java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:09:48,695 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:09:48,698 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:09:48,716 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:09:48,716 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:09:48,718 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:09:48,720 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:09:48,723 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:09:48,724 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:09:48,725 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:09:48,726 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:09:48,727 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:09:48,728 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:09:48,729 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:09:48,730 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:09:48,731 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:09:48,731 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:09:48,737 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:09:48,741 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:09:48,746 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:09:48,748 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:09:48,752 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:09:48,754 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 17:09:48,769 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 17:09:48,795 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:09:48,795 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:09:48,797 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:09:48,797 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 17:09:48,798 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 17:09:48,798 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 17:09:48,798 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 17:09:48,799 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:09:48,799 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:09:48,799 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:09:48,799 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:09:48,799 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:09:48,799 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:09:48,800 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:09:48,800 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:09:48,800 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:09:48,800 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:09:48,800 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:09:48,802 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:09:48,802 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:09:48,803 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:09:48,803 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:09:48,803 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:09:48,803 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 17:09:48,803 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:09:48,804 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:09:48,804 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:09:48,804 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:09:48,865 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:09:48,880 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:09:48,885 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:09:48,887 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:09:48,887 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:09:48,888 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label49_true-unreach-call.c [2018-10-24 17:09:48,957 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/056bea426/c85aedea16c0417981324390dad3bc63/FLAG7867d4ce0 [2018-10-24 17:09:49,866 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:09:49,868 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label49_true-unreach-call.c [2018-10-24 17:09:49,916 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/056bea426/c85aedea16c0417981324390dad3bc63/FLAG7867d4ce0 [2018-10-24 17:09:49,938 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/056bea426/c85aedea16c0417981324390dad3bc63 [2018-10-24 17:09:49,953 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:09:49,955 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:09:49,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:09:49,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:09:49,962 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:09:49,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:09:49" (1/1) ... [2018-10-24 17:09:49,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eb389a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:49, skipping insertion in model container [2018-10-24 17:09:49,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:09:49" (1/1) ... [2018-10-24 17:09:49,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:09:50,260 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:09:52,424 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:09:52,430 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:09:53,597 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:09:53,647 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:09:53,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:53 WrapperNode [2018-10-24 17:09:53,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:09:53,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:09:53,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:09:53,649 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:09:53,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:53" (1/1) ... [2018-10-24 17:09:53,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:53" (1/1) ... [2018-10-24 17:09:54,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:09:54,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:09:54,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:09:54,987 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:09:54,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:53" (1/1) ... [2018-10-24 17:09:54,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:53" (1/1) ... [2018-10-24 17:09:55,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:53" (1/1) ... [2018-10-24 17:09:55,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:53" (1/1) ... [2018-10-24 17:09:55,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:53" (1/1) ... [2018-10-24 17:09:55,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:53" (1/1) ... [2018-10-24 17:09:55,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:53" (1/1) ... [2018-10-24 17:09:55,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:09:55,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:09:55,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:09:55,816 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:09:55,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:09:55,883 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 17:09:55,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:09:55,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:10:13,827 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:10:13,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:10:13 BoogieIcfgContainer [2018-10-24 17:10:13,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:10:13,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:10:13,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:10:13,836 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:10:13,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:09:49" (1/3) ... [2018-10-24 17:10:13,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a28fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:10:13, skipping insertion in model container [2018-10-24 17:10:13,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:53" (2/3) ... [2018-10-24 17:10:13,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a28fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:10:13, skipping insertion in model container [2018-10-24 17:10:13,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:10:13" (3/3) ... [2018-10-24 17:10:13,845 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label49_true-unreach-call.c [2018-10-24 17:10:13,862 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:10:13,875 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:10:13,893 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:10:13,953 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 17:10:13,953 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:10:13,954 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:10:13,954 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:10:13,954 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:10:13,954 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:10:13,954 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:10:13,954 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:10:13,954 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:10:14,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 17:10:14,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-24 17:10:14,017 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:10:14,018 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] [2018-10-24 17:10:14,020 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:10:14,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:10:14,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1586436998, now seen corresponding path program 1 times [2018-10-24 17:10:14,030 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:10:14,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:10:14,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:14,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:10:14,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:10:14,643 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-24 17:10:15,290 WARN L179 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-24 17:10:15,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:10:15,574 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:10:15,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 17:10:15,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:10:15,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:10:15,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:10:15,598 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 6 states. [2018-10-24 17:11:01,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:11:01,969 INFO L93 Difference]: Finished difference Result 9078 states and 17600 transitions. [2018-10-24 17:11:01,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 17:11:01,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2018-10-24 17:11:01,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:11:02,041 INFO L225 Difference]: With dead ends: 9078 [2018-10-24 17:11:02,042 INFO L226 Difference]: Without dead ends: 7316 [2018-10-24 17:11:02,052 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 17:11:02,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7316 states. [2018-10-24 17:11:02,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7316 to 5899. [2018-10-24 17:11:02,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5899 states. [2018-10-24 17:11:02,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5899 states to 5899 states and 8691 transitions. [2018-10-24 17:11:02,290 INFO L78 Accepts]: Start accepts. Automaton has 5899 states and 8691 transitions. Word has length 43 [2018-10-24 17:11:02,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:11:02,291 INFO L481 AbstractCegarLoop]: Abstraction has 5899 states and 8691 transitions. [2018-10-24 17:11:02,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:11:02,291 INFO L276 IsEmpty]: Start isEmpty. Operand 5899 states and 8691 transitions. [2018-10-24 17:11:02,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-10-24 17:11:02,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:11:02,300 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:11:02,301 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:11:02,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:11:02,302 INFO L82 PathProgramCache]: Analyzing trace with hash -752812192, now seen corresponding path program 1 times [2018-10-24 17:11:02,302 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:11:02,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:11:02,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:02,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:11:02,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:11:02,856 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-10-24 17:11:02,856 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:11:02,856 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:11:02,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:11:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:11:02,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:11:03,090 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:11:03,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:11:03,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-24 17:11:03,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:11:03,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:11:03,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:11:03,118 INFO L87 Difference]: Start difference. First operand 5899 states and 8691 transitions. Second operand 5 states. [2018-10-24 17:11:27,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:11:27,901 INFO L93 Difference]: Finished difference Result 22884 states and 36399 transitions. [2018-10-24 17:11:27,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 17:11:27,902 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 279 [2018-10-24 17:11:27,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:11:27,980 INFO L225 Difference]: With dead ends: 22884 [2018-10-24 17:11:27,981 INFO L226 Difference]: Without dead ends: 16987 [2018-10-24 17:11:27,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:11:28,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16987 states. [2018-10-24 17:11:28,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16987 to 11423. [2018-10-24 17:11:28,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11423 states. [2018-10-24 17:11:28,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11423 states to 11423 states and 16439 transitions. [2018-10-24 17:11:28,257 INFO L78 Accepts]: Start accepts. Automaton has 11423 states and 16439 transitions. Word has length 279 [2018-10-24 17:11:28,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:11:28,259 INFO L481 AbstractCegarLoop]: Abstraction has 11423 states and 16439 transitions. [2018-10-24 17:11:28,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:11:28,259 INFO L276 IsEmpty]: Start isEmpty. Operand 11423 states and 16439 transitions. [2018-10-24 17:11:28,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-10-24 17:11:28,266 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:11:28,267 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, 2, 2, 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] [2018-10-24 17:11:28,267 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:11:28,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:11:28,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1244154395, now seen corresponding path program 1 times [2018-10-24 17:11:28,268 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:11:28,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:11:28,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:28,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:11:28,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:11:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 81 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:11:28,838 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:11:28,838 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 17:11:28,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:11:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:11:28,952 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:11:29,106 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:11:29,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:11:29,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-24 17:11:29,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:11:29,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:11:29,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:11:29,139 INFO L87 Difference]: Start difference. First operand 11423 states and 16439 transitions. Second operand 5 states. [2018-10-24 17:12:07,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:12:07,826 INFO L93 Difference]: Finished difference Result 46433 states and 67120 transitions. [2018-10-24 17:12:07,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:12:07,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 347 [2018-10-24 17:12:07,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:12:07,899 INFO L225 Difference]: With dead ends: 46433 [2018-10-24 17:12:07,900 INFO L226 Difference]: Without dead ends: 29546 [2018-10-24 17:12:07,920 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:12:07,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29546 states. [2018-10-24 17:12:08,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29546 to 29463. [2018-10-24 17:12:08,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29463 states. [2018-10-24 17:12:08,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29463 states to 29463 states and 36254 transitions. [2018-10-24 17:12:08,381 INFO L78 Accepts]: Start accepts. Automaton has 29463 states and 36254 transitions. Word has length 347 [2018-10-24 17:12:08,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:12:08,382 INFO L481 AbstractCegarLoop]: Abstraction has 29463 states and 36254 transitions. [2018-10-24 17:12:08,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:12:08,382 INFO L276 IsEmpty]: Start isEmpty. Operand 29463 states and 36254 transitions. [2018-10-24 17:12:08,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-10-24 17:12:08,389 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:12:08,390 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, 2, 2, 2, 2, 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] [2018-10-24 17:12:08,390 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:12:08,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:12:08,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1128196187, now seen corresponding path program 1 times [2018-10-24 17:12:08,391 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:12:08,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:12:08,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:12:08,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:12:08,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:12:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:12:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 81 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-10-24 17:12:08,935 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:12:08,935 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 17:12:08,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:12:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:12:09,045 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:12:09,134 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:12:09,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:12:09,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 17:12:09,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:12:09,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:12:09,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:12:09,167 INFO L87 Difference]: Start difference. First operand 29463 states and 36254 transitions. Second operand 4 states. [2018-10-24 17:12:34,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:12:34,795 INFO L93 Difference]: Finished difference Result 109776 states and 135570 transitions. [2018-10-24 17:12:34,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:12:34,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 349 [2018-10-24 17:12:34,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:12:34,909 INFO L225 Difference]: With dead ends: 109776 [2018-10-24 17:12:34,910 INFO L226 Difference]: Without dead ends: 80315 [2018-10-24 17:12:34,958 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:12:35,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80315 states. [2018-10-24 17:12:35,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80315 to 52684. [2018-10-24 17:12:35,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52684 states. [2018-10-24 17:12:35,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52684 states to 52684 states and 63622 transitions. [2018-10-24 17:12:35,752 INFO L78 Accepts]: Start accepts. Automaton has 52684 states and 63622 transitions. Word has length 349 [2018-10-24 17:12:35,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:12:35,753 INFO L481 AbstractCegarLoop]: Abstraction has 52684 states and 63622 transitions. [2018-10-24 17:12:35,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:12:35,753 INFO L276 IsEmpty]: Start isEmpty. Operand 52684 states and 63622 transitions. [2018-10-24 17:12:35,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2018-10-24 17:12:35,779 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:12:35,780 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:12:35,780 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:12:35,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:12:35,781 INFO L82 PathProgramCache]: Analyzing trace with hash 629702866, now seen corresponding path program 1 times [2018-10-24 17:12:35,781 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:12:35,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:12:35,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:12:35,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:12:35,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:12:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:12:36,894 WARN L179 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-10-24 17:12:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 565 proven. 4 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-10-24 17:12:37,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:12:37,944 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 17:12:37,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:12:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:12:38,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:12:38,531 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 569 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-10-24 17:12:38,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:12:38,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 17:12:38,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:12:38,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:12:38,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:12:38,566 INFO L87 Difference]: Start difference. First operand 52684 states and 63622 transitions. Second operand 5 states. [2018-10-24 17:13:02,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:13:02,234 INFO L93 Difference]: Finished difference Result 116328 states and 138569 transitions. [2018-10-24 17:13:02,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 17:13:02,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 730 [2018-10-24 17:13:02,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:13:02,307 INFO L225 Difference]: With dead ends: 116328 [2018-10-24 17:13:02,307 INFO L226 Difference]: Without dead ends: 59514 [2018-10-24 17:13:02,339 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 730 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:13:02,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59514 states. [2018-10-24 17:13:02,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59514 to 58146. [2018-10-24 17:13:02,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58146 states. [2018-10-24 17:13:02,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58146 states to 58146 states and 65037 transitions. [2018-10-24 17:13:02,926 INFO L78 Accepts]: Start accepts. Automaton has 58146 states and 65037 transitions. Word has length 730 [2018-10-24 17:13:02,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:13:02,927 INFO L481 AbstractCegarLoop]: Abstraction has 58146 states and 65037 transitions. [2018-10-24 17:13:02,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:13:02,927 INFO L276 IsEmpty]: Start isEmpty. Operand 58146 states and 65037 transitions. [2018-10-24 17:13:02,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2018-10-24 17:13:02,952 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:13:02,953 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, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:13:02,953 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:13:02,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:13:02,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1844742664, now seen corresponding path program 1 times [2018-10-24 17:13:02,954 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:13:02,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:13:02,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:13:02,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:13:02,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:13:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:13:04,084 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 220 proven. 72 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-10-24 17:13:04,084 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:13:04,084 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:13:04,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:13:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:13:04,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:13:05,277 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2018-10-24 17:13:05,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:13:05,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 17:13:05,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:13:05,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:13:05,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:13:05,318 INFO L87 Difference]: Start difference. First operand 58146 states and 65037 transitions. Second operand 5 states. [2018-10-24 17:13:22,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:13:22,612 INFO L93 Difference]: Finished difference Result 190058 states and 214489 transitions. [2018-10-24 17:13:22,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:13:22,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 753 [2018-10-24 17:13:22,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:13:22,748 INFO L225 Difference]: With dead ends: 190058 [2018-10-24 17:13:22,748 INFO L226 Difference]: Without dead ends: 131914 [2018-10-24 17:13:22,792 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 752 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:13:22,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131914 states. [2018-10-24 17:13:24,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131914 to 131907. [2018-10-24 17:13:24,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131907 states. [2018-10-24 17:13:24,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131907 states to 131907 states and 143733 transitions. [2018-10-24 17:13:24,294 INFO L78 Accepts]: Start accepts. Automaton has 131907 states and 143733 transitions. Word has length 753 [2018-10-24 17:13:24,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:13:24,295 INFO L481 AbstractCegarLoop]: Abstraction has 131907 states and 143733 transitions. [2018-10-24 17:13:24,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:13:24,296 INFO L276 IsEmpty]: Start isEmpty. Operand 131907 states and 143733 transitions. [2018-10-24 17:13:24,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2018-10-24 17:13:24,323 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:13:24,324 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:13:24,324 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:13:24,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:13:24,324 INFO L82 PathProgramCache]: Analyzing trace with hash -454332109, now seen corresponding path program 1 times [2018-10-24 17:13:24,325 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:13:24,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:13:24,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:13:24,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:13:24,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:13:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:13:25,222 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-24 17:13:25,222 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:13:25,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:13:25,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:13:25,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:13:25,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:13:25,224 INFO L87 Difference]: Start difference. First operand 131907 states and 143733 transitions. Second operand 4 states. [2018-10-24 17:13:39,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:13:39,442 INFO L93 Difference]: Finished difference Result 310263 states and 339182 transitions. [2018-10-24 17:13:39,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:13:39,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 898 [2018-10-24 17:13:39,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:13:39,642 INFO L225 Difference]: With dead ends: 310263 [2018-10-24 17:13:39,642 INFO L226 Difference]: Without dead ends: 178358 [2018-10-24 17:13:39,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:13:39,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178358 states. [2018-10-24 17:13:42,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178358 to 167419. [2018-10-24 17:13:42,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167419 states. [2018-10-24 17:13:42,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167419 states to 167419 states and 179231 transitions. [2018-10-24 17:13:42,170 INFO L78 Accepts]: Start accepts. Automaton has 167419 states and 179231 transitions. Word has length 898 [2018-10-24 17:13:42,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:13:42,171 INFO L481 AbstractCegarLoop]: Abstraction has 167419 states and 179231 transitions. [2018-10-24 17:13:42,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:13:42,171 INFO L276 IsEmpty]: Start isEmpty. Operand 167419 states and 179231 transitions. [2018-10-24 17:13:42,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2018-10-24 17:13:42,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:13:42,183 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:13:42,183 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:13:42,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:13:42,184 INFO L82 PathProgramCache]: Analyzing trace with hash 819861566, now seen corresponding path program 1 times [2018-10-24 17:13:42,184 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:13:42,184 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:13:42,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:13:42,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:13:42,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:13:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:13:43,039 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-10-24 17:13:43,403 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-24 17:13:43,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:13:43,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:13:43,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:13:43,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:13:43,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:13:43,404 INFO L87 Difference]: Start difference. First operand 167419 states and 179231 transitions. Second operand 4 states. Received shutdown request... [2018-10-24 17:13:49,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:13:49,890 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:13:49,896 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:13:49,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:13:49 BoogieIcfgContainer [2018-10-24 17:13:49,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:13:49,897 INFO L168 Benchmark]: Toolchain (without parser) took 239942.95 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 17:13:49,898 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:13:49,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3690.79 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: 392.8 MB). Peak memory consumption was 392.8 MB. Max. memory is 7.1 GB. [2018-10-24 17:13:49,900 INFO L168 Benchmark]: Boogie Procedure Inliner took 1337.50 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 869.8 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 117.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:13:49,901 INFO L168 Benchmark]: Boogie Preprocessor took 828.40 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 101.8 MB). Peak memory consumption was 101.8 MB. Max. memory is 7.1 GB. [2018-10-24 17:13:49,901 INFO L168 Benchmark]: RCFGBuilder took 18013.02 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 281.5 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -395.1 MB). Peak memory consumption was 864.2 MB. Max. memory is 7.1 GB. [2018-10-24 17:13:49,902 INFO L168 Benchmark]: TraceAbstraction took 216066.85 ms. Allocated memory was 2.7 GB in the beginning and 3.8 GB in the end (delta: 1.1 GB). Free memory was 2.5 GB in the beginning and 2.5 GB in the end (delta: -40.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 17:13:49,909 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3690.79 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: 392.8 MB). Peak memory consumption was 392.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1337.50 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 869.8 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 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 828.40 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 101.8 MB). Peak memory consumption was 101.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18013.02 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 281.5 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -395.1 MB). Peak memory consumption was 864.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216066.85 ms. Allocated memory was 2.7 GB in the beginning and 3.8 GB in the end (delta: 1.1 GB). Free memory was 2.5 GB in the beginning and 2.5 GB in the end (delta: -40.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 142). Cancelled while BasicCegarLoop was constructing difference of abstraction (167419states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (15841 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 215.9s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 198.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10623 SDtfs, 38526 SDslu, 3605 SDs, 0 SdLazy, 87441 SolverSat, 21041 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 168.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2493 GetRequests, 2462 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167419occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 47009 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 6788 NumberOfCodeBlocks, 6788 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 6775 ConstructedInterpolants, 0 QuantifiedInterpolants, 12008463 SizeOfPredicates, 8 NumberOfNonLiveVariables, 2967 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 13 InterpolantComputations, 8 PerfectInterpolantSequences, 4374/4524 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown