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_label44_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:13:02,975 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:13:02,977 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:13:02,989 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:13:02,989 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:13:02,991 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:13:02,992 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:13:02,994 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:13:02,995 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:13:02,996 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:13:02,997 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:13:02,997 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:13:02,998 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:13:02,999 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:13:03,001 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:13:03,002 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:13:03,002 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:13:03,004 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:13:03,006 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:13:03,008 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:13:03,009 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:13:03,010 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:13:03,013 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:13:03,013 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:13:03,013 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:13:03,014 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:13:03,015 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:13:03,016 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:13:03,017 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:13:03,018 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:13:03,019 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:13:03,019 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:13:03,020 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:13:03,020 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:13:03,021 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:13:03,022 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:13:03,022 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 [2018-10-26 22:13:03,038 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:13:03,038 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:13:03,039 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:13:03,039 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:13:03,040 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:13:03,040 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:13:03,040 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:13:03,041 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:13:03,041 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:13:03,041 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:13:03,041 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:13:03,041 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:13:03,042 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:13:03,042 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:13:03,042 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:13:03,042 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:13:03,042 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:13:03,043 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:13:03,043 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:13:03,043 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:13:03,043 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:13:03,043 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:13:03,044 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:13:03,044 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:13:03,044 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:13:03,044 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:13:03,044 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:13:03,045 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 22:13:03,089 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:13:03,102 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:13:03,106 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:13:03,108 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:13:03,108 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:13:03,109 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label44_true-unreach-call.c [2018-10-26 22:13:03,169 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0a423683e/1500c608815e45628b3feaa13ad894ae/FLAG2c46a77ce [2018-10-26 22:13:04,061 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:13:04,062 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label44_true-unreach-call.c [2018-10-26 22:13:04,106 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0a423683e/1500c608815e45628b3feaa13ad894ae/FLAG2c46a77ce [2018-10-26 22:13:04,128 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0a423683e/1500c608815e45628b3feaa13ad894ae [2018-10-26 22:13:04,143 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:13:04,145 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:13:04,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:13:04,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:13:04,151 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:13:04,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:13:04" (1/1) ... [2018-10-26 22:13:04,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379aca2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:13:04, skipping insertion in model container [2018-10-26 22:13:04,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:13:04" (1/1) ... [2018-10-26 22:13:04,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:13:04,433 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:13:06,428 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:13:06,433 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:13:07,575 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:13:07,638 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:13:07,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:13:07 WrapperNode [2018-10-26 22:13:07,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:13:07,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:13:07,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:13:07,640 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:13:07,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:13:07" (1/1) ... [2018-10-26 22:13:07,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:13:07" (1/1) ... [2018-10-26 22:13:08,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:13:08,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:13:08,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:13:08,742 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:13:08,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:13:07" (1/1) ... [2018-10-26 22:13:08,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:13:07" (1/1) ... [2018-10-26 22:13:08,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:13:07" (1/1) ... [2018-10-26 22:13:08,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:13:07" (1/1) ... [2018-10-26 22:13:09,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:13:07" (1/1) ... [2018-10-26 22:13:09,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:13:07" (1/1) ... [2018-10-26 22:13:09,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:13:07" (1/1) ... [2018-10-26 22:13:09,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:13:09,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:13:09,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:13:09,588 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:13:09,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:13:07" (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 [2018-10-26 22:13:09,653 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 22:13:09,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:13:09,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:13:25,880 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:13:25,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:13:25 BoogieIcfgContainer [2018-10-26 22:13:25,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:13:25,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:13:25,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:13:25,888 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:13:25,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:13:04" (1/3) ... [2018-10-26 22:13:25,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3325fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:13:25, skipping insertion in model container [2018-10-26 22:13:25,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:13:07" (2/3) ... [2018-10-26 22:13:25,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3325fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:13:25, skipping insertion in model container [2018-10-26 22:13:25,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:13:25" (3/3) ... [2018-10-26 22:13:25,892 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label44_true-unreach-call.c [2018-10-26 22:13:25,902 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:13:25,914 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:13:25,932 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:13:25,983 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:13:25,984 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:13:25,984 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:13:25,985 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:13:25,985 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:13:25,985 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:13:25,985 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:13:25,985 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:13:25,985 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:13:26,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-26 22:13:26,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-26 22:13:26,045 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:13:26,046 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] [2018-10-26 22:13:26,048 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:13:26,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:13:26,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1433927590, now seen corresponding path program 1 times [2018-10-26 22:13:26,057 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:13:26,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:13:26,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:13:26,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:13:26,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:13:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:13:26,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:13:26,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:13:26,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:13:26,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:13:26,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:13:26,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:13:26,483 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-26 22:13:51,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:13:51,590 INFO L93 Difference]: Finished difference Result 6321 states and 12079 transitions. [2018-10-26 22:13:51,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:13:51,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-10-26 22:13:51,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:13:51,652 INFO L225 Difference]: With dead ends: 6321 [2018-10-26 22:13:51,652 INFO L226 Difference]: Without dead ends: 4565 [2018-10-26 22:13:51,662 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:13:51,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4565 states. [2018-10-26 22:13:51,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4565 to 4560. [2018-10-26 22:13:51,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4560 states. [2018-10-26 22:13:51,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 7503 transitions. [2018-10-26 22:13:51,989 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 7503 transitions. Word has length 35 [2018-10-26 22:13:51,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:13:51,990 INFO L481 AbstractCegarLoop]: Abstraction has 4560 states and 7503 transitions. [2018-10-26 22:13:51,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:13:51,990 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 7503 transitions. [2018-10-26 22:13:51,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-26 22:13:51,996 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:13:51,997 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:13:51,997 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:13:51,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:13:51,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1426030111, now seen corresponding path program 1 times [2018-10-26 22:13:51,999 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:13:51,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:13:52,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:13:52,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:13:52,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:13:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:13:52,309 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:13:52,309 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:13:52,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:13:52,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:13:52,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:13:52,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:13:52,312 INFO L87 Difference]: Start difference. First operand 4560 states and 7503 transitions. Second operand 4 states. [2018-10-26 22:14:19,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:14:19,652 INFO L93 Difference]: Finished difference Result 17539 states and 29072 transitions. [2018-10-26 22:14:19,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:14:19,653 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2018-10-26 22:14:19,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:14:19,722 INFO L225 Difference]: With dead ends: 17539 [2018-10-26 22:14:19,722 INFO L226 Difference]: Without dead ends: 12981 [2018-10-26 22:14:19,733 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 [2018-10-26 22:14:19,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12981 states. [2018-10-26 22:14:19,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12981 to 8660. [2018-10-26 22:14:19,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8660 states. [2018-10-26 22:14:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8660 states to 8660 states and 13864 transitions. [2018-10-26 22:14:19,929 INFO L78 Accepts]: Start accepts. Automaton has 8660 states and 13864 transitions. Word has length 105 [2018-10-26 22:14:19,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:14:19,930 INFO L481 AbstractCegarLoop]: Abstraction has 8660 states and 13864 transitions. [2018-10-26 22:14:19,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:14:19,931 INFO L276 IsEmpty]: Start isEmpty. Operand 8660 states and 13864 transitions. [2018-10-26 22:14:19,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-26 22:14:19,935 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:14:19,936 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:14:19,936 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:14:19,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:14:19,937 INFO L82 PathProgramCache]: Analyzing trace with hash -422930194, now seen corresponding path program 1 times [2018-10-26 22:14:19,937 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:14:19,937 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:14:19,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:14:19,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:14:19,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:14:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:14:20,275 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:14:20,275 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:14:20,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:14:20,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:14:20,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:14:20,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:14:20,277 INFO L87 Difference]: Start difference. First operand 8660 states and 13864 transitions. Second operand 4 states. [2018-10-26 22:14:43,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:14:43,693 INFO L93 Difference]: Finished difference Result 33824 states and 54421 transitions. [2018-10-26 22:14:43,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:14:43,694 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2018-10-26 22:14:43,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:14:43,784 INFO L225 Difference]: With dead ends: 33824 [2018-10-26 22:14:43,784 INFO L226 Difference]: Without dead ends: 25166 [2018-10-26 22:14:43,804 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 [2018-10-26 22:14:43,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25166 states. [2018-10-26 22:14:44,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25166 to 16872. [2018-10-26 22:14:44,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16872 states. [2018-10-26 22:14:44,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16872 states to 16872 states and 23661 transitions. [2018-10-26 22:14:44,310 INFO L78 Accepts]: Start accepts. Automaton has 16872 states and 23661 transitions. Word has length 127 [2018-10-26 22:14:44,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:14:44,310 INFO L481 AbstractCegarLoop]: Abstraction has 16872 states and 23661 transitions. [2018-10-26 22:14:44,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:14:44,312 INFO L276 IsEmpty]: Start isEmpty. Operand 16872 states and 23661 transitions. [2018-10-26 22:14:44,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-26 22:14:44,318 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:14:44,324 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:14:44,324 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:14:44,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:14:44,324 INFO L82 PathProgramCache]: Analyzing trace with hash 186252804, now seen corresponding path program 1 times [2018-10-26 22:14:44,325 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:14:44,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:14:44,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:14:44,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:14:44,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:14:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:14:44,666 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:14:44,666 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:14:44,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:14:44,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:14:44,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:14:44,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:14:44,669 INFO L87 Difference]: Start difference. First operand 16872 states and 23661 transitions. Second operand 4 states. [2018-10-26 22:15:07,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:15:07,679 INFO L93 Difference]: Finished difference Result 65437 states and 92309 transitions. [2018-10-26 22:15:07,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:15:07,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2018-10-26 22:15:07,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:15:07,758 INFO L225 Difference]: With dead ends: 65437 [2018-10-26 22:15:07,758 INFO L226 Difference]: Without dead ends: 48567 [2018-10-26 22:15:07,783 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 [2018-10-26 22:15:07,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48567 states. [2018-10-26 22:15:08,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48567 to 48556. [2018-10-26 22:15:08,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48556 states. [2018-10-26 22:15:08,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48556 states to 48556 states and 60402 transitions. [2018-10-26 22:15:08,378 INFO L78 Accepts]: Start accepts. Automaton has 48556 states and 60402 transitions. Word has length 152 [2018-10-26 22:15:08,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:15:08,378 INFO L481 AbstractCegarLoop]: Abstraction has 48556 states and 60402 transitions. [2018-10-26 22:15:08,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:15:08,379 INFO L276 IsEmpty]: Start isEmpty. Operand 48556 states and 60402 transitions. [2018-10-26 22:15:08,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2018-10-26 22:15:08,399 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:15:08,399 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:15:08,400 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:15:08,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:15:08,400 INFO L82 PathProgramCache]: Analyzing trace with hash 736486478, now seen corresponding path program 1 times [2018-10-26 22:15:08,400 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:15:08,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:15:08,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:15:08,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:15:08,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:15:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:15:08,952 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-26 22:15:09,135 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-26 22:15:09,687 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2018-10-26 22:15:09,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:15:09,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 22:15:09,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 22:15:09,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 22:15:09,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 22:15:09,689 INFO L87 Difference]: Start difference. First operand 48556 states and 60402 transitions. Second operand 7 states. [2018-10-26 22:15:33,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:15:33,311 INFO L93 Difference]: Finished difference Result 118982 states and 144120 transitions. [2018-10-26 22:15:33,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:15:33,312 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 554 [2018-10-26 22:15:33,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:15:33,385 INFO L225 Difference]: With dead ends: 118982 [2018-10-26 22:15:33,385 INFO L226 Difference]: Without dead ends: 70428 [2018-10-26 22:15:33,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-26 22:15:33,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70428 states. [2018-10-26 22:15:34,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70428 to 66324. [2018-10-26 22:15:34,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66324 states. [2018-10-26 22:15:34,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66324 states to 66324 states and 79036 transitions. [2018-10-26 22:15:34,107 INFO L78 Accepts]: Start accepts. Automaton has 66324 states and 79036 transitions. Word has length 554 [2018-10-26 22:15:34,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:15:34,107 INFO L481 AbstractCegarLoop]: Abstraction has 66324 states and 79036 transitions. [2018-10-26 22:15:34,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 22:15:34,107 INFO L276 IsEmpty]: Start isEmpty. Operand 66324 states and 79036 transitions. [2018-10-26 22:15:34,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2018-10-26 22:15:34,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:15:34,123 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:15:34,124 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:15:34,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:15:34,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1236237032, now seen corresponding path program 1 times [2018-10-26 22:15:34,124 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:15:34,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:15:34,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:15:34,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:15:34,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:15:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:15:34,809 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 515 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-10-26 22:15:34,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:15:34,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:15:34,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:15:34,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:15:34,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:15:34,811 INFO L87 Difference]: Start difference. First operand 66324 states and 79036 transitions. Second operand 4 states. [2018-10-26 22:15:58,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:15:58,191 INFO L93 Difference]: Finished difference Result 162708 states and 196899 transitions. [2018-10-26 22:15:58,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:15:58,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 582 [2018-10-26 22:15:58,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:15:58,294 INFO L225 Difference]: With dead ends: 162708 [2018-10-26 22:15:58,294 INFO L226 Difference]: Without dead ends: 96386 [2018-10-26 22:15:58,342 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 [2018-10-26 22:15:58,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96386 states. [2018-10-26 22:15:59,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96386 to 96375. [2018-10-26 22:15:59,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96375 states. [2018-10-26 22:15:59,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96375 states to 96375 states and 111945 transitions. [2018-10-26 22:15:59,985 INFO L78 Accepts]: Start accepts. Automaton has 96375 states and 111945 transitions. Word has length 582 [2018-10-26 22:15:59,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:15:59,985 INFO L481 AbstractCegarLoop]: Abstraction has 96375 states and 111945 transitions. [2018-10-26 22:15:59,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:15:59,986 INFO L276 IsEmpty]: Start isEmpty. Operand 96375 states and 111945 transitions. [2018-10-26 22:16:00,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2018-10-26 22:16:00,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:00,021 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:00,021 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:00,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:00,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1329973613, now seen corresponding path program 1 times [2018-10-26 22:16:00,023 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:00,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:00,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:00,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:00,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:01,345 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-26 22:16:01,346 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:16:01,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:16:01,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:16:01,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:16:01,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:16:01,348 INFO L87 Difference]: Start difference. First operand 96375 states and 111945 transitions. Second operand 4 states. [2018-10-26 22:16:17,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:17,523 INFO L93 Difference]: Finished difference Result 192750 states and 223895 transitions. [2018-10-26 22:16:17,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:16:17,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 890 [2018-10-26 22:16:17,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:17,633 INFO L225 Difference]: With dead ends: 192750 [2018-10-26 22:16:17,633 INFO L226 Difference]: Without dead ends: 96377 [2018-10-26 22:16:17,679 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 [2018-10-26 22:16:17,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96377 states. [2018-10-26 22:16:18,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96377 to 89537. [2018-10-26 22:16:18,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89537 states. [2018-10-26 22:16:18,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89537 states to 89537 states and 99488 transitions. [2018-10-26 22:16:18,487 INFO L78 Accepts]: Start accepts. Automaton has 89537 states and 99488 transitions. Word has length 890 [2018-10-26 22:16:18,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:18,489 INFO L481 AbstractCegarLoop]: Abstraction has 89537 states and 99488 transitions. [2018-10-26 22:16:18,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:16:18,489 INFO L276 IsEmpty]: Start isEmpty. Operand 89537 states and 99488 transitions. [2018-10-26 22:16:18,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 924 [2018-10-26 22:16:18,503 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:18,504 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:18,505 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:18,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:18,505 INFO L82 PathProgramCache]: Analyzing trace with hash 250505118, now seen corresponding path program 1 times [2018-10-26 22:16:18,505 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:18,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:18,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:18,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:18,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:19,965 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-26 22:16:19,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:16:19,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:16:19,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:16:19,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:16:19,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:16:19,967 INFO L87 Difference]: Start difference. First operand 89537 states and 99488 transitions. Second operand 4 states. [2018-10-26 22:16:42,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:42,523 INFO L93 Difference]: Finished difference Result 252980 states and 286271 transitions. [2018-10-26 22:16:42,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:16:42,524 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 923 [2018-10-26 22:16:42,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:42,774 INFO L225 Difference]: With dead ends: 252980 [2018-10-26 22:16:42,774 INFO L226 Difference]: Without dead ends: 163445 [2018-10-26 22:16:42,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:16:42,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163445 states. [2018-10-26 22:16:43,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163445 to 163365. [2018-10-26 22:16:43,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163365 states. [2018-10-26 22:16:45,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163365 states to 163365 states and 181828 transitions. [2018-10-26 22:16:45,315 INFO L78 Accepts]: Start accepts. Automaton has 163365 states and 181828 transitions. Word has length 923 [2018-10-26 22:16:45,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:45,317 INFO L481 AbstractCegarLoop]: Abstraction has 163365 states and 181828 transitions. [2018-10-26 22:16:45,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:16:45,317 INFO L276 IsEmpty]: Start isEmpty. Operand 163365 states and 181828 transitions. [2018-10-26 22:16:45,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2018-10-26 22:16:45,334 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:45,335 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:45,335 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:45,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:45,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1523479339, now seen corresponding path program 1 times [2018-10-26 22:16:45,336 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:45,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:45,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:45,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:45,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:46,602 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 527 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-10-26 22:16:46,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:16:46,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 22:16:46,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:16:46,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:16:46,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:16:46,604 INFO L87 Difference]: Start difference. First operand 163365 states and 181828 transitions. Second operand 5 states. Received shutdown request... [2018-10-26 22:17:06,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:17:06,312 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 22:17:06,318 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 22:17:06,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:17:06 BoogieIcfgContainer [2018-10-26 22:17:06,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:17:06,319 INFO L168 Benchmark]: Toolchain (without parser) took 242175.85 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -839.4 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-26 22:17:06,320 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 22:17:06,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3492.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 999.7 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-26 22:17:06,322 INFO L168 Benchmark]: Boogie Procedure Inliner took 1102.35 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 855.6 MB). Free memory was 999.7 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. [2018-10-26 22:17:06,327 INFO L168 Benchmark]: Boogie Preprocessor took 845.40 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: 105.1 MB). Peak memory consumption was 105.1 MB. Max. memory is 7.1 GB. [2018-10-26 22:17:06,328 INFO L168 Benchmark]: RCFGBuilder took 16294.93 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 274.2 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 502.6 MB). Peak memory consumption was 776.8 MB. Max. memory is 7.1 GB. [2018-10-26 22:17:06,335 INFO L168 Benchmark]: TraceAbstraction took 220434.15 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 867.2 MB). Free memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: -692.3 MB). Peak memory consumption was 174.9 MB. Max. memory is 7.1 GB. [2018-10-26 22:17:06,343 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3492.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 999.7 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1102.35 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 855.6 MB). Free memory was 999.7 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 845.40 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: 105.1 MB). Peak memory consumption was 105.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16294.93 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 274.2 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 502.6 MB). Peak memory consumption was 776.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220434.15 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 867.2 MB). Free memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: -692.3 MB). Peak memory consumption was 174.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 118). Cancelled while BasicCegarLoop was constructing difference of abstraction (163365states) and FLOYD_HOARE automaton (currently 4 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (211528 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 220.3s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 205.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14832 SDtfs, 38104 SDslu, 3540 SDs, 0 SdLazy, 83770 SolverSat, 15913 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 175.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=163365occurred 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: 7.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 23666 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 4325 NumberOfCodeBlocks, 4325 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 4316 ConstructedInterpolants, 0 QuantifiedInterpolants, 6941611 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 3269/3269 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown