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_label50_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:42:38,984 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:42:38,987 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:42:39,000 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:42:39,000 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:42:39,001 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:42:39,002 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:42:39,004 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:42:39,008 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:42:39,008 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:42:39,009 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:42:39,010 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:42:39,011 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:42:39,011 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:42:39,012 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:42:39,016 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:42:39,017 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:42:39,021 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:42:39,023 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:42:39,024 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:42:39,025 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:42:39,026 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:42:39,028 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:42:39,029 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:42:39,029 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:42:39,030 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:42:39,031 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:42:39,032 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:42:39,032 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:42:39,033 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:42:39,033 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:42:39,034 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 18:42:39,036 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 18:42:39,051 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:42:39,051 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:42:39,052 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:42:39,052 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:42:39,053 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:42:39,053 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:42:39,053 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:42:39,053 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:42:39,054 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:42:39,054 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:42:39,054 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:42:39,054 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:42:39,054 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:42:39,055 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:42:39,055 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:42:39,055 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:42:39,055 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:42:39,055 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:42:39,056 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:42:39,056 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:42:39,056 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:42:39,056 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:42:39,056 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:42:39,056 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:42:39,057 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:42:39,057 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:42:39,057 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:42:39,057 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:42:39,102 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:42:39,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:42:39,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:42:39,123 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:42:39,124 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:42:39,125 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label50_false-unreach-call.c [2018-10-23 18:42:39,190 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/23ad2ab23/5e18a258c9bc4d149f68ebb948648341/FLAG039bea3de [2018-10-23 18:42:40,142 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:42:40,143 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label50_false-unreach-call.c [2018-10-23 18:42:40,193 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/23ad2ab23/5e18a258c9bc4d149f68ebb948648341/FLAG039bea3de [2018-10-23 18:42:40,212 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/23ad2ab23/5e18a258c9bc4d149f68ebb948648341 [2018-10-23 18:42:40,225 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:42:40,227 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:42:40,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:42:40,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:42:40,237 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:42:40,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:40" (1/1) ... [2018-10-23 18:42:40,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@389a53d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40, skipping insertion in model container [2018-10-23 18:42:40,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:40" (1/1) ... [2018-10-23 18:42:40,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:42:40,495 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:42:42,409 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:42:42,414 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:42:43,455 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:42:43,511 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:42:43,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:43 WrapperNode [2018-10-23 18:42:43,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:42:43,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:42:43,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:42:43,513 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:42:43,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:43" (1/1) ... [2018-10-23 18:42:43,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:43" (1/1) ... [2018-10-23 18:42:44,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:42:44,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:42:44,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:42:44,758 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:42:44,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:43" (1/1) ... [2018-10-23 18:42:44,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:43" (1/1) ... [2018-10-23 18:42:44,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:43" (1/1) ... [2018-10-23 18:42:44,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:43" (1/1) ... [2018-10-23 18:42:45,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:43" (1/1) ... [2018-10-23 18:42:45,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:43" (1/1) ... [2018-10-23 18:42:45,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:43" (1/1) ... [2018-10-23 18:42:45,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:42:45,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:42:45,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:42:45,520 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:42:45,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:43" (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 18:42:45,590 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:42:45,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:42:45,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:43:02,086 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:43:02,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:02 BoogieIcfgContainer [2018-10-23 18:43:02,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:43:02,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:43:02,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:43:02,092 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:43:02,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:42:40" (1/3) ... [2018-10-23 18:43:02,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311dbd55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:02, skipping insertion in model container [2018-10-23 18:43:02,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:43" (2/3) ... [2018-10-23 18:43:02,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311dbd55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:02, skipping insertion in model container [2018-10-23 18:43:02,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:02" (3/3) ... [2018-10-23 18:43:02,099 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label50_false-unreach-call.c [2018-10-23 18:43:02,109 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:43:02,125 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:43:02,141 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:43:02,197 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:43:02,198 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:43:02,198 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:43:02,198 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:43:02,199 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:43:02,199 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:43:02,199 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:43:02,199 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:43:02,199 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:43:02,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-23 18:43:02,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-23 18:43:02,282 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:43:02,284 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] [2018-10-23 18:43:02,287 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:43:02,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:43:02,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1407492386, now seen corresponding path program 1 times [2018-10-23 18:43:02,296 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:43:02,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:43:02,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:43:02,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:43:02,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:43:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:43:02,653 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 18:43:02,655 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:43:02,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:43:02,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:43:02,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:43:02,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:43:02,676 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-23 18:43:28,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:43:28,763 INFO L93 Difference]: Finished difference Result 6322 states and 12078 transitions. [2018-10-23 18:43:28,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:43:28,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-10-23 18:43:28,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:43:28,829 INFO L225 Difference]: With dead ends: 6322 [2018-10-23 18:43:28,829 INFO L226 Difference]: Without dead ends: 4566 [2018-10-23 18:43:28,839 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 18:43:28,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4566 states. [2018-10-23 18:43:29,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4566 to 4562. [2018-10-23 18:43:29,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4562 states. [2018-10-23 18:43:29,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4562 states to 4562 states and 7763 transitions. [2018-10-23 18:43:29,054 INFO L78 Accepts]: Start accepts. Automaton has 4562 states and 7763 transitions. Word has length 21 [2018-10-23 18:43:29,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:43:29,054 INFO L481 AbstractCegarLoop]: Abstraction has 4562 states and 7763 transitions. [2018-10-23 18:43:29,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:43:29,054 INFO L276 IsEmpty]: Start isEmpty. Operand 4562 states and 7763 transitions. [2018-10-23 18:43:29,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-23 18:43:29,060 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:43:29,060 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:43:29,061 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:43:29,061 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:43:29,061 INFO L82 PathProgramCache]: Analyzing trace with hash -540128311, now seen corresponding path program 1 times [2018-10-23 18:43:29,061 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:43:29,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:43:29,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:43:29,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:43:29,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:43:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:43:29,451 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:43:29,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:43:29,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:43:29,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:43:29,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:43:29,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:43:29,457 INFO L87 Difference]: Start difference. First operand 4562 states and 7763 transitions. Second operand 4 states. [2018-10-23 18:44:00,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:44:00,361 INFO L93 Difference]: Finished difference Result 17536 states and 30099 transitions. [2018-10-23 18:44:00,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:44:00,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2018-10-23 18:44:00,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:44:00,429 INFO L225 Difference]: With dead ends: 17536 [2018-10-23 18:44:00,430 INFO L226 Difference]: Without dead ends: 12976 [2018-10-23 18:44:00,439 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 18:44:00,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12976 states. [2018-10-23 18:44:00,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12976 to 8660. [2018-10-23 18:44:00,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8660 states. [2018-10-23 18:44:00,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8660 states to 8660 states and 14380 transitions. [2018-10-23 18:44:00,629 INFO L78 Accepts]: Start accepts. Automaton has 8660 states and 14380 transitions. Word has length 91 [2018-10-23 18:44:00,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:44:00,630 INFO L481 AbstractCegarLoop]: Abstraction has 8660 states and 14380 transitions. [2018-10-23 18:44:00,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:44:00,630 INFO L276 IsEmpty]: Start isEmpty. Operand 8660 states and 14380 transitions. [2018-10-23 18:44:00,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-23 18:44:00,634 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:44:00,635 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:44:00,635 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:44:00,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:44:00,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1353721238, now seen corresponding path program 1 times [2018-10-23 18:44:00,636 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:44:00,636 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:44:00,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:44:00,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:44:00,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:44:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:44:00,958 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:44:00,959 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:44:00,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:44:00,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:44:00,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:44:00,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:44:00,960 INFO L87 Difference]: Start difference. First operand 8660 states and 14380 transitions. Second operand 4 states. [2018-10-23 18:44:21,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:44:21,980 INFO L93 Difference]: Finished difference Result 33813 states and 56473 transitions. [2018-10-23 18:44:21,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:44:21,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2018-10-23 18:44:21,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:44:22,056 INFO L225 Difference]: With dead ends: 33813 [2018-10-23 18:44:22,057 INFO L226 Difference]: Without dead ends: 25155 [2018-10-23 18:44:22,071 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:44:22,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25155 states. [2018-10-23 18:44:22,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25155 to 16865. [2018-10-23 18:44:22,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16865 states. [2018-10-23 18:44:22,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16865 states to 16865 states and 24314 transitions. [2018-10-23 18:44:22,450 INFO L78 Accepts]: Start accepts. Automaton has 16865 states and 24314 transitions. Word has length 113 [2018-10-23 18:44:22,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:44:22,452 INFO L481 AbstractCegarLoop]: Abstraction has 16865 states and 24314 transitions. [2018-10-23 18:44:22,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:44:22,453 INFO L276 IsEmpty]: Start isEmpty. Operand 16865 states and 24314 transitions. [2018-10-23 18:44:22,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-23 18:44:22,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:44:22,461 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:44:22,461 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:44:22,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:44:22,461 INFO L82 PathProgramCache]: Analyzing trace with hash 2048785476, now seen corresponding path program 1 times [2018-10-23 18:44:22,461 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:44:22,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:44:22,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:44:22,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:44:22,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:44:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:44:22,778 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:44:22,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:44:22,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:44:22,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:44:22,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:44:22,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:44:22,780 INFO L87 Difference]: Start difference. First operand 16865 states and 24314 transitions. Second operand 4 states. [2018-10-23 18:44:44,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:44:44,719 INFO L93 Difference]: Finished difference Result 65426 states and 94868 transitions. [2018-10-23 18:44:44,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:44:44,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2018-10-23 18:44:44,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:44:44,821 INFO L225 Difference]: With dead ends: 65426 [2018-10-23 18:44:44,821 INFO L226 Difference]: Without dead ends: 48563 [2018-10-23 18:44:44,853 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 18:44:44,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48563 states. [2018-10-23 18:44:45,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48563 to 48550. [2018-10-23 18:44:45,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48550 states. [2018-10-23 18:44:45,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48550 states to 48550 states and 63472 transitions. [2018-10-23 18:44:45,560 INFO L78 Accepts]: Start accepts. Automaton has 48550 states and 63472 transitions. Word has length 122 [2018-10-23 18:44:45,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:44:45,561 INFO L481 AbstractCegarLoop]: Abstraction has 48550 states and 63472 transitions. [2018-10-23 18:44:45,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:44:45,561 INFO L276 IsEmpty]: Start isEmpty. Operand 48550 states and 63472 transitions. [2018-10-23 18:44:45,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-23 18:44:45,564 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:44:45,564 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:44:45,564 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:44:45,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:44:45,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1069929104, now seen corresponding path program 1 times [2018-10-23 18:44:45,565 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:44:45,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:44:45,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:44:45,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:44:45,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:44:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:44:45,937 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-23 18:44:45,937 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:44:45,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:44:45,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:44:45,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:44:45,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:44:45,939 INFO L87 Difference]: Start difference. First operand 48550 states and 63472 transitions. Second operand 4 states. [2018-10-23 18:45:07,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:45:07,010 INFO L93 Difference]: Finished difference Result 112127 states and 144774 transitions. [2018-10-23 18:45:07,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:45:07,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 184 [2018-10-23 18:45:07,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:45:07,091 INFO L225 Difference]: With dead ends: 112127 [2018-10-23 18:45:07,091 INFO L226 Difference]: Without dead ends: 63579 [2018-10-23 18:45:07,152 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 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 18:45:07,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63579 states. [2018-10-23 18:45:07,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63579 to 63570. [2018-10-23 18:45:07,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63570 states. [2018-10-23 18:45:07,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63570 states to 63570 states and 77358 transitions. [2018-10-23 18:45:07,917 INFO L78 Accepts]: Start accepts. Automaton has 63570 states and 77358 transitions. Word has length 184 [2018-10-23 18:45:07,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:45:07,917 INFO L481 AbstractCegarLoop]: Abstraction has 63570 states and 77358 transitions. [2018-10-23 18:45:07,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:45:07,917 INFO L276 IsEmpty]: Start isEmpty. Operand 63570 states and 77358 transitions. [2018-10-23 18:45:07,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 758 [2018-10-23 18:45:07,939 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:45:07,940 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:45:07,940 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:45:07,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:45:07,941 INFO L82 PathProgramCache]: Analyzing trace with hash -134132952, now seen corresponding path program 1 times [2018-10-23 18:45:07,941 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:45:07,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:45:07,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:45:07,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:45:07,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:45:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:45:08,839 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-23 18:45:09,098 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2018-10-23 18:45:09,222 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 26 [2018-10-23 18:45:10,780 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-10-23 18:45:10,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:45:10,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-23 18:45:10,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 18:45:10,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 18:45:10,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:45:10,783 INFO L87 Difference]: Start difference. First operand 63570 states and 77358 transitions. Second operand 8 states. [2018-10-23 18:45:34,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:45:34,016 INFO L93 Difference]: Finished difference Result 174483 states and 212363 transitions. [2018-10-23 18:45:34,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-23 18:45:34,017 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 757 [2018-10-23 18:45:34,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:45:34,152 INFO L225 Difference]: With dead ends: 174483 [2018-10-23 18:45:34,152 INFO L226 Difference]: Without dead ends: 110915 [2018-10-23 18:45:34,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-10-23 18:45:34,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110915 states. [2018-10-23 18:45:35,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110915 to 64936. [2018-10-23 18:45:35,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64936 states. [2018-10-23 18:45:35,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64936 states to 64936 states and 78730 transitions. [2018-10-23 18:45:35,774 INFO L78 Accepts]: Start accepts. Automaton has 64936 states and 78730 transitions. Word has length 757 [2018-10-23 18:45:35,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:45:35,776 INFO L481 AbstractCegarLoop]: Abstraction has 64936 states and 78730 transitions. [2018-10-23 18:45:35,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 18:45:35,776 INFO L276 IsEmpty]: Start isEmpty. Operand 64936 states and 78730 transitions. [2018-10-23 18:45:35,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 877 [2018-10-23 18:45:35,813 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:45:35,814 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:45:35,814 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:45:35,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:45:35,815 INFO L82 PathProgramCache]: Analyzing trace with hash -76367971, now seen corresponding path program 1 times [2018-10-23 18:45:35,815 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:45:35,815 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:45:35,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:45:35,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:45:35,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:45:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:45:36,988 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2018-10-23 18:45:36,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:45:36,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 18:45:36,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:45:36,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:45:36,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:45:36,992 INFO L87 Difference]: Start difference. First operand 64936 states and 78730 transitions. Second operand 5 states. [2018-10-23 18:46:06,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:46:06,458 INFO L93 Difference]: Finished difference Result 229770 states and 282817 transitions. [2018-10-23 18:46:06,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:46:06,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 876 [2018-10-23 18:46:06,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:46:06,659 INFO L225 Difference]: With dead ends: 229770 [2018-10-23 18:46:06,659 INFO L226 Difference]: Without dead ends: 166202 [2018-10-23 18:46:06,728 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:46:07,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166202 states. [2018-10-23 18:46:08,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166202 to 127786. [2018-10-23 18:46:08,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127786 states. [2018-10-23 18:46:08,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127786 states to 127786 states and 154598 transitions. [2018-10-23 18:46:08,596 INFO L78 Accepts]: Start accepts. Automaton has 127786 states and 154598 transitions. Word has length 876 [2018-10-23 18:46:08,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:46:08,597 INFO L481 AbstractCegarLoop]: Abstraction has 127786 states and 154598 transitions. [2018-10-23 18:46:08,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:46:08,598 INFO L276 IsEmpty]: Start isEmpty. Operand 127786 states and 154598 transitions. [2018-10-23 18:46:08,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2018-10-23 18:46:08,611 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:46:08,612 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:46:08,612 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:46:08,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:46:08,613 INFO L82 PathProgramCache]: Analyzing trace with hash -339119137, now seen corresponding path program 1 times [2018-10-23 18:46:08,613 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:46:08,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:46:08,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:46:08,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:46:08,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:46:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:46:09,467 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-23 18:46:09,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:46:09,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:46:09,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:46:09,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:46:09,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:46:09,469 INFO L87 Difference]: Start difference. First operand 127786 states and 154598 transitions. Second operand 4 states. [2018-10-23 18:46:26,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:46:26,370 INFO L93 Difference]: Finished difference Result 254197 states and 307815 transitions. [2018-10-23 18:46:26,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:46:26,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 934 [2018-10-23 18:46:26,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:46:26,530 INFO L225 Difference]: With dead ends: 254197 [2018-10-23 18:46:26,530 INFO L226 Difference]: Without dead ends: 127779 [2018-10-23 18:46:26,606 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:46:26,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127779 states. [2018-10-23 18:46:28,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127779 to 116844. [2018-10-23 18:46:28,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116844 states. [2018-10-23 18:46:28,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116844 states to 116844 states and 134216 transitions. [2018-10-23 18:46:28,495 INFO L78 Accepts]: Start accepts. Automaton has 116844 states and 134216 transitions. Word has length 934 [2018-10-23 18:46:28,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:46:28,496 INFO L481 AbstractCegarLoop]: Abstraction has 116844 states and 134216 transitions. [2018-10-23 18:46:28,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:46:28,497 INFO L276 IsEmpty]: Start isEmpty. Operand 116844 states and 134216 transitions. [2018-10-23 18:46:28,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2018-10-23 18:46:28,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:46:28,512 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:46:28,513 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:46:28,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:46:28,513 INFO L82 PathProgramCache]: Analyzing trace with hash -315963517, now seen corresponding path program 1 times [2018-10-23 18:46:28,513 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:46:28,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:46:28,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:46:28,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:46:28,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:46:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:46:29,603 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2018-10-23 18:46:29,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:46:29,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:46:29,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:46:29,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:46:29,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:46:29,605 INFO L87 Difference]: Start difference. First operand 116844 states and 134216 transitions. Second operand 3 states. Received shutdown request... [2018-10-23 18:46:39,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:46:39,136 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:46:39,142 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:46:39,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:46:39 BoogieIcfgContainer [2018-10-23 18:46:39,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:46:39,143 INFO L168 Benchmark]: Toolchain (without parser) took 238917.72 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -526.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-23 18:46:39,145 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 18:46:39,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3283.80 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: 395.4 MB). Peak memory consumption was 395.4 MB. Max. memory is 7.1 GB. [2018-10-23 18:46:39,146 INFO L168 Benchmark]: Boogie Procedure Inliner took 1244.85 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 878.2 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. [2018-10-23 18:46:39,147 INFO L168 Benchmark]: Boogie Preprocessor took 761.26 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: 101.1 MB). Peak memory consumption was 101.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:46:39,148 INFO L168 Benchmark]: RCFGBuilder took 16567.89 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 271.6 MB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 512.8 MB). Peak memory consumption was 784.4 MB. Max. memory is 7.1 GB. [2018-10-23 18:46:39,149 INFO L168 Benchmark]: TraceAbstraction took 217054.47 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 1.6 GB in the beginning and 1.9 GB in the end (delta: -386.9 MB). Peak memory consumption was 789.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:46:39,155 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 3283.80 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: 395.4 MB). Peak memory consumption was 395.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1244.85 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 878.2 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 761.26 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: 101.1 MB). Peak memory consumption was 101.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16567.89 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 271.6 MB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 512.8 MB). Peak memory consumption was 784.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217054.47 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 1.6 GB in the beginning and 1.9 GB in the end (delta: -386.9 MB). Peak memory consumption was 789.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 76). Cancelled while BasicCegarLoop was constructing difference of abstraction (116844states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (91884 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 216.9s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 201.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 13699 SDtfs, 39219 SDslu, 8901 SDs, 0 SdLazy, 72986 SolverSat, 20085 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 172.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 12 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127786occurred in iteration=7, 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: 7.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 107962 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 4058 NumberOfCodeBlocks, 4058 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 4049 ConstructedInterpolants, 0 QuantifiedInterpolants, 9247238 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 2405/2405 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown