]: Start difference. First operand 1019 states and 1572 transitions. Second operand 7 states. [2018-11-06 21:46:13,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:46:13,670 INFO L93 Difference]: Finished difference Result 7805 states and 12807 transitions. [2018-11-06 21:46:13,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-06 21:46:13,672 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2018-11-06 21:46:13,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:46:13,709 INFO L225 Difference]: With dead ends: 7805 [2018-11-06 21:46:13,710 INFO L226 Difference]: Without dead ends: 6788 [2018-11-06 21:46:13,718 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-11-06 21:46:13,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6788 states. [2018-11-06 21:46:13,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6788 to 6737. [2018-11-06 21:46:13,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6737 states. [2018-11-06 21:46:13,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6737 states to 6737 states and 8903 transitions. [2018-11-06 21:46:13,853 INFO L78 Accepts]: Start accepts. Automaton has 6737 states and 8903 transitions. Word has length 120 [2018-11-06 21:46:13,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:46:13,854 INFO L480 AbstractCegarLoop]: Abstraction has 6737 states and 8903 transitions. [2018-11-06 21:46:13,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 21:46:13,854 INFO L276 IsEmpty]: Start isEmpty. Operand 6737 states and 8903 transitions. [2018-11-06 21:46:13,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-11-06 21:46:13,861 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:46:13,862 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:46:13,862 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:46:13,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:46:13,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1198795128, now seen corresponding path program 1 times [2018-11-06 21:46:13,863 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:46:13,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:46:13,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:46:13,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:46:13,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:46:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:46:14,321 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:46:14,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:46:14,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:46:14,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:46:14,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:46:14,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:46:14,324 INFO L87 Difference]: Start difference. First operand 6737 states and 8903 transitions. Second operand 4 states. [2018-11-06 21:46:19,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:46:19,010 INFO L93 Difference]: Finished difference Result 22806 states and 30789 transitions. [2018-11-06 21:46:19,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:46:19,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2018-11-06 21:46:19,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:46:19,067 INFO L225 Difference]: With dead ends: 22806 [2018-11-06 21:46:19,068 INFO L226 Difference]: Without dead ends: 12569 [2018-11-06 21:46:19,083 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:46:19,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12569 states. [2018-11-06 21:46:19,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12569 to 12569. [2018-11-06 21:46:19,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12569 states. [2018-11-06 21:46:19,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12569 states to 12569 states and 14524 transitions. [2018-11-06 21:46:19,312 INFO L78 Accepts]: Start accepts. Automaton has 12569 states and 14524 transitions. Word has length 179 [2018-11-06 21:46:19,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:46:19,312 INFO L480 AbstractCegarLoop]: Abstraction has 12569 states and 14524 transitions. [2018-11-06 21:46:19,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:46:19,313 INFO L276 IsEmpty]: Start isEmpty. Operand 12569 states and 14524 transitions. [2018-11-06 21:46:19,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-11-06 21:46:19,316 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:46:19,316 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:46:19,317 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:46:19,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:46:19,317 INFO L82 PathProgramCache]: Analyzing trace with hash -714689746, now seen corresponding path program 1 times [2018-11-06 21:46:19,317 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:46:19,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:46:19,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:46:19,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:46:19,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:46:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:46:19,613 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-11-06 21:46:19,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:46:19,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:46:19,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:46:19,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:46:19,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:46:19,615 INFO L87 Difference]: Start difference. First operand 12569 states and 14524 transitions. Second operand 4 states. [2018-11-06 21:46:23,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:46:23,515 INFO L93 Difference]: Finished difference Result 26403 states and 30445 transitions. [2018-11-06 21:46:23,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:46:23,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 239 [2018-11-06 21:46:23,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:46:23,563 INFO L225 Difference]: With dead ends: 26403 [2018-11-06 21:46:23,563 INFO L226 Difference]: Without dead ends: 14268 [2018-11-06 21:46:23,580 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:46:23,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14268 states. [2018-11-06 21:46:23,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14268 to 12563. [2018-11-06 21:46:23,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12563 states. [2018-11-06 21:46:23,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12563 states to 12563 states and 14360 transitions. [2018-11-06 21:46:23,806 INFO L78 Accepts]: Start accepts. Automaton has 12563 states and 14360 transitions. Word has length 239 [2018-11-06 21:46:23,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:46:23,807 INFO L480 AbstractCegarLoop]: Abstraction has 12563 states and 14360 transitions. [2018-11-06 21:46:23,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:46:23,807 INFO L276 IsEmpty]: Start isEmpty. Operand 12563 states and 14360 transitions. [2018-11-06 21:46:23,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-11-06 21:46:23,815 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:46:23,815 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:46:23,816 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:46:23,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:46:23,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1220270311, now seen corresponding path program 1 times [2018-11-06 21:46:23,816 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:46:23,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:46:23,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:46:23,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:46:23,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:46:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:46:24,262 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2018-11-06 21:46:24,262 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:46:24,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:46:24,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:46:24,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:46:24,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:46:24,265 INFO L87 Difference]: Start difference. First operand 12563 states and 14360 transitions. Second operand 3 states. [2018-11-06 21:46:27,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:46:27,179 INFO L93 Difference]: Finished difference Result 34078 states and 39003 transitions. [2018-11-06 21:46:27,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:46:27,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 322 [2018-11-06 21:46:27,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:46:27,217 INFO L225 Difference]: With dead ends: 34078 [2018-11-06 21:46:27,218 INFO L226 Difference]: Without dead ends: 21517 [2018-11-06 21:46:27,235 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:46:27,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21517 states. [2018-11-06 21:46:27,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21517 to 21509. [2018-11-06 21:46:27,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21509 states. [2018-11-06 21:46:27,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21509 states to 21509 states and 24342 transitions. [2018-11-06 21:46:27,689 INFO L78 Accepts]: Start accepts. Automaton has 21509 states and 24342 transitions. Word has length 322 [2018-11-06 21:46:27,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:46:27,690 INFO L480 AbstractCegarLoop]: Abstraction has 21509 states and 24342 transitions. [2018-11-06 21:46:27,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:46:27,690 INFO L276 IsEmpty]: Start isEmpty. Operand 21509 states and 24342 transitions. [2018-11-06 21:46:27,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-11-06 21:46:27,701 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:46:27,702 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:46:27,702 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:46:27,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:46:27,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1317767390, now seen corresponding path program 1 times [2018-11-06 21:46:27,703 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:46:27,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:46:27,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:46:27,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:46:27,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:46:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:46:28,384 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 377 proven. 83 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2018-11-06 21:46:28,385 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:46:28,385 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:46:28,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:46:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:46:28,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:46:29,477 WARN L179 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 23 [2018-11-06 21:46:29,976 WARN L179 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 40 [2018-11-06 21:46:30,655 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2018-11-06 21:46:30,675 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:46:30,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2018-11-06 21:46:30,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:46:30,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:46:30,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:46:30,679 INFO L87 Difference]: Start difference. First operand 21509 states and 24342 transitions. Second operand 7 states. Received shutdown request... [2018-11-06 21:48:20,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:48:20,121 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 21:48:20,126 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 21:48:20,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:48:20 BoogieIcfgContainer [2018-11-06 21:48:20,127 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 21:48:20,128 INFO L168 Benchmark]: Toolchain (without parser) took 266312.18 ms. Allocated memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: 1.4 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -377.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-06 21:48:20,129 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 21:48:20,130 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1596.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-06 21:48:20,130 INFO L168 Benchmark]: Boogie Procedure Inliner took 517.57 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -923.6 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-06 21:48:20,132 INFO L168 Benchmark]: Boogie Preprocessor took 443.25 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: 41.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. [2018-11-06 21:48:20,132 INFO L168 Benchmark]: RCFGBuilder took 8819.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 479.8 MB). Peak memory consumption was 479.8 MB. Max. memory is 7.1 GB. [2018-11-06 21:48:20,134 INFO L168 Benchmark]: TraceAbstraction took 254929.34 ms. Allocated memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: 649.1 MB). Free memory was 1.7 GB in the beginning and 1.8 GB in the end (delta: -112.5 MB). Peak memory consumption was 536.5 MB. Max. memory is 7.1 GB. [2018-11-06 21:48:20,145 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 1596.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 517.57 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -923.6 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 443.25 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: 41.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8819.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 479.8 MB). Peak memory consumption was 479.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254929.34 ms. Allocated memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: 649.1 MB). Free memory was 1.7 GB in the beginning and 1.8 GB in the end (delta: -112.5 MB). Peak memory consumption was 536.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 152]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 152). Cancelled while BasicCegarLoop was constructing difference of abstraction (21509states) and FLOYD_HOARE automaton (currently 4 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (390 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 254.8s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 247.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2199 SDtfs, 8784 SDslu, 1371 SDs, 0 SdLazy, 20238 SolverSat, 4634 SolverUnsat, 127 SolverUnknown, 0 SolverNotchecked, 239.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 530 GetRequests, 503 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21509occurred in iteration=5, 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: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 2225 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 1789 NumberOfCodeBlocks, 1789 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1781 ConstructedInterpolants, 165 QuantifiedInterpolants, 3670913 SizeOfPredicates, 2 NumberOfNonLiveVariables, 703 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 1826/1955 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown