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/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label35_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 21:02:46,844 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 21:02:46,847 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 21:02:46,865 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 21:02:46,866 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 21:02:46,867 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 21:02:46,868 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 21:02:46,870 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 21:02:46,872 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 21:02:46,876 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 21:02:46,879 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 21:02:46,879 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 21:02:46,880 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 21:02:46,881 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 21:02:46,884 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 21:02:46,886 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 21:02:46,887 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 21:02:46,890 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 21:02:46,892 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 21:02:46,894 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 21:02:46,895 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 21:02:46,896 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 21:02:46,902 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 21:02:46,917 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 21:02:46,941 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 21:02:46,941 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 21:02:46,942 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 21:02:46,942 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 21:02:46,943 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 21:02:46,943 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 21:02:46,943 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 21:02:46,943 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 21:02:46,944 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 21:02:46,944 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 21:02:46,944 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 21:02:46,944 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 21:02:46,944 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 21:02:46,944 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 21:02:46,945 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 21:02:46,945 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 21:02:46,945 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 21:02:46,945 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 21:02:46,945 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 21:02:46,946 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 21:02:46,946 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 21:02:46,946 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 21:02:46,946 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 21:02:46,946 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 21:02:46,947 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 21:02:46,947 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 21:02:46,947 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 21:02:46,947 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 21:02:47,007 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 21:02:47,023 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 21:02:47,028 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 21:02:47,029 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 21:02:47,030 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 21:02:47,031 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label35_true-unreach-call.c [2018-10-23 21:02:47,092 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4e3129dde/045522f8d99d4d4eaca4e87e40b237c2/FLAG762c7486d [2018-10-23 21:02:48,006 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 21:02:48,008 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label35_true-unreach-call.c [2018-10-23 21:02:48,050 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4e3129dde/045522f8d99d4d4eaca4e87e40b237c2/FLAG762c7486d [2018-10-23 21:02:48,065 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4e3129dde/045522f8d99d4d4eaca4e87e40b237c2 [2018-10-23 21:02:48,076 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 21:02:48,077 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 21:02:48,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 21:02:48,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 21:02:48,083 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 21:02:48,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:02:48" (1/1) ... [2018-10-23 21:02:48,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10e73541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:48, skipping insertion in model container [2018-10-23 21:02:48,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:02:48" (1/1) ... [2018-10-23 21:02:48,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 21:02:48,334 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 21:02:50,361 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:02:50,366 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 21:02:51,875 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:02:51,940 INFO L193 MainTranslator]: Completed translation [2018-10-23 21:02:51,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:51 WrapperNode [2018-10-23 21:02:51,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 21:02:51,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 21:02:51,943 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 21:02:51,943 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 21:02:51,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:51" (1/1) ... [2018-10-23 21:02:52,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:51" (1/1) ... [2018-10-23 21:02:53,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 21:02:53,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 21:02:53,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 21:02:53,061 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 21:02:53,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:51" (1/1) ... [2018-10-23 21:02:53,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:51" (1/1) ... [2018-10-23 21:02:53,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:51" (1/1) ... [2018-10-23 21:02:53,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:51" (1/1) ... [2018-10-23 21:02:53,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:51" (1/1) ... [2018-10-23 21:02:53,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:51" (1/1) ... [2018-10-23 21:02:53,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:51" (1/1) ... [2018-10-23 21:02:53,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 21:02:53,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 21:02:53,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 21:02:53,734 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 21:02:53,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:51" (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 [2018-10-23 21:02:53,810 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 21:02:53,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 21:02:53,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 21:03:10,956 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 21:03:10,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:03:10 BoogieIcfgContainer [2018-10-23 21:03:10,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 21:03:10,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 21:03:10,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 21:03:10,962 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 21:03:10,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:02:48" (1/3) ... [2018-10-23 21:03:10,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37bb302d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:03:10, skipping insertion in model container [2018-10-23 21:03:10,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:51" (2/3) ... [2018-10-23 21:03:10,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37bb302d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:03:10, skipping insertion in model container [2018-10-23 21:03:10,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:03:10" (3/3) ... [2018-10-23 21:03:10,967 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label35_true-unreach-call.c [2018-10-23 21:03:10,977 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 21:03:10,988 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 21:03:11,008 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 21:03:11,060 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 21:03:11,061 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 21:03:11,061 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 21:03:11,061 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 21:03:11,061 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 21:03:11,062 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 21:03:11,062 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 21:03:11,062 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 21:03:11,062 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 21:03:11,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-23 21:03:11,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-23 21:03:11,121 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:03:11,123 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] [2018-10-23 21:03:11,126 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:03:11,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:03:11,133 INFO L82 PathProgramCache]: Analyzing trace with hash 935177138, now seen corresponding path program 1 times [2018-10-23 21:03:11,135 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:03:11,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:03:11,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:03:11,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:03:11,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:03:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:03:11,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:03:11,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:03:11,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:03:11,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:03:11,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:03:11,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:03:11,608 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-23 21:03:39,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:03:39,667 INFO L93 Difference]: Finished difference Result 6409 states and 12226 transitions. [2018-10-23 21:03:39,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:03:39,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2018-10-23 21:03:39,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:03:39,854 INFO L225 Difference]: With dead ends: 6409 [2018-10-23 21:03:39,854 INFO L226 Difference]: Without dead ends: 4653 [2018-10-23 21:03:39,865 INFO L605 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 [2018-10-23 21:03:39,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4653 states. [2018-10-23 21:03:40,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4653 to 4617. [2018-10-23 21:03:40,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4617 states. [2018-10-23 21:03:40,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4617 states to 4617 states and 7623 transitions. [2018-10-23 21:03:40,112 INFO L78 Accepts]: Start accepts. Automaton has 4617 states and 7623 transitions. Word has length 40 [2018-10-23 21:03:40,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:03:40,113 INFO L481 AbstractCegarLoop]: Abstraction has 4617 states and 7623 transitions. [2018-10-23 21:03:40,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:03:40,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4617 states and 7623 transitions. [2018-10-23 21:03:40,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-23 21:03:40,120 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:03:40,120 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, 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] [2018-10-23 21:03:40,123 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:03:40,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:03:40,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1936493654, now seen corresponding path program 1 times [2018-10-23 21:03:40,124 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:03:40,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:03:40,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:03:40,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:03:40,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:03:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:03:41,206 WARN L179 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-23 21:03:41,459 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-23 21:03:41,671 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:03:41,671 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:03:41,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 21:03:41,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 21:03:41,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 21:03:41,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 21:03:41,674 INFO L87 Difference]: Start difference. First operand 4617 states and 7623 transitions. Second operand 6 states. [2018-10-23 21:04:21,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:04:21,416 INFO L93 Difference]: Finished difference Result 20193 states and 32414 transitions. [2018-10-23 21:04:21,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 21:04:21,417 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2018-10-23 21:04:21,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:04:21,493 INFO L225 Difference]: With dead ends: 20193 [2018-10-23 21:04:21,493 INFO L226 Difference]: Without dead ends: 15578 [2018-10-23 21:04:21,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-23 21:04:21,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15578 states. [2018-10-23 21:04:21,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15578 to 14205. [2018-10-23 21:04:21,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14205 states. [2018-10-23 21:04:21,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14205 states to 14205 states and 19575 transitions. [2018-10-23 21:04:21,777 INFO L78 Accepts]: Start accepts. Automaton has 14205 states and 19575 transitions. Word has length 108 [2018-10-23 21:04:21,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:04:21,777 INFO L481 AbstractCegarLoop]: Abstraction has 14205 states and 19575 transitions. [2018-10-23 21:04:21,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 21:04:21,778 INFO L276 IsEmpty]: Start isEmpty. Operand 14205 states and 19575 transitions. [2018-10-23 21:04:21,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-10-23 21:04:21,797 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:04:21,798 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, 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, 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] [2018-10-23 21:04:21,798 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:04:21,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:04:21,799 INFO L82 PathProgramCache]: Analyzing trace with hash 7225493, now seen corresponding path program 1 times [2018-10-23 21:04:21,799 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:04:21,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:04:21,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:04:21,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:04:21,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:04:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:04:22,706 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-10-23 21:04:22,706 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:04:22,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 21:04:22,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 21:04:22,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 21:04:22,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 21:04:22,708 INFO L87 Difference]: Start difference. First operand 14205 states and 19575 transitions. Second operand 7 states. [2018-10-23 21:05:03,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:05:03,815 INFO L93 Difference]: Finished difference Result 42079 states and 58222 transitions. [2018-10-23 21:05:03,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 21:05:03,816 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 316 [2018-10-23 21:05:03,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:05:03,890 INFO L225 Difference]: With dead ends: 42079 [2018-10-23 21:05:03,890 INFO L226 Difference]: Without dead ends: 27876 [2018-10-23 21:05:03,909 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-23 21:05:03,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27876 states. [2018-10-23 21:05:04,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27876 to 23774. [2018-10-23 21:05:04,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23774 states. [2018-10-23 21:05:04,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23774 states to 23774 states and 29481 transitions. [2018-10-23 21:05:04,338 INFO L78 Accepts]: Start accepts. Automaton has 23774 states and 29481 transitions. Word has length 316 [2018-10-23 21:05:04,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:05:04,339 INFO L481 AbstractCegarLoop]: Abstraction has 23774 states and 29481 transitions. [2018-10-23 21:05:04,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 21:05:04,339 INFO L276 IsEmpty]: Start isEmpty. Operand 23774 states and 29481 transitions. [2018-10-23 21:05:04,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-10-23 21:05:04,349 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:05:04,349 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, 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, 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] [2018-10-23 21:05:04,349 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:05:04,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:05:04,350 INFO L82 PathProgramCache]: Analyzing trace with hash -192675793, now seen corresponding path program 1 times [2018-10-23 21:05:04,350 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:05:04,350 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:05:04,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:05:04,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:05:04,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:05:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:05:04,800 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 75 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:05:04,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 21:05:04,801 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 21:05:04,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:05:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:05:04,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 21:05:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:05:05,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 21:05:05,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-23 21:05:05,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 21:05:05,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 21:05:05,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 21:05:05,107 INFO L87 Difference]: Start difference. First operand 23774 states and 29481 transitions. Second operand 5 states. [2018-10-23 21:05:42,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:05:42,550 INFO L93 Difference]: Finished difference Result 109446 states and 147487 transitions. [2018-10-23 21:05:42,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 21:05:42,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 344 [2018-10-23 21:05:42,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:05:42,699 INFO L225 Difference]: With dead ends: 109446 [2018-10-23 21:05:42,700 INFO L226 Difference]: Without dead ends: 76108 [2018-10-23 21:05:42,751 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 21:05:42,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76108 states. [2018-10-23 21:05:43,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76108 to 76005. [2018-10-23 21:05:43,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76005 states. [2018-10-23 21:05:44,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76005 states to 76005 states and 90448 transitions. [2018-10-23 21:05:44,006 INFO L78 Accepts]: Start accepts. Automaton has 76005 states and 90448 transitions. Word has length 344 [2018-10-23 21:05:44,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:05:44,007 INFO L481 AbstractCegarLoop]: Abstraction has 76005 states and 90448 transitions. [2018-10-23 21:05:44,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 21:05:44,007 INFO L276 IsEmpty]: Start isEmpty. Operand 76005 states and 90448 transitions. [2018-10-23 21:05:44,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-10-23 21:05:44,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:05:44,013 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, 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, 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] [2018-10-23 21:05:44,014 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:05:44,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:05:44,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1105532327, now seen corresponding path program 1 times [2018-10-23 21:05:44,014 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:05:44,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:05:44,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:05:44,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:05:44,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:05:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:05:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 75 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-23 21:05:44,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 21:05:44,592 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 21:05:44,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:05:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:05:44,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 21:05:44,814 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:05:44,848 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 21:05:44,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 21:05:44,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:05:44,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:05:44,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:05:44,850 INFO L87 Difference]: Start difference. First operand 76005 states and 90448 transitions. Second operand 4 states. [2018-10-23 21:06:09,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:06:09,970 INFO L93 Difference]: Finished difference Result 271198 states and 327262 transitions. [2018-10-23 21:06:09,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:06:09,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 354 [2018-10-23 21:06:09,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:06:10,882 INFO L225 Difference]: With dead ends: 271198 [2018-10-23 21:06:10,882 INFO L226 Difference]: Without dead ends: 196561 [2018-10-23 21:06:10,950 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:06:11,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196561 states. [2018-10-23 21:06:12,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196561 to 126540. [2018-10-23 21:06:12,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126540 states. [2018-10-23 21:06:12,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126540 states to 126540 states and 149973 transitions. [2018-10-23 21:06:12,840 INFO L78 Accepts]: Start accepts. Automaton has 126540 states and 149973 transitions. Word has length 354 [2018-10-23 21:06:12,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:06:12,841 INFO L481 AbstractCegarLoop]: Abstraction has 126540 states and 149973 transitions. [2018-10-23 21:06:12,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:06:12,841 INFO L276 IsEmpty]: Start isEmpty. Operand 126540 states and 149973 transitions. [2018-10-23 21:06:12,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2018-10-23 21:06:12,871 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:06:12,872 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:06:12,872 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:06:12,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:06:12,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1494182096, now seen corresponding path program 1 times [2018-10-23 21:06:12,873 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:06:12,873 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:06:12,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:06:12,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:06:12,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:06:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:06:13,986 WARN L179 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-10-23 21:06:14,384 WARN L179 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2018-10-23 21:06:15,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 655 proven. 4 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2018-10-23 21:06:15,962 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 21:06:15,962 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 21:06:15,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:06:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:06:16,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 21:06:16,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 951 trivial. 0 not checked. [2018-10-23 21:06:16,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 21:06:16,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 21:06:16,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 21:06:16,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 21:06:16,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-23 21:06:16,576 INFO L87 Difference]: Start difference. First operand 126540 states and 149973 transitions. Second operand 6 states. Received shutdown request... [2018-10-23 21:06:45,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 21:06:45,443 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 21:06:45,448 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 21:06:45,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:06:45 BoogieIcfgContainer [2018-10-23 21:06:45,449 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 21:06:45,450 INFO L168 Benchmark]: Toolchain (without parser) took 237373.70 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 954.4 MB. Max. memory is 7.1 GB. [2018-10-23 21:06:45,451 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-10-23 21:06:45,452 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3863.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 980.8 MB in the end (delta: 416.5 MB). Peak memory consumption was 416.5 MB. Max. memory is 7.1 GB. [2018-10-23 21:06:45,453 INFO L168 Benchmark]: Boogie Procedure Inliner took 1117.69 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 850.9 MB). Free memory was 980.8 MB in the beginning and 2.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 107.2 MB. Max. memory is 7.1 GB. [2018-10-23 21:06:45,454 INFO L168 Benchmark]: Boogie Preprocessor took 672.68 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 104.6 MB). Peak memory consumption was 104.6 MB. Max. memory is 7.1 GB. [2018-10-23 21:06:45,455 INFO L168 Benchmark]: RCFGBuilder took 17224.15 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 275.8 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 500.4 MB). Peak memory consumption was 776.1 MB. Max. memory is 7.1 GB. [2018-10-23 21:06:45,457 INFO L168 Benchmark]: TraceAbstraction took 214490.41 ms. Allocated memory was 2.7 GB in the beginning and 3.8 GB in the end (delta: 1.2 GB). Free memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: -1.2 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 21:06:45,462 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 3863.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 980.8 MB in the end (delta: 416.5 MB). Peak memory consumption was 416.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1117.69 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 850.9 MB). Free memory was 980.8 MB in the beginning and 2.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 107.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 672.68 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 104.6 MB). Peak memory consumption was 104.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17224.15 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 275.8 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 500.4 MB). Peak memory consumption was 776.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214490.41 ms. Allocated memory was 2.7 GB in the beginning and 3.8 GB in the end (delta: 1.2 GB). Free memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: -1.2 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 133). Cancelled while BasicCegarLoop was constructing difference of abstraction (126540states) and FLOYD_HOARE automaton (currently 7 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (216598 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 214.3s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 201.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7090 SDtfs, 41282 SDslu, 3608 SDs, 0 SdLazy, 90538 SolverSat, 19874 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 173.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1555 GetRequests, 1522 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126540occurred 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: 4.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 75635 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 3500 NumberOfCodeBlocks, 3500 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 3491 ConstructedInterpolants, 0 QuantifiedInterpolants, 7134985 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1833 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 2892/2965 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown