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/Problem12_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:06:51,007 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:06:51,009 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:06:51,022 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:06:51,022 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:06:51,023 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:06:51,024 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:06:51,026 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:06:51,028 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:06:51,029 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:06:51,030 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:06:51,030 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:06:51,031 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:06:51,032 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:06:51,033 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:06:51,034 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:06:51,035 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:06:51,037 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:06:51,039 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:06:51,041 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:06:51,042 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:06:51,043 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:06:51,045 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:06:51,056 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 20:06:51,056 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 20:06:51,059 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 20:06:51,061 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 20:06:51,061 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 20:06:51,089 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:06:51,089 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:06:51,090 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:06:51,090 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:06:51,091 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:06:51,091 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:06:51,091 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:06:51,092 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:06:51,092 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:06:51,092 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:06:51,092 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:06:51,092 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:06:51,094 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:06:51,094 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:06:51,094 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:06:51,094 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:06:51,094 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:06:51,095 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:06:51,095 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:06:51,095 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:06:51,095 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:06:51,096 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:06:51,097 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:06:51,097 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:06:51,097 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:06:51,098 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:06:51,098 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:06:51,098 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:06:51,151 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:06:51,167 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:06:51,171 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:06:51,173 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:06:51,173 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:06:51,174 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label12_true-unreach-call.c [2018-10-23 20:06:51,241 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f3d7deb24/db96aba835a34767b83917b8af3744d7/FLAG150a0bf85 [2018-10-23 20:06:52,010 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:06:52,011 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label12_true-unreach-call.c [2018-10-23 20:06:52,051 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f3d7deb24/db96aba835a34767b83917b8af3744d7/FLAG150a0bf85 [2018-10-23 20:06:52,071 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f3d7deb24/db96aba835a34767b83917b8af3744d7 [2018-10-23 20:06:52,085 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:06:52,087 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:06:52,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:06:52,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:06:52,093 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:06:52,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:06:52" (1/1) ... [2018-10-23 20:06:52,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@482d2ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:52, skipping insertion in model container [2018-10-23 20:06:52,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:06:52" (1/1) ... [2018-10-23 20:06:52,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:06:52,278 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:06:53,614 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:06:53,618 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:06:54,201 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:06:54,234 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:06:54,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:54 WrapperNode [2018-10-23 20:06:54,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:06:54,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:06:54,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:06:54,237 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:06:54,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:54" (1/1) ... [2018-10-23 20:06:54,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:54" (1/1) ... [2018-10-23 20:06:54,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:06:54,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:06:54,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:06:54,882 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:06:54,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:54" (1/1) ... [2018-10-23 20:06:54,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:54" (1/1) ... [2018-10-23 20:06:54,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:54" (1/1) ... [2018-10-23 20:06:54,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:54" (1/1) ... [2018-10-23 20:06:55,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:54" (1/1) ... [2018-10-23 20:06:55,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:54" (1/1) ... [2018-10-23 20:06:55,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:54" (1/1) ... [2018-10-23 20:06:55,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:06:55,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:06:55,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:06:55,231 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:06:55,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:06:55,299 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:06:55,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:06:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:07:03,791 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:07:03,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:07:03 BoogieIcfgContainer [2018-10-23 20:07:03,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:07:03,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:07:03,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:07:03,797 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:07:03,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:06:52" (1/3) ... [2018-10-23 20:07:03,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@658c935d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:07:03, skipping insertion in model container [2018-10-23 20:07:03,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:54" (2/3) ... [2018-10-23 20:07:03,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@658c935d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:07:03, skipping insertion in model container [2018-10-23 20:07:03,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:07:03" (3/3) ... [2018-10-23 20:07:03,804 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label12_true-unreach-call.c [2018-10-23 20:07:03,815 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:07:03,825 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:07:03,842 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:07:03,885 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:07:03,886 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:07:03,886 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:07:03,886 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:07:03,887 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:07:03,887 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:07:03,887 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:07:03,887 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:07:03,887 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:07:03,922 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-23 20:07:03,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-23 20:07:03,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:07:03,933 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:07:03,936 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:07:03,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:07:03,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1281577798, now seen corresponding path program 1 times [2018-10-23 20:07:03,945 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:07:03,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:07:04,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:07:04,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:07:04,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:07:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:07:04,410 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-23 20:07:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:07:04,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:07:04,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:07:04,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:07:04,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:07:04,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:07:04,461 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-23 20:07:21,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:07:21,964 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-23 20:07:21,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:07:21,967 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-10-23 20:07:21,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:07:22,010 INFO L225 Difference]: With dead ends: 3146 [2018-10-23 20:07:22,010 INFO L226 Difference]: Without dead ends: 2320 [2018-10-23 20:07:22,018 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:07:22,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-23 20:07:22,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-23 20:07:22,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-23 20:07:22,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3858 transitions. [2018-10-23 20:07:22,181 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3858 transitions. Word has length 59 [2018-10-23 20:07:22,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:07:22,182 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 3858 transitions. [2018-10-23 20:07:22,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:07:22,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3858 transitions. [2018-10-23 20:07:22,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-23 20:07:22,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:07:22,194 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:07:22,194 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:07:22,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:07:22,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1104251190, now seen corresponding path program 1 times [2018-10-23 20:07:22,195 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:07:22,195 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:07:22,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:07:22,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:07:22,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:07:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:07:22,841 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 9 [2018-10-23 20:07:23,009 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 51 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:07:23,010 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:07:23,010 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:07:23,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:07:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:07:23,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:07:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:07:23,290 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:07:23,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-23 20:07:23,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:07:23,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:07:23,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:07:23,295 INFO L87 Difference]: Start difference. First operand 2320 states and 3858 transitions. Second operand 7 states. [2018-10-23 20:07:56,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:07:56,712 INFO L93 Difference]: Finished difference Result 22720 states and 38802 transitions. [2018-10-23 20:07:56,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-23 20:07:56,713 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2018-10-23 20:07:56,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:07:56,797 INFO L225 Difference]: With dead ends: 22720 [2018-10-23 20:07:56,797 INFO L226 Difference]: Without dead ends: 18143 [2018-10-23 20:07:56,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2018-10-23 20:07:56,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18143 states. [2018-10-23 20:07:57,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18143 to 9087. [2018-10-23 20:07:57,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9087 states. [2018-10-23 20:07:57,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9087 states to 9087 states and 11085 transitions. [2018-10-23 20:07:57,049 INFO L78 Accepts]: Start accepts. Automaton has 9087 states and 11085 transitions. Word has length 131 [2018-10-23 20:07:57,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:07:57,049 INFO L481 AbstractCegarLoop]: Abstraction has 9087 states and 11085 transitions. [2018-10-23 20:07:57,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:07:57,050 INFO L276 IsEmpty]: Start isEmpty. Operand 9087 states and 11085 transitions. [2018-10-23 20:07:57,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-23 20:07:57,063 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:07:57,064 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 20:07:57,064 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:07:57,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:07:57,065 INFO L82 PathProgramCache]: Analyzing trace with hash -737947407, now seen corresponding path program 1 times [2018-10-23 20:07:57,065 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:07:57,065 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:07:57,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:07:57,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:07:57,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:07:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:07:57,711 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 20:07:57,883 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2018-10-23 20:07:58,045 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-10-23 20:07:58,045 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:07:58,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 20:07:58,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 20:07:58,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 20:07:58,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:07:58,047 INFO L87 Difference]: Start difference. First operand 9087 states and 11085 transitions. Second operand 6 states. [2018-10-23 20:08:08,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:08:08,866 INFO L93 Difference]: Finished difference Result 22685 states and 27974 transitions. [2018-10-23 20:08:08,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:08:08,868 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 274 [2018-10-23 20:08:08,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:08:08,909 INFO L225 Difference]: With dead ends: 22685 [2018-10-23 20:08:08,910 INFO L226 Difference]: Without dead ends: 12095 [2018-10-23 20:08:08,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:08:08,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12095 states. [2018-10-23 20:08:09,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12095 to 12095. [2018-10-23 20:08:09,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12095 states. [2018-10-23 20:08:09,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12095 states to 12095 states and 14681 transitions. [2018-10-23 20:08:09,124 INFO L78 Accepts]: Start accepts. Automaton has 12095 states and 14681 transitions. Word has length 274 [2018-10-23 20:08:09,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:08:09,125 INFO L481 AbstractCegarLoop]: Abstraction has 12095 states and 14681 transitions. [2018-10-23 20:08:09,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 20:08:09,125 INFO L276 IsEmpty]: Start isEmpty. Operand 12095 states and 14681 transitions. [2018-10-23 20:08:09,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-10-23 20:08:09,131 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:08:09,131 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 20:08:09,132 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:08:09,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:08:09,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1911810078, now seen corresponding path program 1 times [2018-10-23 20:08:09,132 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:08:09,132 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:08:09,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:09,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:08:09,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:08:09,569 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 113 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-23 20:08:09,570 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:08:09,570 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:08:09,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:08:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:08:09,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:08:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:08:09,863 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:08:09,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 20:08:09,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:08:09,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:08:09,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:08:09,866 INFO L87 Difference]: Start difference. First operand 12095 states and 14681 transitions. Second operand 4 states. [2018-10-23 20:08:17,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:08:17,656 INFO L93 Difference]: Finished difference Result 42296 states and 52431 transitions. [2018-10-23 20:08:17,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:08:17,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 283 [2018-10-23 20:08:17,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:08:17,726 INFO L225 Difference]: With dead ends: 42296 [2018-10-23 20:08:17,726 INFO L226 Difference]: Without dead ends: 30203 [2018-10-23 20:08:17,747 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 283 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:08:17,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30203 states. [2018-10-23 20:08:18,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30203 to 18863. [2018-10-23 20:08:18,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18863 states. [2018-10-23 20:08:18,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18863 states to 18863 states and 22730 transitions. [2018-10-23 20:08:18,089 INFO L78 Accepts]: Start accepts. Automaton has 18863 states and 22730 transitions. Word has length 283 [2018-10-23 20:08:18,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:08:18,090 INFO L481 AbstractCegarLoop]: Abstraction has 18863 states and 22730 transitions. [2018-10-23 20:08:18,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:08:18,090 INFO L276 IsEmpty]: Start isEmpty. Operand 18863 states and 22730 transitions. [2018-10-23 20:08:18,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-10-23 20:08:18,099 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:08:18,099 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 20:08:18,099 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:08:18,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:08:18,100 INFO L82 PathProgramCache]: Analyzing trace with hash -2082331721, now seen corresponding path program 1 times [2018-10-23 20:08:18,100 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:08:18,100 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:08:18,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:18,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:08:18,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:08:18,539 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-10-23 20:08:18,540 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:08:18,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:08:18,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:08:18,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:08:18,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:08:18,541 INFO L87 Difference]: Start difference. First operand 18863 states and 22730 transitions. Second operand 4 states. [2018-10-23 20:08:27,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:08:27,846 INFO L93 Difference]: Finished difference Result 71564 states and 86965 transitions. [2018-10-23 20:08:27,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:08:27,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 357 [2018-10-23 20:08:27,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:08:27,949 INFO L225 Difference]: With dead ends: 71564 [2018-10-23 20:08:27,949 INFO L226 Difference]: Without dead ends: 52703 [2018-10-23 20:08:27,979 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:08:28,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52703 states. [2018-10-23 20:08:28,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52703 to 52703. [2018-10-23 20:08:28,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52703 states. [2018-10-23 20:08:28,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52703 states to 52703 states and 62446 transitions. [2018-10-23 20:08:28,636 INFO L78 Accepts]: Start accepts. Automaton has 52703 states and 62446 transitions. Word has length 357 [2018-10-23 20:08:28,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:08:28,636 INFO L481 AbstractCegarLoop]: Abstraction has 52703 states and 62446 transitions. [2018-10-23 20:08:28,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:08:28,637 INFO L276 IsEmpty]: Start isEmpty. Operand 52703 states and 62446 transitions. [2018-10-23 20:08:28,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-10-23 20:08:28,652 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:08:28,653 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 20:08:28,653 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:08:28,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:08:28,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1518724673, now seen corresponding path program 1 times [2018-10-23 20:08:28,654 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:08:28,654 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:08:28,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:28,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:08:28,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:08:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-23 20:08:28,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:08:28,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:08:28,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:08:28,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:08:28,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:08:28,994 INFO L87 Difference]: Start difference. First operand 52703 states and 62446 transitions. Second operand 3 states. [2018-10-23 20:08:36,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:08:36,140 INFO L93 Difference]: Finished difference Result 118188 states and 139932 transitions. [2018-10-23 20:08:36,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:08:36,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 361 [2018-10-23 20:08:36,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:08:36,225 INFO L225 Difference]: With dead ends: 118188 [2018-10-23 20:08:36,225 INFO L226 Difference]: Without dead ends: 65487 [2018-10-23 20:08:36,264 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:08:36,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65487 states. [2018-10-23 20:08:36,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65487 to 63231. [2018-10-23 20:08:36,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63231 states. [2018-10-23 20:08:36,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63231 states to 63231 states and 72251 transitions. [2018-10-23 20:08:36,932 INFO L78 Accepts]: Start accepts. Automaton has 63231 states and 72251 transitions. Word has length 361 [2018-10-23 20:08:36,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:08:36,932 INFO L481 AbstractCegarLoop]: Abstraction has 63231 states and 72251 transitions. [2018-10-23 20:08:36,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:08:36,933 INFO L276 IsEmpty]: Start isEmpty. Operand 63231 states and 72251 transitions. [2018-10-23 20:08:36,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-10-23 20:08:36,951 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:08:36,951 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:08:36,952 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:08:36,952 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:08:36,952 INFO L82 PathProgramCache]: Analyzing trace with hash -632950127, now seen corresponding path program 1 times [2018-10-23 20:08:36,952 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:08:36,952 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:08:36,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:36,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:08:36,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:08:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-23 20:08:37,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:08:37,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:08:37,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:08:37,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:08:37,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:08:37,644 INFO L87 Difference]: Start difference. First operand 63231 states and 72251 transitions. Second operand 5 states. [2018-10-23 20:08:49,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:08:49,360 INFO L93 Difference]: Finished difference Result 186662 states and 212762 transitions. [2018-10-23 20:08:49,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:08:49,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 393 [2018-10-23 20:08:49,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:08:49,501 INFO L225 Difference]: With dead ends: 186662 [2018-10-23 20:08:49,502 INFO L226 Difference]: Without dead ends: 123433 [2018-10-23 20:08:49,544 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:08:49,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123433 states. [2018-10-23 20:08:50,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123433 to 100121. [2018-10-23 20:08:50,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100121 states. [2018-10-23 20:08:50,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100121 states to 100121 states and 109773 transitions. [2018-10-23 20:08:50,579 INFO L78 Accepts]: Start accepts. Automaton has 100121 states and 109773 transitions. Word has length 393 [2018-10-23 20:08:50,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:08:50,580 INFO L481 AbstractCegarLoop]: Abstraction has 100121 states and 109773 transitions. [2018-10-23 20:08:50,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:08:50,580 INFO L276 IsEmpty]: Start isEmpty. Operand 100121 states and 109773 transitions. [2018-10-23 20:08:50,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2018-10-23 20:08:50,676 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:08:50,677 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:08:50,677 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:08:50,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:08:50,678 INFO L82 PathProgramCache]: Analyzing trace with hash 2084166946, now seen corresponding path program 1 times [2018-10-23 20:08:50,678 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:08:50,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:08:50,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:50,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:08:50,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:08:52,553 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 560 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-23 20:08:52,553 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:08:52,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:08:52,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:08:52,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:08:52,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:08:52,555 INFO L87 Difference]: Start difference. First operand 100121 states and 109773 transitions. Second operand 4 states. [2018-10-23 20:08:59,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:08:59,982 INFO L93 Difference]: Finished difference Result 245354 states and 269981 transitions. [2018-10-23 20:08:59,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:08:59,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 744 [2018-10-23 20:08:59,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:09:00,154 INFO L225 Difference]: With dead ends: 245354 [2018-10-23 20:09:00,154 INFO L226 Difference]: Without dead ends: 130922 [2018-10-23 20:09:00,233 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 [2018-10-23 20:09:00,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130922 states. [2018-10-23 20:09:01,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130922 to 116634. [2018-10-23 20:09:01,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116634 states. [2018-10-23 20:09:01,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116634 states to 116634 states and 126245 transitions. [2018-10-23 20:09:01,375 INFO L78 Accepts]: Start accepts. Automaton has 116634 states and 126245 transitions. Word has length 744 [2018-10-23 20:09:01,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:09:01,376 INFO L481 AbstractCegarLoop]: Abstraction has 116634 states and 126245 transitions. [2018-10-23 20:09:01,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:09:01,376 INFO L276 IsEmpty]: Start isEmpty. Operand 116634 states and 126245 transitions. [2018-10-23 20:09:02,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2018-10-23 20:09:02,042 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:09:02,043 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:09:02,043 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:09:02,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:09:02,044 INFO L82 PathProgramCache]: Analyzing trace with hash 134317932, now seen corresponding path program 1 times [2018-10-23 20:09:02,044 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:09:02,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:09:02,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:02,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:02,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:02,741 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 729 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-10-23 20:09:02,742 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:09:02,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:09:02,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:09:02,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:09:02,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:09:02,744 INFO L87 Difference]: Start difference. First operand 116634 states and 126245 transitions. Second operand 4 states. [2018-10-23 20:09:11,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:09:11,069 INFO L93 Difference]: Finished difference Result 253570 states and 275427 transitions. [2018-10-23 20:09:11,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:09:11,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 773 [2018-10-23 20:09:11,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:09:11,256 INFO L225 Difference]: With dead ends: 253570 [2018-10-23 20:09:11,256 INFO L226 Difference]: Without dead ends: 137690 [2018-10-23 20:09:11,343 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 [2018-10-23 20:09:11,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137690 states. [2018-10-23 20:09:12,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137690 to 132426. [2018-10-23 20:09:12,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132426 states. [2018-10-23 20:09:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132426 states to 132426 states and 141768 transitions. [2018-10-23 20:09:13,120 INFO L78 Accepts]: Start accepts. Automaton has 132426 states and 141768 transitions. Word has length 773 [2018-10-23 20:09:13,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:09:13,121 INFO L481 AbstractCegarLoop]: Abstraction has 132426 states and 141768 transitions. [2018-10-23 20:09:13,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:09:13,121 INFO L276 IsEmpty]: Start isEmpty. Operand 132426 states and 141768 transitions. [2018-10-23 20:09:13,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2018-10-23 20:09:13,177 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:09:13,178 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:09:13,178 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:09:13,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:09:13,179 INFO L82 PathProgramCache]: Analyzing trace with hash 904075422, now seen corresponding path program 1 times [2018-10-23 20:09:13,179 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:09:13,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:09:13,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:13,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:13,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:14,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 607 proven. 57 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-23 20:09:14,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:09:14,222 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:09:14,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:14,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:09:14,779 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 25 [2018-10-23 20:09:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 628 proven. 36 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-23 20:09:16,108 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:09:16,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-10-23 20:09:16,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:09:16,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:09:16,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:09:16,111 INFO L87 Difference]: Start difference. First operand 132426 states and 141768 transitions. Second operand 8 states. [2018-10-23 20:10:00,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:10:00,736 INFO L93 Difference]: Finished difference Result 343065 states and 368692 transitions. [2018-10-23 20:10:00,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-23 20:10:00,738 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 848 [2018-10-23 20:10:00,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:10:00,994 INFO L225 Difference]: With dead ends: 343065 [2018-10-23 20:10:00,995 INFO L226 Difference]: Without dead ends: 200843 [2018-10-23 20:10:01,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 876 GetRequests, 858 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2018-10-23 20:10:01,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200843 states. [2018-10-23 20:10:02,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200843 to 188059. [2018-10-23 20:10:02,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188059 states. [2018-10-23 20:10:03,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188059 states to 188059 states and 198465 transitions. [2018-10-23 20:10:03,830 INFO L78 Accepts]: Start accepts. Automaton has 188059 states and 198465 transitions. Word has length 848 [2018-10-23 20:10:03,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:10:03,831 INFO L481 AbstractCegarLoop]: Abstraction has 188059 states and 198465 transitions. [2018-10-23 20:10:03,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 20:10:03,831 INFO L276 IsEmpty]: Start isEmpty. Operand 188059 states and 198465 transitions. [2018-10-23 20:10:03,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1273 [2018-10-23 20:10:03,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:10:03,948 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:10:03,948 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:10:03,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:10:03,949 INFO L82 PathProgramCache]: Analyzing trace with hash -710316921, now seen corresponding path program 1 times [2018-10-23 20:10:03,949 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:10:03,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:10:03,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:03,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:10:03,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:10:04,544 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-23 20:10:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1489 backedges. 1197 proven. 12 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-10-23 20:10:06,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:10:06,316 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:10:06,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:10:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:10:06,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:10:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1489 backedges. 816 proven. 0 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2018-10-23 20:10:08,180 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:10:08,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2018-10-23 20:10:08,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 20:10:08,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 20:10:08,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-10-23 20:10:08,183 INFO L87 Difference]: Start difference. First operand 188059 states and 198465 transitions. Second operand 10 states. [2018-10-23 20:10:27,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:10:27,483 INFO L93 Difference]: Finished difference Result 424461 states and 448311 transitions. [2018-10-23 20:10:27,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-23 20:10:27,484 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1272 [2018-10-23 20:10:27,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:10:27,767 INFO L225 Difference]: With dead ends: 424461 [2018-10-23 20:10:27,767 INFO L226 Difference]: Without dead ends: 230168 [2018-10-23 20:10:27,876 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1293 GetRequests, 1277 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2018-10-23 20:10:28,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230168 states. [2018-10-23 20:10:30,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230168 to 176012. [2018-10-23 20:10:30,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176012 states. [2018-10-23 20:10:30,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176012 states to 176012 states and 182375 transitions. [2018-10-23 20:10:30,211 INFO L78 Accepts]: Start accepts. Automaton has 176012 states and 182375 transitions. Word has length 1272 [2018-10-23 20:10:30,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:10:30,211 INFO L481 AbstractCegarLoop]: Abstraction has 176012 states and 182375 transitions. [2018-10-23 20:10:30,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-23 20:10:30,212 INFO L276 IsEmpty]: Start isEmpty. Operand 176012 states and 182375 transitions. [2018-10-23 20:10:30,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1464 [2018-10-23 20:10:30,341 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:10:30,342 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:10:30,343 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:10:30,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:10:30,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1610181304, now seen corresponding path program 1 times [2018-10-23 20:10:30,344 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:10:30,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:10:30,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:30,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:10:30,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:10:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1810 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 1525 trivial. 0 not checked. [2018-10-23 20:10:36,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:10:36,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:10:36,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:10:36,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:10:36,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:10:36,769 INFO L87 Difference]: Start difference. First operand 176012 states and 182375 transitions. Second operand 4 states. Received shutdown request... [2018-10-23 20:10:44,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:10:44,764 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:10:44,769 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:10:44,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:10:44 BoogieIcfgContainer [2018-10-23 20:10:44,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:10:44,770 INFO L168 Benchmark]: Toolchain (without parser) took 232685.20 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-23 20:10:44,771 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:10:44,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2148.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-23 20:10:44,773 INFO L168 Benchmark]: Boogie Procedure Inliner took 645.22 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -985.8 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-23 20:10:44,774 INFO L168 Benchmark]: Boogie Preprocessor took 348.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. [2018-10-23 20:10:44,775 INFO L168 Benchmark]: RCFGBuilder took 8562.04 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 231.7 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -196.5 MB). Peak memory consumption was 634.5 MB. Max. memory is 7.1 GB. [2018-10-23 20:10:44,776 INFO L168 Benchmark]: TraceAbstraction took 220976.32 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -160.7 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-23 20:10:44,781 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2148.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 645.22 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -985.8 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 348.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8562.04 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 231.7 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -196.5 MB). Peak memory consumption was 634.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220976.32 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -160.7 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 186]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 186). Cancelled while BasicCegarLoop was constructing difference of abstraction (176012states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (111305 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 220.8s OverallTime, 12 OverallIterations, 6 TraceHistogramMax, 187.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6330 SDtfs, 50017 SDslu, 1746 SDs, 0 SdLazy, 103186 SolverSat, 16204 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 151.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2640 GetRequests, 2566 SyntacticMatches, 10 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=188059occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 11.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 132456 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 9.8s InterpolantComputationTime, 9492 NumberOfCodeBlocks, 9492 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 9476 ConstructedInterpolants, 22 QuantifiedInterpolants, 18581056 SizeOfPredicates, 8 NumberOfNonLiveVariables, 3027 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 16 InterpolantComputations, 11 PerfectInterpolantSequences, 10369/10483 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown