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_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:05:43,559 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:05:43,561 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:05:43,577 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:05:43,577 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:05:43,578 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:05:43,580 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:05:43,582 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:05:43,583 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:05:43,584 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:05:43,585 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:05:43,585 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:05:43,586 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:05:43,587 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:05:43,588 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:05:43,589 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:05:43,590 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:05:43,592 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:05:43,594 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:05:43,596 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:05:43,597 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:05:43,598 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:05:43,600 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 17:05:43,609 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 17:05:43,637 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:05:43,637 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:05:43,638 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:05:43,638 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 17:05:43,639 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 17:05:43,639 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 17:05:43,639 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 17:05:43,640 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:05:43,640 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:05:43,640 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:05:43,640 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:05:43,640 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:05:43,641 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:05:43,641 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:05:43,641 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:05:43,641 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:05:43,641 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:05:43,642 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:05:43,642 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:05:43,642 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:05:43,642 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:05:43,642 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:05:43,642 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:05:43,643 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 17:05:43,643 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:05:43,643 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:05:43,643 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:05:43,643 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:05:43,707 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:05:43,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:05:43,726 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:05:43,727 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:05:43,728 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:05:43,729 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label24_true-unreach-call.c [2018-10-24 17:05:43,798 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2fec85d26/1fcd0e926282482da75d6b53318d5f27/FLAGc5a4ac36f [2018-10-24 17:05:44,695 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:05:44,696 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label24_true-unreach-call.c [2018-10-24 17:05:44,742 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2fec85d26/1fcd0e926282482da75d6b53318d5f27/FLAGc5a4ac36f [2018-10-24 17:05:44,765 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2fec85d26/1fcd0e926282482da75d6b53318d5f27 [2018-10-24 17:05:44,780 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:05:44,782 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:05:44,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:05:44,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:05:44,791 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:05:44,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:05:44" (1/1) ... [2018-10-24 17:05:44,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6895558e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:44, skipping insertion in model container [2018-10-24 17:05:44,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:05:44" (1/1) ... [2018-10-24 17:05:44,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:05:45,096 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:05:47,105 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:05:47,110 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:05:48,293 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:05:48,345 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:05:48,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:48 WrapperNode [2018-10-24 17:05:48,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:05:48,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:05:48,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:05:48,349 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:05:48,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:48" (1/1) ... [2018-10-24 17:05:48,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:48" (1/1) ... [2018-10-24 17:05:49,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:05:49,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:05:49,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:05:49,481 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:05:49,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:48" (1/1) ... [2018-10-24 17:05:49,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:48" (1/1) ... [2018-10-24 17:05:49,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:48" (1/1) ... [2018-10-24 17:05:49,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:48" (1/1) ... [2018-10-24 17:05:49,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:48" (1/1) ... [2018-10-24 17:05:49,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:48" (1/1) ... [2018-10-24 17:05:50,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:48" (1/1) ... [2018-10-24 17:05:50,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:05:50,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:05:50,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:05:50,202 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:05:50,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:48" (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 17:05:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 17:05:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:05:50,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:06:07,080 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:06:07,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:06:07 BoogieIcfgContainer [2018-10-24 17:06:07,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:06:07,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:06:07,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:06:07,086 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:06:07,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:05:44" (1/3) ... [2018-10-24 17:06:07,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e400d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:06:07, skipping insertion in model container [2018-10-24 17:06:07,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:48" (2/3) ... [2018-10-24 17:06:07,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e400d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:06:07, skipping insertion in model container [2018-10-24 17:06:07,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:06:07" (3/3) ... [2018-10-24 17:06:07,090 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label24_true-unreach-call.c [2018-10-24 17:06:07,099 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:06:07,108 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:06:07,126 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:06:07,177 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 17:06:07,178 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:06:07,178 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:06:07,178 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:06:07,178 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:06:07,178 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:06:07,178 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:06:07,178 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:06:07,178 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:06:07,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 17:06:07,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-24 17:06:07,243 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:06:07,244 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:06:07,247 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:06:07,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:06:07,253 INFO L82 PathProgramCache]: Analyzing trace with hash 279835594, now seen corresponding path program 1 times [2018-10-24 17:06:07,255 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:06:07,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:06:07,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:07,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:07,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:07,806 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 17:06:07,809 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:06:07,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:06:07,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:06:07,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:06:07,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:06:07,833 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 17:06:30,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:06:30,961 INFO L93 Difference]: Finished difference Result 6326 states and 12085 transitions. [2018-10-24 17:06:30,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:06:30,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-10-24 17:06:30,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:06:31,022 INFO L225 Difference]: With dead ends: 6326 [2018-10-24 17:06:31,022 INFO L226 Difference]: Without dead ends: 4570 [2018-10-24 17:06:31,038 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 [2018-10-24 17:06:31,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2018-10-24 17:06:31,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 4564. [2018-10-24 17:06:31,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4564 states. [2018-10-24 17:06:31,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 7499 transitions. [2018-10-24 17:06:31,237 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 7499 transitions. Word has length 46 [2018-10-24 17:06:31,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:06:31,238 INFO L481 AbstractCegarLoop]: Abstraction has 4564 states and 7499 transitions. [2018-10-24 17:06:31,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:06:31,238 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 7499 transitions. [2018-10-24 17:06:31,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-24 17:06:31,247 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:06:31,247 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:06:31,248 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:06:31,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:06:31,248 INFO L82 PathProgramCache]: Analyzing trace with hash -2006626889, now seen corresponding path program 1 times [2018-10-24 17:06:31,249 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:06:31,249 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:06:31,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:31,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:31,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:31,538 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:06:31,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:06:31,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:06:31,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:06:31,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:06:31,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:06:31,541 INFO L87 Difference]: Start difference. First operand 4564 states and 7499 transitions. Second operand 4 states. [2018-10-24 17:07:04,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:07:04,092 INFO L93 Difference]: Finished difference Result 17552 states and 29056 transitions. [2018-10-24 17:07:04,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:07:04,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2018-10-24 17:07:04,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:07:04,159 INFO L225 Difference]: With dead ends: 17552 [2018-10-24 17:07:04,159 INFO L226 Difference]: Without dead ends: 12990 [2018-10-24 17:07:04,169 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 [2018-10-24 17:07:04,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2018-10-24 17:07:04,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 8666. [2018-10-24 17:07:04,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8666 states. [2018-10-24 17:07:04,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8666 states to 8666 states and 13862 transitions. [2018-10-24 17:07:04,364 INFO L78 Accepts]: Start accepts. Automaton has 8666 states and 13862 transitions. Word has length 150 [2018-10-24 17:07:04,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:07:04,364 INFO L481 AbstractCegarLoop]: Abstraction has 8666 states and 13862 transitions. [2018-10-24 17:07:04,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:07:04,365 INFO L276 IsEmpty]: Start isEmpty. Operand 8666 states and 13862 transitions. [2018-10-24 17:07:04,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-24 17:07:04,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:07:04,369 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:07:04,369 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:07:04,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:07:04,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1483607059, now seen corresponding path program 1 times [2018-10-24 17:07:04,370 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:07:04,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:07:04,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:04,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:04,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:04,728 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:07:04,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:07:04,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:07:04,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:07:04,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:07:04,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:07:04,732 INFO L87 Difference]: Start difference. First operand 8666 states and 13862 transitions. Second operand 4 states. [2018-10-24 17:07:25,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:07:25,849 INFO L93 Difference]: Finished difference Result 33844 states and 54415 transitions. [2018-10-24 17:07:25,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:07:25,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2018-10-24 17:07:25,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:07:25,922 INFO L225 Difference]: With dead ends: 33844 [2018-10-24 17:07:25,923 INFO L226 Difference]: Without dead ends: 25180 [2018-10-24 17:07:25,935 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 17:07:25,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25180 states. [2018-10-24 17:07:26,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25180 to 25142. [2018-10-24 17:07:26,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25142 states. [2018-10-24 17:07:26,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25142 states to 25142 states and 35896 transitions. [2018-10-24 17:07:26,321 INFO L78 Accepts]: Start accepts. Automaton has 25142 states and 35896 transitions. Word has length 154 [2018-10-24 17:07:26,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:07:26,321 INFO L481 AbstractCegarLoop]: Abstraction has 25142 states and 35896 transitions. [2018-10-24 17:07:26,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:07:26,321 INFO L276 IsEmpty]: Start isEmpty. Operand 25142 states and 35896 transitions. [2018-10-24 17:07:26,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-24 17:07:26,325 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:07:26,325 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:07:26,325 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:07:26,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:07:26,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1749040983, now seen corresponding path program 1 times [2018-10-24 17:07:26,326 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:07:26,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:07:26,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:26,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:26,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:07:26,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:07:26,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:07:26,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:07:26,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:07:26,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:07:26,651 INFO L87 Difference]: Start difference. First operand 25142 states and 35896 transitions. Second operand 4 states. [2018-10-24 17:07:43,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:07:43,964 INFO L93 Difference]: Finished difference Result 98404 states and 140811 transitions. [2018-10-24 17:07:43,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:07:43,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2018-10-24 17:07:43,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:07:44,083 INFO L225 Difference]: With dead ends: 98404 [2018-10-24 17:07:44,084 INFO L226 Difference]: Without dead ends: 73264 [2018-10-24 17:07:44,122 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 17:07:44,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73264 states. [2018-10-24 17:07:44,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73264 to 73244. [2018-10-24 17:07:44,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73244 states. [2018-10-24 17:07:45,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73244 states to 73244 states and 91796 transitions. [2018-10-24 17:07:45,079 INFO L78 Accepts]: Start accepts. Automaton has 73244 states and 91796 transitions. Word has length 177 [2018-10-24 17:07:45,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:07:45,081 INFO L481 AbstractCegarLoop]: Abstraction has 73244 states and 91796 transitions. [2018-10-24 17:07:45,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:07:45,081 INFO L276 IsEmpty]: Start isEmpty. Operand 73244 states and 91796 transitions. [2018-10-24 17:07:45,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2018-10-24 17:07:45,093 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:07:45,093 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:07:45,094 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:07:45,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:07:45,094 INFO L82 PathProgramCache]: Analyzing trace with hash -775084423, now seen corresponding path program 1 times [2018-10-24 17:07:45,094 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:07:45,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:07:45,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:45,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:45,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:45,830 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-24 17:07:45,961 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-10-24 17:07:46,870 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-10-24 17:07:46,871 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:07:46,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:07:46,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 17:07:46,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 17:07:46,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:07:46,874 INFO L87 Difference]: Start difference. First operand 73244 states and 91796 transitions. Second operand 7 states. [2018-10-24 17:08:22,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:08:22,697 INFO L93 Difference]: Finished difference Result 172454 states and 210831 transitions. [2018-10-24 17:08:22,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:08:22,699 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 501 [2018-10-24 17:08:22,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:08:22,828 INFO L225 Difference]: With dead ends: 172454 [2018-10-24 17:08:22,828 INFO L226 Difference]: Without dead ends: 99212 [2018-10-24 17:08:22,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-24 17:08:22,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99212 states. [2018-10-24 17:08:23,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99212 to 95108. [2018-10-24 17:08:23,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95108 states. [2018-10-24 17:08:23,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95108 states to 95108 states and 114317 transitions. [2018-10-24 17:08:23,875 INFO L78 Accepts]: Start accepts. Automaton has 95108 states and 114317 transitions. Word has length 501 [2018-10-24 17:08:23,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:08:23,875 INFO L481 AbstractCegarLoop]: Abstraction has 95108 states and 114317 transitions. [2018-10-24 17:08:23,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 17:08:23,876 INFO L276 IsEmpty]: Start isEmpty. Operand 95108 states and 114317 transitions. [2018-10-24 17:08:23,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2018-10-24 17:08:23,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:08:23,890 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:08:23,890 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:08:23,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:08:23,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1403289569, now seen corresponding path program 1 times [2018-10-24 17:08:23,892 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:08:23,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:08:23,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:23,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:08:23,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:08:24,596 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 418 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-10-24 17:08:24,597 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:08:24,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:08:24,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:08:24,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:08:24,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:08:24,599 INFO L87 Difference]: Start difference. First operand 95108 states and 114317 transitions. Second operand 4 states. [2018-10-24 17:08:44,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:08:44,124 INFO L93 Difference]: Finished difference Result 238036 states and 291038 transitions. [2018-10-24 17:08:44,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:08:44,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 529 [2018-10-24 17:08:44,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:08:44,283 INFO L225 Difference]: With dead ends: 238036 [2018-10-24 17:08:44,283 INFO L226 Difference]: Without dead ends: 142930 [2018-10-24 17:08:44,361 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 [2018-10-24 17:08:44,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142930 states. [2018-10-24 17:08:46,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142930 to 142919. [2018-10-24 17:08:46,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142919 states. [2018-10-24 17:08:46,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142919 states to 142919 states and 167354 transitions. [2018-10-24 17:08:46,290 INFO L78 Accepts]: Start accepts. Automaton has 142919 states and 167354 transitions. Word has length 529 [2018-10-24 17:08:46,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:08:46,291 INFO L481 AbstractCegarLoop]: Abstraction has 142919 states and 167354 transitions. [2018-10-24 17:08:46,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:08:46,292 INFO L276 IsEmpty]: Start isEmpty. Operand 142919 states and 167354 transitions. [2018-10-24 17:08:46,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 902 [2018-10-24 17:08:46,329 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:08:46,330 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:08:46,331 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:08:46,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:08:46,331 INFO L82 PathProgramCache]: Analyzing trace with hash -162915854, now seen corresponding path program 1 times [2018-10-24 17:08:46,331 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:08:46,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:08:46,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:46,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:08:46,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:08:47,086 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 17:08:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-24 17:08:47,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:08:47,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:08:47,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:08:47,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:08:47,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:08:47,549 INFO L87 Difference]: Start difference. First operand 142919 states and 167354 transitions. Second operand 4 states. [2018-10-24 17:09:05,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:09:05,263 INFO L93 Difference]: Finished difference Result 285839 states and 334715 transitions. [2018-10-24 17:09:05,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:09:05,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 901 [2018-10-24 17:09:05,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:09:05,435 INFO L225 Difference]: With dead ends: 285839 [2018-10-24 17:09:05,435 INFO L226 Difference]: Without dead ends: 142922 [2018-10-24 17:09:05,516 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:09:05,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142922 states. [2018-10-24 17:09:07,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142922 to 131983. [2018-10-24 17:09:07,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131983 states. [2018-10-24 17:09:07,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131983 states to 131983 states and 147278 transitions. [2018-10-24 17:09:07,810 INFO L78 Accepts]: Start accepts. Automaton has 131983 states and 147278 transitions. Word has length 901 [2018-10-24 17:09:07,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:09:07,812 INFO L481 AbstractCegarLoop]: Abstraction has 131983 states and 147278 transitions. [2018-10-24 17:09:07,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:09:07,812 INFO L276 IsEmpty]: Start isEmpty. Operand 131983 states and 147278 transitions. [2018-10-24 17:09:07,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2018-10-24 17:09:07,826 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:09:07,827 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:09:07,827 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:09:07,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:09:07,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1040125018, now seen corresponding path program 1 times [2018-10-24 17:09:07,828 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:09:07,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:09:07,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:07,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:09:07,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:09:08,977 WARN L179 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-10-24 17:09:09,545 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2018-10-24 17:09:09,546 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:09:09,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:09:09,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:09:09,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:09:09,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:09:09,548 INFO L87 Difference]: Start difference. First operand 131983 states and 147278 transitions. Second operand 4 states. [2018-10-24 17:09:33,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:09:33,691 INFO L93 Difference]: Finished difference Result 451281 states and 505312 transitions. [2018-10-24 17:09:33,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:09:33,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 919 [2018-10-24 17:09:33,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:09:34,084 INFO L225 Difference]: With dead ends: 451281 [2018-10-24 17:09:34,084 INFO L226 Difference]: Without dead ends: 315195 [2018-10-24 17:09:34,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:09:34,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315195 states. [2018-10-24 17:09:37,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315195 to 313672. [2018-10-24 17:09:37,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313672 states. [2018-10-24 17:09:38,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313672 states to 313672 states and 340746 transitions. [2018-10-24 17:09:38,295 INFO L78 Accepts]: Start accepts. Automaton has 313672 states and 340746 transitions. Word has length 919 [2018-10-24 17:09:38,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:09:38,296 INFO L481 AbstractCegarLoop]: Abstraction has 313672 states and 340746 transitions. [2018-10-24 17:09:38,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:09:38,297 INFO L276 IsEmpty]: Start isEmpty. Operand 313672 states and 340746 transitions. [2018-10-24 17:09:38,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1145 [2018-10-24 17:09:38,318 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:09:38,319 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:09:38,319 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:09:38,320 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:09:38,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1323120000, now seen corresponding path program 1 times [2018-10-24 17:09:38,320 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:09:38,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:09:38,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:38,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:09:38,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:09:39,218 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 Received shutdown request... [2018-10-24 17:09:45,734 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 563 proven. 4 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-10-24 17:09:45,734 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:09:45,734 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 17:09:45,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:09:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:09:46,120 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:09:46,172 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 17:09:46,373 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:09:46,374 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:09:46,379 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:09:46,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:09:46 BoogieIcfgContainer [2018-10-24 17:09:46,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:09:46,380 INFO L168 Benchmark]: Toolchain (without parser) took 241599.91 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 263.1 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-24 17:09:46,382 INFO L168 Benchmark]: CDTParser took 0.25 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 17:09:46,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3562.43 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: 401.7 MB). Peak memory consumption was 401.7 MB. Max. memory is 7.1 GB. [2018-10-24 17:09:46,383 INFO L168 Benchmark]: Boogie Procedure Inliner took 1134.41 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 835.2 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 117.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:09:46,384 INFO L168 Benchmark]: Boogie Preprocessor took 720.49 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: 109.5 MB). Peak memory consumption was 109.5 MB. Max. memory is 7.1 GB. [2018-10-24 17:09:46,385 INFO L168 Benchmark]: RCFGBuilder took 16879.52 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 312.0 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -363.8 MB). Peak memory consumption was 826.2 MB. Max. memory is 7.1 GB. [2018-10-24 17:09:46,386 INFO L168 Benchmark]: TraceAbstraction took 219297.40 ms. Allocated memory was 2.7 GB in the beginning and 3.4 GB in the end (delta: 720.4 MB). Free memory was 2.4 GB in the beginning and 1.1 GB in the end (delta: 1.2 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 17:09:46,391 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 3562.43 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: 401.7 MB). Peak memory consumption was 401.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1134.41 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 835.2 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 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 720.49 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: 109.5 MB). Peak memory consumption was 109.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16879.52 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 312.0 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -363.8 MB). Peak memory consumption was 826.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219297.40 ms. Allocated memory was 2.7 GB in the beginning and 3.4 GB in the end (delta: 720.4 MB). Free memory was 2.4 GB in the beginning and 1.1 GB in the end (delta: 1.2 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 151]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 151). Cancelled while BasicCegarLoop was analyzing trace of length 1145 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 5 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 219.2s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 192.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9018 SDtfs, 31978 SDslu, 3756 SDs, 0 SdLazy, 81646 SolverSat, 17770 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 163.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=313672occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 11.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 20965 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 3377 NumberOfCodeBlocks, 3377 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 3369 ConstructedInterpolants, 0 QuantifiedInterpolants, 5014169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 2231/2231 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown