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/Problem13_label25_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:05:05,989 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:05:05,991 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:05:06,003 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:05:06,004 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:05:06,005 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:05:06,006 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:05:06,008 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:05:06,011 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:05:06,012 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:05:06,013 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:05:06,013 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:05:06,015 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:05:06,018 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:05:06,021 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:05:06,025 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:05:06,026 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:05:06,031 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:05:06,035 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:05:06,037 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:05:06,040 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:05:06,041 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:05:06,045 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 18:05:06,059 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 18:05:06,087 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:05:06,087 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:05:06,089 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:05:06,089 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:05:06,090 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:05:06,090 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:05:06,091 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:05:06,091 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:05:06,091 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:05:06,091 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:05:06,091 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:05:06,092 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:05:06,092 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:05:06,092 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:05:06,092 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:05:06,093 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:05:06,094 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:05:06,094 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:05:06,094 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:05:06,094 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:05:06,095 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:05:06,095 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:05:06,095 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:05:06,095 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:05:06,095 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:05:06,096 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:05:06,096 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:05:06,096 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:05:06,150 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:05:06,163 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:05:06,166 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:05:06,168 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:05:06,168 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:05:06,169 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label25_false-unreach-call.c [2018-10-23 18:05:06,225 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5ad927804/057f23100b1b4543bf7c5ed4a0ea1b60/FLAGbb2193b66 [2018-10-23 18:05:07,150 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:05:07,152 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label25_false-unreach-call.c [2018-10-23 18:05:07,190 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5ad927804/057f23100b1b4543bf7c5ed4a0ea1b60/FLAGbb2193b66 [2018-10-23 18:05:07,209 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5ad927804/057f23100b1b4543bf7c5ed4a0ea1b60 [2018-10-23 18:05:07,223 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:05:07,224 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:05:07,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:05:07,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:05:07,231 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:05:07,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:05:07" (1/1) ... [2018-10-23 18:05:07,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70bfb81c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:07, skipping insertion in model container [2018-10-23 18:05:07,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:05:07" (1/1) ... [2018-10-23 18:05:07,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:05:07,435 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:05:08,903 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:05:08,908 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:05:09,732 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:05:09,774 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:05:09,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:09 WrapperNode [2018-10-23 18:05:09,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:05:09,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:05:09,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:05:09,777 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:05:09,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:09" (1/1) ... [2018-10-23 18:05:09,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:09" (1/1) ... [2018-10-23 18:05:10,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:05:10,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:05:10,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:05:10,578 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:05:10,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:09" (1/1) ... [2018-10-23 18:05:10,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:09" (1/1) ... [2018-10-23 18:05:10,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:09" (1/1) ... [2018-10-23 18:05:10,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:09" (1/1) ... [2018-10-23 18:05:10,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:09" (1/1) ... [2018-10-23 18:05:10,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:09" (1/1) ... [2018-10-23 18:05:10,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:09" (1/1) ... [2018-10-23 18:05:11,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:05:11,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:05:11,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:05:11,041 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:05:11,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:09" (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 18:05:11,115 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:05:11,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:05:11,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:05:27,861 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:05:27,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:05:27 BoogieIcfgContainer [2018-10-23 18:05:27,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:05:27,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:05:27,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:05:27,868 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:05:27,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:05:07" (1/3) ... [2018-10-23 18:05:27,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d8cc416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:05:27, skipping insertion in model container [2018-10-23 18:05:27,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:09" (2/3) ... [2018-10-23 18:05:27,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d8cc416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:05:27, skipping insertion in model container [2018-10-23 18:05:27,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:05:27" (3/3) ... [2018-10-23 18:05:27,872 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label25_false-unreach-call.c [2018-10-23 18:05:27,883 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:05:27,900 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:05:27,919 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:05:27,981 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:05:27,982 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:05:27,982 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:05:27,982 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:05:27,982 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:05:27,982 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:05:27,983 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:05:27,983 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:05:27,983 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:05:28,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-23 18:05:28,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-23 18:05:28,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:05:28,040 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] [2018-10-23 18:05:28,042 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:05:28,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:05:28,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1155896462, now seen corresponding path program 1 times [2018-10-23 18:05:28,051 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:05:28,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:05:28,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:28,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:05:28,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:05:28,480 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 18:05:28,483 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:05:28,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:05:28,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:05:28,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:05:28,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:05:28,506 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-23 18:05:44,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:05:44,996 INFO L93 Difference]: Finished difference Result 3863 states and 7261 transitions. [2018-10-23 18:05:44,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:05:44,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-10-23 18:05:44,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:05:45,041 INFO L225 Difference]: With dead ends: 3863 [2018-10-23 18:05:45,041 INFO L226 Difference]: Without dead ends: 2757 [2018-10-23 18:05:45,051 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 18:05:45,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2018-10-23 18:05:45,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2736. [2018-10-23 18:05:45,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2018-10-23 18:05:45,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4486 transitions. [2018-10-23 18:05:45,217 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4486 transitions. Word has length 24 [2018-10-23 18:05:45,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:05:45,218 INFO L481 AbstractCegarLoop]: Abstraction has 2736 states and 4486 transitions. [2018-10-23 18:05:45,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:05:45,218 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4486 transitions. [2018-10-23 18:05:45,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-23 18:05:45,223 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:05:45,224 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:45,224 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:05:45,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:05:45,225 INFO L82 PathProgramCache]: Analyzing trace with hash 187330613, now seen corresponding path program 1 times [2018-10-23 18:05:45,225 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:05:45,225 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:05:45,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:45,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:05:45,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:05:45,538 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:05:45,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:05:45,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:05:45,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:05:45,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:05:45,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:05:45,541 INFO L87 Difference]: Start difference. First operand 2736 states and 4486 transitions. Second operand 4 states. [2018-10-23 18:06:01,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:06:01,755 INFO L93 Difference]: Finished difference Result 10268 states and 17048 transitions. [2018-10-23 18:06:01,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:06:01,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2018-10-23 18:06:01,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:06:01,802 INFO L225 Difference]: With dead ends: 10268 [2018-10-23 18:06:01,802 INFO L226 Difference]: Without dead ends: 7534 [2018-10-23 18:06:01,810 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:06:01,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7534 states. [2018-10-23 18:06:01,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7534 to 7528. [2018-10-23 18:06:01,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7528 states. [2018-10-23 18:06:01,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7528 states to 7528 states and 11328 transitions. [2018-10-23 18:06:01,975 INFO L78 Accepts]: Start accepts. Automaton has 7528 states and 11328 transitions. Word has length 111 [2018-10-23 18:06:01,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:06:01,975 INFO L481 AbstractCegarLoop]: Abstraction has 7528 states and 11328 transitions. [2018-10-23 18:06:01,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:06:01,976 INFO L276 IsEmpty]: Start isEmpty. Operand 7528 states and 11328 transitions. [2018-10-23 18:06:01,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-23 18:06:01,984 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:06:01,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:01,984 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:06:01,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:06:01,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1755320724, now seen corresponding path program 1 times [2018-10-23 18:06:01,987 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:06:01,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:06:01,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:01,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:06:01,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:06:02,385 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-23 18:06:02,385 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:06:02,385 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 18:06:02,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:06:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:06:02,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:06:02,549 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:06:02,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:06:02,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 18:06:02,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:06:02,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:06:02,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:06:02,720 INFO L87 Difference]: Start difference. First operand 7528 states and 11328 transitions. Second operand 4 states. [2018-10-23 18:06:17,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:06:17,407 INFO L93 Difference]: Finished difference Result 26960 states and 40379 transitions. [2018-10-23 18:06:17,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:06:17,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2018-10-23 18:06:17,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:06:17,503 INFO L225 Difference]: With dead ends: 26960 [2018-10-23 18:06:17,504 INFO L226 Difference]: Without dead ends: 19434 [2018-10-23 18:06:17,519 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 121 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 18:06:17,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19434 states. [2018-10-23 18:06:17,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19434 to 13833. [2018-10-23 18:06:17,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13833 states. [2018-10-23 18:06:17,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13833 states to 13833 states and 19394 transitions. [2018-10-23 18:06:17,873 INFO L78 Accepts]: Start accepts. Automaton has 13833 states and 19394 transitions. Word has length 121 [2018-10-23 18:06:17,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:06:17,877 INFO L481 AbstractCegarLoop]: Abstraction has 13833 states and 19394 transitions. [2018-10-23 18:06:17,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:06:17,877 INFO L276 IsEmpty]: Start isEmpty. Operand 13833 states and 19394 transitions. [2018-10-23 18:06:17,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-23 18:06:17,885 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:06:17,888 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:17,889 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:06:17,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:06:17,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1595404599, now seen corresponding path program 1 times [2018-10-23 18:06:17,889 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:06:17,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:06:17,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:17,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:06:17,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:06:18,596 WARN L179 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-23 18:06:18,644 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:06:18,644 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:06:18,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:06:18,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:06:18,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:06:18,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:06:18,646 INFO L87 Difference]: Start difference. First operand 13833 states and 19394 transitions. Second operand 4 states. [2018-10-23 18:06:30,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:06:30,880 INFO L93 Difference]: Finished difference Result 34803 states and 47475 transitions. [2018-10-23 18:06:30,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:06:30,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2018-10-23 18:06:30,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:06:30,941 INFO L225 Difference]: With dead ends: 34803 [2018-10-23 18:06:30,942 INFO L226 Difference]: Without dead ends: 20972 [2018-10-23 18:06:30,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:06:30,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20972 states. [2018-10-23 18:06:31,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20972 to 18566. [2018-10-23 18:06:31,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18566 states. [2018-10-23 18:06:31,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18566 states to 18566 states and 24842 transitions. [2018-10-23 18:06:31,239 INFO L78 Accepts]: Start accepts. Automaton has 18566 states and 24842 transitions. Word has length 141 [2018-10-23 18:06:31,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:06:31,239 INFO L481 AbstractCegarLoop]: Abstraction has 18566 states and 24842 transitions. [2018-10-23 18:06:31,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:06:31,241 INFO L276 IsEmpty]: Start isEmpty. Operand 18566 states and 24842 transitions. [2018-10-23 18:06:31,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-23 18:06:31,243 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:06:31,243 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:06:31,245 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:06:31,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:06:31,246 INFO L82 PathProgramCache]: Analyzing trace with hash -481462500, now seen corresponding path program 1 times [2018-10-23 18:06:31,246 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:06:31,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:06:31,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:31,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:06:31,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:06:31,613 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 18:06:32,303 WARN L179 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-23 18:06:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-10-23 18:06:32,369 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:06:32,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:06:32,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:06:32,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:06:32,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:06:32,370 INFO L87 Difference]: Start difference. First operand 18566 states and 24842 transitions. Second operand 5 states. [2018-10-23 18:06:45,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:06:45,024 INFO L93 Difference]: Finished difference Result 55253 states and 73251 transitions. [2018-10-23 18:06:45,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:06:45,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2018-10-23 18:06:45,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:06:45,077 INFO L225 Difference]: With dead ends: 55253 [2018-10-23 18:06:45,077 INFO L226 Difference]: Without dead ends: 36689 [2018-10-23 18:06:45,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:06:45,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36689 states. [2018-10-23 18:06:45,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36689 to 36688. [2018-10-23 18:06:45,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36688 states. [2018-10-23 18:06:46,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36688 states to 36688 states and 45849 transitions. [2018-10-23 18:06:46,059 INFO L78 Accepts]: Start accepts. Automaton has 36688 states and 45849 transitions. Word has length 170 [2018-10-23 18:06:46,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:06:46,060 INFO L481 AbstractCegarLoop]: Abstraction has 36688 states and 45849 transitions. [2018-10-23 18:06:46,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:06:46,060 INFO L276 IsEmpty]: Start isEmpty. Operand 36688 states and 45849 transitions. [2018-10-23 18:06:46,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-10-23 18:06:46,067 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:06:46,068 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:06:46,068 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:06:46,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:06:46,070 INFO L82 PathProgramCache]: Analyzing trace with hash 406770604, now seen corresponding path program 1 times [2018-10-23 18:06:46,070 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:06:46,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:06:46,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:46,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:06:46,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:06:46,528 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-23 18:06:46,609 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:06:46,610 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:06:46,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:06:46,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:06:46,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:06:46,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:06:46,611 INFO L87 Difference]: Start difference. First operand 36688 states and 45849 transitions. Second operand 4 states. [2018-10-23 18:06:58,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:06:58,873 INFO L93 Difference]: Finished difference Result 111190 states and 140637 transitions. [2018-10-23 18:06:58,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:06:58,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 267 [2018-10-23 18:06:58,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:06:58,942 INFO L225 Difference]: With dead ends: 111190 [2018-10-23 18:06:58,942 INFO L226 Difference]: Without dead ends: 64978 [2018-10-23 18:06:58,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 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 18:06:59,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64978 states. [2018-10-23 18:06:59,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64978 to 57884. [2018-10-23 18:06:59,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57884 states. [2018-10-23 18:07:00,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57884 states to 57884 states and 67207 transitions. [2018-10-23 18:07:00,047 INFO L78 Accepts]: Start accepts. Automaton has 57884 states and 67207 transitions. Word has length 267 [2018-10-23 18:07:00,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:07:00,048 INFO L481 AbstractCegarLoop]: Abstraction has 57884 states and 67207 transitions. [2018-10-23 18:07:00,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:07:00,048 INFO L276 IsEmpty]: Start isEmpty. Operand 57884 states and 67207 transitions. [2018-10-23 18:07:00,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-10-23 18:07:00,055 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:07:00,056 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 18:07:00,056 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:07:00,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:07:00,057 INFO L82 PathProgramCache]: Analyzing trace with hash -392787967, now seen corresponding path program 1 times [2018-10-23 18:07:00,057 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:07:00,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:07:00,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:00,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:07:00,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:07:00,564 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-10-23 18:07:00,564 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:07:00,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:07:00,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:07:00,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:07:00,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:07:00,566 INFO L87 Difference]: Start difference. First operand 57884 states and 67207 transitions. Second operand 5 states. [2018-10-23 18:07:22,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:07:22,343 INFO L93 Difference]: Finished difference Result 209019 states and 243063 transitions. [2018-10-23 18:07:22,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:07:22,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2018-10-23 18:07:22,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:07:22,531 INFO L225 Difference]: With dead ends: 209019 [2018-10-23 18:07:22,531 INFO L226 Difference]: Without dead ends: 151925 [2018-10-23 18:07:22,591 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 18:07:22,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151925 states. [2018-10-23 18:07:23,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151925 to 150188. [2018-10-23 18:07:23,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150188 states. [2018-10-23 18:07:23,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150188 states to 150188 states and 170297 transitions. [2018-10-23 18:07:23,980 INFO L78 Accepts]: Start accepts. Automaton has 150188 states and 170297 transitions. Word has length 312 [2018-10-23 18:07:23,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:07:23,980 INFO L481 AbstractCegarLoop]: Abstraction has 150188 states and 170297 transitions. [2018-10-23 18:07:23,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:07:23,981 INFO L276 IsEmpty]: Start isEmpty. Operand 150188 states and 170297 transitions. [2018-10-23 18:07:23,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-10-23 18:07:23,990 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:07:23,990 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 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 18:07:23,991 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:07:23,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:07:23,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1057237503, now seen corresponding path program 1 times [2018-10-23 18:07:23,991 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:07:23,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:07:23,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:23,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:07:23,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:07:24,301 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 350 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-10-23 18:07:24,301 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:07:24,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:07:24,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:07:24,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:07:24,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:07:24,303 INFO L87 Difference]: Start difference. First operand 150188 states and 170297 transitions. Second operand 4 states. [2018-10-23 18:07:35,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:07:35,790 INFO L93 Difference]: Finished difference Result 339028 states and 385935 transitions. [2018-10-23 18:07:35,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:07:35,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 370 [2018-10-23 18:07:35,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:07:36,020 INFO L225 Difference]: With dead ends: 339028 [2018-10-23 18:07:36,020 INFO L226 Difference]: Without dead ends: 189630 [2018-10-23 18:07:36,111 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 18:07:36,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189630 states. [2018-10-23 18:07:38,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189630 to 184069. [2018-10-23 18:07:38,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184069 states. [2018-10-23 18:07:38,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184069 states to 184069 states and 203257 transitions. [2018-10-23 18:07:38,741 INFO L78 Accepts]: Start accepts. Automaton has 184069 states and 203257 transitions. Word has length 370 [2018-10-23 18:07:38,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:07:38,741 INFO L481 AbstractCegarLoop]: Abstraction has 184069 states and 203257 transitions. [2018-10-23 18:07:38,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:07:38,741 INFO L276 IsEmpty]: Start isEmpty. Operand 184069 states and 203257 transitions. [2018-10-23 18:07:38,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-10-23 18:07:38,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:07:38,750 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:07:38,751 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:07:38,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:07:38,751 INFO L82 PathProgramCache]: Analyzing trace with hash 377473173, now seen corresponding path program 1 times [2018-10-23 18:07:38,751 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:07:38,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:07:38,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:38,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:07:38,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:07:39,208 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-10-23 18:07:39,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:07:39,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:07:39,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:07:39,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:07:39,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:07:39,210 INFO L87 Difference]: Start difference. First operand 184069 states and 203257 transitions. Second operand 3 states. [2018-10-23 18:07:46,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:07:46,259 INFO L93 Difference]: Finished difference Result 367346 states and 405720 transitions. [2018-10-23 18:07:46,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:07:46,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 402 [2018-10-23 18:07:46,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:07:46,463 INFO L225 Difference]: With dead ends: 367346 [2018-10-23 18:07:46,463 INFO L226 Difference]: Without dead ends: 184067 [2018-10-23 18:07:46,558 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:07:46,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184067 states. [2018-10-23 18:07:49,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184067 to 181702. [2018-10-23 18:07:49,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181702 states. [2018-10-23 18:07:49,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181702 states to 181702 states and 195201 transitions. [2018-10-23 18:07:49,785 INFO L78 Accepts]: Start accepts. Automaton has 181702 states and 195201 transitions. Word has length 402 [2018-10-23 18:07:49,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:07:49,786 INFO L481 AbstractCegarLoop]: Abstraction has 181702 states and 195201 transitions. [2018-10-23 18:07:49,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:07:49,787 INFO L276 IsEmpty]: Start isEmpty. Operand 181702 states and 195201 transitions. [2018-10-23 18:07:49,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2018-10-23 18:07:49,803 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:07:49,804 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2018-10-23 18:07:49,804 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:07:49,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:07:49,805 INFO L82 PathProgramCache]: Analyzing trace with hash 413175299, now seen corresponding path program 1 times [2018-10-23 18:07:49,805 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:07:49,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:07:49,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:49,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:07:49,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:07:52,036 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 464 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2018-10-23 18:07:52,037 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:07:52,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:07:52,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:07:52,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:07:52,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:07:52,039 INFO L87 Difference]: Start difference. First operand 181702 states and 195201 transitions. Second operand 4 states. [2018-10-23 18:08:07,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:08:07,093 INFO L93 Difference]: Finished difference Result 364967 states and 392685 transitions. [2018-10-23 18:08:07,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:08:07,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 523 [2018-10-23 18:08:07,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:08:07,317 INFO L225 Difference]: With dead ends: 364967 [2018-10-23 18:08:07,317 INFO L226 Difference]: Without dead ends: 184055 [2018-10-23 18:08:07,379 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 5 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 18:08:07,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184055 states. [2018-10-23 18:08:09,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184055 to 182478. [2018-10-23 18:08:09,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182478 states. [2018-10-23 18:08:09,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182478 states to 182478 states and 195894 transitions. [2018-10-23 18:08:09,343 INFO L78 Accepts]: Start accepts. Automaton has 182478 states and 195894 transitions. Word has length 523 [2018-10-23 18:08:09,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:08:09,344 INFO L481 AbstractCegarLoop]: Abstraction has 182478 states and 195894 transitions. [2018-10-23 18:08:09,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:08:09,344 INFO L276 IsEmpty]: Start isEmpty. Operand 182478 states and 195894 transitions. [2018-10-23 18:08:09,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2018-10-23 18:08:09,365 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:08:09,366 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:08:09,366 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:08:09,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:08:09,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1297797700, now seen corresponding path program 1 times [2018-10-23 18:08:09,367 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:08:09,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:08:09,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:09,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:09,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:09,833 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 694 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-10-23 18:08:09,833 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:08:09,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:08:09,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:08:09,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:08:09,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:08:09,835 INFO L87 Difference]: Start difference. First operand 182478 states and 195894 transitions. Second operand 4 states. [2018-10-23 18:08:23,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:08:23,998 INFO L93 Difference]: Finished difference Result 432846 states and 464078 transitions. [2018-10-23 18:08:23,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:08:23,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 577 [2018-10-23 18:08:23,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:08:24,282 INFO L225 Difference]: With dead ends: 432846 [2018-10-23 18:08:24,282 INFO L226 Difference]: Without dead ends: 251158 [2018-10-23 18:08:24,360 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:08:24,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251158 states. [2018-10-23 18:08:26,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251158 to 241590. [2018-10-23 18:08:26,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241590 states. [2018-10-23 18:08:27,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241590 states to 241590 states and 258413 transitions. [2018-10-23 18:08:27,025 INFO L78 Accepts]: Start accepts. Automaton has 241590 states and 258413 transitions. Word has length 577 [2018-10-23 18:08:27,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:08:27,026 INFO L481 AbstractCegarLoop]: Abstraction has 241590 states and 258413 transitions. [2018-10-23 18:08:27,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:08:27,026 INFO L276 IsEmpty]: Start isEmpty. Operand 241590 states and 258413 transitions. [2018-10-23 18:08:27,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2018-10-23 18:08:27,046 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:08:27,046 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:08:27,046 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:08:27,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:08:27,047 INFO L82 PathProgramCache]: Analyzing trace with hash -569222912, now seen corresponding path program 1 times [2018-10-23 18:08:27,047 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:08:27,047 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:08:27,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:27,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:27,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:28,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1098 backedges. 531 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2018-10-23 18:08:28,435 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:08:28,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:08:28,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:08:28,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:08:28,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:08:28,436 INFO L87 Difference]: Start difference. First operand 241590 states and 258413 transitions. Second operand 4 states. [2018-10-23 18:08:42,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:08:42,302 INFO L93 Difference]: Finished difference Result 513116 states and 549598 transitions. [2018-10-23 18:08:42,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:08:42,302 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 610 [2018-10-23 18:08:42,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:08:42,644 INFO L225 Difference]: With dead ends: 513116 [2018-10-23 18:08:42,645 INFO L226 Difference]: Without dead ends: 272316 [2018-10-23 18:08:42,763 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 18:08:42,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272316 states. [2018-10-23 18:08:45,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272316 to 262047. [2018-10-23 18:08:45,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262047 states. [2018-10-23 18:08:45,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262047 states to 262047 states and 276927 transitions. [2018-10-23 18:08:45,775 INFO L78 Accepts]: Start accepts. Automaton has 262047 states and 276927 transitions. Word has length 610 [2018-10-23 18:08:45,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:08:45,776 INFO L481 AbstractCegarLoop]: Abstraction has 262047 states and 276927 transitions. [2018-10-23 18:08:45,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:08:45,776 INFO L276 IsEmpty]: Start isEmpty. Operand 262047 states and 276927 transitions. [2018-10-23 18:08:45,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2018-10-23 18:08:45,803 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:08:45,804 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:08:45,804 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:08:45,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:08:45,804 INFO L82 PathProgramCache]: Analyzing trace with hash -2093655308, now seen corresponding path program 1 times [2018-10-23 18:08:45,805 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:08:45,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:08:45,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:45,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:45,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:47,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1052 backedges. 501 proven. 0 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2018-10-23 18:08:47,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:08:47,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:08:47,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:08:47,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:08:47,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:08:47,365 INFO L87 Difference]: Start difference. First operand 262047 states and 276927 transitions. Second operand 3 states. [2018-10-23 18:08:52,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:08:52,695 INFO L93 Difference]: Finished difference Result 519344 states and 548663 transitions. [2018-10-23 18:08:52,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:08:52,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 709 [2018-10-23 18:08:52,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:08:53,002 INFO L225 Difference]: With dead ends: 519344 [2018-10-23 18:08:53,003 INFO L226 Difference]: Without dead ends: 258084 [2018-10-23 18:08:53,100 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:08:53,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258084 states. [2018-10-23 18:08:55,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258084 to 258084. [2018-10-23 18:08:55,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258084 states. [2018-10-23 18:08:55,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258084 states to 258084 states and 272498 transitions. [2018-10-23 18:08:55,922 INFO L78 Accepts]: Start accepts. Automaton has 258084 states and 272498 transitions. Word has length 709 [2018-10-23 18:08:55,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:08:55,923 INFO L481 AbstractCegarLoop]: Abstraction has 258084 states and 272498 transitions. [2018-10-23 18:08:55,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:08:55,923 INFO L276 IsEmpty]: Start isEmpty. Operand 258084 states and 272498 transitions. [2018-10-23 18:08:55,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2018-10-23 18:08:55,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:08:55,942 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 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] [2018-10-23 18:08:55,943 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:08:55,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:08:55,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1785576049, now seen corresponding path program 1 times [2018-10-23 18:08:55,943 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:08:55,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:08:55,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:55,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:55,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-23 18:09:00,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1598 backedges. 1151 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2018-10-23 18:09:00,935 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:09:00,935 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:09:00,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:09:00,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:09:00,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:09:00,937 INFO L87 Difference]: Start difference. First operand 258084 states and 272498 transitions. Second operand 4 states. [2018-10-23 18:09:00,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-23 18:09:00,938 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:09:00,944 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:09:00,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:09:00 BoogieIcfgContainer [2018-10-23 18:09:00,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:09:00,946 INFO L168 Benchmark]: Toolchain (without parser) took 233721.73 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.5 GB). Free memory was 1.4 GB in the beginning and 4.0 GB in the end (delta: -2.6 GB). Peak memory consumption was 903.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:09:00,948 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:09:00,948 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2549.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-23 18:09:00,949 INFO L168 Benchmark]: Boogie Procedure Inliner took 802.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.2 MB). Free memory was 1.1 GB in the beginning and 2.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2018-10-23 18:09:00,951 INFO L168 Benchmark]: Boogie Preprocessor took 462.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 80.9 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. [2018-10-23 18:09:00,952 INFO L168 Benchmark]: RCFGBuilder took 16821.13 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 242.2 MB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 36.2 MB). Peak memory consumption was 586.7 MB. Max. memory is 7.1 GB. [2018-10-23 18:09:00,954 INFO L168 Benchmark]: TraceAbstraction took 213079.96 ms. Allocated memory was 2.6 GB in the beginning and 5.1 GB in the end (delta: 2.5 GB). Free memory was 2.0 GB in the beginning and 4.0 GB in the end (delta: -2.0 GB). Peak memory consumption was 498.4 MB. Max. memory is 7.1 GB. [2018-10-23 18:09:00,960 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2549.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 802.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.2 MB). Free memory was 1.1 GB in the beginning and 2.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 462.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 80.9 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16821.13 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 242.2 MB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 36.2 MB). Peak memory consumption was 586.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213079.96 ms. Allocated memory was 2.6 GB in the beginning and 5.1 GB in the end (delta: 2.5 GB). Free memory was 2.0 GB in the beginning and 4.0 GB in the end (delta: -2.0 GB). Peak memory consumption was 498.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 81). Cancelled while BasicCegarLoop was constructing difference of abstraction (258084states) and FLOYD_HOARE automaton (currently 2 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 212.9s OverallTime, 14 OverallIterations, 7 TraceHistogramMax, 176.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8916 SDtfs, 27205 SDslu, 3227 SDs, 0 SdLazy, 58252 SolverSat, 14102 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 137.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 185 GetRequests, 144 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=262047occurred in iteration=12, 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: 20.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 46206 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 5179 NumberOfCodeBlocks, 5179 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 5164 ConstructedInterpolants, 0 QuantifiedInterpolants, 4937648 SizeOfPredicates, 1 NumberOfNonLiveVariables, 188 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 15 InterpolantComputations, 14 PerfectInterpolantSequences, 7310/7314 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown