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_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:56:05,455 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:56:05,457 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:56:05,470 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:56:05,470 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:56:05,471 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:56:05,473 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:56:05,475 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:56:05,476 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:56:05,477 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:56:05,478 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:56:05,479 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:56:05,480 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:56:05,481 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:56:05,482 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:56:05,482 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:56:05,483 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:56:05,485 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:56:05,487 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:56:05,489 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:56:05,492 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:56:05,494 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:56:05,500 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 21:56:05,512 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 21:56:05,546 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:56:05,547 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:56:05,548 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:56:05,548 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:56:05,548 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:56:05,550 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:56:05,550 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:56:05,550 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:56:05,550 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:56:05,550 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:56:05,551 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:56:05,551 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:56:05,551 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:56:05,551 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:56:05,551 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:56:05,552 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:56:05,552 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:56:05,553 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:56:05,553 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:56:05,553 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:56:05,553 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:56:05,553 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:56:05,554 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:56:05,554 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:56:05,554 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:56:05,554 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:56:05,554 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:56:05,555 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:56:05,622 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:56:05,643 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:56:05,648 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:56:05,650 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:56:05,650 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:56:05,651 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label04_true-unreach-call.c [2018-11-06 21:56:05,723 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ad9f8375/fcb5c82e45db444e9b92f336949d9902/FLAGd7a88e8b3 [2018-11-06 21:56:06,560 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:56:06,561 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label04_true-unreach-call.c [2018-11-06 21:56:06,606 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ad9f8375/fcb5c82e45db444e9b92f336949d9902/FLAGd7a88e8b3 [2018-11-06 21:56:06,621 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ad9f8375/fcb5c82e45db444e9b92f336949d9902 [2018-11-06 21:56:06,633 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:56:06,634 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:56:06,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:56:06,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:56:06,640 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:56:06,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:56:06" (1/1) ... [2018-11-06 21:56:06,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7293a3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:06, skipping insertion in model container [2018-11-06 21:56:06,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:56:06" (1/1) ... [2018-11-06 21:56:06,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:56:06,906 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:56:09,013 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:56:09,018 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:56:10,163 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:56:10,217 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:56:10,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:10 WrapperNode [2018-11-06 21:56:10,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:56:10,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:56:10,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:56:10,219 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:56:10,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:10" (1/1) ... [2018-11-06 21:56:10,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:10" (1/1) ... [2018-11-06 21:56:11,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:56:11,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:56:11,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:56:11,305 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:56:11,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:10" (1/1) ... [2018-11-06 21:56:11,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:10" (1/1) ... [2018-11-06 21:56:11,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:10" (1/1) ... [2018-11-06 21:56:11,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:10" (1/1) ... [2018-11-06 21:56:11,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:10" (1/1) ... [2018-11-06 21:56:11,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:10" (1/1) ... [2018-11-06 21:56:11,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:10" (1/1) ... [2018-11-06 21:56:11,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:56:11,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:56:11,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:56:11,941 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:56:11,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:10" (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 21:56:12,011 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:56:12,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:56:12,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:56:28,365 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:56:28,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:56:28 BoogieIcfgContainer [2018-11-06 21:56:28,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:56:28,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:56:28,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:56:28,370 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:56:28,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:56:06" (1/3) ... [2018-11-06 21:56:28,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429b0983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:56:28, skipping insertion in model container [2018-11-06 21:56:28,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:10" (2/3) ... [2018-11-06 21:56:28,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429b0983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:56:28, skipping insertion in model container [2018-11-06 21:56:28,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:56:28" (3/3) ... [2018-11-06 21:56:28,374 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label04_true-unreach-call.c [2018-11-06 21:56:28,384 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:56:28,396 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:56:28,413 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:56:28,465 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:56:28,466 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:56:28,466 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:56:28,466 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:56:28,466 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:56:28,466 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:56:28,467 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:56:28,467 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:56:28,467 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:56:28,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-11-06 21:56:28,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-11-06 21:56:28,539 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:56:28,541 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:56:28,543 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:56:28,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:56:28,548 INFO L82 PathProgramCache]: Analyzing trace with hash 265969354, now seen corresponding path program 1 times [2018-11-06 21:56:28,550 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:56:28,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:56:28,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:56:28,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:56:28,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:56:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:56:29,233 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-11-06 21:56:29,739 WARN L179 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-11-06 21:56:29,920 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 4 [2018-11-06 21:56:29,946 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 21:56:29,949 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:56:29,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 21:56:29,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 21:56:29,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 21:56:29,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:56:29,977 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 6 states. [2018-11-06 21:56:30,200 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-06 21:57:08,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:57:08,243 INFO L93 Difference]: Finished difference Result 9077 states and 17599 transitions. [2018-11-06 21:57:08,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 21:57:08,246 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2018-11-06 21:57:08,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:57:08,312 INFO L225 Difference]: With dead ends: 9077 [2018-11-06 21:57:08,313 INFO L226 Difference]: Without dead ends: 7315 [2018-11-06 21:57:08,324 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:57:08,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7315 states. [2018-11-06 21:57:08,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7315 to 5898. [2018-11-06 21:57:08,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5898 states. [2018-11-06 21:57:08,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5898 states to 5898 states and 8690 transitions. [2018-11-06 21:57:08,565 INFO L78 Accepts]: Start accepts. Automaton has 5898 states and 8690 transitions. Word has length 63 [2018-11-06 21:57:08,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:57:08,566 INFO L480 AbstractCegarLoop]: Abstraction has 5898 states and 8690 transitions. [2018-11-06 21:57:08,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 21:57:08,566 INFO L276 IsEmpty]: Start isEmpty. Operand 5898 states and 8690 transitions. [2018-11-06 21:57:08,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-11-06 21:57:08,576 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:57:08,576 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:57:08,577 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:57:08,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:57:08,577 INFO L82 PathProgramCache]: Analyzing trace with hash 572072304, now seen corresponding path program 1 times [2018-11-06 21:57:08,577 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:57:08,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:57:08,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:57:08,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:57:08,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:57:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:57:09,314 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-11-06 21:57:09,315 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:57:09,315 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 21:57:09,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:57:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:57:09,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:57:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:57:09,688 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:57:09,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 21:57:09,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:57:09,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:57:09,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:57:09,690 INFO L87 Difference]: Start difference. First operand 5898 states and 8690 transitions. Second operand 4 states. [2018-11-06 21:57:29,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:57:29,107 INFO L93 Difference]: Finished difference Result 20109 states and 31003 transitions. [2018-11-06 21:57:29,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:57:29,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 299 [2018-11-06 21:57:29,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:57:29,174 INFO L225 Difference]: With dead ends: 20109 [2018-11-06 21:57:29,174 INFO L226 Difference]: Without dead ends: 14213 [2018-11-06 21:57:29,183 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 299 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 21:57:29,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14213 states. [2018-11-06 21:57:29,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14213 to 8656. [2018-11-06 21:57:29,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8656 states. [2018-11-06 21:57:29,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8656 states to 8656 states and 12232 transitions. [2018-11-06 21:57:29,393 INFO L78 Accepts]: Start accepts. Automaton has 8656 states and 12232 transitions. Word has length 299 [2018-11-06 21:57:29,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:57:29,395 INFO L480 AbstractCegarLoop]: Abstraction has 8656 states and 12232 transitions. [2018-11-06 21:57:29,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:57:29,395 INFO L276 IsEmpty]: Start isEmpty. Operand 8656 states and 12232 transitions. [2018-11-06 21:57:29,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-11-06 21:57:29,402 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:57:29,402 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 21:57:29,403 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:57:29,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:57:29,403 INFO L82 PathProgramCache]: Analyzing trace with hash 648034155, now seen corresponding path program 1 times [2018-11-06 21:57:29,403 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:57:29,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:57:29,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:57:29,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:57:29,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:57:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:57:29,865 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-06 21:57:30,004 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 121 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:57:30,005 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:57:30,005 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 21:57:30,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:57:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:57:30,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:57:30,362 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:57:30,400 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:57:30,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-11-06 21:57:30,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:57:30,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:57:30,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:57:30,405 INFO L87 Difference]: Start difference. First operand 8656 states and 12232 transitions. Second operand 5 states. [2018-11-06 21:58:01,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:58:01,237 INFO L93 Difference]: Finished difference Result 34060 states and 48229 transitions. [2018-11-06 21:58:01,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 21:58:01,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 367 [2018-11-06 21:58:01,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:58:01,300 INFO L225 Difference]: With dead ends: 34060 [2018-11-06 21:58:01,300 INFO L226 Difference]: Without dead ends: 19940 [2018-11-06 21:58:01,319 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:58:01,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19940 states. [2018-11-06 21:58:01,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19940 to 19863. [2018-11-06 21:58:01,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19863 states. [2018-11-06 21:58:01,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19863 states to 19863 states and 24370 transitions. [2018-11-06 21:58:01,601 INFO L78 Accepts]: Start accepts. Automaton has 19863 states and 24370 transitions. Word has length 367 [2018-11-06 21:58:01,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:58:01,602 INFO L480 AbstractCegarLoop]: Abstraction has 19863 states and 24370 transitions. [2018-11-06 21:58:01,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:58:01,602 INFO L276 IsEmpty]: Start isEmpty. Operand 19863 states and 24370 transitions. [2018-11-06 21:58:01,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2018-11-06 21:58:01,608 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:58:01,608 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:58:01,609 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:58:01,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:58:01,609 INFO L82 PathProgramCache]: Analyzing trace with hash 106396661, now seen corresponding path program 1 times [2018-11-06 21:58:01,609 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:58:01,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:58:01,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:58:01,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:58:01,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:58:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:58:02,183 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 121 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-11-06 21:58:02,183 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:58:02,183 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 21:58:02,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:58:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:58:02,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:58:02,641 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:58:02,671 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:58:02,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 21:58:02,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:58:02,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:58:02,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:58:02,673 INFO L87 Difference]: Start difference. First operand 19863 states and 24370 transitions. Second operand 4 states. [2018-11-06 21:58:18,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:58:18,641 INFO L93 Difference]: Finished difference Result 74185 states and 91659 transitions. [2018-11-06 21:58:18,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:58:18,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 369 [2018-11-06 21:58:18,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:58:18,745 INFO L225 Difference]: With dead ends: 74185 [2018-11-06 21:58:18,746 INFO L226 Difference]: Without dead ends: 54324 [2018-11-06 21:58:18,765 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 369 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 21:58:18,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54324 states. [2018-11-06 21:58:19,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54324 to 34894. [2018-11-06 21:58:19,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34894 states. [2018-11-06 21:58:19,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34894 states to 34894 states and 42211 transitions. [2018-11-06 21:58:19,285 INFO L78 Accepts]: Start accepts. Automaton has 34894 states and 42211 transitions. Word has length 369 [2018-11-06 21:58:19,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:58:19,286 INFO L480 AbstractCegarLoop]: Abstraction has 34894 states and 42211 transitions. [2018-11-06 21:58:19,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:58:19,286 INFO L276 IsEmpty]: Start isEmpty. Operand 34894 states and 42211 transitions. [2018-11-06 21:58:19,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2018-11-06 21:58:19,297 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:58:19,298 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:19,298 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:58:19,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:58:19,299 INFO L82 PathProgramCache]: Analyzing trace with hash -2140253801, now seen corresponding path program 1 times [2018-11-06 21:58:19,299 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:58:19,299 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:58:19,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:58:19,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:58:19,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:58:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:58:20,332 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-06 21:58:20,333 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:58:20,333 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 21:58:20,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:58:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:58:20,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:58:22,471 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 22 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:58:22,490 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:58:22,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-11-06 21:58:22,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 21:58:22,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 21:58:22,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:58:22,493 INFO L87 Difference]: Start difference. First operand 34894 states and 42211 transitions. Second operand 8 states. [2018-11-06 21:58:57,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:58:57,143 INFO L93 Difference]: Finished difference Result 149378 states and 184040 transitions. [2018-11-06 21:58:57,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-06 21:58:57,143 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 551 [2018-11-06 21:58:57,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:58:57,344 INFO L225 Difference]: With dead ends: 149378 [2018-11-06 21:58:57,344 INFO L226 Difference]: Without dead ends: 114486 [2018-11-06 21:58:57,380 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 549 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-11-06 21:58:57,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114486 states. [2018-11-06 21:58:58,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114486 to 114405. [2018-11-06 21:58:58,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114405 states. [2018-11-06 21:58:58,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114405 states to 114405 states and 134741 transitions. [2018-11-06 21:58:58,701 INFO L78 Accepts]: Start accepts. Automaton has 114405 states and 134741 transitions. Word has length 551 [2018-11-06 21:58:58,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:58:58,702 INFO L480 AbstractCegarLoop]: Abstraction has 114405 states and 134741 transitions. [2018-11-06 21:58:58,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 21:58:58,702 INFO L276 IsEmpty]: Start isEmpty. Operand 114405 states and 134741 transitions. [2018-11-06 21:58:58,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2018-11-06 21:58:58,731 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:58:58,731 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:58:58,732 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:58:58,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:58:58,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1107560030, now seen corresponding path program 1 times [2018-11-06 21:58:58,732 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:58:58,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:58:58,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:58:58,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:58:58,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:58:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:59:00,703 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 585 proven. 4 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2018-11-06 21:59:00,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:59:00,703 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 21:59:00,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:59:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:59:00,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:59:01,286 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 589 proven. 0 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2018-11-06 21:59:01,307 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:59:01,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-06 21:59:01,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:59:01,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:59:01,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:59:01,310 INFO L87 Difference]: Start difference. First operand 114405 states and 134741 transitions. Second operand 5 states. [2018-11-06 21:59:19,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:59:19,313 INFO L93 Difference]: Finished difference Result 235641 states and 276565 transitions. [2018-11-06 21:59:19,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 21:59:19,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 750 [2018-11-06 21:59:19,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:59:19,451 INFO L225 Difference]: With dead ends: 235641 [2018-11-06 21:59:19,451 INFO L226 Difference]: Without dead ends: 118503 [2018-11-06 21:59:19,536 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 750 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:59:19,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118503 states. [2018-11-06 21:59:20,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118503 to 108939. [2018-11-06 21:59:20,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108939 states. [2018-11-06 21:59:20,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108939 states to 108939 states and 120691 transitions. [2018-11-06 21:59:20,522 INFO L78 Accepts]: Start accepts. Automaton has 108939 states and 120691 transitions. Word has length 750 [2018-11-06 21:59:20,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:59:20,522 INFO L480 AbstractCegarLoop]: Abstraction has 108939 states and 120691 transitions. [2018-11-06 21:59:20,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:59:20,522 INFO L276 IsEmpty]: Start isEmpty. Operand 108939 states and 120691 transitions. [2018-11-06 21:59:20,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2018-11-06 21:59:20,540 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:59:20,541 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:59:20,541 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:59:20,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:59:20,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1785570206, now seen corresponding path program 1 times [2018-11-06 21:59:20,542 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:59:20,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:59:20,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:59:20,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:59:20,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:59:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:59:21,683 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-06 21:59:26,136 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 135 proven. 410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:59:26,136 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:59:26,136 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:59:26,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:59:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:59:26,381 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:59:31,274 WARN L179 SmtUtils]: Spent 4.61 s on a formula simplification. DAG size of input: 223 DAG size of output: 21 [2018-11-06 21:59:34,671 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 545 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:59:34,691 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:59:34,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 15 [2018-11-06 21:59:34,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-06 21:59:34,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-06 21:59:34,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2018-11-06 21:59:34,694 INFO L87 Difference]: Start difference. First operand 108939 states and 120691 transitions. Second operand 15 states. [2018-11-06 21:59:37,693 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 Received shutdown request... [2018-11-06 21:59:59,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-06 21:59:59,652 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 21:59:59,658 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 21:59:59,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:59:59 BoogieIcfgContainer [2018-11-06 21:59:59,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 21:59:59,659 INFO L168 Benchmark]: Toolchain (without parser) took 233025.70 ms. Allocated memory was 1.6 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -648.4 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-06 21:59:59,660 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 21:59:59,661 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3582.52 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 402.5 MB). Peak memory consumption was 402.5 MB. Max. memory is 7.1 GB. [2018-11-06 21:59:59,661 INFO L168 Benchmark]: Boogie Procedure Inliner took 1086.10 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 867.2 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2018-11-06 21:59:59,663 INFO L168 Benchmark]: Boogie Preprocessor took 635.43 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 90.8 MB). Peak memory consumption was 90.8 MB. Max. memory is 7.1 GB. [2018-11-06 21:59:59,663 INFO L168 Benchmark]: RCFGBuilder took 16425.06 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 306.7 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -394.2 MB). Peak memory consumption was 829.9 MB. Max. memory is 7.1 GB. [2018-11-06 21:59:59,664 INFO L168 Benchmark]: TraceAbstraction took 211291.57 ms. Allocated memory was 2.7 GB in the beginning and 3.8 GB in the end (delta: 1.1 GB). Free memory was 2.5 GB in the beginning and 2.1 GB in the end (delta: 399.8 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-06 21:59:59,670 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 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3582.52 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 402.5 MB). Peak memory consumption was 402.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1086.10 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 867.2 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 635.43 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 90.8 MB). Peak memory consumption was 90.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16425.06 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 306.7 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -394.2 MB). Peak memory consumption was 829.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211291.57 ms. Allocated memory was 2.7 GB in the beginning and 3.8 GB in the end (delta: 1.1 GB). Free memory was 2.5 GB in the beginning and 2.1 GB in the end (delta: 399.8 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 202]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 202). Cancelled while BasicCegarLoop was constructing difference of abstraction (108939states) and FLOYD_HOARE automaton (currently 27 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (27596 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 211.2s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 182.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8035 SDtfs, 62634 SDslu, 3836 SDs, 0 SdLazy, 105774 SolverSat, 22759 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 151.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3389 GetRequests, 3325 SyntacticMatches, 7 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 8.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114405occurred in iteration=5, 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: 3.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 36126 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 16.3s InterpolantComputationTime, 6687 NumberOfCodeBlocks, 6687 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 6674 ConstructedInterpolants, 425 QuantifiedInterpolants, 44629719 SizeOfPredicates, 12 NumberOfNonLiveVariables, 3865 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 3532/4062 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown