java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:59:50,836 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:59:50,838 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:59:50,850 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:59:50,850 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:59:50,851 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:59:50,853 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:59:50,855 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:59:50,856 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:59:50,859 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:59:50,860 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:59:50,860 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:59:50,863 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:59:50,864 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:59:50,866 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:59:50,866 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:59:50,868 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:59:50,875 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:59:50,880 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:59:50,882 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:59:50,885 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:59:50,886 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:59:50,888 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 21:59:50,897 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 21:59:50,912 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:59:50,912 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:59:50,913 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:59:50,913 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:59:50,914 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:59:50,914 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:59:50,914 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:59:50,914 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:59:50,914 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:59:50,915 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:59:50,915 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:59:50,915 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:59:50,915 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:59:50,915 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:59:50,916 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:59:50,916 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:59:50,916 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:59:50,916 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:59:50,916 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:59:50,917 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:59:50,917 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:59:50,917 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:59:50,917 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:59:50,917 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:59:50,918 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:59:50,918 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:59:50,918 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:59:50,918 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:59:50,965 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:59:50,980 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:59:50,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:59:50,987 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:59:50,987 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:59:50,988 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label24_true-unreach-call.c [2018-11-06 21:59:51,050 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6beb1ea69/66d2146bd43b4e089b9a5ed087429c8a/FLAG03f0012a2 [2018-11-06 21:59:51,970 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:59:51,971 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label24_true-unreach-call.c [2018-11-06 21:59:52,014 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6beb1ea69/66d2146bd43b4e089b9a5ed087429c8a/FLAG03f0012a2 [2018-11-06 21:59:52,030 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6beb1ea69/66d2146bd43b4e089b9a5ed087429c8a [2018-11-06 21:59:52,041 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:59:52,043 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:59:52,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:59:52,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:59:52,049 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:59:52,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:52" (1/1) ... [2018-11-06 21:59:52,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42126e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:52, skipping insertion in model container [2018-11-06 21:59:52,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:52" (1/1) ... [2018-11-06 21:59:52,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:59:52,306 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:59:54,225 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:59:54,231 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:59:55,248 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:59:55,301 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:59:55,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:55 WrapperNode [2018-11-06 21:59:55,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:59:55,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:59:55,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:59:55,304 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:59:55,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:55" (1/1) ... [2018-11-06 21:59:55,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:55" (1/1) ... [2018-11-06 21:59:56,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:59:56,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:59:56,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:59:56,371 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:59:56,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:55" (1/1) ... [2018-11-06 21:59:56,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:55" (1/1) ... [2018-11-06 21:59:56,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:55" (1/1) ... [2018-11-06 21:59:56,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:55" (1/1) ... [2018-11-06 21:59:56,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:55" (1/1) ... [2018-11-06 21:59:56,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:55" (1/1) ... [2018-11-06 21:59:57,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:55" (1/1) ... [2018-11-06 21:59:57,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:59:57,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:59:57,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:59:57,164 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:59:57,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:59:57,236 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:59:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:59:57,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 22:00:13,592 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 22:00:13,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:13 BoogieIcfgContainer [2018-11-06 22:00:13,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 22:00:13,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 22:00:13,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 22:00:13,597 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 22:00:13,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:59:52" (1/3) ... [2018-11-06 22:00:13,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39eea775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:13, skipping insertion in model container [2018-11-06 22:00:13,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:55" (2/3) ... [2018-11-06 22:00:13,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39eea775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:13, skipping insertion in model container [2018-11-06 22:00:13,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:13" (3/3) ... [2018-11-06 22:00:13,602 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label24_true-unreach-call.c [2018-11-06 22:00:13,611 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 22:00:13,621 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 22:00:13,640 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 22:00:13,702 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 22:00:13,703 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 22:00:13,703 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 22:00:13,703 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 22:00:13,703 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 22:00:13,703 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 22:00:13,703 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 22:00:13,704 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 22:00:13,704 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 22:00:13,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-11-06 22:00:13,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-06 22:00:13,773 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:00:13,774 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:00:13,777 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:00:13,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:00:13,783 INFO L82 PathProgramCache]: Analyzing trace with hash 279835594, now seen corresponding path program 1 times [2018-11-06 22:00:13,786 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:00:13,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:00:13,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:00:13,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:00:13,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:00:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:00:14,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:00:14,291 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:00:14,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:00:14,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:00:14,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:00:14,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:00:14,318 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-11-06 22:00:33,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:00:33,518 INFO L93 Difference]: Finished difference Result 6326 states and 12085 transitions. [2018-11-06 22:00:33,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:00:33,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-11-06 22:00:33,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:00:33,578 INFO L225 Difference]: With dead ends: 6326 [2018-11-06 22:00:33,578 INFO L226 Difference]: Without dead ends: 4570 [2018-11-06 22:00:33,588 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:00:33,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2018-11-06 22:00:33,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 4564. [2018-11-06 22:00:33,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4564 states. [2018-11-06 22:00:33,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 7499 transitions. [2018-11-06 22:00:33,787 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 7499 transitions. Word has length 46 [2018-11-06 22:00:33,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:00:33,788 INFO L480 AbstractCegarLoop]: Abstraction has 4564 states and 7499 transitions. [2018-11-06 22:00:33,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:00:33,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 7499 transitions. [2018-11-06 22:00:33,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-11-06 22:00:33,795 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:00:33,797 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:00:33,797 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:00:33,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:00:33,798 INFO L82 PathProgramCache]: Analyzing trace with hash -2006626889, now seen corresponding path program 1 times [2018-11-06 22:00:33,798 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:00:33,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:00:33,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:00:33,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:00:33,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:00:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:00:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:00:34,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:00:34,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:00:34,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:00:34,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:00:34,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:00:34,225 INFO L87 Difference]: Start difference. First operand 4564 states and 7499 transitions. Second operand 4 states. [2018-11-06 22:00:53,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:00:53,997 INFO L93 Difference]: Finished difference Result 17552 states and 29056 transitions. [2018-11-06 22:00:53,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:00:53,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2018-11-06 22:00:53,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:00:54,061 INFO L225 Difference]: With dead ends: 17552 [2018-11-06 22:00:54,062 INFO L226 Difference]: Without dead ends: 12990 [2018-11-06 22:00:54,070 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:00:54,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2018-11-06 22:00:54,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 8666. [2018-11-06 22:00:54,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8666 states. [2018-11-06 22:00:54,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8666 states to 8666 states and 13862 transitions. [2018-11-06 22:00:54,276 INFO L78 Accepts]: Start accepts. Automaton has 8666 states and 13862 transitions. Word has length 150 [2018-11-06 22:00:54,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:00:54,277 INFO L480 AbstractCegarLoop]: Abstraction has 8666 states and 13862 transitions. [2018-11-06 22:00:54,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:00:54,277 INFO L276 IsEmpty]: Start isEmpty. Operand 8666 states and 13862 transitions. [2018-11-06 22:00:54,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-11-06 22:00:54,280 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:00:54,280 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:00:54,281 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:00:54,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:00:54,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1483607059, now seen corresponding path program 1 times [2018-11-06 22:00:54,281 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:00:54,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:00:54,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:00:54,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:00:54,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:00:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:00:54,616 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:00:54,616 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:00:54,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:00:54,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:00:54,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:00:54,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:00:54,617 INFO L87 Difference]: Start difference. First operand 8666 states and 13862 transitions. Second operand 4 states. [2018-11-06 22:01:10,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:01:10,754 INFO L93 Difference]: Finished difference Result 33844 states and 54415 transitions. [2018-11-06 22:01:10,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:01:10,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2018-11-06 22:01:10,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:01:10,829 INFO L225 Difference]: With dead ends: 33844 [2018-11-06 22:01:10,830 INFO L226 Difference]: Without dead ends: 25180 [2018-11-06 22:01:10,842 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:01:10,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25180 states. [2018-11-06 22:01:11,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25180 to 25142. [2018-11-06 22:01:11,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25142 states. [2018-11-06 22:01:11,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25142 states to 25142 states and 35892 transitions. [2018-11-06 22:01:11,332 INFO L78 Accepts]: Start accepts. Automaton has 25142 states and 35892 transitions. Word has length 154 [2018-11-06 22:01:11,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:01:11,333 INFO L480 AbstractCegarLoop]: Abstraction has 25142 states and 35892 transitions. [2018-11-06 22:01:11,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:01:11,333 INFO L276 IsEmpty]: Start isEmpty. Operand 25142 states and 35892 transitions. [2018-11-06 22:01:11,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-11-06 22:01:11,337 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:01:11,337 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:01:11,338 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:01:11,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:01:11,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1749040983, now seen corresponding path program 1 times [2018-11-06 22:01:11,340 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:01:11,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:01:11,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:11,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:01:11,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:01:11,666 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:01:11,666 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:01:11,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:01:11,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:01:11,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:01:11,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:01:11,668 INFO L87 Difference]: Start difference. First operand 25142 states and 35892 transitions. Second operand 4 states. [2018-11-06 22:01:27,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:01:27,200 INFO L93 Difference]: Finished difference Result 98404 states and 140796 transitions. [2018-11-06 22:01:27,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:01:27,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2018-11-06 22:01:27,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:01:27,362 INFO L225 Difference]: With dead ends: 98404 [2018-11-06 22:01:27,362 INFO L226 Difference]: Without dead ends: 73264 [2018-11-06 22:01:27,398 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:01:27,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73264 states. [2018-11-06 22:01:28,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73264 to 73244. [2018-11-06 22:01:28,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73244 states. [2018-11-06 22:01:28,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73244 states to 73244 states and 91793 transitions. [2018-11-06 22:01:28,366 INFO L78 Accepts]: Start accepts. Automaton has 73244 states and 91793 transitions. Word has length 177 [2018-11-06 22:01:28,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:01:28,367 INFO L480 AbstractCegarLoop]: Abstraction has 73244 states and 91793 transitions. [2018-11-06 22:01:28,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:01:28,367 INFO L276 IsEmpty]: Start isEmpty. Operand 73244 states and 91793 transitions. [2018-11-06 22:01:28,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2018-11-06 22:01:28,379 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:01:28,380 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:01:28,380 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:01:28,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:01:28,381 INFO L82 PathProgramCache]: Analyzing trace with hash -775084423, now seen corresponding path program 1 times [2018-11-06 22:01:28,381 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:01:28,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:01:28,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:28,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:01:28,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:01:28,910 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-06 22:01:29,138 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-11-06 22:01:30,175 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-11-06 22:01:30,175 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:01:30,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 22:01:30,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 22:01:30,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 22:01:30,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 22:01:30,177 INFO L87 Difference]: Start difference. First operand 73244 states and 91793 transitions. Second operand 7 states. [2018-11-06 22:02:00,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:02:00,878 INFO L93 Difference]: Finished difference Result 172454 states and 210825 transitions. [2018-11-06 22:02:00,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 22:02:00,884 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 501 [2018-11-06 22:02:00,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:02:00,994 INFO L225 Difference]: With dead ends: 172454 [2018-11-06 22:02:00,995 INFO L226 Difference]: Without dead ends: 99212 [2018-11-06 22:02:01,028 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-11-06 22:02:01,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99212 states. [2018-11-06 22:02:01,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99212 to 95108. [2018-11-06 22:02:01,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95108 states. [2018-11-06 22:02:01,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95108 states to 95108 states and 114314 transitions. [2018-11-06 22:02:01,950 INFO L78 Accepts]: Start accepts. Automaton has 95108 states and 114314 transitions. Word has length 501 [2018-11-06 22:02:01,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:02:01,951 INFO L480 AbstractCegarLoop]: Abstraction has 95108 states and 114314 transitions. [2018-11-06 22:02:01,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 22:02:01,951 INFO L276 IsEmpty]: Start isEmpty. Operand 95108 states and 114314 transitions. [2018-11-06 22:02:01,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2018-11-06 22:02:01,963 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:02:01,964 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:02:01,964 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:02:01,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:02:01,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1403289569, now seen corresponding path program 1 times [2018-11-06 22:02:01,965 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:02:01,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:02:01,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:01,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:02:01,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:02:02,420 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-11-06 22:02:02,577 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 418 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-11-06 22:02:02,577 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:02:02,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:02:02,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:02:02,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:02:02,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:02:02,579 INFO L87 Difference]: Start difference. First operand 95108 states and 114314 transitions. Second operand 4 states. [2018-11-06 22:02:17,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:02:17,678 INFO L93 Difference]: Finished difference Result 238036 states and 291029 transitions. [2018-11-06 22:02:17,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:02:17,678 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 529 [2018-11-06 22:02:17,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:02:17,860 INFO L225 Difference]: With dead ends: 238036 [2018-11-06 22:02:17,860 INFO L226 Difference]: Without dead ends: 142930 [2018-11-06 22:02:17,935 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:02:18,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142930 states. [2018-11-06 22:02:19,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142930 to 142919. [2018-11-06 22:02:19,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142919 states. [2018-11-06 22:02:20,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142919 states to 142919 states and 167348 transitions. [2018-11-06 22:02:20,298 INFO L78 Accepts]: Start accepts. Automaton has 142919 states and 167348 transitions. Word has length 529 [2018-11-06 22:02:20,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:02:20,299 INFO L480 AbstractCegarLoop]: Abstraction has 142919 states and 167348 transitions. [2018-11-06 22:02:20,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:02:20,299 INFO L276 IsEmpty]: Start isEmpty. Operand 142919 states and 167348 transitions. [2018-11-06 22:02:20,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 902 [2018-11-06 22:02:20,334 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:02:20,335 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-11-06 22:02:20,335 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:02:20,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:02:20,337 INFO L82 PathProgramCache]: Analyzing trace with hash -162915854, now seen corresponding path program 1 times [2018-11-06 22:02:20,337 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:02:20,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:02:20,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:20,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:02:20,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:02:21,454 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-11-06 22:02:21,454 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:02:21,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:02:21,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:02:21,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:02:21,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:02:21,457 INFO L87 Difference]: Start difference. First operand 142919 states and 167348 transitions. Second operand 4 states. [2018-11-06 22:02:36,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:02:36,923 INFO L93 Difference]: Finished difference Result 285839 states and 334703 transitions. [2018-11-06 22:02:36,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:02:36,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 901 [2018-11-06 22:02:36,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:02:37,097 INFO L225 Difference]: With dead ends: 285839 [2018-11-06 22:02:37,097 INFO L226 Difference]: Without dead ends: 142922 [2018-11-06 22:02:37,169 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:02:37,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142922 states. [2018-11-06 22:02:38,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142922 to 131983. [2018-11-06 22:02:38,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131983 states. [2018-11-06 22:02:38,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131983 states to 131983 states and 147276 transitions. [2018-11-06 22:02:38,360 INFO L78 Accepts]: Start accepts. Automaton has 131983 states and 147276 transitions. Word has length 901 [2018-11-06 22:02:38,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:02:38,361 INFO L480 AbstractCegarLoop]: Abstraction has 131983 states and 147276 transitions. [2018-11-06 22:02:38,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:02:38,361 INFO L276 IsEmpty]: Start isEmpty. Operand 131983 states and 147276 transitions. [2018-11-06 22:02:38,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2018-11-06 22:02:38,393 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:02:38,394 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:02:38,394 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:02:38,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:02:38,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1040125018, now seen corresponding path program 1 times [2018-11-06 22:02:38,395 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:02:38,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:02:38,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:38,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:02:38,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:02:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2018-11-06 22:02:40,201 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:02:40,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:02:40,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:02:40,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:02:40,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:02:40,203 INFO L87 Difference]: Start difference. First operand 131983 states and 147276 transitions. Second operand 4 states. [2018-11-06 22:02:57,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:02:57,532 INFO L93 Difference]: Finished difference Result 451281 states and 505305 transitions. [2018-11-06 22:02:57,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:02:57,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 919 [2018-11-06 22:02:57,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:02:57,911 INFO L225 Difference]: With dead ends: 451281 [2018-11-06 22:02:57,911 INFO L226 Difference]: Without dead ends: 315195 [2018-11-06 22:02:57,983 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:02:58,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315195 states. [2018-11-06 22:03:02,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315195 to 313672. [2018-11-06 22:03:02,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313672 states. [2018-11-06 22:03:02,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313672 states to 313672 states and 340741 transitions. [2018-11-06 22:03:02,424 INFO L78 Accepts]: Start accepts. Automaton has 313672 states and 340741 transitions. Word has length 919 [2018-11-06 22:03:02,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:03:02,425 INFO L480 AbstractCegarLoop]: Abstraction has 313672 states and 340741 transitions. [2018-11-06 22:03:02,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:03:02,425 INFO L276 IsEmpty]: Start isEmpty. Operand 313672 states and 340741 transitions. [2018-11-06 22:03:02,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1145 [2018-11-06 22:03:02,455 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:03:02,456 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:03:02,457 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:03:02,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:03:02,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1323120000, now seen corresponding path program 1 times [2018-11-06 22:03:02,458 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:03:02,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:03:02,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:03:02,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:03:02,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:03:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:03:07,442 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 563 proven. 4 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-11-06 22:03:07,443 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:03:07,443 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:03:08,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:03:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:03:09,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:03:15,002 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 567 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-11-06 22:03:15,023 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:03:15,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-06 22:03:15,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 22:03:15,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 22:03:15,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:03:15,027 INFO L87 Difference]: Start difference. First operand 313672 states and 340741 transitions. Second operand 5 states. Received shutdown request... [2018-11-06 22:03:37,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 22:03:37,995 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 22:03:38,001 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 22:03:38,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:03:38 BoogieIcfgContainer [2018-11-06 22:03:38,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 22:03:38,002 INFO L168 Benchmark]: Toolchain (without parser) took 225960.00 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-06 22:03:38,003 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 22:03:38,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3257.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 984.0 MB in the end (delta: 403.3 MB). Peak memory consumption was 403.3 MB. Max. memory is 7.1 GB. [2018-11-06 22:03:38,005 INFO L168 Benchmark]: Boogie Procedure Inliner took 1066.73 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 851.4 MB). Free memory was 984.0 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2018-11-06 22:03:38,006 INFO L168 Benchmark]: Boogie Preprocessor took 792.89 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 93.2 MB). Peak memory consumption was 93.2 MB. Max. memory is 7.1 GB. [2018-11-06 22:03:38,007 INFO L168 Benchmark]: RCFGBuilder took 16429.20 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 290.5 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -417.2 MB). Peak memory consumption was 838.3 MB. Max. memory is 7.1 GB. [2018-11-06 22:03:38,008 INFO L168 Benchmark]: TraceAbstraction took 204407.82 ms. Allocated memory was 2.7 GB in the beginning and 4.4 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 3.0 GB in the end (delta: -576.5 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-06 22:03:38,013 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3257.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 984.0 MB in the end (delta: 403.3 MB). Peak memory consumption was 403.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1066.73 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 851.4 MB). Free memory was 984.0 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 792.89 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 93.2 MB). Peak memory consumption was 93.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16429.20 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 290.5 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -417.2 MB). Peak memory consumption was 838.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204407.82 ms. Allocated memory was 2.7 GB in the beginning and 4.4 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 3.0 GB in the end (delta: -576.5 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 151]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 151). Cancelled while BasicCegarLoop was constructing difference of abstraction (313672states) and FLOYD_HOARE automaton (currently 6 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (559726 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 204.3s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 173.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10836 SDtfs, 37218 SDslu, 4230 SDs, 0 SdLazy, 93984 SolverSat, 19069 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 139.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1189 GetRequests, 1155 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=313672occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 10.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 20965 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 11.0s InterpolantComputationTime, 5665 NumberOfCodeBlocks, 5665 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 5655 ConstructedInterpolants, 0 QuantifiedInterpolants, 12969449 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1271 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 3919/3923 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown