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_label13_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 21:00:14,879 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 21:00:14,884 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 21:00:14,901 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 21:00:14,901 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 21:00:14,902 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 21:00:14,904 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 21:00:14,905 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 21:00:14,907 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 21:00:14,908 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 21:00:14,909 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 21:00:14,909 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 21:00:14,910 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 21:00:14,911 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 21:00:14,912 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 21:00:14,913 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 21:00:14,914 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 21:00:14,916 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 21:00:14,918 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 21:00:14,919 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 21:00:14,920 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 21:00:14,922 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 21:00:14,924 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 21:00:14,933 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 21:00:14,948 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 21:00:14,948 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 21:00:14,949 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 21:00:14,949 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 21:00:14,952 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 21:00:14,952 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 21:00:14,952 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 21:00:14,952 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 21:00:14,953 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 21:00:14,953 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 21:00:14,953 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 21:00:14,953 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 21:00:14,953 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 21:00:14,954 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 21:00:14,955 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 21:00:14,955 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 21:00:14,955 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 21:00:14,955 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 21:00:14,956 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 21:00:14,956 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 21:00:14,956 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 21:00:14,956 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 21:00:14,956 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 21:00:14,956 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 21:00:14,958 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 21:00:14,958 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 21:00:14,958 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 21:00:14,958 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 21:00:15,010 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 21:00:15,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 21:00:15,027 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 21:00:15,029 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 21:00:15,029 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 21:00:15,030 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label13_true-unreach-call.c [2018-10-23 21:00:15,089 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f2fa49f4d/0d0e7d7593fa46bab7e0e69ab3563876/FLAGaf464c798 [2018-10-23 21:00:16,032 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 21:00:16,033 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label13_true-unreach-call.c [2018-10-23 21:00:16,089 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f2fa49f4d/0d0e7d7593fa46bab7e0e69ab3563876/FLAGaf464c798 [2018-10-23 21:00:16,109 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f2fa49f4d/0d0e7d7593fa46bab7e0e69ab3563876 [2018-10-23 21:00:16,125 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 21:00:16,127 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 21:00:16,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 21:00:16,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 21:00:16,136 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 21:00:16,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:00:16" (1/1) ... [2018-10-23 21:00:16,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a99fc8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:16, skipping insertion in model container [2018-10-23 21:00:16,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:00:16" (1/1) ... [2018-10-23 21:00:16,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 21:00:16,437 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 21:00:18,520 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:00:18,525 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 21:00:19,555 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:00:19,620 INFO L193 MainTranslator]: Completed translation [2018-10-23 21:00:19,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:19 WrapperNode [2018-10-23 21:00:19,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 21:00:19,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 21:00:19,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 21:00:19,622 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 21:00:19,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:19" (1/1) ... [2018-10-23 21:00:19,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:19" (1/1) ... [2018-10-23 21:00:20,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 21:00:20,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 21:00:20,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 21:00:20,854 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 21:00:20,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:19" (1/1) ... [2018-10-23 21:00:20,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:19" (1/1) ... [2018-10-23 21:00:20,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:19" (1/1) ... [2018-10-23 21:00:20,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:19" (1/1) ... [2018-10-23 21:00:21,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:19" (1/1) ... [2018-10-23 21:00:21,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:19" (1/1) ... [2018-10-23 21:00:21,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:19" (1/1) ... [2018-10-23 21:00:21,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 21:00:21,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 21:00:21,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 21:00:21,610 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 21:00:21,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:19" (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 21:00:21,678 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 21:00:21,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 21:00:21,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 21:00:40,097 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 21:00:40,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:00:40 BoogieIcfgContainer [2018-10-23 21:00:40,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 21:00:40,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 21:00:40,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 21:00:40,103 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 21:00:40,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:00:16" (1/3) ... [2018-10-23 21:00:40,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245493c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:00:40, skipping insertion in model container [2018-10-23 21:00:40,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:19" (2/3) ... [2018-10-23 21:00:40,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245493c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:00:40, skipping insertion in model container [2018-10-23 21:00:40,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:00:40" (3/3) ... [2018-10-23 21:00:40,107 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label13_true-unreach-call.c [2018-10-23 21:00:40,117 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 21:00:40,128 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 21:00:40,149 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 21:00:40,203 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 21:00:40,204 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 21:00:40,204 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 21:00:40,204 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 21:00:40,205 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 21:00:40,205 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 21:00:40,205 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 21:00:40,205 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 21:00:40,205 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 21:00:40,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-23 21:00:40,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-23 21:00:40,262 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:00:40,264 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] [2018-10-23 21:00:40,266 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:00:40,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:00:40,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1502078046, now seen corresponding path program 1 times [2018-10-23 21:00:40,275 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:00:40,276 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:00:40,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:40,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:00:40,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:00:40,772 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 21:00:40,777 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:00:40,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:00:40,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:00:40,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:00:40,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:00:40,803 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-23 21:01:15,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:01:15,304 INFO L93 Difference]: Finished difference Result 6431 states and 12286 transitions. [2018-10-23 21:01:15,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:01:15,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-10-23 21:01:15,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:01:15,361 INFO L225 Difference]: With dead ends: 6431 [2018-10-23 21:01:15,361 INFO L226 Difference]: Without dead ends: 4675 [2018-10-23 21:01:15,373 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 21:01:15,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4675 states. [2018-10-23 21:01:15,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4675 to 4581. [2018-10-23 21:01:15,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4581 states. [2018-10-23 21:01:15,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 7890 transitions. [2018-10-23 21:01:15,590 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 7890 transitions. Word has length 36 [2018-10-23 21:01:15,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:01:15,590 INFO L481 AbstractCegarLoop]: Abstraction has 4581 states and 7890 transitions. [2018-10-23 21:01:15,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:01:15,591 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 7890 transitions. [2018-10-23 21:01:15,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-23 21:01:15,596 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:01:15,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:15,600 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:01:15,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:01:15,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1744428717, now seen corresponding path program 1 times [2018-10-23 21:01:15,601 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:01:15,601 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:01:15,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:15,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:01:15,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:01:16,032 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 21:01:16,234 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-23 21:01:16,485 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 23 [2018-10-23 21:01:16,726 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:01:16,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:01:16,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 21:01:16,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 21:01:16,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 21:01:16,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 21:01:16,729 INFO L87 Difference]: Start difference. First operand 4581 states and 7890 transitions. Second operand 6 states. [2018-10-23 21:01:48,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:01:48,141 INFO L93 Difference]: Finished difference Result 17384 states and 28714 transitions. [2018-10-23 21:01:48,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 21:01:48,143 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2018-10-23 21:01:48,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:01:48,203 INFO L225 Difference]: With dead ends: 17384 [2018-10-23 21:01:48,203 INFO L226 Difference]: Without dead ends: 12805 [2018-10-23 21:01:48,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-23 21:01:48,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12805 states. [2018-10-23 21:01:48,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12805 to 11430. [2018-10-23 21:01:48,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11430 states. [2018-10-23 21:01:48,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11430 states to 11430 states and 17329 transitions. [2018-10-23 21:01:48,437 INFO L78 Accepts]: Start accepts. Automaton has 11430 states and 17329 transitions. Word has length 108 [2018-10-23 21:01:48,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:01:48,438 INFO L481 AbstractCegarLoop]: Abstraction has 11430 states and 17329 transitions. [2018-10-23 21:01:48,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 21:01:48,438 INFO L276 IsEmpty]: Start isEmpty. Operand 11430 states and 17329 transitions. [2018-10-23 21:01:48,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-10-23 21:01:48,445 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:01:48,445 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:48,446 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:01:48,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:01:48,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1579920259, now seen corresponding path program 1 times [2018-10-23 21:01:48,446 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:01:48,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:01:48,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:48,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:01:48,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:01:49,421 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-10-23 21:01:49,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:01:49,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 21:01:49,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 21:01:49,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 21:01:49,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 21:01:49,423 INFO L87 Difference]: Start difference. First operand 11430 states and 17329 transitions. Second operand 7 states. [2018-10-23 21:02:26,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:02:26,234 INFO L93 Difference]: Finished difference Result 35166 states and 54823 transitions. [2018-10-23 21:02:26,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 21:02:26,235 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 322 [2018-10-23 21:02:26,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:02:26,307 INFO L225 Difference]: With dead ends: 35166 [2018-10-23 21:02:26,308 INFO L226 Difference]: Without dead ends: 23738 [2018-10-23 21:02:26,324 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 21:02:26,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23738 states. [2018-10-23 21:02:26,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23738 to 19636. [2018-10-23 21:02:26,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19636 states. [2018-10-23 21:02:26,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19636 states to 19636 states and 26064 transitions. [2018-10-23 21:02:26,667 INFO L78 Accepts]: Start accepts. Automaton has 19636 states and 26064 transitions. Word has length 322 [2018-10-23 21:02:26,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:02:26,668 INFO L481 AbstractCegarLoop]: Abstraction has 19636 states and 26064 transitions. [2018-10-23 21:02:26,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 21:02:26,668 INFO L276 IsEmpty]: Start isEmpty. Operand 19636 states and 26064 transitions. [2018-10-23 21:02:26,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-10-23 21:02:26,678 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:02:26,678 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:26,679 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:02:26,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:02:26,679 INFO L82 PathProgramCache]: Analyzing trace with hash 688101527, now seen corresponding path program 1 times [2018-10-23 21:02:26,679 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:02:26,679 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:02:26,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:02:26,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:02:26,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:02:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:02:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 67 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-23 21:02:27,203 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 21:02:27,203 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 21:02:27,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:02:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:02:27,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 21:02:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:02:27,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 21:02:27,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 21:02:27,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:02:27,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:02:27,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:02:27,488 INFO L87 Difference]: Start difference. First operand 19636 states and 26064 transitions. Second operand 4 states. [2018-10-23 21:02:54,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:02:54,367 INFO L93 Difference]: Finished difference Result 68184 states and 93591 transitions. [2018-10-23 21:02:54,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:02:54,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 350 [2018-10-23 21:02:54,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:02:54,472 INFO L225 Difference]: With dead ends: 68184 [2018-10-23 21:02:54,472 INFO L226 Difference]: Without dead ends: 49916 [2018-10-23 21:02:54,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 350 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 21:02:54,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49916 states. [2018-10-23 21:02:55,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49916 to 31922. [2018-10-23 21:02:55,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31922 states. [2018-10-23 21:02:55,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31922 states to 31922 states and 43418 transitions. [2018-10-23 21:02:55,595 INFO L78 Accepts]: Start accepts. Automaton has 31922 states and 43418 transitions. Word has length 350 [2018-10-23 21:02:55,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:02:55,599 INFO L481 AbstractCegarLoop]: Abstraction has 31922 states and 43418 transitions. [2018-10-23 21:02:55,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:02:55,600 INFO L276 IsEmpty]: Start isEmpty. Operand 31922 states and 43418 transitions. [2018-10-23 21:02:55,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-10-23 21:02:55,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:02:55,611 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:55,611 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:02:55,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:02:55,612 INFO L82 PathProgramCache]: Analyzing trace with hash -683855534, now seen corresponding path program 1 times [2018-10-23 21:02:55,612 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:02:55,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:02:55,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:02:55,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:02:55,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:02:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:02:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 67 proven. 65 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-23 21:02:56,281 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 21:02:56,281 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 21:02:56,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:02:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:02:56,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 21:02:56,616 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:02:56,650 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 21:02:56,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-23 21:02:56,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 21:02:56,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 21:02:56,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 21:02:56,653 INFO L87 Difference]: Start difference. First operand 31922 states and 43418 transitions. Second operand 5 states. [2018-10-23 21:03:33,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:03:33,869 INFO L93 Difference]: Finished difference Result 133872 states and 192096 transitions. [2018-10-23 21:03:33,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 21:03:33,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 395 [2018-10-23 21:03:33,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:03:34,082 INFO L225 Difference]: With dead ends: 133872 [2018-10-23 21:03:34,082 INFO L226 Difference]: Without dead ends: 97852 [2018-10-23 21:03:34,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 396 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 21:03:34,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97852 states. [2018-10-23 21:03:35,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97852 to 95031. [2018-10-23 21:03:35,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95031 states. [2018-10-23 21:03:35,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95031 states to 95031 states and 117721 transitions. [2018-10-23 21:03:35,294 INFO L78 Accepts]: Start accepts. Automaton has 95031 states and 117721 transitions. Word has length 395 [2018-10-23 21:03:35,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:03:35,295 INFO L481 AbstractCegarLoop]: Abstraction has 95031 states and 117721 transitions. [2018-10-23 21:03:35,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 21:03:35,296 INFO L276 IsEmpty]: Start isEmpty. Operand 95031 states and 117721 transitions. [2018-10-23 21:03:35,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2018-10-23 21:03:35,305 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:03:35,306 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, 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, 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, 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, 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, 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] [2018-10-23 21:03:35,306 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:03:35,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:03:35,307 INFO L82 PathProgramCache]: Analyzing trace with hash 221221852, now seen corresponding path program 1 times [2018-10-23 21:03:35,307 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:03:35,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:03:35,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:03:35,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:03:35,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:03:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:03:35,964 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-10-23 21:03:35,964 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:03:35,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:03:35,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:03:35,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:03:35,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:03:35,966 INFO L87 Difference]: Start difference. First operand 95031 states and 117721 transitions. Second operand 4 states. [2018-10-23 21:03:55,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:03:55,052 INFO L93 Difference]: Finished difference Result 259736 states and 324302 transitions. [2018-10-23 21:03:55,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:03:55,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 492 [2018-10-23 21:03:55,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:03:55,278 INFO L225 Difference]: With dead ends: 259736 [2018-10-23 21:03:55,279 INFO L226 Difference]: Without dead ends: 157846 [2018-10-23 21:03:55,357 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:03:55,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157846 states. [2018-10-23 21:03:56,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157846 to 157834. [2018-10-23 21:03:56,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157834 states. [2018-10-23 21:03:58,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157834 states to 157834 states and 187231 transitions. [2018-10-23 21:03:58,093 INFO L78 Accepts]: Start accepts. Automaton has 157834 states and 187231 transitions. Word has length 492 [2018-10-23 21:03:58,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:03:58,094 INFO L481 AbstractCegarLoop]: Abstraction has 157834 states and 187231 transitions. [2018-10-23 21:03:58,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:03:58,095 INFO L276 IsEmpty]: Start isEmpty. Operand 157834 states and 187231 transitions. [2018-10-23 21:03:58,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2018-10-23 21:03:58,128 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:03:58,128 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, 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, 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:03:58,129 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:03:58,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:03:58,130 INFO L82 PathProgramCache]: Analyzing trace with hash -292757731, now seen corresponding path program 1 times [2018-10-23 21:03:58,130 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:03:58,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:03:58,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:03:58,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:03:58,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:03:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:03:58,858 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 742 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-10-23 21:03:58,858 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:03:58,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:03:58,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:03:58,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:03:58,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:03:58,860 INFO L87 Difference]: Start difference. First operand 157834 states and 187231 transitions. Second operand 4 states. Received shutdown request... [2018-10-23 21:04:13,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:04:13,507 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 21:04:13,512 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 21:04:13,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:04:13 BoogieIcfgContainer [2018-10-23 21:04:13,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 21:04:13,513 INFO L168 Benchmark]: Toolchain (without parser) took 237387.40 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-23 21:04:13,515 INFO L168 Benchmark]: CDTParser took 0.22 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 21:04:13,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3491.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-23 21:04:13,516 INFO L168 Benchmark]: Boogie Procedure Inliner took 1231.61 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 875.0 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. [2018-10-23 21:04:13,517 INFO L168 Benchmark]: Boogie Preprocessor took 755.77 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 92.3 MB). Peak memory consumption was 92.3 MB. Max. memory is 7.1 GB. [2018-10-23 21:04:13,518 INFO L168 Benchmark]: RCFGBuilder took 18488.45 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 292.0 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -396.6 MB). Peak memory consumption was 852.2 MB. Max. memory is 7.1 GB. [2018-10-23 21:04:13,519 INFO L168 Benchmark]: TraceAbstraction took 213413.03 ms. Allocated memory was 2.7 GB in the beginning and 3.7 GB in the end (delta: 1.0 GB). Free memory was 2.5 GB in the beginning and 2.5 GB in the end (delta: 7.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-23 21:04:13,524 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 3491.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1231.61 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 875.0 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 755.77 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 92.3 MB). Peak memory consumption was 92.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18488.45 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 292.0 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -396.6 MB). Peak memory consumption was 852.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213413.03 ms. Allocated memory was 2.7 GB in the beginning and 3.7 GB in the end (delta: 1.0 GB). Free memory was 2.5 GB in the beginning and 2.5 GB in the end (delta: 7.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 121). Cancelled while BasicCegarLoop was constructing difference of abstraction (157834states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (218032 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 213.3s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 201.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7549 SDtfs, 40680 SDslu, 3655 SDs, 0 SdLazy, 84315 SolverSat, 23426 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 172.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 789 GetRequests, 754 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=157834occurred in iteration=6, 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: 5.7s AutomataMinimizationTime, 6 MinimizatonAttempts, 26398 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 3176 NumberOfCodeBlocks, 3176 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 3167 ConstructedInterpolants, 0 QuantifiedInterpolants, 3782529 SizeOfPredicates, 0 NumberOfNonLiveVariables, 921 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 1945/2014 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown