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_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:59:06,782 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:59:06,784 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:59:06,802 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:59:06,803 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:59:06,804 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:59:06,805 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:59:06,807 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:59:06,809 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:59:06,810 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:59:06,811 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:59:06,811 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:59:06,812 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:59:06,813 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:59:06,814 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:59:06,815 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:59:06,816 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:59:06,818 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:59:06,820 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:59:06,821 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:59:06,822 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:59:06,824 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:59:06,826 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 21:59:06,826 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 21:59:06,827 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 21:59:06,827 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 21:59:06,831 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 21:59:06,832 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 21:59:06,835 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 21:59:06,836 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 21:59:06,836 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 21:59:06,840 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 21:59:06,841 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 21:59:06,841 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 21:59:06,843 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 21:59:06,844 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 21:59:06,844 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 21:59:06,874 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:59:06,874 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:59:06,875 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:59:06,876 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:59:06,877 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:59:06,877 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:59:06,878 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:59:06,878 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:59:06,878 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:59:06,878 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:59:06,878 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:59:06,880 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:59:06,880 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:59:06,880 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:59:06,880 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:59:06,881 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:59:06,881 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:59:06,881 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:59:06,881 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:59:06,881 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:59:06,883 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:59:06,883 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:59:06,883 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:59:06,884 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:59:06,884 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:59:06,884 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:59:06,884 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:59:06,884 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:59:06,943 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:59:06,957 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:59:06,961 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:59:06,962 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:59:06,963 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:59:06,963 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label16_true-unreach-call.c [2018-11-06 21:59:07,028 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40da9888f/7dc2e512093f415c8f08f09d1c94a7cc/FLAG8ad3f6afc [2018-11-06 21:59:07,955 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:59:07,958 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label16_true-unreach-call.c [2018-11-06 21:59:08,015 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40da9888f/7dc2e512093f415c8f08f09d1c94a7cc/FLAG8ad3f6afc [2018-11-06 21:59:08,036 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40da9888f/7dc2e512093f415c8f08f09d1c94a7cc [2018-11-06 21:59:08,050 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:59:08,052 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:59:08,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:59:08,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:59:08,058 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:59:08,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:08" (1/1) ... [2018-11-06 21:59:08,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7293a3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:08, skipping insertion in model container [2018-11-06 21:59:08,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:08" (1/1) ... [2018-11-06 21:59:08,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:59:08,351 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:59:10,326 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:59:10,331 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:59:11,655 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:59:11,708 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:59:11,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11 WrapperNode [2018-11-06 21:59:11,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:59:11,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:59:11,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:59:11,710 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:59:11,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11" (1/1) ... [2018-11-06 21:59:12,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11" (1/1) ... [2018-11-06 21:59:12,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:59:12,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:59:12,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:59:12,784 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:59:12,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11" (1/1) ... [2018-11-06 21:59:12,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11" (1/1) ... [2018-11-06 21:59:12,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11" (1/1) ... [2018-11-06 21:59:12,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11" (1/1) ... [2018-11-06 21:59:13,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11" (1/1) ... [2018-11-06 21:59:13,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11" (1/1) ... [2018-11-06 21:59:13,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11" (1/1) ... [2018-11-06 21:59:13,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:59:13,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:59:13,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:59:13,511 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:59:13,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11" (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 21:59:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:59:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:59:13,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:59:30,788 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:59:30,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:30 BoogieIcfgContainer [2018-11-06 21:59:30,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:59:30,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:59:30,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:59:30,796 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:59:30,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:59:08" (1/3) ... [2018-11-06 21:59:30,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429b0983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:30, skipping insertion in model container [2018-11-06 21:59:30,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11" (2/3) ... [2018-11-06 21:59:30,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429b0983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:30, skipping insertion in model container [2018-11-06 21:59:30,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:30" (3/3) ... [2018-11-06 21:59:30,801 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label16_true-unreach-call.c [2018-11-06 21:59:30,812 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:59:30,825 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:59:30,842 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:59:30,896 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:59:30,896 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:59:30,896 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:59:30,897 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:59:30,897 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:59:30,897 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:59:30,897 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:59:30,897 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:59:30,897 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:59:30,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-11-06 21:59:30,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-06 21:59:30,967 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:59:30,968 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] [2018-11-06 21:59:30,971 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:59:30,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:59:30,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1704727530, now seen corresponding path program 1 times [2018-11-06 21:59:30,979 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:59:30,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:59:31,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:59:31,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:59:31,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:59:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:59:31,494 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 21:59:31,497 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:59:31,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:59:31,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:59:31,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:59:31,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:59:31,522 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-11-06 21:59:54,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:59:54,976 INFO L93 Difference]: Finished difference Result 6409 states and 12226 transitions. [2018-11-06 21:59:54,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:59:54,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-11-06 21:59:54,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:59:55,045 INFO L225 Difference]: With dead ends: 6409 [2018-11-06 21:59:55,045 INFO L226 Difference]: Without dead ends: 4653 [2018-11-06 21:59:55,056 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 21:59:55,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4653 states. [2018-11-06 21:59:55,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4653 to 4617. [2018-11-06 21:59:55,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4617 states. [2018-11-06 21:59:55,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4617 states to 4617 states and 7623 transitions. [2018-11-06 21:59:55,285 INFO L78 Accepts]: Start accepts. Automaton has 4617 states and 7623 transitions. Word has length 54 [2018-11-06 21:59:55,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:59:55,285 INFO L480 AbstractCegarLoop]: Abstraction has 4617 states and 7623 transitions. [2018-11-06 21:59:55,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:59:55,286 INFO L276 IsEmpty]: Start isEmpty. Operand 4617 states and 7623 transitions. [2018-11-06 21:59:55,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-11-06 21:59:55,295 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:59:55,296 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, 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 21:59:55,296 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:59:55,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:59:55,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1812485294, now seen corresponding path program 1 times [2018-11-06 21:59:55,297 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:59:55,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:59:55,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:59:55,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:59:55,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:59:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:59:55,810 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-11-06 21:59:56,611 WARN L179 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-11-06 21:59:56,792 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 4 [2018-11-06 21:59:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:59:56,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:59:56,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 21:59:56,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 21:59:56,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 21:59:56,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:59:56,968 INFO L87 Difference]: Start difference. First operand 4617 states and 7623 transitions. Second operand 6 states. [2018-11-06 21:59:57,154 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-06 22:00:27,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:00:27,687 INFO L93 Difference]: Finished difference Result 20192 states and 32413 transitions. [2018-11-06 22:00:27,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 22:00:27,688 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-11-06 22:00:27,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:00:27,765 INFO L225 Difference]: With dead ends: 20192 [2018-11-06 22:00:27,765 INFO L226 Difference]: Without dead ends: 15577 [2018-11-06 22:00:27,773 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-06 22:00:27,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15577 states. [2018-11-06 22:00:28,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15577 to 14204. [2018-11-06 22:00:28,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14204 states. [2018-11-06 22:00:28,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14204 states to 14204 states and 19574 transitions. [2018-11-06 22:00:28,039 INFO L78 Accepts]: Start accepts. Automaton has 14204 states and 19574 transitions. Word has length 122 [2018-11-06 22:00:28,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:00:28,040 INFO L480 AbstractCegarLoop]: Abstraction has 14204 states and 19574 transitions. [2018-11-06 22:00:28,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 22:00:28,040 INFO L276 IsEmpty]: Start isEmpty. Operand 14204 states and 19574 transitions. [2018-11-06 22:00:28,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-11-06 22:00:28,057 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:00:28,061 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:28,061 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:00:28,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:00:28,062 INFO L82 PathProgramCache]: Analyzing trace with hash -233182779, now seen corresponding path program 1 times [2018-11-06 22:00:28,062 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:00:28,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:00:28,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:00:28,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:00:28,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:00:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:00:29,387 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-11-06 22:00:29,387 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:00:29,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 22:00:29,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 22:00:29,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 22:00:29,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 22:00:29,389 INFO L87 Difference]: Start difference. First operand 14204 states and 19574 transitions. Second operand 7 states. [2018-11-06 22:00:29,925 WARN L179 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2018-11-06 22:01:01,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:01:01,028 INFO L93 Difference]: Finished difference Result 40712 states and 55789 transitions. [2018-11-06 22:01:01,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 22:01:01,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 340 [2018-11-06 22:01:01,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:01:01,124 INFO L225 Difference]: With dead ends: 40712 [2018-11-06 22:01:01,124 INFO L226 Difference]: Without dead ends: 26510 [2018-11-06 22:01:01,146 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-11-06 22:01:01,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26510 states. [2018-11-06 22:01:01,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26510 to 23774. [2018-11-06 22:01:01,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23774 states. [2018-11-06 22:01:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23774 states to 23774 states and 29481 transitions. [2018-11-06 22:01:01,563 INFO L78 Accepts]: Start accepts. Automaton has 23774 states and 29481 transitions. Word has length 340 [2018-11-06 22:01:01,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:01:01,564 INFO L480 AbstractCegarLoop]: Abstraction has 23774 states and 29481 transitions. [2018-11-06 22:01:01,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 22:01:01,564 INFO L276 IsEmpty]: Start isEmpty. Operand 23774 states and 29481 transitions. [2018-11-06 22:01:01,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-11-06 22:01:01,572 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:01:01,573 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:01:01,573 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:01:01,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:01:01,573 INFO L82 PathProgramCache]: Analyzing trace with hash 2101152607, now seen corresponding path program 1 times [2018-11-06 22:01:01,574 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:01:01,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:01:01,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:01,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:01:01,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:01:02,151 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 103 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-06 22:01:02,152 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:01:02,152 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 22:01:02,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:01:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:01:02,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:01:02,429 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:01:02,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:01:02,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 22:01:02,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:01:02,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:01:02,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:01:02,469 INFO L87 Difference]: Start difference. First operand 23774 states and 29481 transitions. Second operand 4 states. [2018-11-06 22:01:20,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:01:20,946 INFO L93 Difference]: Finished difference Result 79222 states and 101661 transitions. [2018-11-06 22:01:20,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:01:20,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 368 [2018-11-06 22:01:20,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:01:21,064 INFO L225 Difference]: With dead ends: 79222 [2018-11-06 22:01:21,065 INFO L226 Difference]: Without dead ends: 56816 [2018-11-06 22:01:21,096 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 368 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 22:01:21,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56816 states. [2018-11-06 22:01:21,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56816 to 34695. [2018-11-06 22:01:21,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34695 states. [2018-11-06 22:01:21,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34695 states to 34695 states and 44830 transitions. [2018-11-06 22:01:21,783 INFO L78 Accepts]: Start accepts. Automaton has 34695 states and 44830 transitions. Word has length 368 [2018-11-06 22:01:21,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:01:21,784 INFO L480 AbstractCegarLoop]: Abstraction has 34695 states and 44830 transitions. [2018-11-06 22:01:21,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:01:21,785 INFO L276 IsEmpty]: Start isEmpty. Operand 34695 states and 44830 transitions. [2018-11-06 22:01:21,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2018-11-06 22:01:21,796 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:01:21,797 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:01:21,797 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:01:21,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:01:21,798 INFO L82 PathProgramCache]: Analyzing trace with hash 326717111, now seen corresponding path program 1 times [2018-11-06 22:01:21,798 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:01:21,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:01:21,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:21,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:01:21,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:01:22,624 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:01:22,625 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:01:22,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:01:22,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 22:01:22,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 22:01:22,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 22:01:22,626 INFO L87 Difference]: Start difference. First operand 34695 states and 44830 transitions. Second operand 3 states. [2018-11-06 22:01:32,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:01:32,189 INFO L93 Difference]: Finished difference Result 87227 states and 116937 transitions. [2018-11-06 22:01:32,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 22:01:32,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 401 [2018-11-06 22:01:32,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:01:32,259 INFO L225 Difference]: With dead ends: 87227 [2018-11-06 22:01:32,259 INFO L226 Difference]: Without dead ends: 48434 [2018-11-06 22:01:32,303 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 22:01:32,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48434 states. [2018-11-06 22:01:32,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48434 to 48386. [2018-11-06 22:01:32,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48386 states. [2018-11-06 22:01:32,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48386 states to 48386 states and 62301 transitions. [2018-11-06 22:01:32,938 INFO L78 Accepts]: Start accepts. Automaton has 48386 states and 62301 transitions. Word has length 401 [2018-11-06 22:01:32,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:01:32,939 INFO L480 AbstractCegarLoop]: Abstraction has 48386 states and 62301 transitions. [2018-11-06 22:01:32,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 22:01:32,940 INFO L276 IsEmpty]: Start isEmpty. Operand 48386 states and 62301 transitions. [2018-11-06 22:01:32,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2018-11-06 22:01:32,953 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:01:32,954 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:01:32,954 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:01:32,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:01:32,955 INFO L82 PathProgramCache]: Analyzing trace with hash -69213474, now seen corresponding path program 1 times [2018-11-06 22:01:32,955 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:01:32,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:01:32,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:32,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:01:32,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:01:34,000 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 324 proven. 65 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-11-06 22:01:34,001 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:01:34,001 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 22:01:34,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:01:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:01:34,181 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:01:34,506 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 444 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-11-06 22:01:34,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:01:34,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-11-06 22:01:34,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 22:01:34,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 22:01:34,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:01:34,529 INFO L87 Difference]: Start difference. First operand 48386 states and 62301 transitions. Second operand 5 states. [2018-11-06 22:01:53,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:01:53,926 INFO L93 Difference]: Finished difference Result 203613 states and 269958 transitions. [2018-11-06 22:01:53,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 22:01:53,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 524 [2018-11-06 22:01:53,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:01:54,097 INFO L225 Difference]: With dead ends: 203613 [2018-11-06 22:01:54,097 INFO L226 Difference]: Without dead ends: 156595 [2018-11-06 22:01:54,139 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 523 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 22:01:54,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156595 states. [2018-11-06 22:01:55,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156595 to 111203. [2018-11-06 22:01:55,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111203 states. [2018-11-06 22:01:55,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111203 states to 111203 states and 133601 transitions. [2018-11-06 22:01:55,580 INFO L78 Accepts]: Start accepts. Automaton has 111203 states and 133601 transitions. Word has length 524 [2018-11-06 22:01:55,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:01:55,581 INFO L480 AbstractCegarLoop]: Abstraction has 111203 states and 133601 transitions. [2018-11-06 22:01:55,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 22:01:55,581 INFO L276 IsEmpty]: Start isEmpty. Operand 111203 states and 133601 transitions. [2018-11-06 22:01:55,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2018-11-06 22:01:55,642 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:01:55,650 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:01:55,651 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:01:55,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:01:55,652 INFO L82 PathProgramCache]: Analyzing trace with hash -712042280, now seen corresponding path program 1 times [2018-11-06 22:01:55,652 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:01:55,652 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:01:55,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:55,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:01:55,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:01:57,970 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 413 proven. 4 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-11-06 22:01:57,970 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:01:57,971 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 22:01:57,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:01:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:01:58,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:01:59,118 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 417 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-11-06 22:01:59,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:01:59,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-06 22:01:59,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 22:01:59,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 22:01:59,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:01:59,141 INFO L87 Difference]: Start difference. First operand 111203 states and 133601 transitions. Second operand 5 states. [2018-11-06 22:02:19,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:02:19,067 INFO L93 Difference]: Finished difference Result 231968 states and 277242 transitions. [2018-11-06 22:02:19,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 22:02:19,067 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 983 [2018-11-06 22:02:19,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:02:19,189 INFO L225 Difference]: With dead ends: 231968 [2018-11-06 22:02:19,189 INFO L226 Difference]: Without dead ends: 118032 [2018-11-06 22:02:19,240 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 992 GetRequests, 983 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 22:02:19,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118032 states. [2018-11-06 22:02:20,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118032 to 109830. [2018-11-06 22:02:20,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109830 states. [2018-11-06 22:02:20,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109830 states to 109830 states and 123617 transitions. [2018-11-06 22:02:20,189 INFO L78 Accepts]: Start accepts. Automaton has 109830 states and 123617 transitions. Word has length 983 [2018-11-06 22:02:20,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:02:20,189 INFO L480 AbstractCegarLoop]: Abstraction has 109830 states and 123617 transitions. [2018-11-06 22:02:20,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 22:02:20,189 INFO L276 IsEmpty]: Start isEmpty. Operand 109830 states and 123617 transitions. [2018-11-06 22:02:20,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1162 [2018-11-06 22:02:20,260 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:02:20,262 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:02:20,262 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:02:20,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:02:20,263 INFO L82 PathProgramCache]: Analyzing trace with hash 928118561, now seen corresponding path program 1 times [2018-11-06 22:02:20,263 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:02:20,263 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:02:20,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:20,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:02:20,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:02:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 721 proven. 72 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-11-06 22:02:22,424 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:02:22,424 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 22:02:22,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:02:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:02:22,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:02:23,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 721 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-11-06 22:02:23,847 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:02:23,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-11-06 22:02:23,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 22:02:23,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 22:02:23,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:02:23,849 INFO L87 Difference]: Start difference. First operand 109830 states and 123617 transitions. Second operand 5 states. [2018-11-06 22:02:36,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:02:36,358 INFO L93 Difference]: Finished difference Result 283869 states and 320742 transitions. [2018-11-06 22:02:36,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:02:36,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1161 [2018-11-06 22:02:36,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:02:36,540 INFO L225 Difference]: With dead ends: 283869 [2018-11-06 22:02:36,540 INFO L226 Difference]: Without dead ends: 175407 [2018-11-06 22:02:36,605 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1164 GetRequests, 1160 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:02:36,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175407 states. [2018-11-06 22:02:37,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175407 to 172659. [2018-11-06 22:02:37,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172659 states. [2018-11-06 22:02:38,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172659 states to 172659 states and 189940 transitions. [2018-11-06 22:02:38,057 INFO L78 Accepts]: Start accepts. Automaton has 172659 states and 189940 transitions. Word has length 1161 [2018-11-06 22:02:38,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:02:38,059 INFO L480 AbstractCegarLoop]: Abstraction has 172659 states and 189940 transitions. [2018-11-06 22:02:38,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 22:02:38,059 INFO L276 IsEmpty]: Start isEmpty. Operand 172659 states and 189940 transitions. [2018-11-06 22:02:38,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1240 [2018-11-06 22:02:38,093 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:02:38,094 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:02:38,095 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:02:38,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:02:38,095 INFO L82 PathProgramCache]: Analyzing trace with hash 10289664, now seen corresponding path program 1 times [2018-11-06 22:02:38,096 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:02:38,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:02:38,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:38,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:02:38,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:02:40,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1668 backedges. 1217 proven. 0 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2018-11-06 22:02:40,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:02:40,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:02:40,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:02:40,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:02:40,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:02:40,775 INFO L87 Difference]: Start difference. First operand 172659 states and 189940 transitions. Second operand 4 states. [2018-11-06 22:02:53,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:02:53,118 INFO L93 Difference]: Finished difference Result 345321 states and 379903 transitions. [2018-11-06 22:02:53,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:02:53,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1239 [2018-11-06 22:02:53,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:02:53,323 INFO L225 Difference]: With dead ends: 345321 [2018-11-06 22:02:53,323 INFO L226 Difference]: Without dead ends: 169928 [2018-11-06 22:02:53,396 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 22:02:53,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169928 states. [2018-11-06 22:02:54,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169928 to 168551. [2018-11-06 22:02:54,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168551 states. [2018-11-06 22:02:54,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168551 states to 168551 states and 178679 transitions. [2018-11-06 22:02:54,725 INFO L78 Accepts]: Start accepts. Automaton has 168551 states and 178679 transitions. Word has length 1239 [2018-11-06 22:02:54,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:02:54,726 INFO L480 AbstractCegarLoop]: Abstraction has 168551 states and 178679 transitions. [2018-11-06 22:02:54,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:02:54,726 INFO L276 IsEmpty]: Start isEmpty. Operand 168551 states and 178679 transitions. [2018-11-06 22:02:54,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1363 [2018-11-06 22:02:54,753 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:02:54,754 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:02:54,755 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:02:54,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:02:54,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1135251117, now seen corresponding path program 1 times [2018-11-06 22:02:54,755 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:02:54,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:02:54,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:54,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:02:54,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-11-06 22:02:57,418 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2018-11-06 22:02:57,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:02:57,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:02:57,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 22:02:57,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 22:02:57,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 22:02:57,420 INFO L87 Difference]: Start difference. First operand 168551 states and 178679 transitions. Second operand 3 states. [2018-11-06 22:02:57,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-06 22:02:57,421 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 22:02:57,428 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 22:02:57,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:02:57 BoogieIcfgContainer [2018-11-06 22:02:57,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 22:02:57,430 INFO L168 Benchmark]: Toolchain (without parser) took 229379.44 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 51.7 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-06 22:02:57,432 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 22:02:57,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3655.95 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: 402.5 MB). Peak memory consumption was 402.5 MB. Max. memory is 7.1 GB. [2018-11-06 22:02:57,433 INFO L168 Benchmark]: Boogie Procedure Inliner took 1073.50 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 859.8 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. [2018-11-06 22:02:57,434 INFO L168 Benchmark]: Boogie Preprocessor took 727.04 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 97.5 MB). Peak memory consumption was 97.5 MB. Max. memory is 7.1 GB. [2018-11-06 22:02:57,435 INFO L168 Benchmark]: RCFGBuilder took 17278.71 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 308.8 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -374.9 MB). Peak memory consumption was 818.1 MB. Max. memory is 7.1 GB. [2018-11-06 22:02:57,436 INFO L168 Benchmark]: TraceAbstraction took 206636.46 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 2.4 GB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-06 22:02:57,441 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3655.95 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: 402.5 MB). Peak memory consumption was 402.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1073.50 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 859.8 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 727.04 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 97.5 MB). Peak memory consumption was 97.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17278.71 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 308.8 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -374.9 MB). Peak memory consumption was 818.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206636.46 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 2.4 GB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 175]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 175). Cancelled while BasicCegarLoop was constructing difference of abstraction (168551states) and FLOYD_HOARE automaton (currently 2 states, 3 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, 206.5s OverallTime, 10 OverallIterations, 6 TraceHistogramMax, 179.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 13986 SDtfs, 46189 SDslu, 4104 SDs, 0 SdLazy, 100989 SolverSat, 20573 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 145.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3094 GetRequests, 3045 SyntacticMatches, 17 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172659occurred 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: 7.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 84033 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 9590 NumberOfCodeBlocks, 9590 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 9576 ConstructedInterpolants, 0 QuantifiedInterpolants, 21407347 SizeOfPredicates, 6 NumberOfNonLiveVariables, 3491 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 14 InterpolantComputations, 10 PerfectInterpolantSequences, 7284/7429 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown