java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 21:00:21,198 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 21:00:21,200 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 21:00:21,213 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 21:00:21,213 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 21:00:21,214 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 21:00:21,216 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 21:00:21,218 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 21:00:21,219 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 21:00:21,220 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 21:00:21,221 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 21:00:21,222 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 21:00:21,223 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 21:00:21,224 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 21:00:21,225 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 21:00:21,226 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 21:00:21,226 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 21:00:21,228 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 21:00:21,231 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 21:00:21,232 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 21:00:21,233 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 21:00:21,235 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 21:00:21,237 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 21:00:21,256 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 [2018-10-23 21:00:21,282 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 21:00:21,282 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 21:00:21,283 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 21:00:21,283 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 21:00:21,286 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 21:00:21,286 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 21:00:21,286 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 21:00:21,288 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 21:00:21,288 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 21:00:21,288 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 21:00:21,288 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 21:00:21,289 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 21:00:21,289 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 21:00:21,289 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 21:00:21,289 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 21:00:21,290 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 21:00:21,290 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 21:00:21,290 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 21:00:21,290 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 21:00:21,290 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 21:00:21,291 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 21:00:21,291 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 21:00:21,291 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 21:00:21,291 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 21:00:21,291 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 21:00:21,291 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 21:00:21,293 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 21:00:21,293 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 21:00:21,351 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 21:00:21,367 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 21:00:21,370 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 21:00:21,372 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 21:00:21,373 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 21:00:21,373 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label15_true-unreach-call.c [2018-10-23 21:00:21,437 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c7399a421/d16a8161ecd44c88940e6f4846a3270f/FLAG1fc86b3b3 [2018-10-23 21:00:22,292 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 21:00:22,293 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label15_true-unreach-call.c [2018-10-23 21:00:22,356 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c7399a421/d16a8161ecd44c88940e6f4846a3270f/FLAG1fc86b3b3 [2018-10-23 21:00:22,375 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c7399a421/d16a8161ecd44c88940e6f4846a3270f [2018-10-23 21:00:22,389 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 21:00:22,391 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 21:00:22,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 21:00:22,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 21:00:22,396 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 21:00:22,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:00:22" (1/1) ... [2018-10-23 21:00:22,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d35362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:22, skipping insertion in model container [2018-10-23 21:00:22,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:00:22" (1/1) ... [2018-10-23 21:00:22,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 21:00:22,627 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 21:00:24,730 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:00:24,734 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 21:00:25,746 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:00:25,795 INFO L193 MainTranslator]: Completed translation [2018-10-23 21:00:25,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:25 WrapperNode [2018-10-23 21:00:25,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 21:00:25,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 21:00:25,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 21:00:25,797 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 21:00:25,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:25" (1/1) ... [2018-10-23 21:00:25,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:25" (1/1) ... [2018-10-23 21:00:26,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 21:00:26,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 21:00:26,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 21:00:26,927 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 21:00:26,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:25" (1/1) ... [2018-10-23 21:00:26,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:25" (1/1) ... [2018-10-23 21:00:27,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:25" (1/1) ... [2018-10-23 21:00:27,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:25" (1/1) ... [2018-10-23 21:00:27,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:25" (1/1) ... [2018-10-23 21:00:27,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:25" (1/1) ... [2018-10-23 21:00:27,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:25" (1/1) ... [2018-10-23 21:00:27,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 21:00:27,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 21:00:27,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 21:00:27,833 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 21:00:27,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:25" (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 [2018-10-23 21:00:27,886 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 21:00:27,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 21:00:27,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 21:00:47,149 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 21:00:47,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:00:47 BoogieIcfgContainer [2018-10-23 21:00:47,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 21:00:47,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 21:00:47,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 21:00:47,154 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 21:00:47,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:00:22" (1/3) ... [2018-10-23 21:00:47,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415cfde2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:00:47, skipping insertion in model container [2018-10-23 21:00:47,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:00:25" (2/3) ... [2018-10-23 21:00:47,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415cfde2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:00:47, skipping insertion in model container [2018-10-23 21:00:47,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:00:47" (3/3) ... [2018-10-23 21:00:47,159 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label15_true-unreach-call.c [2018-10-23 21:00:47,168 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 21:00:47,178 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 21:00:47,195 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 21:00:47,250 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 21:00:47,251 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 21:00:47,251 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 21:00:47,251 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 21:00:47,252 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 21:00:47,252 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 21:00:47,252 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 21:00:47,252 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 21:00:47,252 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 21:00:47,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-23 21:00:47,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-23 21:00:47,311 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:00:47,312 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] [2018-10-23 21:00:47,315 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:00:47,320 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:00:47,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1281577798, now seen corresponding path program 1 times [2018-10-23 21:00:47,322 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:00:47,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:00:47,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:47,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:00:47,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:00:47,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:00:47,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:00:47,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:00:47,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:00:47,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:00:47,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:00:47,956 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-23 21:01:13,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:01:13,492 INFO L93 Difference]: Finished difference Result 6324 states and 12081 transitions. [2018-10-23 21:01:13,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:01:13,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-10-23 21:01:13,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:01:13,553 INFO L225 Difference]: With dead ends: 6324 [2018-10-23 21:01:13,554 INFO L226 Difference]: Without dead ends: 4568 [2018-10-23 21:01:13,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:01:13,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4568 states. [2018-10-23 21:01:13,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4568 to 4563. [2018-10-23 21:01:13,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4563 states. [2018-10-23 21:01:13,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 7487 transitions. [2018-10-23 21:01:13,759 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 7487 transitions. Word has length 59 [2018-10-23 21:01:13,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:01:13,760 INFO L481 AbstractCegarLoop]: Abstraction has 4563 states and 7487 transitions. [2018-10-23 21:01:13,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:01:13,761 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 7487 transitions. [2018-10-23 21:01:13,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-23 21:01:13,767 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:01:13,768 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:01:13,768 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:01:13,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:01:13,769 INFO L82 PathProgramCache]: Analyzing trace with hash -336458499, now seen corresponding path program 1 times [2018-10-23 21:01:13,769 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:01:13,769 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:01:13,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:13,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:01:13,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:01:14,194 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:01:14,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:01:14,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:01:14,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:01:14,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:01:14,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:01:14,197 INFO L87 Difference]: Start difference. First operand 4563 states and 7487 transitions. Second operand 4 states. [2018-10-23 21:01:39,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:01:39,239 INFO L93 Difference]: Finished difference Result 17544 states and 29003 transitions. [2018-10-23 21:01:39,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:01:39,240 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2018-10-23 21:01:39,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:01:39,305 INFO L225 Difference]: With dead ends: 17544 [2018-10-23 21:01:39,305 INFO L226 Difference]: Without dead ends: 12983 [2018-10-23 21:01:39,313 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 [2018-10-23 21:01:39,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2018-10-23 21:01:39,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 8662. [2018-10-23 21:01:39,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8662 states. [2018-10-23 21:01:39,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8662 states to 8662 states and 13841 transitions. [2018-10-23 21:01:39,499 INFO L78 Accepts]: Start accepts. Automaton has 8662 states and 13841 transitions. Word has length 137 [2018-10-23 21:01:39,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:01:39,499 INFO L481 AbstractCegarLoop]: Abstraction has 8662 states and 13841 transitions. [2018-10-23 21:01:39,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:01:39,503 INFO L276 IsEmpty]: Start isEmpty. Operand 8662 states and 13841 transitions. [2018-10-23 21:01:39,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-23 21:01:39,509 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:01:39,509 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:01:39,510 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:01:39,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:01:39,510 INFO L82 PathProgramCache]: Analyzing trace with hash 159540445, now seen corresponding path program 1 times [2018-10-23 21:01:39,510 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:01:39,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:01:39,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:39,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:01:39,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:01:39,741 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:01:39,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:01:39,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:01:39,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:01:39,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:01:39,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:01:39,743 INFO L87 Difference]: Start difference. First operand 8662 states and 13841 transitions. Second operand 4 states. [2018-10-23 21:01:59,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:01:59,760 INFO L93 Difference]: Finished difference Result 33991 states and 54526 transitions. [2018-10-23 21:01:59,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:01:59,761 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2018-10-23 21:01:59,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:02:00,003 INFO L225 Difference]: With dead ends: 33991 [2018-10-23 21:02:00,003 INFO L226 Difference]: Without dead ends: 25331 [2018-10-23 21:02:00,018 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:02:00,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25331 states. [2018-10-23 21:02:00,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25331 to 25321. [2018-10-23 21:02:00,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25321 states. [2018-10-23 21:02:00,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25321 states to 25321 states and 34467 transitions. [2018-10-23 21:02:00,437 INFO L78 Accepts]: Start accepts. Automaton has 25321 states and 34467 transitions. Word has length 157 [2018-10-23 21:02:00,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:02:00,438 INFO L481 AbstractCegarLoop]: Abstraction has 25321 states and 34467 transitions. [2018-10-23 21:02:00,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:02:00,438 INFO L276 IsEmpty]: Start isEmpty. Operand 25321 states and 34467 transitions. [2018-10-23 21:02:00,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-23 21:02:00,440 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:02:00,440 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:02:00,443 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:02:00,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:02:00,443 INFO L82 PathProgramCache]: Analyzing trace with hash -706708730, now seen corresponding path program 1 times [2018-10-23 21:02:00,444 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:02:00,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:02:00,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:02:00,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:02:00,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:02:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:02:00,805 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 21:02:01,081 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-23 21:02:01,191 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-23 21:02:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:02:01,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:02:01,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 21:02:01,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 21:02:01,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 21:02:01,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 21:02:01,253 INFO L87 Difference]: Start difference. First operand 25321 states and 34467 transitions. Second operand 6 states. [2018-10-23 21:02:30,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:02:30,906 INFO L93 Difference]: Finished difference Result 82151 states and 109854 transitions. [2018-10-23 21:02:30,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 21:02:30,914 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-10-23 21:02:30,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:02:31,015 INFO L225 Difference]: With dead ends: 82151 [2018-10-23 21:02:31,016 INFO L226 Difference]: Without dead ends: 56832 [2018-10-23 21:02:31,043 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-23 21:02:31,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56832 states. [2018-10-23 21:02:31,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56832 to 55390. [2018-10-23 21:02:31,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55390 states. [2018-10-23 21:02:31,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55390 states to 55390 states and 72762 transitions. [2018-10-23 21:02:31,778 INFO L78 Accepts]: Start accepts. Automaton has 55390 states and 72762 transitions. Word has length 164 [2018-10-23 21:02:31,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:02:31,779 INFO L481 AbstractCegarLoop]: Abstraction has 55390 states and 72762 transitions. [2018-10-23 21:02:31,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 21:02:31,779 INFO L276 IsEmpty]: Start isEmpty. Operand 55390 states and 72762 transitions. [2018-10-23 21:02:31,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-10-23 21:02:31,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:02:31,787 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:02:31,787 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:02:31,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:02:31,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1700977312, now seen corresponding path program 1 times [2018-10-23 21:02:31,790 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:02:31,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:02:31,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:02:31,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:02:31,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:02:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:02:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:02:32,294 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:02:32,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:02:32,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:02:32,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:02:32,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:02:32,296 INFO L87 Difference]: Start difference. First operand 55390 states and 72762 transitions. Second operand 4 states. [2018-10-23 21:02:51,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:02:51,882 INFO L93 Difference]: Finished difference Result 139616 states and 182676 transitions. [2018-10-23 21:02:51,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:02:51,883 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 295 [2018-10-23 21:02:51,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:02:52,023 INFO L225 Difference]: With dead ends: 139616 [2018-10-23 21:02:52,024 INFO L226 Difference]: Without dead ends: 78762 [2018-10-23 21:02:52,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:02:52,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78762 states. [2018-10-23 21:02:52,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78762 to 78629. [2018-10-23 21:02:52,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78629 states. [2018-10-23 21:02:52,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78629 states to 78629 states and 97485 transitions. [2018-10-23 21:02:52,968 INFO L78 Accepts]: Start accepts. Automaton has 78629 states and 97485 transitions. Word has length 295 [2018-10-23 21:02:52,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:02:52,968 INFO L481 AbstractCegarLoop]: Abstraction has 78629 states and 97485 transitions. [2018-10-23 21:02:52,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:02:52,969 INFO L276 IsEmpty]: Start isEmpty. Operand 78629 states and 97485 transitions. [2018-10-23 21:02:52,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2018-10-23 21:02:52,984 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:02:52,985 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 21:02:52,985 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:02:52,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:02:52,986 INFO L82 PathProgramCache]: Analyzing trace with hash -358381557, now seen corresponding path program 1 times [2018-10-23 21:02:52,986 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:02:52,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:02:52,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:02:52,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:02:52,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:02:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:02:54,292 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 512 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-10-23 21:02:54,293 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:02:54,293 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:02:54,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:02:54,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:02:54,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:02:54,297 INFO L87 Difference]: Start difference. First operand 78629 states and 97485 transitions. Second operand 4 states. [2018-10-23 21:03:11,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:03:11,643 INFO L93 Difference]: Finished difference Result 155888 states and 193590 transitions. [2018-10-23 21:03:11,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:03:11,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 603 [2018-10-23 21:03:11,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:03:11,750 INFO L225 Difference]: With dead ends: 155888 [2018-10-23 21:03:11,750 INFO L226 Difference]: Without dead ends: 78627 [2018-10-23 21:03:11,805 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:03:11,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78627 states. [2018-10-23 21:03:12,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78627 to 78619. [2018-10-23 21:03:12,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78619 states. [2018-10-23 21:03:13,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78619 states to 78619 states and 88182 transitions. [2018-10-23 21:03:13,055 INFO L78 Accepts]: Start accepts. Automaton has 78619 states and 88182 transitions. Word has length 603 [2018-10-23 21:03:13,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:03:13,056 INFO L481 AbstractCegarLoop]: Abstraction has 78619 states and 88182 transitions. [2018-10-23 21:03:13,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:03:13,057 INFO L276 IsEmpty]: Start isEmpty. Operand 78619 states and 88182 transitions. [2018-10-23 21:03:13,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2018-10-23 21:03:13,075 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:03:13,076 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 21:03:13,076 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:03:13,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:03:13,077 INFO L82 PathProgramCache]: Analyzing trace with hash -5337463, now seen corresponding path program 1 times [2018-10-23 21:03:13,077 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:03:13,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:03:13,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:03:13,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:03:13,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:03:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:03:14,364 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 419 proven. 4 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2018-10-23 21:03:14,365 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 21:03:14,365 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 [2018-10-23 21:03:14,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:03:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:03:14,556 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 21:03:14,940 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2018-10-23 21:03:14,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 21:03:14,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 21:03:14,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 21:03:14,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 21:03:14,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 21:03:14,965 INFO L87 Difference]: Start difference. First operand 78619 states and 88182 transitions. Second operand 5 states. [2018-10-23 21:03:40,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:03:40,241 INFO L93 Difference]: Finished difference Result 174997 states and 195231 transitions. [2018-10-23 21:03:40,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 21:03:40,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 610 [2018-10-23 21:03:40,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:03:40,385 INFO L225 Difference]: With dead ends: 174997 [2018-10-23 21:03:40,386 INFO L226 Difference]: Without dead ends: 88173 [2018-10-23 21:03:40,442 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 610 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 21:03:40,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88173 states. [2018-10-23 21:03:42,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88173 to 86805. [2018-10-23 21:03:42,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86805 states. [2018-10-23 21:03:42,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86805 states to 86805 states and 92924 transitions. [2018-10-23 21:03:42,349 INFO L78 Accepts]: Start accepts. Automaton has 86805 states and 92924 transitions. Word has length 610 [2018-10-23 21:03:42,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:03:42,349 INFO L481 AbstractCegarLoop]: Abstraction has 86805 states and 92924 transitions. [2018-10-23 21:03:42,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 21:03:42,350 INFO L276 IsEmpty]: Start isEmpty. Operand 86805 states and 92924 transitions. [2018-10-23 21:03:42,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2018-10-23 21:03:42,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:03:42,378 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 21:03:42,378 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:03:42,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:03:42,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1094554062, now seen corresponding path program 1 times [2018-10-23 21:03:42,379 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:03:42,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:03:42,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:03:42,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:03:42,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:03:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:03:43,438 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2018-10-23 21:03:43,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:03:43,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:03:43,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 21:03:43,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 21:03:43,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:03:43,441 INFO L87 Difference]: Start difference. First operand 86805 states and 92924 transitions. Second operand 3 states. [2018-10-23 21:03:56,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:03:56,458 INFO L93 Difference]: Finished difference Result 236479 states and 254054 transitions. [2018-10-23 21:03:56,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 21:03:56,459 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 855 [2018-10-23 21:03:56,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:03:56,635 INFO L225 Difference]: With dead ends: 236479 [2018-10-23 21:03:56,635 INFO L226 Difference]: Without dead ends: 151042 [2018-10-23 21:03:56,693 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:03:56,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151042 states. [2018-10-23 21:03:57,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151042 to 151011. [2018-10-23 21:03:57,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151011 states. [2018-10-23 21:03:58,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151011 states to 151011 states and 161210 transitions. [2018-10-23 21:03:58,126 INFO L78 Accepts]: Start accepts. Automaton has 151011 states and 161210 transitions. Word has length 855 [2018-10-23 21:03:58,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:03:58,127 INFO L481 AbstractCegarLoop]: Abstraction has 151011 states and 161210 transitions. [2018-10-23 21:03:58,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 21:03:58,127 INFO L276 IsEmpty]: Start isEmpty. Operand 151011 states and 161210 transitions. [2018-10-23 21:03:58,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1154 [2018-10-23 21:03:58,202 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:03:58,203 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:03:58,203 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:03:58,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:03:58,204 INFO L82 PathProgramCache]: Analyzing trace with hash -325758145, now seen corresponding path program 1 times [2018-10-23 21:03:58,204 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:03:58,204 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:03:58,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:03:58,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:03:58,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:03:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:04:00,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 780 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-23 21:04:00,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:04:00,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:04:00,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:04:00,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:04:00,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:04:00,276 INFO L87 Difference]: Start difference. First operand 151011 states and 161210 transitions. Second operand 4 states. Received shutdown request... [2018-10-23 21:04:16,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:04:16,288 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 21:04:16,292 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 21:04:16,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:04:16 BoogieIcfgContainer [2018-10-23 21:04:16,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 21:04:16,293 INFO L168 Benchmark]: Toolchain (without parser) took 233903.67 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-23 21:04:16,295 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-23 21:04:16,295 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3404.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-23 21:04:16,296 INFO L168 Benchmark]: Boogie Procedure Inliner took 1129.94 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 856.2 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.4 MB. Max. memory is 7.1 GB. [2018-10-23 21:04:16,297 INFO L168 Benchmark]: Boogie Preprocessor took 905.73 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 91.7 MB). Peak memory consumption was 91.7 MB. Max. memory is 7.1 GB. [2018-10-23 21:04:16,298 INFO L168 Benchmark]: RCFGBuilder took 19317.07 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 289.4 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -371.5 MB). Peak memory consumption was 849.2 MB. Max. memory is 7.1 GB. [2018-10-23 21:04:16,299 INFO L168 Benchmark]: TraceAbstraction took 209142.04 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: -89.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-23 21:04:16,304 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 3404.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1129.94 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 856.2 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 905.73 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 91.7 MB). Peak memory consumption was 91.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 19317.07 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 289.4 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -371.5 MB). Peak memory consumption was 849.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209142.04 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: -89.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 190]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 190). Cancelled while BasicCegarLoop was constructing difference of abstraction (151011states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (169731 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 209.0s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 192.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12301 SDtfs, 37297 SDslu, 3297 SDs, 0 SdLazy, 76572 SolverSat, 18255 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 165.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 655 GetRequests, 623 SyntacticMatches, 9 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=151011occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 7318 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 4643 NumberOfCodeBlocks, 4643 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 4633 ConstructedInterpolants, 0 QuantifiedInterpolants, 7949695 SizeOfPredicates, 5 NumberOfNonLiveVariables, 721 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 3600/3604 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown