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/Problem19_label36_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 22:00:41,933 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 22:00:41,936 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 22:00:41,952 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 22:00:41,952 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 22:00:41,953 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 22:00:41,956 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 22:00:41,957 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 22:00:41,961 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 22:00:41,965 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 22:00:41,966 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 22:00:41,967 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 22:00:41,971 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 22:00:41,972 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 22:00:41,975 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 22:00:41,976 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 22:00:41,977 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 22:00:41,980 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 22:00:41,985 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 22:00:41,989 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 22:00:41,991 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 22:00:41,993 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 22:00:41,996 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 22:00:41,997 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 22:00:41,997 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 22:00:41,998 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 22:00:41,999 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 22:00:41,999 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 22:00:42,001 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 22:00:42,002 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 22:00:42,002 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 22:00:42,003 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 22:00:42,004 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 22:00:42,004 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 22:00:42,006 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 22:00:42,007 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 22:00:42,007 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 22:00:42,028 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 22:00:42,028 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 22:00:42,029 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 22:00:42,029 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 22:00:42,030 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 22:00:42,030 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 22:00:42,030 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 22:00:42,031 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 22:00:42,031 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 22:00:42,031 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 22:00:42,031 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 22:00:42,031 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 22:00:42,032 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 22:00:42,032 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 22:00:42,032 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 22:00:42,032 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 22:00:42,032 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 22:00:42,033 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 22:00:42,033 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 22:00:42,033 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:00:42,033 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 22:00:42,033 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 22:00:42,034 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 22:00:42,034 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 22:00:42,034 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 22:00:42,034 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 22:00:42,034 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 22:00:42,034 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 22:00:42,093 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 22:00:42,106 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 22:00:42,111 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 22:00:42,113 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 22:00:42,113 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 22:00:42,114 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label36_true-unreach-call.c [2018-11-06 22:00:42,180 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbb7eae40/a40e8d9509554496bf5cde9f11f3b031/FLAG9d68f3b1b [2018-11-06 22:00:43,015 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 22:00:43,015 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label36_true-unreach-call.c [2018-11-06 22:00:43,062 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbb7eae40/a40e8d9509554496bf5cde9f11f3b031/FLAG9d68f3b1b [2018-11-06 22:00:43,081 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbb7eae40/a40e8d9509554496bf5cde9f11f3b031 [2018-11-06 22:00:43,094 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 22:00:43,095 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 22:00:43,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 22:00:43,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 22:00:43,103 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 22:00:43,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:43" (1/1) ... [2018-11-06 22:00:43,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@269019d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:43, skipping insertion in model container [2018-11-06 22:00:43,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:43" (1/1) ... [2018-11-06 22:00:43,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 22:00:43,395 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 22:00:45,382 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:00:45,389 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 22:00:46,571 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:00:46,632 INFO L193 MainTranslator]: Completed translation [2018-11-06 22:00:46,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:46 WrapperNode [2018-11-06 22:00:46,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 22:00:46,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 22:00:46,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 22:00:46,634 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 22:00:46,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:46" (1/1) ... [2018-11-06 22:00:47,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:46" (1/1) ... [2018-11-06 22:00:47,700 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 22:00:47,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 22:00:47,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 22:00:47,701 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 22:00:47,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:46" (1/1) ... [2018-11-06 22:00:47,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:46" (1/1) ... [2018-11-06 22:00:47,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:46" (1/1) ... [2018-11-06 22:00:47,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:46" (1/1) ... [2018-11-06 22:00:48,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:46" (1/1) ... [2018-11-06 22:00:48,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:46" (1/1) ... [2018-11-06 22:00:48,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:46" (1/1) ... [2018-11-06 22:00:48,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 22:00:48,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 22:00:48,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 22:00:48,380 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 22:00:48,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:46" (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 22:00:48,450 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 22:00:48,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 22:00:48,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 22:01:04,917 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 22:01:04,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:01:04 BoogieIcfgContainer [2018-11-06 22:01:04,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 22:01:04,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 22:01:04,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 22:01:04,922 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 22:01:04,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:00:43" (1/3) ... [2018-11-06 22:01:04,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687aaf60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:01:04, skipping insertion in model container [2018-11-06 22:01:04,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:46" (2/3) ... [2018-11-06 22:01:04,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687aaf60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:01:04, skipping insertion in model container [2018-11-06 22:01:04,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:01:04" (3/3) ... [2018-11-06 22:01:04,927 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label36_true-unreach-call.c [2018-11-06 22:01:04,936 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 22:01:04,946 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 22:01:04,963 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 22:01:05,011 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 22:01:05,011 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 22:01:05,012 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 22:01:05,012 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 22:01:05,012 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 22:01:05,012 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 22:01:05,012 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 22:01:05,012 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 22:01:05,012 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 22:01:05,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-11-06 22:01:05,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-06 22:01:05,084 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:01:05,085 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] [2018-11-06 22:01:05,088 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:01:05,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:01:05,095 INFO L82 PathProgramCache]: Analyzing trace with hash 646480794, now seen corresponding path program 1 times [2018-11-06 22:01:05,097 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:01:05,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:01:05,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:05,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:01:05,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:01:05,440 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 22:01:05,443 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:01:05,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:01:05,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:01:05,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:01:05,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:01:05,467 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-11-06 22:01:25,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:01:25,684 INFO L93 Difference]: Finished difference Result 6414 states and 12249 transitions. [2018-11-06 22:01:25,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:01:25,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-11-06 22:01:25,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:01:25,737 INFO L225 Difference]: With dead ends: 6414 [2018-11-06 22:01:25,737 INFO L226 Difference]: Without dead ends: 4658 [2018-11-06 22:01:25,747 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 22:01:25,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2018-11-06 22:01:25,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 4584. [2018-11-06 22:01:25,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4584 states. [2018-11-06 22:01:25,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4584 states to 4584 states and 7858 transitions. [2018-11-06 22:01:25,955 INFO L78 Accepts]: Start accepts. Automaton has 4584 states and 7858 transitions. Word has length 34 [2018-11-06 22:01:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:01:25,956 INFO L480 AbstractCegarLoop]: Abstraction has 4584 states and 7858 transitions. [2018-11-06 22:01:25,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:01:25,956 INFO L276 IsEmpty]: Start isEmpty. Operand 4584 states and 7858 transitions. [2018-11-06 22:01:25,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-06 22:01:25,963 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:01:25,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:01:25,963 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:01:25,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:01:25,964 INFO L82 PathProgramCache]: Analyzing trace with hash 494010614, now seen corresponding path program 1 times [2018-11-06 22:01:25,964 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:01:25,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:01:25,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:25,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:01:25,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:01:26,309 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:01:26,309 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:01:26,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:01:26,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:01:26,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:01:26,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:01:26,312 INFO L87 Difference]: Start difference. First operand 4584 states and 7858 transitions. Second operand 4 states. [2018-11-06 22:01:46,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:01:46,313 INFO L93 Difference]: Finished difference Result 17656 states and 30544 transitions. [2018-11-06 22:01:46,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:01:46,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2018-11-06 22:01:46,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:01:46,374 INFO L225 Difference]: With dead ends: 17656 [2018-11-06 22:01:46,374 INFO L226 Difference]: Without dead ends: 13074 [2018-11-06 22:01:46,382 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 22:01:46,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13074 states. [2018-11-06 22:01:46,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13074 to 13062. [2018-11-06 22:01:46,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13062 states. [2018-11-06 22:01:46,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13062 states to 13062 states and 19136 transitions. [2018-11-06 22:01:46,640 INFO L78 Accepts]: Start accepts. Automaton has 13062 states and 19136 transitions. Word has length 132 [2018-11-06 22:01:46,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:01:46,641 INFO L480 AbstractCegarLoop]: Abstraction has 13062 states and 19136 transitions. [2018-11-06 22:01:46,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:01:46,641 INFO L276 IsEmpty]: Start isEmpty. Operand 13062 states and 19136 transitions. [2018-11-06 22:01:46,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-06 22:01:46,653 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:01:46,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:01:46,655 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:01:46,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:01:46,655 INFO L82 PathProgramCache]: Analyzing trace with hash 518352738, now seen corresponding path program 1 times [2018-11-06 22:01:46,655 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:01:46,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:01:46,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:46,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:01:46,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:01:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:01:46,983 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:01:46,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:01:46,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:01:46,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:01:46,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:01:46,984 INFO L87 Difference]: Start difference. First operand 13062 states and 19136 transitions. Second operand 4 states. [2018-11-06 22:02:05,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:02:05,124 INFO L93 Difference]: Finished difference Result 51011 states and 74956 transitions. [2018-11-06 22:02:05,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:02:05,126 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2018-11-06 22:02:05,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:02:05,220 INFO L225 Difference]: With dead ends: 51011 [2018-11-06 22:02:05,220 INFO L226 Difference]: Without dead ends: 37951 [2018-11-06 22:02:05,237 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 22:02:05,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37951 states. [2018-11-06 22:02:05,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37951 to 25353. [2018-11-06 22:02:05,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25353 states. [2018-11-06 22:02:05,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25353 states to 25353 states and 35535 transitions. [2018-11-06 22:02:05,794 INFO L78 Accepts]: Start accepts. Automaton has 25353 states and 35535 transitions. Word has length 140 [2018-11-06 22:02:05,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:02:05,796 INFO L480 AbstractCegarLoop]: Abstraction has 25353 states and 35535 transitions. [2018-11-06 22:02:05,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:02:05,796 INFO L276 IsEmpty]: Start isEmpty. Operand 25353 states and 35535 transitions. [2018-11-06 22:02:05,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-11-06 22:02:05,801 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:02:05,805 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 22:02:05,805 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:02:05,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:02:05,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1150795292, now seen corresponding path program 1 times [2018-11-06 22:02:05,806 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:02:05,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:02:05,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:05,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:02:05,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:02:06,334 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-11-06 22:02:06,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:02:06,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:02:06,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:02:06,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:02:06,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:02:06,336 INFO L87 Difference]: Start difference. First operand 25353 states and 35535 transitions. Second operand 4 states. [2018-11-06 22:02:22,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:02:22,603 INFO L93 Difference]: Finished difference Result 95786 states and 134344 transitions. [2018-11-06 22:02:22,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:02:22,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 334 [2018-11-06 22:02:22,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:02:22,725 INFO L225 Difference]: With dead ends: 95786 [2018-11-06 22:02:22,726 INFO L226 Difference]: Without dead ends: 70435 [2018-11-06 22:02:22,770 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:02:22,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70435 states. [2018-11-06 22:02:23,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70435 to 67697. [2018-11-06 22:02:23,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67697 states. [2018-11-06 22:02:23,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67697 states to 67697 states and 87385 transitions. [2018-11-06 22:02:23,678 INFO L78 Accepts]: Start accepts. Automaton has 67697 states and 87385 transitions. Word has length 334 [2018-11-06 22:02:23,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:02:23,679 INFO L480 AbstractCegarLoop]: Abstraction has 67697 states and 87385 transitions. [2018-11-06 22:02:23,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:02:23,679 INFO L276 IsEmpty]: Start isEmpty. Operand 67697 states and 87385 transitions. [2018-11-06 22:02:23,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-11-06 22:02:23,689 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:02:23,689 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 22:02:23,690 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:02:23,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:02:23,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1878429914, now seen corresponding path program 1 times [2018-11-06 22:02:23,690 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:02:23,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:02:23,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:23,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:02:23,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:02:24,540 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-11-06 22:02:24,541 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:02:24,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:02:24,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:02:24,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:02:24,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:02:24,543 INFO L87 Difference]: Start difference. First operand 67697 states and 87385 transitions. Second operand 4 states. [2018-11-06 22:02:41,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:02:41,005 INFO L93 Difference]: Finished difference Result 240752 states and 308153 transitions. [2018-11-06 22:02:41,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:02:41,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 406 [2018-11-06 22:02:41,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:02:41,224 INFO L225 Difference]: With dead ends: 240752 [2018-11-06 22:02:41,225 INFO L226 Difference]: Without dead ends: 173057 [2018-11-06 22:02:41,308 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 22:02:41,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173057 states. [2018-11-06 22:02:42,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173057 to 170255. [2018-11-06 22:02:42,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170255 states. [2018-11-06 22:02:43,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170255 states to 170255 states and 200828 transitions. [2018-11-06 22:02:43,003 INFO L78 Accepts]: Start accepts. Automaton has 170255 states and 200828 transitions. Word has length 406 [2018-11-06 22:02:43,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:02:43,004 INFO L480 AbstractCegarLoop]: Abstraction has 170255 states and 200828 transitions. [2018-11-06 22:02:43,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:02:43,004 INFO L276 IsEmpty]: Start isEmpty. Operand 170255 states and 200828 transitions. [2018-11-06 22:02:43,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2018-11-06 22:02:43,033 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:02:43,034 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 22:02:43,035 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:02:43,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:02:43,035 INFO L82 PathProgramCache]: Analyzing trace with hash 490606347, now seen corresponding path program 1 times [2018-11-06 22:02:43,035 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:02:43,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:02:43,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:43,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:02:43,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:02:44,639 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-11-06 22:02:44,639 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:02:44,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:02:44,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:02:44,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:02:44,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:02:44,641 INFO L87 Difference]: Start difference. First operand 170255 states and 200828 transitions. Second operand 4 states. [2018-11-06 22:03:00,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:03:00,594 INFO L93 Difference]: Finished difference Result 404730 states and 479067 transitions. [2018-11-06 22:03:00,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:03:00,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 830 [2018-11-06 22:03:00,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:03:00,911 INFO L225 Difference]: With dead ends: 404730 [2018-11-06 22:03:00,912 INFO L226 Difference]: Without dead ends: 235843 [2018-11-06 22:03:01,012 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:03:01,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235843 states. [2018-11-06 22:03:03,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235843 to 220790. [2018-11-06 22:03:03,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220790 states. [2018-11-06 22:03:03,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220790 states to 220790 states and 250791 transitions. [2018-11-06 22:03:03,491 INFO L78 Accepts]: Start accepts. Automaton has 220790 states and 250791 transitions. Word has length 830 [2018-11-06 22:03:03,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:03:03,492 INFO L480 AbstractCegarLoop]: Abstraction has 220790 states and 250791 transitions. [2018-11-06 22:03:03,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:03:03,492 INFO L276 IsEmpty]: Start isEmpty. Operand 220790 states and 250791 transitions. [2018-11-06 22:03:03,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1309 [2018-11-06 22:03:03,634 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:03:03,635 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:03:03,636 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:03:03,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:03:03,637 INFO L82 PathProgramCache]: Analyzing trace with hash 2086295666, now seen corresponding path program 1 times [2018-11-06 22:03:03,637 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:03:03,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:03:03,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:03:03,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:03:03,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:03:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:03:04,953 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-06 22:03:05,469 WARN L179 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-11-06 22:03:06,021 WARN L179 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-11-06 22:03:07,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1598 backedges. 675 proven. 0 refuted. 0 times theorem prover too weak. 923 trivial. 0 not checked. [2018-11-06 22:03:07,700 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:03:07,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 22:03:07,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 22:03:07,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 22:03:07,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 22:03:07,702 INFO L87 Difference]: Start difference. First operand 220790 states and 250791 transitions. Second operand 7 states. [2018-11-06 22:03:32,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:03:32,457 INFO L93 Difference]: Finished difference Result 482575 states and 545011 transitions. [2018-11-06 22:03:32,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 22:03:32,459 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1308 [2018-11-06 22:03:32,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:03:32,793 INFO L225 Difference]: With dead ends: 482575 [2018-11-06 22:03:32,793 INFO L226 Difference]: Without dead ends: 263153 [2018-11-06 22:03:32,901 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-11-06 22:03:33,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263153 states. [2018-11-06 22:03:34,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263153 to 259047. [2018-11-06 22:03:34,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259047 states. [2018-11-06 22:03:36,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259047 states to 259047 states and 290461 transitions. [2018-11-06 22:03:36,591 INFO L78 Accepts]: Start accepts. Automaton has 259047 states and 290461 transitions. Word has length 1308 [2018-11-06 22:03:36,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:03:36,592 INFO L480 AbstractCegarLoop]: Abstraction has 259047 states and 290461 transitions. [2018-11-06 22:03:36,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 22:03:36,592 INFO L276 IsEmpty]: Start isEmpty. Operand 259047 states and 290461 transitions. [2018-11-06 22:03:36,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1350 [2018-11-06 22:03:36,647 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:03:36,649 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, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:03:36,649 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:03:36,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:03:36,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1969188322, now seen corresponding path program 1 times [2018-11-06 22:03:36,650 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:03:36,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:03:36,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:03:36,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:03:36,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:03:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:03:37,866 WARN L179 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-11-06 22:03:41,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 794 proven. 4 refuted. 0 times theorem prover too weak. 694 trivial. 0 not checked. [2018-11-06 22:03:41,453 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:03:41,453 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 22:03:41,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:03:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:03:41,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:03:43,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2018-11-06 22:03:43,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:03:43,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-11-06 22:03:43,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 22:03:43,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 22:03:43,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 22:03:43,681 INFO L87 Difference]: Start difference. First operand 259047 states and 290461 transitions. Second operand 6 states. [2018-11-06 22:04:13,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:04:13,451 INFO L93 Difference]: Finished difference Result 631605 states and 708559 transitions. [2018-11-06 22:04:13,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 22:04:13,452 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1349 [2018-11-06 22:04:13,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:04:13,884 INFO L225 Difference]: With dead ends: 631605 [2018-11-06 22:04:13,885 INFO L226 Difference]: Without dead ends: 362926 [2018-11-06 22:04:14,015 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1358 GetRequests, 1349 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-11-06 22:04:14,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362926 states. [2018-11-06 22:04:23,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362926 to 317752. [2018-11-06 22:04:23,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317752 states. [2018-11-06 22:04:24,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317752 states to 317752 states and 342409 transitions. [2018-11-06 22:04:24,196 INFO L78 Accepts]: Start accepts. Automaton has 317752 states and 342409 transitions. Word has length 1349 [2018-11-06 22:04:24,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:04:24,197 INFO L480 AbstractCegarLoop]: Abstraction has 317752 states and 342409 transitions. [2018-11-06 22:04:24,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 22:04:24,197 INFO L276 IsEmpty]: Start isEmpty. Operand 317752 states and 342409 transitions. [2018-11-06 22:04:24,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1458 [2018-11-06 22:04:24,345 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:04:24,346 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, 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:24,346 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:04:24,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:04:24,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1678392343, now seen corresponding path program 1 times [2018-11-06 22:04:24,347 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:04:24,347 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:04:24,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:04:24,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:04:24,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:04:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-11-06 22:04:27,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 1023 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2018-11-06 22:04:27,546 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:04:27,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:04:27,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:04:27,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:04:27,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:04:27,548 INFO L87 Difference]: Start difference. First operand 317752 states and 342409 transitions. Second operand 4 states. [2018-11-06 22:04:27,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-06 22:04:27,549 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 22:04:27,555 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 22:04:27,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:04:27 BoogieIcfgContainer [2018-11-06 22:04:27,556 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 22:04:27,557 INFO L168 Benchmark]: Toolchain (without parser) took 224462.38 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-06 22:04:27,558 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 22:04:27,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3536.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 401.7 MB). Peak memory consumption was 401.7 MB. Max. memory is 7.1 GB. [2018-11-06 22:04:27,559 INFO L168 Benchmark]: Boogie Procedure Inliner took 1066.37 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 860.4 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2018-11-06 22:04:27,560 INFO L168 Benchmark]: Boogie Preprocessor took 678.41 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 110.5 MB). Peak memory consumption was 110.5 MB. Max. memory is 7.1 GB. [2018-11-06 22:04:27,561 INFO L168 Benchmark]: RCFGBuilder took 16539.04 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 294.6 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -405.2 MB). Peak memory consumption was 818.2 MB. Max. memory is 7.1 GB. [2018-11-06 22:04:27,562 INFO L168 Benchmark]: TraceAbstraction took 202636.96 ms. Allocated memory was 2.7 GB in the beginning and 4.9 GB in the end (delta: 2.2 GB). Free memory was 2.4 GB in the beginning and 2.8 GB in the end (delta: -340.1 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-06 22:04:27,568 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3536.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 401.7 MB). Peak memory consumption was 401.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1066.37 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 860.4 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 678.41 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 110.5 MB). Peak memory consumption was 110.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16539.04 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 294.6 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -405.2 MB). Peak memory consumption was 818.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202636.96 ms. Allocated memory was 2.7 GB in the beginning and 4.9 GB in the end (delta: 2.2 GB). Free memory was 2.4 GB in the beginning and 2.8 GB in the end (delta: -340.1 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 115). Cancelled while BasicCegarLoop was constructing difference of abstraction (317752states) and FLOYD_HOARE automaton (currently 2 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 202.5s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 163.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9304 SDtfs, 40729 SDslu, 3266 SDs, 0 SdLazy, 79273 SolverSat, 19836 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 130.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1398 GetRequests, 1360 SyntacticMatches, 11 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=317752occurred in iteration=8, 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: 19.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 82557 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 7339 NumberOfCodeBlocks, 7339 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 7329 ConstructedInterpolants, 0 QuantifiedInterpolants, 19998415 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1502 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 6963/6967 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown