java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:47:40,027 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:47:40,031 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:47:40,044 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:47:40,044 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:47:40,045 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:47:40,047 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:47:40,049 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:47:40,050 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:47:40,051 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:47:40,052 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:47:40,053 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:47:40,054 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:47:40,055 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:47:40,056 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:47:40,057 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:47:40,058 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:47:40,061 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:47:40,065 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:47:40,070 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:47:40,075 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:47:40,076 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:47:40,079 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 21:47:40,098 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 21:47:40,128 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:47:40,128 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:47:40,129 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:47:40,129 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:47:40,133 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:47:40,133 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:47:40,134 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:47:40,134 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:47:40,134 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:47:40,134 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:47:40,134 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:47:40,135 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:47:40,135 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:47:40,135 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:47:40,135 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:47:40,135 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:47:40,136 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:47:40,136 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:47:40,136 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:47:40,136 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:47:40,137 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:47:40,137 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:47:40,137 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:47:40,137 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:47:40,137 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:47:40,138 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:47:40,139 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:47:40,139 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:47:40,205 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:47:40,218 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:47:40,222 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:47:40,223 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:47:40,224 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:47:40,224 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label56_true-unreach-call.c [2018-11-06 21:47:40,282 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54d9f7e4b/4c61eacdac5043ebb4a5daab5f7fdc78/FLAG24818234f [2018-11-06 21:47:41,038 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:47:41,039 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label56_true-unreach-call.c [2018-11-06 21:47:41,076 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54d9f7e4b/4c61eacdac5043ebb4a5daab5f7fdc78/FLAG24818234f [2018-11-06 21:47:41,105 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54d9f7e4b/4c61eacdac5043ebb4a5daab5f7fdc78 [2018-11-06 21:47:41,121 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:47:41,123 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:47:41,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:47:41,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:47:41,130 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:47:41,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:47:41" (1/1) ... [2018-11-06 21:47:41,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39699e92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:41, skipping insertion in model container [2018-11-06 21:47:41,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:47:41" (1/1) ... [2018-11-06 21:47:41,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:47:41,289 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:47:42,367 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:47:42,372 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:47:42,726 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:47:42,753 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:47:42,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:42 WrapperNode [2018-11-06 21:47:42,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:47:42,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:47:42,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:47:42,756 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:47:42,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:42" (1/1) ... [2018-11-06 21:47:42,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:42" (1/1) ... [2018-11-06 21:47:43,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:47:43,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:47:43,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:47:43,244 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:47:43,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:42" (1/1) ... [2018-11-06 21:47:43,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:42" (1/1) ... [2018-11-06 21:47:43,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:42" (1/1) ... [2018-11-06 21:47:43,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:42" (1/1) ... [2018-11-06 21:47:43,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:42" (1/1) ... [2018-11-06 21:47:43,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:42" (1/1) ... [2018-11-06 21:47:43,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:42" (1/1) ... [2018-11-06 21:47:43,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:47:43,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:47:43,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:47:43,489 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:47:43,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:47:43,561 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:47:43,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:47:43,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:47:51,881 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:47:51,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:47:51 BoogieIcfgContainer [2018-11-06 21:47:51,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:47:51,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:47:51,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:47:51,886 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:47:51,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:47:41" (1/3) ... [2018-11-06 21:47:51,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1918ecaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:47:51, skipping insertion in model container [2018-11-06 21:47:51,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:47:42" (2/3) ... [2018-11-06 21:47:51,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1918ecaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:47:51, skipping insertion in model container [2018-11-06 21:47:51,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:47:51" (3/3) ... [2018-11-06 21:47:51,894 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label56_true-unreach-call.c [2018-11-06 21:47:51,905 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:47:51,917 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:47:51,940 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:47:51,990 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:47:51,991 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:47:51,991 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:47:51,991 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:47:51,991 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:47:51,991 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:47:51,992 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:47:51,992 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:47:51,992 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:47:52,030 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-11-06 21:47:52,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-06 21:47:52,042 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:47:52,043 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:47:52,045 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:47:52,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:47:52,052 INFO L82 PathProgramCache]: Analyzing trace with hash -757100326, now seen corresponding path program 1 times [2018-11-06 21:47:52,054 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:47:52,055 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:47:52,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:47:52,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:47:52,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:47:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:47:52,573 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-06 21:47:52,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:47:52,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:47:52,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:47:52,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:47:52,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:47:52,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:47:52,634 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-11-06 21:48:00,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:48:00,902 INFO L93 Difference]: Finished difference Result 2085 states and 3898 transitions. [2018-11-06 21:48:00,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:48:00,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2018-11-06 21:48:00,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:48:00,941 INFO L225 Difference]: With dead ends: 2085 [2018-11-06 21:48:00,942 INFO L226 Difference]: Without dead ends: 1487 [2018-11-06 21:48:00,949 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:48:00,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2018-11-06 21:48:01,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1023. [2018-11-06 21:48:01,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-11-06 21:48:01,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1623 transitions. [2018-11-06 21:48:01,092 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1623 transitions. Word has length 67 [2018-11-06 21:48:01,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:48:01,094 INFO L480 AbstractCegarLoop]: Abstraction has 1023 states and 1623 transitions. [2018-11-06 21:48:01,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:48:01,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1623 transitions. [2018-11-06 21:48:01,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-06 21:48:01,104 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:48:01,105 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:48:01,105 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:48:01,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:48:01,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1868985281, now seen corresponding path program 1 times [2018-11-06 21:48:01,106 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:48:01,106 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:48:01,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:48:01,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:48:01,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:48:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:48:01,408 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:48:01,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:48:01,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:48:01,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:48:01,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:48:01,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:48:01,412 INFO L87 Difference]: Start difference. First operand 1023 states and 1623 transitions. Second operand 4 states. [2018-11-06 21:48:08,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:48:08,134 INFO L93 Difference]: Finished difference Result 2908 states and 4662 transitions. [2018-11-06 21:48:08,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:48:08,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2018-11-06 21:48:08,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:48:08,148 INFO L225 Difference]: With dead ends: 2908 [2018-11-06 21:48:08,148 INFO L226 Difference]: Without dead ends: 1887 [2018-11-06 21:48:08,153 INFO L604 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 [2018-11-06 21:48:08,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2018-11-06 21:48:08,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1887. [2018-11-06 21:48:08,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2018-11-06 21:48:08,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2573 transitions. [2018-11-06 21:48:08,205 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2573 transitions. Word has length 135 [2018-11-06 21:48:08,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:48:08,206 INFO L480 AbstractCegarLoop]: Abstraction has 1887 states and 2573 transitions. [2018-11-06 21:48:08,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:48:08,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2573 transitions. [2018-11-06 21:48:08,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-06 21:48:08,214 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:48:08,214 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:48:08,220 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:48:08,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:48:08,220 INFO L82 PathProgramCache]: Analyzing trace with hash 371846542, now seen corresponding path program 1 times [2018-11-06 21:48:08,220 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:48:08,221 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:48:08,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:48:08,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:48:08,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:48:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:48:08,482 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:48:08,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:48:08,483 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:48:08,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:48:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:48:08,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:48:09,041 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 23 [2018-11-06 21:48:09,279 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:48:09,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:48:09,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-11-06 21:48:09,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:48:09,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:48:09,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:48:09,320 INFO L87 Difference]: Start difference. First operand 1887 states and 2573 transitions. Second operand 7 states. [2018-11-06 21:48:09,520 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-06 21:49:20,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:49:20,535 INFO L93 Difference]: Finished difference Result 17576 states and 24018 transitions. [2018-11-06 21:49:20,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-06 21:49:20,536 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2018-11-06 21:49:20,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:49:20,580 INFO L225 Difference]: With dead ends: 17576 [2018-11-06 21:49:20,581 INFO L226 Difference]: Without dead ends: 9585 [2018-11-06 21:49:20,591 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-11-06 21:49:20,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9585 states. [2018-11-06 21:49:20,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9585 to 9545. [2018-11-06 21:49:20,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9545 states. [2018-11-06 21:49:20,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9545 states to 9545 states and 10988 transitions. [2018-11-06 21:49:20,762 INFO L78 Accepts]: Start accepts. Automaton has 9545 states and 10988 transitions. Word has length 138 [2018-11-06 21:49:20,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:49:20,763 INFO L480 AbstractCegarLoop]: Abstraction has 9545 states and 10988 transitions. [2018-11-06 21:49:20,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 21:49:20,763 INFO L276 IsEmpty]: Start isEmpty. Operand 9545 states and 10988 transitions. [2018-11-06 21:49:20,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-11-06 21:49:20,768 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:49:20,768 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2018-11-06 21:49:20,769 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:49:20,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:49:20,769 INFO L82 PathProgramCache]: Analyzing trace with hash 665234246, now seen corresponding path program 1 times [2018-11-06 21:49:20,769 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:49:20,769 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:49:20,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:20,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:49:20,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:49:21,198 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 341 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:49:21,199 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:49:21,199 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:49:21,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:49:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:49:21,328 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:49:21,458 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-11-06 21:49:21,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:49:21,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-06 21:49:21,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:49:21,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:49:21,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:49:21,481 INFO L87 Difference]: Start difference. First operand 9545 states and 10988 transitions. Second operand 5 states. [2018-11-06 21:49:26,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:49:26,254 INFO L93 Difference]: Finished difference Result 25480 states and 29800 transitions. [2018-11-06 21:49:26,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:49:26,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 300 [2018-11-06 21:49:26,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:49:26,331 INFO L225 Difference]: With dead ends: 25480 [2018-11-06 21:49:26,331 INFO L226 Difference]: Without dead ends: 16364 [2018-11-06 21:49:26,342 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:49:26,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16364 states. [2018-11-06 21:49:26,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16364 to 14660. [2018-11-06 21:49:26,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14660 states. [2018-11-06 21:49:26,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14660 states to 14660 states and 16533 transitions. [2018-11-06 21:49:26,617 INFO L78 Accepts]: Start accepts. Automaton has 14660 states and 16533 transitions. Word has length 300 [2018-11-06 21:49:26,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:49:26,618 INFO L480 AbstractCegarLoop]: Abstraction has 14660 states and 16533 transitions. [2018-11-06 21:49:26,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:49:26,618 INFO L276 IsEmpty]: Start isEmpty. Operand 14660 states and 16533 transitions. [2018-11-06 21:49:26,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-11-06 21:49:26,630 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:49:26,630 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:49:26,630 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:49:26,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:49:26,631 INFO L82 PathProgramCache]: Analyzing trace with hash 819920882, now seen corresponding path program 1 times [2018-11-06 21:49:26,631 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:49:26,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:49:26,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:26,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:49:26,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:49:27,321 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 421 proven. 83 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2018-11-06 21:49:27,321 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:49:27,321 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:49:27,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:49:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:49:27,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:49:27,802 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 22 [2018-11-06 21:49:28,163 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 409 proven. 65 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2018-11-06 21:49:28,195 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:49:28,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-11-06 21:49:28,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:49:28,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:49:28,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:49:28,197 INFO L87 Difference]: Start difference. First operand 14660 states and 16533 transitions. Second operand 7 states. [2018-11-06 21:49:52,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:49:52,695 INFO L93 Difference]: Finished difference Result 58787 states and 68130 transitions. [2018-11-06 21:49:52,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-06 21:49:52,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 402 [2018-11-06 21:49:52,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:49:52,781 INFO L225 Difference]: With dead ends: 58787 [2018-11-06 21:49:52,781 INFO L226 Difference]: Without dead ends: 40691 [2018-11-06 21:49:52,810 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-06 21:49:52,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40691 states. [2018-11-06 21:49:53,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40691 to 33406. [2018-11-06 21:49:53,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33406 states. [2018-11-06 21:49:53,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33406 states to 33406 states and 36606 transitions. [2018-11-06 21:49:53,586 INFO L78 Accepts]: Start accepts. Automaton has 33406 states and 36606 transitions. Word has length 402 [2018-11-06 21:49:53,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:49:53,587 INFO L480 AbstractCegarLoop]: Abstraction has 33406 states and 36606 transitions. [2018-11-06 21:49:53,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 21:49:53,587 INFO L276 IsEmpty]: Start isEmpty. Operand 33406 states and 36606 transitions. [2018-11-06 21:49:53,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2018-11-06 21:49:53,614 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:49:53,615 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 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] [2018-11-06 21:49:53,615 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:49:53,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:49:53,616 INFO L82 PathProgramCache]: Analyzing trace with hash 2068955235, now seen corresponding path program 1 times [2018-11-06 21:49:53,616 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:49:53,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:49:53,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:53,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:49:53,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:49:54,486 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 65 proven. 624 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-11-06 21:49:54,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:49:54,487 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:49:54,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:49:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:49:54,637 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:49:54,964 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2018-11-06 21:49:54,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:49:54,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-11-06 21:49:54,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 21:49:54,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 21:49:54,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:49:54,987 INFO L87 Difference]: Start difference. First operand 33406 states and 36606 transitions. Second operand 8 states. [2018-11-06 21:50:12,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:50:12,123 INFO L93 Difference]: Finished difference Result 111671 states and 122481 transitions. [2018-11-06 21:50:12,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-06 21:50:12,126 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 540 [2018-11-06 21:50:12,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:50:12,246 INFO L225 Difference]: With dead ends: 111671 [2018-11-06 21:50:12,246 INFO L226 Difference]: Without dead ends: 76564 [2018-11-06 21:50:12,299 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 543 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-06 21:50:12,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76564 states. [2018-11-06 21:50:13,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76564 to 62871. [2018-11-06 21:50:13,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62871 states. [2018-11-06 21:50:13,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62871 states to 62871 states and 68154 transitions. [2018-11-06 21:50:13,561 INFO L78 Accepts]: Start accepts. Automaton has 62871 states and 68154 transitions. Word has length 540 [2018-11-06 21:50:13,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:50:13,562 INFO L480 AbstractCegarLoop]: Abstraction has 62871 states and 68154 transitions. [2018-11-06 21:50:13,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 21:50:13,562 INFO L276 IsEmpty]: Start isEmpty. Operand 62871 states and 68154 transitions. [2018-11-06 21:50:13,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2018-11-06 21:50:13,617 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:50:13,618 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 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] [2018-11-06 21:50:13,618 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:50:13,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:50:13,619 INFO L82 PathProgramCache]: Analyzing trace with hash 854803415, now seen corresponding path program 1 times [2018-11-06 21:50:13,619 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:50:13,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:50:13,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:13,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:50:13,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:50:14,230 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 3 [2018-11-06 21:50:14,365 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2018-11-06 21:50:14,365 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:50:14,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:50:14,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:50:14,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:50:14,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:50:14,367 INFO L87 Difference]: Start difference. First operand 62871 states and 68154 transitions. Second operand 4 states. [2018-11-06 21:50:18,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:50:18,241 INFO L93 Difference]: Finished difference Result 140277 states and 151903 transitions. [2018-11-06 21:50:18,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:50:18,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 618 [2018-11-06 21:50:18,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:50:19,069 INFO L225 Difference]: With dead ends: 140277 [2018-11-06 21:50:19,069 INFO L226 Difference]: Without dead ends: 73990 [2018-11-06 21:50:19,107 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:50:19,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73990 states. [2018-11-06 21:50:19,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73990 to 64992. [2018-11-06 21:50:19,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64992 states. [2018-11-06 21:50:19,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64992 states to 64992 states and 70397 transitions. [2018-11-06 21:50:19,882 INFO L78 Accepts]: Start accepts. Automaton has 64992 states and 70397 transitions. Word has length 618 [2018-11-06 21:50:19,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:50:19,883 INFO L480 AbstractCegarLoop]: Abstraction has 64992 states and 70397 transitions. [2018-11-06 21:50:19,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:50:19,884 INFO L276 IsEmpty]: Start isEmpty. Operand 64992 states and 70397 transitions. [2018-11-06 21:50:19,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2018-11-06 21:50:19,958 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:50:19,959 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:50:19,959 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:50:19,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:50:19,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1729640176, now seen corresponding path program 1 times [2018-11-06 21:50:19,960 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:50:19,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:50:19,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:19,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:50:19,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:50:20,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 957 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2018-11-06 21:50:20,629 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:50:20,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:50:20,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:50:20,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:50:20,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:50:20,631 INFO L87 Difference]: Start difference. First operand 64992 states and 70397 transitions. Second operand 3 states. [2018-11-06 21:50:24,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:50:24,720 INFO L93 Difference]: Finished difference Result 135517 states and 146943 transitions. [2018-11-06 21:50:24,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:50:24,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 643 [2018-11-06 21:50:24,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:50:24,788 INFO L225 Difference]: With dead ends: 135517 [2018-11-06 21:50:24,788 INFO L226 Difference]: Without dead ends: 70951 [2018-11-06 21:50:24,826 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:50:24,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70951 states. [2018-11-06 21:50:26,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70951 to 69235. [2018-11-06 21:50:26,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69235 states. [2018-11-06 21:50:26,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69235 states to 69235 states and 74488 transitions. [2018-11-06 21:50:26,563 INFO L78 Accepts]: Start accepts. Automaton has 69235 states and 74488 transitions. Word has length 643 [2018-11-06 21:50:26,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:50:26,564 INFO L480 AbstractCegarLoop]: Abstraction has 69235 states and 74488 transitions. [2018-11-06 21:50:26,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:50:26,569 INFO L276 IsEmpty]: Start isEmpty. Operand 69235 states and 74488 transitions. [2018-11-06 21:50:26,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 712 [2018-11-06 21:50:26,618 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:50:26,619 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:50:26,619 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:50:26,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:50:26,620 INFO L82 PathProgramCache]: Analyzing trace with hash -857584205, now seen corresponding path program 1 times [2018-11-06 21:50:26,620 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:50:26,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:50:26,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:26,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:50:26,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:50:27,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1375 backedges. 995 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-11-06 21:50:27,251 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:50:27,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:50:27,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:50:27,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:50:27,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:50:27,253 INFO L87 Difference]: Start difference. First operand 69235 states and 74488 transitions. Second operand 3 states. [2018-11-06 21:50:29,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:50:29,879 INFO L93 Difference]: Finished difference Result 143568 states and 154744 transitions. [2018-11-06 21:50:29,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:50:29,879 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 711 [2018-11-06 21:50:29,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:50:29,980 INFO L225 Difference]: With dead ends: 143568 [2018-11-06 21:50:29,981 INFO L226 Difference]: Without dead ends: 82441 [2018-11-06 21:50:30,026 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:50:30,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82441 states. [2018-11-06 21:50:30,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82441 to 78607. [2018-11-06 21:50:30,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78607 states. [2018-11-06 21:50:31,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78607 states to 78607 states and 84088 transitions. [2018-11-06 21:50:31,936 INFO L78 Accepts]: Start accepts. Automaton has 78607 states and 84088 transitions. Word has length 711 [2018-11-06 21:50:31,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:50:31,937 INFO L480 AbstractCegarLoop]: Abstraction has 78607 states and 84088 transitions. [2018-11-06 21:50:31,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:50:31,937 INFO L276 IsEmpty]: Start isEmpty. Operand 78607 states and 84088 transitions. [2018-11-06 21:50:31,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2018-11-06 21:50:31,981 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:50:31,982 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:50:31,982 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:50:31,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:50:31,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1904086784, now seen corresponding path program 1 times [2018-11-06 21:50:31,983 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:50:31,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:50:31,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:31,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:50:31,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:50:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-11-06 21:50:32,983 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:50:32,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 21:50:32,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:50:32,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:50:32,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:50:32,985 INFO L87 Difference]: Start difference. First operand 78607 states and 84088 transitions. Second operand 3 states. [2018-11-06 21:50:34,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:50:34,677 INFO L93 Difference]: Finished difference Result 148666 states and 159216 transitions. [2018-11-06 21:50:34,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:50:34,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 825 [2018-11-06 21:50:34,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:50:34,764 INFO L225 Difference]: With dead ends: 148666 [2018-11-06 21:50:34,765 INFO L226 Difference]: Without dead ends: 70486 [2018-11-06 21:50:34,804 INFO L604 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 [2018-11-06 21:50:34,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70486 states. [2018-11-06 21:50:36,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70486 to 62367. [2018-11-06 21:50:36,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62367 states. [2018-11-06 21:50:36,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62367 states to 62367 states and 67122 transitions. [2018-11-06 21:50:36,356 INFO L78 Accepts]: Start accepts. Automaton has 62367 states and 67122 transitions. Word has length 825 [2018-11-06 21:50:36,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:50:36,356 INFO L480 AbstractCegarLoop]: Abstraction has 62367 states and 67122 transitions. [2018-11-06 21:50:36,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:50:36,357 INFO L276 IsEmpty]: Start isEmpty. Operand 62367 states and 67122 transitions. [2018-11-06 21:50:36,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 867 [2018-11-06 21:50:36,399 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:50:36,400 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:50:36,400 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:50:36,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:50:36,401 INFO L82 PathProgramCache]: Analyzing trace with hash -992747960, now seen corresponding path program 1 times [2018-11-06 21:50:36,401 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:50:36,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:50:36,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:36,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:50:36,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:50:37,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1418 backedges. 750 proven. 0 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2018-11-06 21:50:37,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:50:37,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:50:37,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:50:37,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:50:37,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:50:37,081 INFO L87 Difference]: Start difference. First operand 62367 states and 67122 transitions. Second operand 3 states. [2018-11-06 21:50:39,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:50:39,736 INFO L93 Difference]: Finished difference Result 131131 states and 141179 transitions. [2018-11-06 21:50:39,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:50:39,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 866 [2018-11-06 21:50:39,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:50:39,822 INFO L225 Difference]: With dead ends: 131131 [2018-11-06 21:50:39,822 INFO L226 Difference]: Without dead ends: 73456 [2018-11-06 21:50:39,859 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:50:39,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73456 states. [2018-11-06 21:50:41,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73456 to 71736. [2018-11-06 21:50:41,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71736 states. [2018-11-06 21:50:41,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71736 states to 71736 states and 77105 transitions. [2018-11-06 21:50:41,509 INFO L78 Accepts]: Start accepts. Automaton has 71736 states and 77105 transitions. Word has length 866 [2018-11-06 21:50:41,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:50:41,509 INFO L480 AbstractCegarLoop]: Abstraction has 71736 states and 77105 transitions. [2018-11-06 21:50:41,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:50:41,509 INFO L276 IsEmpty]: Start isEmpty. Operand 71736 states and 77105 transitions. [2018-11-06 21:50:41,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2018-11-06 21:50:41,547 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:50:41,547 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:50:41,548 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:50:41,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:50:41,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1322961737, now seen corresponding path program 1 times [2018-11-06 21:50:41,548 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:50:41,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:50:41,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:41,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:50:41,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:50:43,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 748 proven. 344 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-11-06 21:50:43,540 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:50:43,540 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:50:43,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:50:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:50:43,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:50:44,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 666 proven. 83 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2018-11-06 21:50:44,451 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:50:44,451 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2018-11-06 21:50:44,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 21:50:44,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 21:50:44,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-11-06 21:50:44,453 INFO L87 Difference]: Start difference. First operand 71736 states and 77105 transitions. Second operand 9 states. [2018-11-06 21:50:52,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:50:52,798 INFO L93 Difference]: Finished difference Result 146049 states and 156820 transitions. [2018-11-06 21:50:52,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-06 21:50:52,803 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 884 [2018-11-06 21:50:52,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:50:52,881 INFO L225 Difference]: With dead ends: 146049 [2018-11-06 21:50:52,881 INFO L226 Difference]: Without dead ends: 79005 [2018-11-06 21:50:52,919 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 883 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-11-06 21:50:52,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79005 states. [2018-11-06 21:50:53,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79005 to 75996. [2018-11-06 21:50:53,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75996 states. [2018-11-06 21:50:53,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75996 states to 75996 states and 81497 transitions. [2018-11-06 21:50:53,693 INFO L78 Accepts]: Start accepts. Automaton has 75996 states and 81497 transitions. Word has length 884 [2018-11-06 21:50:53,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:50:53,694 INFO L480 AbstractCegarLoop]: Abstraction has 75996 states and 81497 transitions. [2018-11-06 21:50:53,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 21:50:53,694 INFO L276 IsEmpty]: Start isEmpty. Operand 75996 states and 81497 transitions. [2018-11-06 21:50:53,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2018-11-06 21:50:53,738 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:50:53,739 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:50:53,739 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:50:53,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:50:53,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1885645561, now seen corresponding path program 1 times [2018-11-06 21:50:53,740 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:50:53,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:50:53,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:53,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:50:53,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:50:55,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 949 proven. 404 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-11-06 21:50:55,269 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:50:55,269 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:50:55,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:50:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:50:55,525 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:50:55,824 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 397 DAG size of output: 18 [2018-11-06 21:50:58,182 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 68 DAG size of output: 30 [2018-11-06 21:51:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 941 proven. 0 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked. [2018-11-06 21:51:00,419 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:51:00,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2018-11-06 21:51:00,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 21:51:00,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 21:51:00,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:51:00,421 INFO L87 Difference]: Start difference. First operand 75996 states and 81497 transitions. Second operand 8 states. [2018-11-06 21:51:34,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:51:34,410 INFO L93 Difference]: Finished difference Result 188692 states and 202671 transitions. [2018-11-06 21:51:34,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-06 21:51:34,411 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 960 [2018-11-06 21:51:34,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:51:34,529 INFO L225 Difference]: With dead ends: 188692 [2018-11-06 21:51:34,531 INFO L226 Difference]: Without dead ends: 117387 [2018-11-06 21:51:34,578 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 978 GetRequests, 964 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2018-11-06 21:51:34,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117387 states. [2018-11-06 21:51:35,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117387 to 107977. [2018-11-06 21:51:35,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107977 states. [2018-11-06 21:51:36,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107977 states to 107977 states and 113727 transitions. [2018-11-06 21:51:36,067 INFO L78 Accepts]: Start accepts. Automaton has 107977 states and 113727 transitions. Word has length 960 [2018-11-06 21:51:36,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:51:36,067 INFO L480 AbstractCegarLoop]: Abstraction has 107977 states and 113727 transitions. [2018-11-06 21:51:36,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 21:51:36,067 INFO L276 IsEmpty]: Start isEmpty. Operand 107977 states and 113727 transitions. [2018-11-06 21:51:36,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2018-11-06 21:51:36,128 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:51:36,128 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-06 21:51:36,129 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:51:36,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:51:36,129 INFO L82 PathProgramCache]: Analyzing trace with hash 127496370, now seen corresponding path program 1 times [2018-11-06 21:51:36,129 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:51:36,129 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:51:36,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:51:36,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:51:36,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:51:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:51:36,857 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2018-11-06 21:51:37,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 829 proven. 0 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2018-11-06 21:51:37,845 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:51:37,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 21:51:37,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:51:37,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:51:37,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:51:37,847 INFO L87 Difference]: Start difference. First operand 107977 states and 113727 transitions. Second operand 5 states. Received shutdown request... [2018-11-06 21:51:38,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:51:38,980 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 21:51:38,985 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 21:51:38,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:51:38 BoogieIcfgContainer [2018-11-06 21:51:38,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 21:51:38,986 INFO L168 Benchmark]: Toolchain (without parser) took 237864.87 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -379.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-06 21:51:38,987 INFO L168 Benchmark]: CDTParser took 0.26 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. [2018-11-06 21:51:38,988 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1630.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-06 21:51:38,989 INFO L168 Benchmark]: Boogie Procedure Inliner took 487.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -902.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2018-11-06 21:51:38,990 INFO L168 Benchmark]: Boogie Preprocessor took 245.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. [2018-11-06 21:51:38,990 INFO L168 Benchmark]: RCFGBuilder took 8393.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 480.4 MB). Peak memory consumption was 480.4 MB. Max. memory is 7.1 GB. [2018-11-06 21:51:38,991 INFO L168 Benchmark]: TraceAbstraction took 227102.83 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 1.6 GB in the beginning and 1.8 GB in the end (delta: -136.0 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-06 21:51:38,996 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 1630.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 487.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -902.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 245.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8393.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 480.4 MB). Peak memory consumption was 480.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227102.83 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 1.6 GB in the beginning and 1.8 GB in the end (delta: -136.0 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 206]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 206). Cancelled while BasicCegarLoop was constructing difference of abstraction (107977states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (809 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 227.0s OverallTime, 14 OverallIterations, 7 TraceHistogramMax, 193.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4090 SDtfs, 25308 SDslu, 2894 SDs, 0 SdLazy, 57918 SolverSat, 8662 SolverUnsat, 37 SolverUnknown, 0 SolverNotchecked, 171.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3319 GetRequests, 3244 SyntacticMatches, 7 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107977occurred in iteration=13, 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: 12.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 59992 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 13.2s InterpolantComputationTime, 11311 NumberOfCodeBlocks, 11311 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 11291 ConstructedInterpolants, 600 QuantifiedInterpolants, 33089734 SizeOfPredicates, 4 NumberOfNonLiveVariables, 4047 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 20 InterpolantComputations, 12 PerfectInterpolantSequences, 16323/18056 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown