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/Problem13_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:16:03,747 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:16:03,749 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:16:03,761 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:16:03,761 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:16:03,762 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:16:03,764 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:16:03,766 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:16:03,767 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:16:03,768 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:16:03,769 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:16:03,770 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:16:03,770 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:16:03,771 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:16:03,773 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:16:03,773 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:16:03,774 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:16:03,776 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:16:03,778 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:16:03,780 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:16:03,781 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:16:03,785 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:16:03,788 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 21:16:03,806 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 21:16:03,806 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 21:16:03,807 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 21:16:03,808 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 21:16:03,808 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 21:16:03,838 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:16:03,838 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:16:03,839 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:16:03,839 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:16:03,839 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:16:03,841 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:16:03,841 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:16:03,841 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:16:03,841 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:16:03,841 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:16:03,842 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:16:03,842 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:16:03,842 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:16:03,842 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:16:03,842 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:16:03,843 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:16:03,843 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:16:03,843 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:16:03,844 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:16:03,844 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:16:03,844 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:16:03,844 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:16:03,844 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:16:03,845 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:16:03,845 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:16:03,845 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:16:03,845 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:16:03,846 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:16:03,897 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:16:03,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:16:03,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:16:03,917 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:16:03,917 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:16:03,918 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label05_true-unreach-call.c [2018-11-06 21:16:03,986 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/601baeee0/3b0b1fa296004846a3da23f858e15d7e/FLAG4b883d5ed [2018-11-06 21:16:04,759 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:16:04,760 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label05_true-unreach-call.c [2018-11-06 21:16:04,801 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/601baeee0/3b0b1fa296004846a3da23f858e15d7e/FLAG4b883d5ed [2018-11-06 21:16:04,822 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/601baeee0/3b0b1fa296004846a3da23f858e15d7e [2018-11-06 21:16:04,835 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:16:04,837 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:16:04,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:16:04,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:16:04,845 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:16:04,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:16:04" (1/1) ... [2018-11-06 21:16:04,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7364f84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04, skipping insertion in model container [2018-11-06 21:16:04,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:16:04" (1/1) ... [2018-11-06 21:16:04,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:16:05,053 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:16:06,547 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:16:06,552 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:16:07,329 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:16:07,368 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:16:07,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:07 WrapperNode [2018-11-06 21:16:07,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:16:07,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:16:07,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:16:07,372 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:16:07,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:07" (1/1) ... [2018-11-06 21:16:07,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:07" (1/1) ... [2018-11-06 21:16:08,156 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:16:08,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:16:08,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:16:08,157 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:16:08,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:07" (1/1) ... [2018-11-06 21:16:08,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:07" (1/1) ... [2018-11-06 21:16:08,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:07" (1/1) ... [2018-11-06 21:16:08,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:07" (1/1) ... [2018-11-06 21:16:08,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:07" (1/1) ... [2018-11-06 21:16:08,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:07" (1/1) ... [2018-11-06 21:16:08,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:07" (1/1) ... [2018-11-06 21:16:08,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:16:08,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:16:08,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:16:08,648 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:16:08,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:07" (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 21:16:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:16:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:16:08,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:16:20,787 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:16:20,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:16:20 BoogieIcfgContainer [2018-11-06 21:16:20,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:16:20,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:16:20,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:16:20,792 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:16:20,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:16:04" (1/3) ... [2018-11-06 21:16:20,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63bd3e9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:16:20, skipping insertion in model container [2018-11-06 21:16:20,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:07" (2/3) ... [2018-11-06 21:16:20,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63bd3e9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:16:20, skipping insertion in model container [2018-11-06 21:16:20,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:16:20" (3/3) ... [2018-11-06 21:16:20,796 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label05_true-unreach-call.c [2018-11-06 21:16:20,806 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:16:20,817 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:16:20,834 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:16:20,878 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:16:20,879 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:16:20,879 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:16:20,879 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:16:20,880 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:16:20,880 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:16:20,880 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:16:20,880 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:16:20,880 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:16:20,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-11-06 21:16:20,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-06 21:16:20,929 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:16:20,930 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] [2018-11-06 21:16:20,933 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:16:20,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:16:20,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1586436998, now seen corresponding path program 1 times [2018-11-06 21:16:20,942 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:16:20,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:16:20,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:16:21,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:16:21,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:16:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:16:21,484 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-06 21:16:21,832 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-11-06 21:16:22,185 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 21:16:22,188 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:16:22,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:16:22,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:16:22,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:16:22,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:16:22,215 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 5 states. [2018-11-06 21:16:22,503 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-06 21:16:38,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:16:38,484 INFO L93 Difference]: Finished difference Result 4624 states and 8784 transitions. [2018-11-06 21:16:38,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:16:38,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2018-11-06 21:16:38,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:16:38,548 INFO L225 Difference]: With dead ends: 4624 [2018-11-06 21:16:38,548 INFO L226 Difference]: Without dead ends: 3515 [2018-11-06 21:16:38,561 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:16:38,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3515 states. [2018-11-06 21:16:38,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3515 to 3514. [2018-11-06 21:16:38,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3514 states. [2018-11-06 21:16:38,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 5233 transitions. [2018-11-06 21:16:38,743 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 5233 transitions. Word has length 43 [2018-11-06 21:16:38,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:16:38,744 INFO L480 AbstractCegarLoop]: Abstraction has 3514 states and 5233 transitions. [2018-11-06 21:16:38,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:16:38,744 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 5233 transitions. [2018-11-06 21:16:38,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-11-06 21:16:38,755 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:16:38,758 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] [2018-11-06 21:16:38,758 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:16:38,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:16:38,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1600132786, now seen corresponding path program 1 times [2018-11-06 21:16:38,759 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:16:38,759 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:16:38,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:16:38,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:16:38,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:16:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:16:39,225 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-11-06 21:16:39,225 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:16:39,225 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:16:39,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:16:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:16:39,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:16:39,440 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-11-06 21:16:39,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:16:39,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-11-06 21:16:39,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:16:39,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:16:39,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:16:39,474 INFO L87 Difference]: Start difference. First operand 3514 states and 5233 transitions. Second operand 5 states. [2018-11-06 21:16:56,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:16:56,317 INFO L93 Difference]: Finished difference Result 9440 states and 15276 transitions. [2018-11-06 21:16:56,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:16:56,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2018-11-06 21:16:56,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:16:56,353 INFO L225 Difference]: With dead ends: 9440 [2018-11-06 21:16:56,353 INFO L226 Difference]: Without dead ends: 6716 [2018-11-06 21:16:56,358 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:16:56,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6716 states. [2018-11-06 21:16:56,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6716 to 6695. [2018-11-06 21:16:56,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6695 states. [2018-11-06 21:16:56,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6695 states to 6695 states and 9408 transitions. [2018-11-06 21:16:56,494 INFO L78 Accepts]: Start accepts. Automaton has 6695 states and 9408 transitions. Word has length 169 [2018-11-06 21:16:56,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:16:56,495 INFO L480 AbstractCegarLoop]: Abstraction has 6695 states and 9408 transitions. [2018-11-06 21:16:56,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:16:56,499 INFO L276 IsEmpty]: Start isEmpty. Operand 6695 states and 9408 transitions. [2018-11-06 21:16:56,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-11-06 21:16:56,511 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:16:56,511 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, 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] [2018-11-06 21:16:56,511 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:16:56,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:16:56,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1540137407, now seen corresponding path program 1 times [2018-11-06 21:16:56,512 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:16:56,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:16:56,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:16:56,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:16:56,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:16:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:16:56,914 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 81 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-06 21:16:56,915 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:16:56,915 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:16:56,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:16:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:16:57,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:16:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:16:57,069 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:16:57,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 21:16:57,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:16:57,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:16:57,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:16:57,072 INFO L87 Difference]: Start difference. First operand 6695 states and 9408 transitions. Second operand 4 states. [2018-11-06 21:17:05,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:17:05,291 INFO L93 Difference]: Finished difference Result 22896 states and 33428 transitions. [2018-11-06 21:17:05,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:17:05,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 212 [2018-11-06 21:17:05,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:17:05,369 INFO L225 Difference]: With dead ends: 22896 [2018-11-06 21:17:05,370 INFO L226 Difference]: Without dead ends: 16991 [2018-11-06 21:17:05,380 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 212 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 21:17:05,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16991 states. [2018-11-06 21:17:05,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16991 to 11431. [2018-11-06 21:17:05,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11431 states. [2018-11-06 21:17:05,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11431 states to 11431 states and 15331 transitions. [2018-11-06 21:17:05,609 INFO L78 Accepts]: Start accepts. Automaton has 11431 states and 15331 transitions. Word has length 212 [2018-11-06 21:17:05,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:17:05,610 INFO L480 AbstractCegarLoop]: Abstraction has 11431 states and 15331 transitions. [2018-11-06 21:17:05,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:17:05,610 INFO L276 IsEmpty]: Start isEmpty. Operand 11431 states and 15331 transitions. [2018-11-06 21:17:05,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-11-06 21:17:05,617 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:17:05,617 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, 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] [2018-11-06 21:17:05,617 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:17:05,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:17:05,618 INFO L82 PathProgramCache]: Analyzing trace with hash 712625866, now seen corresponding path program 1 times [2018-11-06 21:17:05,618 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:17:05,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:17:05,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:05,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:05,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-11-06 21:17:06,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:17:06,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:17:06,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:17:06,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:17:06,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:17:06,098 INFO L87 Difference]: Start difference. First operand 11431 states and 15331 transitions. Second operand 5 states. [2018-11-06 21:17:19,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:17:19,945 INFO L93 Difference]: Finished difference Result 51522 states and 70769 transitions. [2018-11-06 21:17:19,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:17:19,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 286 [2018-11-06 21:17:19,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:17:20,044 INFO L225 Difference]: With dead ends: 51522 [2018-11-06 21:17:20,044 INFO L226 Difference]: Without dead ends: 40881 [2018-11-06 21:17:20,070 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:17:20,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40881 states. [2018-11-06 21:17:20,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40881 to 40725. [2018-11-06 21:17:20,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40725 states. [2018-11-06 21:17:21,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40725 states to 40725 states and 52746 transitions. [2018-11-06 21:17:21,207 INFO L78 Accepts]: Start accepts. Automaton has 40725 states and 52746 transitions. Word has length 286 [2018-11-06 21:17:21,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:17:21,208 INFO L480 AbstractCegarLoop]: Abstraction has 40725 states and 52746 transitions. [2018-11-06 21:17:21,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:17:21,208 INFO L276 IsEmpty]: Start isEmpty. Operand 40725 states and 52746 transitions. [2018-11-06 21:17:21,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-11-06 21:17:21,217 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:17:21,218 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, 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] [2018-11-06 21:17:21,218 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:17:21,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:17:21,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1604350725, now seen corresponding path program 1 times [2018-11-06 21:17:21,220 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:17:21,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:17:21,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:21,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:21,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:21,613 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 224 proven. 4 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-11-06 21:17:21,614 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:17:21,614 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:17:21,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:21,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:17:21,815 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-11-06 21:17:21,846 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:17:21,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 21:17:21,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:17:21,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:17:21,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:17:21,849 INFO L87 Difference]: Start difference. First operand 40725 states and 52746 transitions. Second operand 4 states. [2018-11-06 21:17:30,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:17:30,980 INFO L93 Difference]: Finished difference Result 139822 states and 180800 transitions. [2018-11-06 21:17:30,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:17:30,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 287 [2018-11-06 21:17:30,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:17:31,684 INFO L225 Difference]: With dead ends: 139822 [2018-11-06 21:17:31,685 INFO L226 Difference]: Without dead ends: 99887 [2018-11-06 21:17:31,756 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 287 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 21:17:31,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99887 states. [2018-11-06 21:17:32,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99887 to 73820. [2018-11-06 21:17:32,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73820 states. [2018-11-06 21:17:32,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73820 states to 73820 states and 92292 transitions. [2018-11-06 21:17:32,743 INFO L78 Accepts]: Start accepts. Automaton has 73820 states and 92292 transitions. Word has length 287 [2018-11-06 21:17:32,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:17:32,743 INFO L480 AbstractCegarLoop]: Abstraction has 73820 states and 92292 transitions. [2018-11-06 21:17:32,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:17:32,743 INFO L276 IsEmpty]: Start isEmpty. Operand 73820 states and 92292 transitions. [2018-11-06 21:17:32,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-11-06 21:17:32,764 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:17:32,764 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:17:32,764 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:17:32,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:17:32,765 INFO L82 PathProgramCache]: Analyzing trace with hash 188507124, now seen corresponding path program 1 times [2018-11-06 21:17:32,765 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:17:32,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:17:32,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:32,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:32,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:33,175 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-11-06 21:17:33,175 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:17:33,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:17:33,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:17:33,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:17:33,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:17:33,177 INFO L87 Difference]: Start difference. First operand 73820 states and 92292 transitions. Second operand 4 states. [2018-11-06 21:17:43,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:17:43,100 INFO L93 Difference]: Finished difference Result 208303 states and 262305 transitions. [2018-11-06 21:17:43,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:17:43,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 379 [2018-11-06 21:17:43,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:17:43,291 INFO L225 Difference]: With dead ends: 208303 [2018-11-06 21:17:43,291 INFO L226 Difference]: Without dead ends: 135273 [2018-11-06 21:17:43,346 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 21:17:43,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135273 states. [2018-11-06 21:17:44,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135273 to 134482. [2018-11-06 21:17:44,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134482 states. [2018-11-06 21:17:44,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134482 states to 134482 states and 159448 transitions. [2018-11-06 21:17:44,622 INFO L78 Accepts]: Start accepts. Automaton has 134482 states and 159448 transitions. Word has length 379 [2018-11-06 21:17:44,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:17:44,623 INFO L480 AbstractCegarLoop]: Abstraction has 134482 states and 159448 transitions. [2018-11-06 21:17:44,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:17:44,623 INFO L276 IsEmpty]: Start isEmpty. Operand 134482 states and 159448 transitions. [2018-11-06 21:17:44,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2018-11-06 21:17:44,680 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:17:44,681 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:17:44,681 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:17:44,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:17:44,681 INFO L82 PathProgramCache]: Analyzing trace with hash 236957667, now seen corresponding path program 1 times [2018-11-06 21:17:44,681 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:17:44,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:17:44,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:44,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:44,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:45,050 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 403 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-11-06 21:17:45,051 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:17:45,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:17:45,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:17:45,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:17:45,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:17:45,052 INFO L87 Difference]: Start difference. First operand 134482 states and 159448 transitions. Second operand 4 states. [2018-11-06 21:17:54,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:17:54,923 INFO L93 Difference]: Finished difference Result 304464 states and 361815 transitions. [2018-11-06 21:17:54,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:17:54,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 550 [2018-11-06 21:17:54,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:17:55,137 INFO L225 Difference]: With dead ends: 304464 [2018-11-06 21:17:55,137 INFO L226 Difference]: Without dead ends: 170772 [2018-11-06 21:17:55,244 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:17:55,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170772 states. [2018-11-06 21:17:57,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170772 to 167576. [2018-11-06 21:17:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167576 states. [2018-11-06 21:17:57,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167576 states to 167576 states and 191018 transitions. [2018-11-06 21:17:57,609 INFO L78 Accepts]: Start accepts. Automaton has 167576 states and 191018 transitions. Word has length 550 [2018-11-06 21:17:57,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:17:57,609 INFO L480 AbstractCegarLoop]: Abstraction has 167576 states and 191018 transitions. [2018-11-06 21:17:57,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:17:57,610 INFO L276 IsEmpty]: Start isEmpty. Operand 167576 states and 191018 transitions. [2018-11-06 21:17:57,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2018-11-06 21:17:57,662 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:17:57,663 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, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:17:57,663 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:17:57,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:17:57,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1147200999, now seen corresponding path program 1 times [2018-11-06 21:17:57,664 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:17:57,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:17:57,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:57,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:57,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:58,395 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 496 proven. 16 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-11-06 21:17:58,396 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:17:58,396 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:17:58,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:58,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:17:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 496 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2018-11-06 21:17:58,856 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:17:58,856 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-06 21:17:58,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:17:58,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:17:58,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:17:58,858 INFO L87 Difference]: Start difference. First operand 167576 states and 191018 transitions. Second operand 5 states. [2018-11-06 21:18:12,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:18:12,874 INFO L93 Difference]: Finished difference Result 332800 states and 379561 transitions. [2018-11-06 21:18:12,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:18:12,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 614 [2018-11-06 21:18:12,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:18:13,074 INFO L225 Difference]: With dead ends: 332800 [2018-11-06 21:18:13,074 INFO L226 Difference]: Without dead ends: 166014 [2018-11-06 21:18:13,168 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 614 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:18:13,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166014 states. [2018-11-06 21:18:15,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166014 to 165970. [2018-11-06 21:18:15,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165970 states. [2018-11-06 21:18:15,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165970 states to 165970 states and 180115 transitions. [2018-11-06 21:18:15,958 INFO L78 Accepts]: Start accepts. Automaton has 165970 states and 180115 transitions. Word has length 614 [2018-11-06 21:18:15,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:18:15,959 INFO L480 AbstractCegarLoop]: Abstraction has 165970 states and 180115 transitions. [2018-11-06 21:18:15,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:18:15,960 INFO L276 IsEmpty]: Start isEmpty. Operand 165970 states and 180115 transitions. [2018-11-06 21:18:15,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2018-11-06 21:18:15,986 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:18:15,986 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:18:15,987 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:18:15,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:18:15,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1694945770, now seen corresponding path program 1 times [2018-11-06 21:18:15,987 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:18:15,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:18:15,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:15,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:18:15,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:18:16,704 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2018-11-06 21:18:16,705 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:18:16,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:18:16,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:18:16,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:18:16,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:18:16,707 INFO L87 Difference]: Start difference. First operand 165970 states and 180115 transitions. Second operand 3 states. [2018-11-06 21:18:24,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:18:24,194 INFO L93 Difference]: Finished difference Result 324838 states and 352575 transitions. [2018-11-06 21:18:24,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:18:24,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 640 [2018-11-06 21:18:24,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:18:24,531 INFO L225 Difference]: With dead ends: 324838 [2018-11-06 21:18:24,532 INFO L226 Difference]: Without dead ends: 159658 [2018-11-06 21:18:24,654 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:18:24,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159658 states. [2018-11-06 21:18:27,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159658 to 157293. [2018-11-06 21:18:27,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157293 states. [2018-11-06 21:18:27,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157293 states to 157293 states and 166776 transitions. [2018-11-06 21:18:27,302 INFO L78 Accepts]: Start accepts. Automaton has 157293 states and 166776 transitions. Word has length 640 [2018-11-06 21:18:27,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:18:27,303 INFO L480 AbstractCegarLoop]: Abstraction has 157293 states and 166776 transitions. [2018-11-06 21:18:27,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:18:27,303 INFO L276 IsEmpty]: Start isEmpty. Operand 157293 states and 166776 transitions. [2018-11-06 21:18:27,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2018-11-06 21:18:27,334 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:18:27,335 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, 4, 4, 4, 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, 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] [2018-11-06 21:18:27,335 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:18:27,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:18:27,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1049185512, now seen corresponding path program 1 times [2018-11-06 21:18:27,336 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:18:27,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:18:27,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:27,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:18:27,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:18:31,971 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 597 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-11-06 21:18:31,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:18:31,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:18:31,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:18:31,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:18:31,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:18:31,972 INFO L87 Difference]: Start difference. First operand 157293 states and 166776 transitions. Second operand 3 states. [2018-11-06 21:18:37,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:18:37,264 INFO L93 Difference]: Finished difference Result 312190 states and 330948 transitions. [2018-11-06 21:18:37,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:18:37,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 678 [2018-11-06 21:18:37,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:18:37,466 INFO L225 Difference]: With dead ends: 312190 [2018-11-06 21:18:37,466 INFO L226 Difference]: Without dead ends: 148567 [2018-11-06 21:18:37,553 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:18:38,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148567 states. [2018-11-06 21:18:38,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148567 to 146199. [2018-11-06 21:18:38,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146199 states. [2018-11-06 21:18:39,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146199 states to 146199 states and 152302 transitions. [2018-11-06 21:18:39,029 INFO L78 Accepts]: Start accepts. Automaton has 146199 states and 152302 transitions. Word has length 678 [2018-11-06 21:18:39,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:18:39,029 INFO L480 AbstractCegarLoop]: Abstraction has 146199 states and 152302 transitions. [2018-11-06 21:18:39,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:18:39,029 INFO L276 IsEmpty]: Start isEmpty. Operand 146199 states and 152302 transitions. [2018-11-06 21:18:39,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2018-11-06 21:18:39,062 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:18:39,062 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:18:39,063 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:18:39,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:18:39,063 INFO L82 PathProgramCache]: Analyzing trace with hash 699491750, now seen corresponding path program 1 times [2018-11-06 21:18:39,063 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:18:39,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:18:39,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:39,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:18:39,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:18:40,464 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 662 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2018-11-06 21:18:40,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:18:40,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:18:40,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:18:40,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:18:40,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:18:40,466 INFO L87 Difference]: Start difference. First operand 146199 states and 152302 transitions. Second operand 4 states. [2018-11-06 21:18:48,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:18:48,841 INFO L93 Difference]: Finished difference Result 321564 states and 335453 transitions. [2018-11-06 21:18:48,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:18:48,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 729 [2018-11-06 21:18:48,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:18:49,072 INFO L225 Difference]: With dead ends: 321564 [2018-11-06 21:18:49,073 INFO L226 Difference]: Without dead ends: 176155 [2018-11-06 21:18:49,169 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:18:49,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176155 states. [2018-11-06 21:18:50,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176155 to 175352. [2018-11-06 21:18:50,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175352 states. [2018-11-06 21:18:51,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175352 states to 175352 states and 182194 transitions. [2018-11-06 21:18:51,101 INFO L78 Accepts]: Start accepts. Automaton has 175352 states and 182194 transitions. Word has length 729 [2018-11-06 21:18:51,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:18:51,102 INFO L480 AbstractCegarLoop]: Abstraction has 175352 states and 182194 transitions. [2018-11-06 21:18:51,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:18:51,102 INFO L276 IsEmpty]: Start isEmpty. Operand 175352 states and 182194 transitions. [2018-11-06 21:18:51,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2018-11-06 21:18:51,147 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:18:51,148 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-06 21:18:51,148 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:18:51,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:18:51,148 INFO L82 PathProgramCache]: Analyzing trace with hash -738906392, now seen corresponding path program 1 times [2018-11-06 21:18:51,149 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:18:51,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:18:51,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:51,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:18:51,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:18:52,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 634 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2018-11-06 21:18:52,681 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:18:52,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 21:18:52,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:18:52,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:18:52,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:18:52,683 INFO L87 Difference]: Start difference. First operand 175352 states and 182194 transitions. Second operand 5 states. [2018-11-06 21:19:11,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:19:11,254 INFO L93 Difference]: Finished difference Result 430463 states and 447523 transitions. [2018-11-06 21:19:11,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:19:11,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 788 [2018-11-06 21:19:11,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:19:11,538 INFO L225 Difference]: With dead ends: 430463 [2018-11-06 21:19:11,539 INFO L226 Difference]: Without dead ends: 254319 [2018-11-06 21:19:11,640 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:19:11,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254319 states. [2018-11-06 21:19:14,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254319 to 238419. [2018-11-06 21:19:14,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238419 states. [2018-11-06 21:19:14,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238419 states to 238419 states and 246773 transitions. [2018-11-06 21:19:14,441 INFO L78 Accepts]: Start accepts. Automaton has 238419 states and 246773 transitions. Word has length 788 [2018-11-06 21:19:14,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:19:14,441 INFO L480 AbstractCegarLoop]: Abstraction has 238419 states and 246773 transitions. [2018-11-06 21:19:14,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:19:14,442 INFO L276 IsEmpty]: Start isEmpty. Operand 238419 states and 246773 transitions. [2018-11-06 21:19:15,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1117 [2018-11-06 21:19:15,464 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:19:15,465 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:15,465 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:19:15,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:19:15,466 INFO L82 PathProgramCache]: Analyzing trace with hash -554310712, now seen corresponding path program 1 times [2018-11-06 21:19:15,467 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:19:15,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:19:15,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:15,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:19:15,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:19:17,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 680 proven. 436 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2018-11-06 21:19:17,848 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:19:17,848 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:19:17,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:19:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:19:18,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:19:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 797 proven. 0 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2018-11-06 21:19:19,818 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:19:19,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-11-06 21:19:19,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 21:19:19,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 21:19:19,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:19:19,820 INFO L87 Difference]: Start difference. First operand 238419 states and 246773 transitions. Second operand 8 states. Received shutdown request... [2018-11-06 21:19:47,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-06 21:19:47,446 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 21:19:47,452 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 21:19:47,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:19:47 BoogieIcfgContainer [2018-11-06 21:19:47,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 21:19:47,453 INFO L168 Benchmark]: Toolchain (without parser) took 222617.17 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 49.3 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-11-06 21:19:47,454 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 21:19:47,454 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2531.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-06 21:19:47,455 INFO L168 Benchmark]: Boogie Procedure Inliner took 785.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 810.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2018-11-06 21:19:47,456 INFO L168 Benchmark]: Boogie Preprocessor took 491.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 68.2 MB). Peak memory consumption was 68.2 MB. Max. memory is 7.1 GB. [2018-11-06 21:19:47,457 INFO L168 Benchmark]: RCFGBuilder took 12140.21 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 243.8 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 11.2 MB). Peak memory consumption was 582.4 MB. Max. memory is 7.1 GB. [2018-11-06 21:19:47,458 INFO L168 Benchmark]: TraceAbstraction took 206663.34 ms. Allocated memory was 2.6 GB in the beginning and 4.7 GB in the end (delta: 2.1 GB). Free memory was 2.1 GB in the beginning and 1.4 GB in the end (delta: 717.5 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-06 21:19:47,463 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2531.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 785.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 810.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 491.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 68.2 MB). Peak memory consumption was 68.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12140.21 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 243.8 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 11.2 MB). Peak memory consumption was 582.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206663.34 ms. Allocated memory was 2.6 GB in the beginning and 4.7 GB in the end (delta: 2.1 GB). Free memory was 2.1 GB in the beginning and 1.4 GB in the end (delta: 717.5 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 138]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 138). Cancelled while BasicCegarLoop was constructing difference of abstraction (238419states) and FLOYD_HOARE automaton (currently 17 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (342493 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 206.5s OverallTime, 13 OverallIterations, 7 TraceHistogramMax, 168.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10837 SDtfs, 40075 SDslu, 4008 SDs, 0 SdLazy, 80757 SolverSat, 20555 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 131.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2462 GetRequests, 2409 SyntacticMatches, 8 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=238419occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 17.9s AutomataMinimizationTime, 12 MinimizatonAttempts, 57272 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 8889 NumberOfCodeBlocks, 8889 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 8871 ConstructedInterpolants, 90 QuantifiedInterpolants, 11735341 SizeOfPredicates, 1 NumberOfNonLiveVariables, 3069 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 18 InterpolantComputations, 13 PerfectInterpolantSequences, 9263/9726 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown