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_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:01:42,948 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:01:42,953 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:01:42,967 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:01:42,968 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:01:42,969 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:01:42,970 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:01:42,972 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:01:42,974 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:01:42,974 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:01:42,975 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:01:42,976 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:01:42,977 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:01:42,978 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:01:42,979 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:01:42,980 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:01:42,980 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:01:42,982 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:01:42,984 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:01:42,991 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:01:42,993 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:01:42,995 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:01:43,000 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 17:01:43,014 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 17:01:43,035 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:01:43,035 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:01:43,036 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:01:43,036 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 17:01:43,037 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 17:01:43,038 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 17:01:43,038 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 17:01:43,038 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:01:43,038 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:01:43,038 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:01:43,039 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:01:43,039 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:01:43,039 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:01:43,039 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:01:43,040 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:01:43,040 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:01:43,040 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:01:43,040 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:01:43,040 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:01:43,041 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:01:43,041 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:01:43,041 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:01:43,041 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:01:43,041 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 17:01:43,042 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:01:43,043 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:01:43,043 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:01:43,043 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:01:43,093 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:01:43,107 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:01:43,112 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:01:43,113 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:01:43,114 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:01:43,115 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label02_true-unreach-call.c [2018-10-24 17:01:43,173 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3c7466b6a/41917331c001427b9d9ea840c5a89e50/FLAG364d26cfa [2018-10-24 17:01:44,041 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:01:44,042 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label02_true-unreach-call.c [2018-10-24 17:01:44,090 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3c7466b6a/41917331c001427b9d9ea840c5a89e50/FLAG364d26cfa [2018-10-24 17:01:44,114 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3c7466b6a/41917331c001427b9d9ea840c5a89e50 [2018-10-24 17:01:44,127 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:01:44,131 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:01:44,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:01:44,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:01:44,137 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:01:44,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:01:44" (1/1) ... [2018-10-24 17:01:44,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c474bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:44, skipping insertion in model container [2018-10-24 17:01:44,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:01:44" (1/1) ... [2018-10-24 17:01:44,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:01:44,435 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:01:46,384 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:01:46,389 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:01:47,544 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:01:47,593 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:01:47,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:47 WrapperNode [2018-10-24 17:01:47,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:01:47,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:01:47,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:01:47,595 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:01:47,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:47" (1/1) ... [2018-10-24 17:01:47,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:47" (1/1) ... [2018-10-24 17:01:48,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:01:48,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:01:48,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:01:48,810 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:01:48,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:47" (1/1) ... [2018-10-24 17:01:48,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:47" (1/1) ... [2018-10-24 17:01:48,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:47" (1/1) ... [2018-10-24 17:01:48,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:47" (1/1) ... [2018-10-24 17:01:49,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:47" (1/1) ... [2018-10-24 17:01:49,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:47" (1/1) ... [2018-10-24 17:01:49,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:47" (1/1) ... [2018-10-24 17:01:49,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:01:49,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:01:49,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:01:49,541 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:01:49,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:47" (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 17:01:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 17:01:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:01:49,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:02:06,620 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:02:06,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:02:06 BoogieIcfgContainer [2018-10-24 17:02:06,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:02:06,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:02:06,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:02:06,627 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:02:06,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:01:44" (1/3) ... [2018-10-24 17:02:06,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c1f568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:02:06, skipping insertion in model container [2018-10-24 17:02:06,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:47" (2/3) ... [2018-10-24 17:02:06,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c1f568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:02:06, skipping insertion in model container [2018-10-24 17:02:06,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:02:06" (3/3) ... [2018-10-24 17:02:06,634 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label02_true-unreach-call.c [2018-10-24 17:02:06,644 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:02:06,660 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:02:06,679 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:02:06,741 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 17:02:06,742 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:02:06,743 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:02:06,743 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:02:06,743 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:02:06,743 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:02:06,743 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:02:06,743 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:02:06,744 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:02:06,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 17:02:06,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-24 17:02:06,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:02:06,819 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:02:06,822 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:02:06,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:02:06,830 INFO L82 PathProgramCache]: Analyzing trace with hash -757100326, now seen corresponding path program 1 times [2018-10-24 17:02:06,832 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:02:06,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:02:06,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:02:06,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:02:06,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:02:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:02:07,433 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 17:02:07,436 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:02:07,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:02:07,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:02:07,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:02:07,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:02:07,462 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 17:02:35,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:02:35,228 INFO L93 Difference]: Finished difference Result 6419 states and 12268 transitions. [2018-10-24 17:02:35,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:02:35,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2018-10-24 17:02:35,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:02:35,288 INFO L225 Difference]: With dead ends: 6419 [2018-10-24 17:02:35,289 INFO L226 Difference]: Without dead ends: 4663 [2018-10-24 17:02:35,301 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 17:02:35,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4663 states. [2018-10-24 17:02:35,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4663 to 4573. [2018-10-24 17:02:35,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4573 states. [2018-10-24 17:02:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 7863 transitions. [2018-10-24 17:02:35,509 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 7863 transitions. Word has length 67 [2018-10-24 17:02:35,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:02:35,510 INFO L481 AbstractCegarLoop]: Abstraction has 4573 states and 7863 transitions. [2018-10-24 17:02:35,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:02:35,510 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 7863 transitions. [2018-10-24 17:02:35,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-24 17:02:35,518 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:02:35,518 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:02:35,519 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:02:35,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:02:35,519 INFO L82 PathProgramCache]: Analyzing trace with hash 297182960, now seen corresponding path program 1 times [2018-10-24 17:02:35,519 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:02:35,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:02:35,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:02:35,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:02:35,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:02:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:02:35,972 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:02:35,973 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:02:35,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:02:35,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:02:35,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:02:35,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:02:35,976 INFO L87 Difference]: Start difference. First operand 4573 states and 7863 transitions. Second operand 4 states. [2018-10-24 17:03:00,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:03:00,257 INFO L93 Difference]: Finished difference Result 17564 states and 30487 transitions. [2018-10-24 17:03:00,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:03:00,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2018-10-24 17:03:00,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:03:00,323 INFO L225 Difference]: With dead ends: 17564 [2018-10-24 17:03:00,323 INFO L226 Difference]: Without dead ends: 12993 [2018-10-24 17:03:00,332 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 17:03:00,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12993 states. [2018-10-24 17:03:00,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12993 to 8672. [2018-10-24 17:03:00,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8672 states. [2018-10-24 17:03:00,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8672 states to 8672 states and 14512 transitions. [2018-10-24 17:03:00,551 INFO L78 Accepts]: Start accepts. Automaton has 8672 states and 14512 transitions. Word has length 151 [2018-10-24 17:03:00,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:03:00,552 INFO L481 AbstractCegarLoop]: Abstraction has 8672 states and 14512 transitions. [2018-10-24 17:03:00,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:03:00,552 INFO L276 IsEmpty]: Start isEmpty. Operand 8672 states and 14512 transitions. [2018-10-24 17:03:00,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-24 17:03:00,563 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:03:00,564 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:03:00,565 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:03:00,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:03:00,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1159514843, now seen corresponding path program 1 times [2018-10-24 17:03:00,566 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:03:00,566 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:03:00,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:00,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:03:00,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:03:00,921 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:03:00,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:03:00,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:03:00,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:03:00,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:03:00,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:03:00,923 INFO L87 Difference]: Start difference. First operand 8672 states and 14512 transitions. Second operand 4 states. [2018-10-24 17:03:23,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:03:23,650 INFO L93 Difference]: Finished difference Result 34022 states and 57203 transitions. [2018-10-24 17:03:23,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:03:23,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2018-10-24 17:03:23,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:03:23,719 INFO L225 Difference]: With dead ends: 34022 [2018-10-24 17:03:23,719 INFO L226 Difference]: Without dead ends: 25352 [2018-10-24 17:03:23,733 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 17:03:23,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25352 states. [2018-10-24 17:03:24,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25352 to 25338. [2018-10-24 17:03:24,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25338 states. [2018-10-24 17:03:24,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25338 states to 25338 states and 36988 transitions. [2018-10-24 17:03:24,115 INFO L78 Accepts]: Start accepts. Automaton has 25338 states and 36988 transitions. Word has length 191 [2018-10-24 17:03:24,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:03:24,116 INFO L481 AbstractCegarLoop]: Abstraction has 25338 states and 36988 transitions. [2018-10-24 17:03:24,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:03:24,116 INFO L276 IsEmpty]: Start isEmpty. Operand 25338 states and 36988 transitions. [2018-10-24 17:03:24,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-10-24 17:03:24,125 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:03:24,125 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 17:03:24,126 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:03:24,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:03:24,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1089657292, now seen corresponding path program 1 times [2018-10-24 17:03:24,126 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:03:24,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:03:24,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:24,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:03:24,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:03:24,681 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-10-24 17:03:24,681 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:03:24,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:03:24,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:03:24,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:03:24,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:03:24,683 INFO L87 Difference]: Start difference. First operand 25338 states and 36988 transitions. Second operand 4 states. [2018-10-24 17:03:45,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:03:45,284 INFO L93 Difference]: Finished difference Result 93031 states and 135352 transitions. [2018-10-24 17:03:45,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:03:45,285 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 375 [2018-10-24 17:03:45,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:03:45,403 INFO L225 Difference]: With dead ends: 93031 [2018-10-24 17:03:45,404 INFO L226 Difference]: Without dead ends: 67695 [2018-10-24 17:03:45,449 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 17:03:45,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67695 states. [2018-10-24 17:03:46,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67695 to 64956. [2018-10-24 17:03:46,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64956 states. [2018-10-24 17:03:46,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64956 states to 64956 states and 86129 transitions. [2018-10-24 17:03:46,268 INFO L78 Accepts]: Start accepts. Automaton has 64956 states and 86129 transitions. Word has length 375 [2018-10-24 17:03:46,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:03:46,269 INFO L481 AbstractCegarLoop]: Abstraction has 64956 states and 86129 transitions. [2018-10-24 17:03:46,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:03:46,269 INFO L276 IsEmpty]: Start isEmpty. Operand 64956 states and 86129 transitions. [2018-10-24 17:03:46,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2018-10-24 17:03:46,284 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:03:46,284 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 17:03:46,285 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:03:46,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:03:46,285 INFO L82 PathProgramCache]: Analyzing trace with hash 864219911, now seen corresponding path program 1 times [2018-10-24 17:03:46,285 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:03:46,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:03:46,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:46,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:03:46,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:03:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-10-24 17:03:46,762 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:03:46,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:03:46,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:03:46,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:03:46,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:03:46,764 INFO L87 Difference]: Start difference. First operand 64956 states and 86129 transitions. Second operand 4 states. [2018-10-24 17:04:07,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:04:07,888 INFO L93 Difference]: Finished difference Result 235259 states and 309485 transitions. [2018-10-24 17:04:07,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:04:07,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 476 [2018-10-24 17:04:07,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:04:08,106 INFO L225 Difference]: With dead ends: 235259 [2018-10-24 17:04:08,107 INFO L226 Difference]: Without dead ends: 170305 [2018-10-24 17:04:08,173 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 17:04:08,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170305 states. [2018-10-24 17:04:09,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170305 to 168871. [2018-10-24 17:04:09,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168871 states. [2018-10-24 17:04:09,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168871 states to 168871 states and 202431 transitions. [2018-10-24 17:04:09,698 INFO L78 Accepts]: Start accepts. Automaton has 168871 states and 202431 transitions. Word has length 476 [2018-10-24 17:04:09,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:04:09,698 INFO L481 AbstractCegarLoop]: Abstraction has 168871 states and 202431 transitions. [2018-10-24 17:04:09,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:04:09,698 INFO L276 IsEmpty]: Start isEmpty. Operand 168871 states and 202431 transitions. [2018-10-24 17:04:09,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 947 [2018-10-24 17:04:09,743 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:04:09,744 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:04:09,745 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:04:09,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:04:09,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1340282011, now seen corresponding path program 1 times [2018-10-24 17:04:09,745 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:04:09,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:04:09,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:09,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:09,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:11,768 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-10-24 17:04:11,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:04:11,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:04:11,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:04:11,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:04:11,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:11,770 INFO L87 Difference]: Start difference. First operand 168871 states and 202431 transitions. Second operand 4 states. [2018-10-24 17:04:34,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:04:34,779 INFO L93 Difference]: Finished difference Result 430683 states and 522687 transitions. [2018-10-24 17:04:34,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:04:34,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 946 [2018-10-24 17:04:34,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:04:35,203 INFO L225 Difference]: With dead ends: 430683 [2018-10-24 17:04:35,204 INFO L226 Difference]: Without dead ends: 263180 [2018-10-24 17:04:35,317 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 17:04:35,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263180 states. [2018-10-24 17:04:38,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263180 to 231736. [2018-10-24 17:04:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231736 states. [2018-10-24 17:04:38,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231736 states to 231736 states and 273447 transitions. [2018-10-24 17:04:38,757 INFO L78 Accepts]: Start accepts. Automaton has 231736 states and 273447 transitions. Word has length 946 [2018-10-24 17:04:38,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:04:38,758 INFO L481 AbstractCegarLoop]: Abstraction has 231736 states and 273447 transitions. [2018-10-24 17:04:38,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:04:38,759 INFO L276 IsEmpty]: Start isEmpty. Operand 231736 states and 273447 transitions. [2018-10-24 17:04:38,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2018-10-24 17:04:38,778 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:04:38,779 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:04:38,779 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:04:38,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:04:38,780 INFO L82 PathProgramCache]: Analyzing trace with hash -329799909, now seen corresponding path program 1 times [2018-10-24 17:04:38,780 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:04:38,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:04:38,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:38,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:38,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:40,181 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-24 17:04:40,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:04:40,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:04:40,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:04:40,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:04:40,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:40,185 INFO L87 Difference]: Start difference. First operand 231736 states and 273447 transitions. Second operand 4 states. [2018-10-24 17:04:58,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:04:58,934 INFO L93 Difference]: Finished difference Result 460733 states and 543839 transitions. [2018-10-24 17:04:58,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:04:58,934 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 955 [2018-10-24 17:04:58,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:04:59,253 INFO L225 Difference]: With dead ends: 460733 [2018-10-24 17:04:59,254 INFO L226 Difference]: Without dead ends: 230365 [2018-10-24 17:04:59,380 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:59,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230365 states. [2018-10-24 17:05:02,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230365 to 219424. [2018-10-24 17:05:02,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219424 states. [2018-10-24 17:05:02,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219424 states to 219424 states and 242045 transitions. [2018-10-24 17:05:02,790 INFO L78 Accepts]: Start accepts. Automaton has 219424 states and 242045 transitions. Word has length 955 [2018-10-24 17:05:02,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:05:02,791 INFO L481 AbstractCegarLoop]: Abstraction has 219424 states and 242045 transitions. [2018-10-24 17:05:02,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:05:02,792 INFO L276 IsEmpty]: Start isEmpty. Operand 219424 states and 242045 transitions. [2018-10-24 17:05:02,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1087 [2018-10-24 17:05:02,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:05:02,813 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:05:02,813 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:05:02,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:05:02,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1282144835, now seen corresponding path program 1 times [2018-10-24 17:05:02,814 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:05:02,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:05:02,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:02,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:02,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:03,600 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-10-24 17:05:07,744 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 464 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2018-10-24 17:05:07,744 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:05:07,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:05:07,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 17:05:07,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 17:05:07,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:05:07,746 INFO L87 Difference]: Start difference. First operand 219424 states and 242045 transitions. Second operand 7 states. Received shutdown request... [2018-10-24 17:05:38,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 17:05:38,314 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:05:38,323 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:05:38,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:05:38 BoogieIcfgContainer [2018-10-24 17:05:38,324 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:05:38,324 INFO L168 Benchmark]: Toolchain (without parser) took 234196.38 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 836.0 MB. Max. memory is 7.1 GB. [2018-10-24 17:05:38,325 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:05:38,326 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3462.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 978.6 MB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:05:38,327 INFO L168 Benchmark]: Boogie Procedure Inliner took 1213.91 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 842.0 MB). Free memory was 978.6 MB 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 17:05:38,328 INFO L168 Benchmark]: Boogie Preprocessor took 730.60 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: 82.5 MB). Peak memory consumption was 82.5 MB. Max. memory is 7.1 GB. [2018-10-24 17:05:38,328 INFO L168 Benchmark]: RCFGBuilder took 17081.39 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 285.2 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 491.7 MB). Peak memory consumption was 776.9 MB. Max. memory is 7.1 GB. [2018-10-24 17:05:38,329 INFO L168 Benchmark]: TraceAbstraction took 211700.62 ms. Allocated memory was 2.6 GB in the beginning and 4.1 GB in the end (delta: 1.5 GB). Free memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: -1.6 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:05:38,334 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3462.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 978.6 MB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1213.91 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 842.0 MB). Free memory was 978.6 MB 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 730.60 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: 82.5 MB). Peak memory consumption was 82.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17081.39 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 285.2 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 491.7 MB). Peak memory consumption was 776.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211700.62 ms. Allocated memory was 2.6 GB in the beginning and 4.1 GB in the end (delta: 1.5 GB). Free memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: -1.6 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 214]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 214). Cancelled while BasicCegarLoop was constructing difference of abstraction (219424states) and FLOYD_HOARE automaton (currently 6 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (289605 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 211.5s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 190.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10892 SDtfs, 33962 SDslu, 3431 SDs, 0 SdLazy, 73653 SolverSat, 19504 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 155.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=231736occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.9s AutomataMinimizationTime, 7 MinimizatonAttempts, 50983 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 4247 NumberOfCodeBlocks, 4247 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 4239 ConstructedInterpolants, 0 QuantifiedInterpolants, 7180818 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 3166/3166 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown