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_label03_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:58:07,797 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:58:07,799 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:58:07,814 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:58:07,814 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:58:07,816 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:58:07,817 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:58:07,819 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:58:07,820 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:58:07,821 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:58:07,822 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:58:07,822 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:58:07,823 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:58:07,824 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:58:07,825 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:58:07,826 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:58:07,827 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:58:07,829 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:58:07,831 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:58:07,833 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:58:07,835 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:58:07,840 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:58:07,843 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:58:07,851 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 20:58:07,870 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:58:07,870 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:58:07,871 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:58:07,871 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:58:07,871 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:58:07,872 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:58:07,872 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:58:07,872 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:58:07,872 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:58:07,872 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:58:07,873 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:58:07,873 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:58:07,873 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:58:07,873 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:58:07,873 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:58:07,874 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:58:07,874 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:58:07,874 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:58:07,874 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:58:07,874 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:58:07,875 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:58:07,875 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:58:07,875 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:58:07,875 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:58:07,875 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:58:07,876 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:58:07,877 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:58:07,877 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:58:07,936 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:58:07,956 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:58:07,961 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:58:07,962 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:58:07,963 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:58:07,964 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label03_true-unreach-call.c [2018-10-23 20:58:08,031 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/58400f548/d9e62aa51cc84c83a089a3d92221d4ec/FLAG5c2288af8 [2018-10-23 20:58:08,907 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:58:08,908 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label03_true-unreach-call.c [2018-10-23 20:58:08,952 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/58400f548/d9e62aa51cc84c83a089a3d92221d4ec/FLAG5c2288af8 [2018-10-23 20:58:08,968 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/58400f548/d9e62aa51cc84c83a089a3d92221d4ec [2018-10-23 20:58:08,980 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:58:08,982 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:58:08,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:58:08,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:58:08,991 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:58:08,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:58:08" (1/1) ... [2018-10-23 20:58:08,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@213e9420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:08, skipping insertion in model container [2018-10-23 20:58:08,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:58:08" (1/1) ... [2018-10-23 20:58:09,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:58:09,268 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:58:11,456 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:58:11,462 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:58:12,680 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:58:12,738 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:58:12,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:12 WrapperNode [2018-10-23 20:58:12,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:58:12,741 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:58:12,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:58:12,742 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:58:12,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:12" (1/1) ... [2018-10-23 20:58:12,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:12" (1/1) ... [2018-10-23 20:58:13,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:58:13,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:58:13,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:58:13,929 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:58:13,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:12" (1/1) ... [2018-10-23 20:58:13,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:12" (1/1) ... [2018-10-23 20:58:14,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:12" (1/1) ... [2018-10-23 20:58:14,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:12" (1/1) ... [2018-10-23 20:58:14,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:12" (1/1) ... [2018-10-23 20:58:14,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:12" (1/1) ... [2018-10-23 20:58:14,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:12" (1/1) ... [2018-10-23 20:58:14,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:58:14,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:58:14,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:58:14,692 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:58:14,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:12" (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 20:58:14,764 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:58:14,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:58:14,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:58:31,875 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:58:31,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:58:31 BoogieIcfgContainer [2018-10-23 20:58:31,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:58:31,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:58:31,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:58:31,881 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:58:31,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:58:08" (1/3) ... [2018-10-23 20:58:31,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bcf69a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:58:31, skipping insertion in model container [2018-10-23 20:58:31,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:12" (2/3) ... [2018-10-23 20:58:31,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bcf69a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:58:31, skipping insertion in model container [2018-10-23 20:58:31,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:58:31" (3/3) ... [2018-10-23 20:58:31,885 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label03_true-unreach-call.c [2018-10-23 20:58:31,895 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:58:31,906 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:58:31,925 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:58:31,991 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:58:31,992 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:58:31,993 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:58:31,993 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:58:31,993 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:58:31,993 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:58:31,993 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:58:31,993 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:58:31,994 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:58:32,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-23 20:58:32,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-23 20:58:32,063 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:58:32,064 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] [2018-10-23 20:58:32,067 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:58:32,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:58:32,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1482679290, now seen corresponding path program 1 times [2018-10-23 20:58:32,075 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:58:32,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:58:32,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:58:32,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:58:32,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:58:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:58:32,618 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 20:58:32,621 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:58:32,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:58:32,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:58:32,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:58:32,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:58:32,647 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-23 20:58:56,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:58:56,025 INFO L93 Difference]: Finished difference Result 6324 states and 12081 transitions. [2018-10-23 20:58:56,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:58:56,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-10-23 20:58:56,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:58:56,089 INFO L225 Difference]: With dead ends: 6324 [2018-10-23 20:58:56,089 INFO L226 Difference]: Without dead ends: 4568 [2018-10-23 20:58:56,100 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 20:58:56,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4568 states. [2018-10-23 20:58:56,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4568 to 4563. [2018-10-23 20:58:56,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4563 states. [2018-10-23 20:58:56,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 7487 transitions. [2018-10-23 20:58:56,305 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 7487 transitions. Word has length 58 [2018-10-23 20:58:56,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:58:56,305 INFO L481 AbstractCegarLoop]: Abstraction has 4563 states and 7487 transitions. [2018-10-23 20:58:56,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:58:56,306 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 7487 transitions. [2018-10-23 20:58:56,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-23 20:58:56,312 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:58:56,314 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, 1, 1, 1, 1, 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 20:58:56,314 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:58:56,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:58:56,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1551936202, now seen corresponding path program 1 times [2018-10-23 20:58:56,315 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:58:56,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:58:56,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:58:56,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:58:56,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:58:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:58:56,708 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:58:56,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:58:56,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:58:56,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:58:56,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:58:56,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:58:56,713 INFO L87 Difference]: Start difference. First operand 4563 states and 7487 transitions. Second operand 4 states. [2018-10-23 20:59:23,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:59:23,736 INFO L93 Difference]: Finished difference Result 17544 states and 29003 transitions. [2018-10-23 20:59:23,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:59:23,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2018-10-23 20:59:23,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:59:23,807 INFO L225 Difference]: With dead ends: 17544 [2018-10-23 20:59:23,807 INFO L226 Difference]: Without dead ends: 12983 [2018-10-23 20:59:23,816 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 20:59:23,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2018-10-23 20:59:23,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 8662. [2018-10-23 20:59:23,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8662 states. [2018-10-23 20:59:24,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8662 states to 8662 states and 13841 transitions. [2018-10-23 20:59:24,017 INFO L78 Accepts]: Start accepts. Automaton has 8662 states and 13841 transitions. Word has length 136 [2018-10-23 20:59:24,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:59:24,017 INFO L481 AbstractCegarLoop]: Abstraction has 8662 states and 13841 transitions. [2018-10-23 20:59:24,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:59:24,018 INFO L276 IsEmpty]: Start isEmpty. Operand 8662 states and 13841 transitions. [2018-10-23 20:59:24,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-23 20:59:24,027 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:59:24,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:24,027 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:59:24,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:59:24,028 INFO L82 PathProgramCache]: Analyzing trace with hash 53337046, now seen corresponding path program 1 times [2018-10-23 20:59:24,028 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:59:24,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:59:24,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:59:24,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:59:24,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:59:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:59:24,328 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:59:24,329 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:59:24,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:59:24,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:59:24,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:59:24,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:59:24,330 INFO L87 Difference]: Start difference. First operand 8662 states and 13841 transitions. Second operand 4 states. [2018-10-23 20:59:45,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:59:45,592 INFO L93 Difference]: Finished difference Result 33991 states and 54526 transitions. [2018-10-23 20:59:45,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:59:45,593 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2018-10-23 20:59:45,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:59:45,677 INFO L225 Difference]: With dead ends: 33991 [2018-10-23 20:59:45,677 INFO L226 Difference]: Without dead ends: 25331 [2018-10-23 20:59:45,694 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 20:59:45,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25331 states. [2018-10-23 20:59:46,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25331 to 25321. [2018-10-23 20:59:46,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25321 states. [2018-10-23 20:59:46,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25321 states to 25321 states and 34467 transitions. [2018-10-23 20:59:46,128 INFO L78 Accepts]: Start accepts. Automaton has 25321 states and 34467 transitions. Word has length 156 [2018-10-23 20:59:46,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:59:46,129 INFO L481 AbstractCegarLoop]: Abstraction has 25321 states and 34467 transitions. [2018-10-23 20:59:46,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:59:46,129 INFO L276 IsEmpty]: Start isEmpty. Operand 25321 states and 34467 transitions. [2018-10-23 20:59:46,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-23 20:59:46,131 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:59:46,131 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:46,132 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:59:46,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:59:46,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1163001105, now seen corresponding path program 1 times [2018-10-23 20:59:46,132 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:59:46,132 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:59:46,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:59:46,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:59:46,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:59:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:59:46,683 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-23 20:59:46,926 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-23 20:59:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:59:47,049 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:59:47,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 20:59:47,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 20:59:47,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 20:59:47,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:59:47,051 INFO L87 Difference]: Start difference. First operand 25321 states and 34467 transitions. Second operand 6 states. [2018-10-23 21:00:15,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:00:15,332 INFO L93 Difference]: Finished difference Result 82151 states and 109854 transitions. [2018-10-23 21:00:15,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 21:00:15,333 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2018-10-23 21:00:15,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:00:15,445 INFO L225 Difference]: With dead ends: 82151 [2018-10-23 21:00:15,445 INFO L226 Difference]: Without dead ends: 56832 [2018-10-23 21:00:15,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-23 21:00:15,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56832 states. [2018-10-23 21:00:16,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56832 to 55390. [2018-10-23 21:00:16,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55390 states. [2018-10-23 21:00:16,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55390 states to 55390 states and 72762 transitions. [2018-10-23 21:00:16,204 INFO L78 Accepts]: Start accepts. Automaton has 55390 states and 72762 transitions. Word has length 163 [2018-10-23 21:00:16,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:00:16,205 INFO L481 AbstractCegarLoop]: Abstraction has 55390 states and 72762 transitions. [2018-10-23 21:00:16,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 21:00:16,205 INFO L276 IsEmpty]: Start isEmpty. Operand 55390 states and 72762 transitions. [2018-10-23 21:00:16,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-10-23 21:00:16,210 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:00:16,210 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:00:16,211 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:00:16,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:00:16,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1047820557, now seen corresponding path program 1 times [2018-10-23 21:00:16,212 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:00:16,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:00:16,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:16,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:00:16,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:00:16,660 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:00:16,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:00:16,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:00:16,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:00:16,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:00:16,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:00:16,662 INFO L87 Difference]: Start difference. First operand 55390 states and 72762 transitions. Second operand 4 states. [2018-10-23 21:00:37,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:00:37,731 INFO L93 Difference]: Finished difference Result 140975 states and 184048 transitions. [2018-10-23 21:00:37,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:00:37,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 294 [2018-10-23 21:00:37,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:00:37,881 INFO L225 Difference]: With dead ends: 140975 [2018-10-23 21:00:37,881 INFO L226 Difference]: Without dead ends: 80121 [2018-10-23 21:00:37,929 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 21:00:37,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80121 states. [2018-10-23 21:00:38,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80121 to 75896. [2018-10-23 21:00:38,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75896 states. [2018-10-23 21:00:38,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75896 states to 75896 states and 95166 transitions. [2018-10-23 21:00:38,745 INFO L78 Accepts]: Start accepts. Automaton has 75896 states and 95166 transitions. Word has length 294 [2018-10-23 21:00:38,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:00:38,745 INFO L481 AbstractCegarLoop]: Abstraction has 75896 states and 95166 transitions. [2018-10-23 21:00:38,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:00:38,746 INFO L276 IsEmpty]: Start isEmpty. Operand 75896 states and 95166 transitions. [2018-10-23 21:00:38,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2018-10-23 21:00:38,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:00:38,774 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 21:00:38,774 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:00:38,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:00:38,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1838479028, now seen corresponding path program 1 times [2018-10-23 21:00:38,775 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:00:38,775 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:00:38,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:38,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:00:38,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:00:39,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 822 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-10-23 21:00:39,722 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:00:39,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:00:39,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:00:39,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:00:39,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:00:39,726 INFO L87 Difference]: Start difference. First operand 75896 states and 95166 transitions. Second operand 4 states. [2018-10-23 21:00:57,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:00:57,097 INFO L93 Difference]: Finished difference Result 170911 states and 214797 transitions. [2018-10-23 21:00:57,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:00:57,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 768 [2018-10-23 21:00:57,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:00:57,215 INFO L225 Difference]: With dead ends: 170911 [2018-10-23 21:00:57,215 INFO L226 Difference]: Without dead ends: 95017 [2018-10-23 21:00:57,270 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 21:00:57,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95017 states. [2018-10-23 21:00:58,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95017 to 95007. [2018-10-23 21:00:58,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95007 states. [2018-10-23 21:00:58,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95007 states to 95007 states and 110244 transitions. [2018-10-23 21:00:58,139 INFO L78 Accepts]: Start accepts. Automaton has 95007 states and 110244 transitions. Word has length 768 [2018-10-23 21:00:58,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:00:58,139 INFO L481 AbstractCegarLoop]: Abstraction has 95007 states and 110244 transitions. [2018-10-23 21:00:58,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:00:58,140 INFO L276 IsEmpty]: Start isEmpty. Operand 95007 states and 110244 transitions. [2018-10-23 21:00:58,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 910 [2018-10-23 21:00:58,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:00:58,176 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:00:58,177 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:00:58,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:00:58,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1650178156, now seen corresponding path program 1 times [2018-10-23 21:00:58,177 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:00:58,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:00:58,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:58,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:00:58,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:01:00,163 WARN L179 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-10-23 21:01:00,788 WARN L179 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2018-10-23 21:01:01,768 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 313 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-10-23 21:01:01,768 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 21:01:01,768 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 21:01:01,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:01:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:01:02,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 21:01:03,136 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-10-23 21:01:03,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 21:01:03,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 21:01:03,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 21:01:03,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 21:01:03,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 21:01:03,161 INFO L87 Difference]: Start difference. First operand 95007 states and 110244 transitions. Second operand 5 states. [2018-10-23 21:01:26,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:01:26,092 INFO L93 Difference]: Finished difference Result 211871 states and 244307 transitions. [2018-10-23 21:01:26,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 21:01:26,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 909 [2018-10-23 21:01:26,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:01:26,338 INFO L225 Difference]: With dead ends: 211871 [2018-10-23 21:01:26,339 INFO L226 Difference]: Without dead ends: 110027 [2018-10-23 21:01:26,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 909 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 21:01:26,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110027 states. [2018-10-23 21:01:27,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110027 to 108659. [2018-10-23 21:01:27,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108659 states. [2018-10-23 21:01:27,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108659 states to 108659 states and 118452 transitions. [2018-10-23 21:01:27,892 INFO L78 Accepts]: Start accepts. Automaton has 108659 states and 118452 transitions. Word has length 909 [2018-10-23 21:01:27,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:01:27,893 INFO L481 AbstractCegarLoop]: Abstraction has 108659 states and 118452 transitions. [2018-10-23 21:01:27,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 21:01:27,893 INFO L276 IsEmpty]: Start isEmpty. Operand 108659 states and 118452 transitions. [2018-10-23 21:01:27,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2018-10-23 21:01:27,915 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:01:27,916 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:27,916 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:01:27,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:01:27,917 INFO L82 PathProgramCache]: Analyzing trace with hash 202496572, now seen corresponding path program 1 times [2018-10-23 21:01:27,917 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:01:27,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:01:27,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:27,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:01:27,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:01:29,825 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2018-10-23 21:01:29,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:01:29,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:01:29,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 21:01:29,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 21:01:29,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:01:29,828 INFO L87 Difference]: Start difference. First operand 108659 states and 118452 transitions. Second operand 3 states. [2018-10-23 21:01:42,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:01:42,229 INFO L93 Difference]: Finished difference Result 291100 states and 318316 transitions. [2018-10-23 21:01:42,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 21:01:42,240 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 977 [2018-10-23 21:01:42,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:01:42,447 INFO L225 Difference]: With dead ends: 291100 [2018-10-23 21:01:42,447 INFO L226 Difference]: Without dead ends: 182443 [2018-10-23 21:01:42,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:01:42,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182443 states. [2018-10-23 21:01:44,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182443 to 178320. [2018-10-23 21:01:44,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178320 states. [2018-10-23 21:01:45,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178320 states to 178320 states and 194140 transitions. [2018-10-23 21:01:45,753 INFO L78 Accepts]: Start accepts. Automaton has 178320 states and 194140 transitions. Word has length 977 [2018-10-23 21:01:45,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:01:45,754 INFO L481 AbstractCegarLoop]: Abstraction has 178320 states and 194140 transitions. [2018-10-23 21:01:45,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 21:01:45,755 INFO L276 IsEmpty]: Start isEmpty. Operand 178320 states and 194140 transitions. [2018-10-23 21:01:45,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2018-10-23 21:01:45,778 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:01:45,779 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:45,780 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:01:45,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:01:45,780 INFO L82 PathProgramCache]: Analyzing trace with hash 790513728, now seen corresponding path program 1 times [2018-10-23 21:01:45,780 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:01:45,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:01:45,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:45,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:01:45,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:01:46,920 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 453 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-23 21:01:46,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:01:46,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:01:46,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:01:46,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:01:46,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:01:46,922 INFO L87 Difference]: Start difference. First operand 178320 states and 194140 transitions. Second operand 4 states. Received shutdown request... [2018-10-23 21:02:01,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:02:01,958 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 21:02:01,964 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 21:02:01,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:02:01 BoogieIcfgContainer [2018-10-23 21:02:01,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 21:02:01,965 INFO L168 Benchmark]: Toolchain (without parser) took 232984.21 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 735.9 MB in the end (delta: 658.7 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-23 21:02:01,966 INFO L168 Benchmark]: CDTParser took 0.26 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 21:02:01,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3754.55 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 21:02:01,967 INFO L168 Benchmark]: Boogie Procedure Inliner took 1187.42 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 844.6 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 117.2 MB. Max. memory is 7.1 GB. [2018-10-23 21:02:01,969 INFO L168 Benchmark]: Boogie Preprocessor took 762.24 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: 105.2 MB). Peak memory consumption was 105.2 MB. Max. memory is 7.1 GB. [2018-10-23 21:02:01,970 INFO L168 Benchmark]: RCFGBuilder took 17184.63 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 290.5 MB). Free memory was 2.0 GB in the beginning and 1.6 GB in the end (delta: 466.4 MB). Peak memory consumption was 756.8 MB. Max. memory is 7.1 GB. [2018-10-23 21:02:01,971 INFO L168 Benchmark]: TraceAbstraction took 210086.81 ms. Allocated memory was 2.7 GB in the beginning and 3.3 GB in the end (delta: 668.5 MB). Free memory was 1.6 GB in the beginning and 735.9 MB in the end (delta: 816.4 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-23 21:02:01,976 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 3754.55 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 1187.42 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 844.6 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 117.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 762.24 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: 105.2 MB). Peak memory consumption was 105.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17184.63 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 290.5 MB). Free memory was 2.0 GB in the beginning and 1.6 GB in the end (delta: 466.4 MB). Peak memory consumption was 756.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210086.81 ms. Allocated memory was 2.7 GB in the beginning and 3.3 GB in the end (delta: 668.5 MB). Free memory was 1.6 GB in the beginning and 735.9 MB in the end (delta: 816.4 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 187]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 187). Cancelled while BasicCegarLoop was constructing difference of abstraction (178320states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (240699 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 209.9s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 190.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11202 SDtfs, 36021 SDslu, 3088 SDs, 0 SdLazy, 78001 SolverSat, 18340 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 161.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 956 GetRequests, 922 SyntacticMatches, 11 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=178320occurred 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: 7.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 15504 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.8s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 5358 NumberOfCodeBlocks, 5358 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 5348 ConstructedInterpolants, 0 QuantifiedInterpolants, 9955443 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1008 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 3446/3450 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown