java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label06_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:07:14,661 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:07:14,663 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:07:14,675 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:07:14,676 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:07:14,677 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:07:14,678 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:07:14,680 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:07:14,682 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:07:14,683 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:07:14,684 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:07:14,684 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:07:14,685 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:07:14,687 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:07:14,688 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:07:14,689 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:07:14,690 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:07:14,695 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:07:14,699 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:07:14,701 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:07:14,705 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:07:14,707 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:07:14,709 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 14:07:14,717 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 14:07:14,717 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 14:07:14,718 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 14:07:14,719 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 14:07:14,719 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 14:07:14,749 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:07:14,749 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:07:14,751 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:07:14,752 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:07:14,752 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:07:14,753 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:07:14,753 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:07:14,753 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:07:14,753 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:07:14,753 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:07:14,753 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:07:14,754 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:07:14,754 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:07:14,754 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:07:14,754 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:07:14,754 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:07:14,755 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:07:14,756 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:07:14,756 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:07:14,756 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:07:14,757 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:07:14,757 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:07:14,757 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:07:14,757 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:07:14,757 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:07:14,757 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:07:14,758 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:07:14,758 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:07:14,835 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:07:14,847 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:07:14,850 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:07:14,851 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:07:14,852 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:07:14,853 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label06_false-unreach-call.c [2018-10-24 14:07:14,911 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/afe715394/4556c32fc334415ea90d460a45510012/FLAG7bd2e328c [2018-10-24 14:07:15,793 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:07:15,794 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label06_false-unreach-call.c [2018-10-24 14:07:15,840 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/afe715394/4556c32fc334415ea90d460a45510012/FLAG7bd2e328c [2018-10-24 14:07:15,866 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/afe715394/4556c32fc334415ea90d460a45510012 [2018-10-24 14:07:15,879 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:07:15,881 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:07:15,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:07:15,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:07:15,887 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:07:15,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:07:15" (1/1) ... [2018-10-24 14:07:15,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:15, skipping insertion in model container [2018-10-24 14:07:15,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:07:15" (1/1) ... [2018-10-24 14:07:15,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:07:16,073 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:07:17,567 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:07:17,571 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:07:18,287 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:07:18,326 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:07:18,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:18 WrapperNode [2018-10-24 14:07:18,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:07:18,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:07:18,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:07:18,331 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:07:18,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:18" (1/1) ... [2018-10-24 14:07:18,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:18" (1/1) ... [2018-10-24 14:07:19,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:07:19,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:07:19,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:07:19,177 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:07:19,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:18" (1/1) ... [2018-10-24 14:07:19,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:18" (1/1) ... [2018-10-24 14:07:19,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:18" (1/1) ... [2018-10-24 14:07:19,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:18" (1/1) ... [2018-10-24 14:07:19,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:18" (1/1) ... [2018-10-24 14:07:19,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:18" (1/1) ... [2018-10-24 14:07:19,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:18" (1/1) ... [2018-10-24 14:07:19,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:07:19,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:07:19,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:07:19,607 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:07:19,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:07:19,671 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:07:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:07:19,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:07:33,103 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:07:33,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:07:33 BoogieIcfgContainer [2018-10-24 14:07:33,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:07:33,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:07:33,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:07:33,108 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:07:33,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:07:15" (1/3) ... [2018-10-24 14:07:33,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3634d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:07:33, skipping insertion in model container [2018-10-24 14:07:33,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:18" (2/3) ... [2018-10-24 14:07:33,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3634d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:07:33, skipping insertion in model container [2018-10-24 14:07:33,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:07:33" (3/3) ... [2018-10-24 14:07:33,112 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label06_false-unreach-call.c [2018-10-24 14:07:33,123 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:07:33,133 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:07:33,151 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:07:33,199 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:07:33,200 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:07:33,200 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:07:33,200 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:07:33,200 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:07:33,201 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:07:33,201 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:07:33,201 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:07:33,201 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:07:33,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 14:07:33,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-24 14:07:33,247 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:07:33,248 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] [2018-10-24 14:07:33,251 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:07:33,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:07:33,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1580163962, now seen corresponding path program 1 times [2018-10-24 14:07:33,260 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:07:33,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:07:33,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:33,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:07:33,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:07:33,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:07:33,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:07:33,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:07:33,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:07:33,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:07:33,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:07:33,663 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 14:07:48,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:07:48,207 INFO L93 Difference]: Finished difference Result 3896 states and 7286 transitions. [2018-10-24 14:07:48,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:07:48,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-10-24 14:07:48,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:07:48,254 INFO L225 Difference]: With dead ends: 3896 [2018-10-24 14:07:48,254 INFO L226 Difference]: Without dead ends: 2790 [2018-10-24 14:07:48,265 INFO L605 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 [2018-10-24 14:07:48,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2018-10-24 14:07:48,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1945. [2018-10-24 14:07:48,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2018-10-24 14:07:48,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3412 transitions. [2018-10-24 14:07:48,432 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3412 transitions. Word has length 26 [2018-10-24 14:07:48,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:07:48,433 INFO L481 AbstractCegarLoop]: Abstraction has 1945 states and 3412 transitions. [2018-10-24 14:07:48,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:07:48,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3412 transitions. [2018-10-24 14:07:48,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-24 14:07:48,440 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:07:48,440 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:07:48,440 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:07:48,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:07:48,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1245921282, now seen corresponding path program 1 times [2018-10-24 14:07:48,443 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:07:48,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:07:48,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:48,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:07:48,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:07:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:07:49,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:07:49,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:07:49,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:07:49,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:07:49,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:07:49,288 INFO L87 Difference]: Start difference. First operand 1945 states and 3412 transitions. Second operand 5 states. [2018-10-24 14:07:49,561 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 14:08:10,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:08:10,621 INFO L93 Difference]: Finished difference Result 7061 states and 12475 transitions. [2018-10-24 14:08:10,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:08:10,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2018-10-24 14:08:10,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:08:10,649 INFO L225 Difference]: With dead ends: 7061 [2018-10-24 14:08:10,650 INFO L226 Difference]: Without dead ends: 5118 [2018-10-24 14:08:10,654 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:08:10,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2018-10-24 14:08:10,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5117. [2018-10-24 14:08:10,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5117 states. [2018-10-24 14:08:10,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7612 transitions. [2018-10-24 14:08:10,766 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7612 transitions. Word has length 92 [2018-10-24 14:08:10,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:08:10,767 INFO L481 AbstractCegarLoop]: Abstraction has 5117 states and 7612 transitions. [2018-10-24 14:08:10,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:08:10,767 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7612 transitions. [2018-10-24 14:08:10,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-24 14:08:10,776 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:08:10,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:08:10,777 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:08:10,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:08:10,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1189910277, now seen corresponding path program 1 times [2018-10-24 14:08:10,779 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:08:10,779 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:08:10,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:10,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:08:10,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:08:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:08:11,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:08:11,253 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:08:11,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:08:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:08:11,366 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:08:11,522 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-10-24 14:08:11,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:08:11,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-10-24 14:08:11,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:08:11,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:08:11,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:08:11,559 INFO L87 Difference]: Start difference. First operand 5117 states and 7612 transitions. Second operand 6 states. [2018-10-24 14:08:48,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:08:48,721 INFO L93 Difference]: Finished difference Result 32600 states and 52590 transitions. [2018-10-24 14:08:48,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 14:08:48,722 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2018-10-24 14:08:48,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:08:48,827 INFO L225 Difference]: With dead ends: 32600 [2018-10-24 14:08:48,827 INFO L226 Difference]: Without dead ends: 28273 [2018-10-24 14:08:48,839 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:08:48,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28273 states. [2018-10-24 14:08:49,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28273 to 28062. [2018-10-24 14:08:49,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28062 states. [2018-10-24 14:08:49,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28062 states to 28062 states and 36224 transitions. [2018-10-24 14:08:49,405 INFO L78 Accepts]: Start accepts. Automaton has 28062 states and 36224 transitions. Word has length 152 [2018-10-24 14:08:49,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:08:49,406 INFO L481 AbstractCegarLoop]: Abstraction has 28062 states and 36224 transitions. [2018-10-24 14:08:49,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:08:49,407 INFO L276 IsEmpty]: Start isEmpty. Operand 28062 states and 36224 transitions. [2018-10-24 14:08:49,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-24 14:08:49,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:08:49,419 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:08:49,421 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:08:49,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:08:49,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1157692297, now seen corresponding path program 1 times [2018-10-24 14:08:49,422 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:08:49,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:08:49,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:49,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:08:49,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:08:49,844 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-24 14:08:49,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:08:49,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 14:08:49,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:08:49,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:08:49,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:08:49,847 INFO L87 Difference]: Start difference. First operand 28062 states and 36224 transitions. Second operand 3 states. [2018-10-24 14:08:57,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:08:57,478 INFO L93 Difference]: Finished difference Result 78970 states and 102983 transitions. [2018-10-24 14:08:57,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:08:57,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 258 [2018-10-24 14:08:57,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:08:57,589 INFO L225 Difference]: With dead ends: 78970 [2018-10-24 14:08:57,590 INFO L226 Difference]: Without dead ends: 51698 [2018-10-24 14:08:57,626 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:08:57,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51698 states. [2018-10-24 14:08:58,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51698 to 51696. [2018-10-24 14:08:58,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51696 states. [2018-10-24 14:08:58,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51696 states to 51696 states and 63064 transitions. [2018-10-24 14:08:58,453 INFO L78 Accepts]: Start accepts. Automaton has 51696 states and 63064 transitions. Word has length 258 [2018-10-24 14:08:58,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:08:58,454 INFO L481 AbstractCegarLoop]: Abstraction has 51696 states and 63064 transitions. [2018-10-24 14:08:58,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:08:58,454 INFO L276 IsEmpty]: Start isEmpty. Operand 51696 states and 63064 transitions. [2018-10-24 14:08:58,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-10-24 14:08:58,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:08:58,472 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:08:58,472 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:08:58,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:08:58,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1360738627, now seen corresponding path program 1 times [2018-10-24 14:08:58,473 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:08:58,473 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:08:58,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:58,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:08:58,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:08:58,884 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 211 proven. 66 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-10-24 14:08:58,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:08:58,886 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:08:58,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:08:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:08:59,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:08:59,177 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-24 14:08:59,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:08:59,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-24 14:08:59,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:08:59,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:08:59,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:08:59,214 INFO L87 Difference]: Start difference. First operand 51696 states and 63064 transitions. Second operand 5 states. [2018-10-24 14:09:15,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:15,899 INFO L93 Difference]: Finished difference Result 179090 states and 220801 transitions. [2018-10-24 14:09:15,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:09:15,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 321 [2018-10-24 14:09:15,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:16,150 INFO L225 Difference]: With dead ends: 179090 [2018-10-24 14:09:16,150 INFO L226 Difference]: Without dead ends: 128184 [2018-10-24 14:09:16,220 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:09:16,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128184 states. [2018-10-24 14:09:17,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128184 to 105276. [2018-10-24 14:09:17,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105276 states. [2018-10-24 14:09:18,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105276 states to 105276 states and 122360 transitions. [2018-10-24 14:09:18,108 INFO L78 Accepts]: Start accepts. Automaton has 105276 states and 122360 transitions. Word has length 321 [2018-10-24 14:09:18,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:18,108 INFO L481 AbstractCegarLoop]: Abstraction has 105276 states and 122360 transitions. [2018-10-24 14:09:18,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:09:18,108 INFO L276 IsEmpty]: Start isEmpty. Operand 105276 states and 122360 transitions. [2018-10-24 14:09:18,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-10-24 14:09:18,124 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:18,125 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 14:09:18,125 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:18,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:18,126 INFO L82 PathProgramCache]: Analyzing trace with hash -798224648, now seen corresponding path program 1 times [2018-10-24 14:09:18,126 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:18,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:18,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:18,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:18,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:18,657 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-24 14:09:18,658 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:09:18,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:09:18,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:09:18,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:09:18,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:09:18,660 INFO L87 Difference]: Start difference. First operand 105276 states and 122360 transitions. Second operand 4 states. [2018-10-24 14:09:30,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:30,812 INFO L93 Difference]: Finished difference Result 288598 states and 342197 transitions. [2018-10-24 14:09:30,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:09:30,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 361 [2018-10-24 14:09:30,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:31,070 INFO L225 Difference]: With dead ends: 288598 [2018-10-24 14:09:31,071 INFO L226 Difference]: Without dead ends: 184112 [2018-10-24 14:09:31,152 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:09:31,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184112 states. [2018-10-24 14:09:32,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184112 to 184076. [2018-10-24 14:09:32,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184076 states. [2018-10-24 14:09:33,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184076 states to 184076 states and 210961 transitions. [2018-10-24 14:09:33,016 INFO L78 Accepts]: Start accepts. Automaton has 184076 states and 210961 transitions. Word has length 361 [2018-10-24 14:09:33,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:33,017 INFO L481 AbstractCegarLoop]: Abstraction has 184076 states and 210961 transitions. [2018-10-24 14:09:33,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:09:33,017 INFO L276 IsEmpty]: Start isEmpty. Operand 184076 states and 210961 transitions. [2018-10-24 14:09:33,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2018-10-24 14:09:33,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:33,040 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:09:33,040 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:33,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:33,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1127689357, now seen corresponding path program 1 times [2018-10-24 14:09:33,041 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:33,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:33,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:33,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:33,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:33,497 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 14:09:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 401 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-24 14:09:34,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:09:34,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:09:34,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:09:34,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:09:34,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:09:34,739 INFO L87 Difference]: Start difference. First operand 184076 states and 210961 transitions. Second operand 4 states. [2018-10-24 14:09:43,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:43,003 INFO L93 Difference]: Finished difference Result 383908 states and 439484 transitions. [2018-10-24 14:09:43,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:09:43,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 407 [2018-10-24 14:09:43,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:43,209 INFO L225 Difference]: With dead ends: 383908 [2018-10-24 14:09:43,209 INFO L226 Difference]: Without dead ends: 174539 [2018-10-24 14:09:43,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:09:43,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174539 states. [2018-10-24 14:09:45,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174539 to 161141. [2018-10-24 14:09:45,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161141 states. [2018-10-24 14:09:45,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161141 states to 161141 states and 181502 transitions. [2018-10-24 14:09:45,759 INFO L78 Accepts]: Start accepts. Automaton has 161141 states and 181502 transitions. Word has length 407 [2018-10-24 14:09:45,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:45,760 INFO L481 AbstractCegarLoop]: Abstraction has 161141 states and 181502 transitions. [2018-10-24 14:09:45,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:09:45,760 INFO L276 IsEmpty]: Start isEmpty. Operand 161141 states and 181502 transitions. [2018-10-24 14:09:45,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2018-10-24 14:09:45,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:45,774 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:09:45,774 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:45,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:45,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1727764676, now seen corresponding path program 1 times [2018-10-24 14:09:45,774 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:45,775 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:45,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:45,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:45,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:46,413 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 363 proven. 24 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-24 14:09:46,414 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:09:46,414 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:09:46,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:46,564 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:09:46,718 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 363 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2018-10-24 14:09:46,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:09:46,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 14:09:46,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:09:46,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:09:46,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:09:46,742 INFO L87 Difference]: Start difference. First operand 161141 states and 181502 transitions. Second operand 5 states. [2018-10-24 14:09:56,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:56,095 INFO L93 Difference]: Finished difference Result 323843 states and 366078 transitions. [2018-10-24 14:09:56,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:09:56,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 451 [2018-10-24 14:09:56,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:56,286 INFO L225 Difference]: With dead ends: 323843 [2018-10-24 14:09:56,286 INFO L226 Difference]: Without dead ends: 163492 [2018-10-24 14:09:56,378 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 452 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:09:56,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163492 states. [2018-10-24 14:09:59,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163492 to 154818. [2018-10-24 14:09:59,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154818 states. [2018-10-24 14:09:59,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154818 states to 154818 states and 169149 transitions. [2018-10-24 14:09:59,167 INFO L78 Accepts]: Start accepts. Automaton has 154818 states and 169149 transitions. Word has length 451 [2018-10-24 14:09:59,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:59,167 INFO L481 AbstractCegarLoop]: Abstraction has 154818 states and 169149 transitions. [2018-10-24 14:09:59,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:09:59,168 INFO L276 IsEmpty]: Start isEmpty. Operand 154818 states and 169149 transitions. [2018-10-24 14:09:59,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2018-10-24 14:09:59,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:59,198 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:09:59,199 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:59,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:59,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1925283330, now seen corresponding path program 1 times [2018-10-24 14:09:59,199 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:59,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:59,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:59,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:59,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:59,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 805 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2018-10-24 14:09:59,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:09:59,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:09:59,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:09:59,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:09:59,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:09:59,722 INFO L87 Difference]: Start difference. First operand 154818 states and 169149 transitions. Second operand 4 states. [2018-10-24 14:10:11,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:11,560 INFO L93 Difference]: Finished difference Result 333278 states and 364878 transitions. [2018-10-24 14:10:11,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:10:11,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 619 [2018-10-24 14:10:11,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:13,166 INFO L225 Difference]: With dead ends: 333278 [2018-10-24 14:10:13,166 INFO L226 Difference]: Without dead ends: 178461 [2018-10-24 14:10:13,226 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:13,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178461 states. [2018-10-24 14:10:20,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178461 to 177648. [2018-10-24 14:10:20,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177648 states. [2018-10-24 14:10:20,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177648 states to 177648 states and 189751 transitions. [2018-10-24 14:10:20,225 INFO L78 Accepts]: Start accepts. Automaton has 177648 states and 189751 transitions. Word has length 619 [2018-10-24 14:10:20,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:20,226 INFO L481 AbstractCegarLoop]: Abstraction has 177648 states and 189751 transitions. [2018-10-24 14:10:20,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:10:20,226 INFO L276 IsEmpty]: Start isEmpty. Operand 177648 states and 189751 transitions. [2018-10-24 14:10:20,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2018-10-24 14:10:20,264 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:20,265 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:10:20,265 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:20,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:20,265 INFO L82 PathProgramCache]: Analyzing trace with hash -669336003, now seen corresponding path program 1 times [2018-10-24 14:10:20,266 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:20,266 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:20,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:20,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:20,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:21,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 834 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2018-10-24 14:10:21,463 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:10:21,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:10:21,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:10:21,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:10:21,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:21,464 INFO L87 Difference]: Start difference. First operand 177648 states and 189751 transitions. Second operand 4 states. [2018-10-24 14:10:35,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:35,158 INFO L93 Difference]: Finished difference Result 356885 states and 381203 transitions. [2018-10-24 14:10:35,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:10:35,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 805 [2018-10-24 14:10:35,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:35,388 INFO L225 Difference]: With dead ends: 356885 [2018-10-24 14:10:35,388 INFO L226 Difference]: Without dead ends: 179238 [2018-10-24 14:10:35,491 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:36,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179238 states. [2018-10-24 14:10:37,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179238 to 173708. [2018-10-24 14:10:37,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173708 states. [2018-10-24 14:10:38,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173708 states to 173708 states and 182639 transitions. [2018-10-24 14:10:38,112 INFO L78 Accepts]: Start accepts. Automaton has 173708 states and 182639 transitions. Word has length 805 [2018-10-24 14:10:38,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:38,114 INFO L481 AbstractCegarLoop]: Abstraction has 173708 states and 182639 transitions. [2018-10-24 14:10:38,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:10:38,114 INFO L276 IsEmpty]: Start isEmpty. Operand 173708 states and 182639 transitions. [2018-10-24 14:10:38,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 892 [2018-10-24 14:10:38,169 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:38,170 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-10-24 14:10:38,170 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:38,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:38,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1472153123, now seen corresponding path program 1 times [2018-10-24 14:10:38,171 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:38,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:38,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:38,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:38,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:39,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1724 backedges. 1324 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2018-10-24 14:10:39,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:10:39,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:10:39,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:10:39,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:10:39,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:10:39,493 INFO L87 Difference]: Start difference. First operand 173708 states and 182639 transitions. Second operand 3 states. [2018-10-24 14:10:46,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:46,127 INFO L93 Difference]: Finished difference Result 348967 states and 366709 transitions. [2018-10-24 14:10:46,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:10:46,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 891 [2018-10-24 14:10:46,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:46,349 INFO L225 Difference]: With dead ends: 348967 [2018-10-24 14:10:46,349 INFO L226 Difference]: Without dead ends: 174466 [2018-10-24 14:10:46,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:10:46,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174466 states. [2018-10-24 14:10:48,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174466 to 166580. [2018-10-24 14:10:48,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166580 states. [2018-10-24 14:10:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166580 states to 166580 states and 173182 transitions. [2018-10-24 14:10:48,238 INFO L78 Accepts]: Start accepts. Automaton has 166580 states and 173182 transitions. Word has length 891 [2018-10-24 14:10:48,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:48,239 INFO L481 AbstractCegarLoop]: Abstraction has 166580 states and 173182 transitions. [2018-10-24 14:10:48,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:10:48,239 INFO L276 IsEmpty]: Start isEmpty. Operand 166580 states and 173182 transitions. [2018-10-24 14:10:48,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2018-10-24 14:10:48,282 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:48,283 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:10:48,284 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:48,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:48,284 INFO L82 PathProgramCache]: Analyzing trace with hash 86811946, now seen corresponding path program 1 times [2018-10-24 14:10:48,284 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:48,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:48,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:48,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:48,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:50,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 1174 trivial. 0 not checked. [2018-10-24 14:10:50,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:10:50,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 14:10:50,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:10:50,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:10:50,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:10:50,199 INFO L87 Difference]: Start difference. First operand 166580 states and 173182 transitions. Second operand 3 states. [2018-10-24 14:10:55,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:55,416 INFO L93 Difference]: Finished difference Result 331572 states and 344711 transitions. [2018-10-24 14:10:55,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:10:55,416 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 910 [2018-10-24 14:10:55,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:55,572 INFO L225 Difference]: With dead ends: 331572 [2018-10-24 14:10:55,572 INFO L226 Difference]: Without dead ends: 165780 [2018-10-24 14:10:55,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:10:55,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165780 states. [2018-10-24 14:10:56,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165780 to 165780. [2018-10-24 14:10:56,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165780 states. [2018-10-24 14:10:56,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165780 states to 165780 states and 172307 transitions. [2018-10-24 14:10:56,938 INFO L78 Accepts]: Start accepts. Automaton has 165780 states and 172307 transitions. Word has length 910 [2018-10-24 14:10:56,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:56,939 INFO L481 AbstractCegarLoop]: Abstraction has 165780 states and 172307 transitions. [2018-10-24 14:10:56,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:10:56,939 INFO L276 IsEmpty]: Start isEmpty. Operand 165780 states and 172307 transitions. [2018-10-24 14:10:57,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1070 [2018-10-24 14:10:57,442 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:57,443 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:10:57,444 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:57,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:57,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1054953850, now seen corresponding path program 1 times [2018-10-24 14:10:57,444 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:57,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:57,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:57,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:57,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:59,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 717 proven. 182 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-10-24 14:10:59,610 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:10:59,610 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:10:59,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:59,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-10-24 14:11:01,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 683 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2018-10-24 14:11:01,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:11:01,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-10-24 14:11:01,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:11:01,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:11:01,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:11:01,184 INFO L87 Difference]: Start difference. First operand 165780 states and 172307 transitions. Second operand 7 states. [2018-10-24 14:11:01,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 14:11:01,185 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:11:01,191 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:11:01,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:11:01 BoogieIcfgContainer [2018-10-24 14:11:01,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:11:01,193 INFO L168 Benchmark]: Toolchain (without parser) took 225312.93 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -598.3 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-24 14:11:01,194 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:11:01,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2444.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:11:01,195 INFO L168 Benchmark]: Boogie Procedure Inliner took 848.45 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 831.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:11:01,196 INFO L168 Benchmark]: Boogie Preprocessor took 429.65 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: 80.3 MB). Peak memory consumption was 80.3 MB. Max. memory is 7.1 GB. [2018-10-24 14:11:01,197 INFO L168 Benchmark]: RCFGBuilder took 13497.64 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 241.7 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 21.3 MB). Peak memory consumption was 582.2 MB. Max. memory is 7.1 GB. [2018-10-24 14:11:01,198 INFO L168 Benchmark]: TraceAbstraction took 208087.34 ms. Allocated memory was 2.6 GB in the beginning and 4.7 GB in the end (delta: 2.1 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 79.1 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 14:11:01,203 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2444.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 848.45 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 831.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 429.65 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: 80.3 MB). Peak memory consumption was 80.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13497.64 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 241.7 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 21.3 MB). Peak memory consumption was 582.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208087.34 ms. Allocated memory was 2.6 GB in the beginning and 4.7 GB in the end (delta: 2.1 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 79.1 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 87). Cancelled while BasicCegarLoop was constructing difference of abstraction (165780states) and FLOYD_HOARE automaton (currently 2 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 208.0s OverallTime, 13 OverallIterations, 7 TraceHistogramMax, 168.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9457 SDtfs, 30736 SDslu, 2882 SDs, 0 SdLazy, 59270 SolverSat, 17930 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 133.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2049 GetRequests, 2004 SyntacticMatches, 10 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184076occurred in iteration=6, 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: 23.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 60304 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 8355 NumberOfCodeBlocks, 8355 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 8338 ConstructedInterpolants, 90 QuantifiedInterpolants, 12792476 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2537 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 9883/10173 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown