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/Problem13_label36_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:11:21,375 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:11:21,377 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:11:21,389 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:11:21,390 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:11:21,391 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:11:21,392 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:11:21,394 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:11:21,395 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:11:21,396 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:11:21,397 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:11:21,397 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:11:21,398 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:11:21,399 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:11:21,400 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:11:21,401 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:11:21,402 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:11:21,404 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:11:21,406 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:11:21,407 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:11:21,408 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:11:21,409 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:11:21,417 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:11:21,417 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:11:21,417 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:11:21,418 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:11:21,419 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:11:21,420 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:11:21,423 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:11:21,426 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:11:21,426 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:11:21,427 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 14:11:21,430 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 14:11:21,463 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:11:21,464 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:11:21,467 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:11:21,467 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:11:21,468 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:11:21,468 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:11:21,468 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:11:21,468 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:11:21,470 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:11:21,470 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:11:21,470 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:11:21,471 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:11:21,471 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:11:21,471 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:11:21,471 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:11:21,471 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:11:21,472 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:11:21,472 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:11:21,472 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:11:21,472 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:11:21,472 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:11:21,472 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:11:21,473 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:11:21,473 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:11:21,473 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:11:21,473 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:11:21,473 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:11:21,473 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:11:21,534 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:11:21,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:11:21,556 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:11:21,558 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:11:21,559 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:11:21,560 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label36_false-unreach-call.c [2018-10-24 14:11:21,622 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/43d3daed1/e9f78a1d6aa84055912041c38bc8d175/FLAG1f0d105b6 [2018-10-24 14:11:22,455 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:11:22,456 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label36_false-unreach-call.c [2018-10-24 14:11:22,498 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/43d3daed1/e9f78a1d6aa84055912041c38bc8d175/FLAG1f0d105b6 [2018-10-24 14:11:22,520 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/43d3daed1/e9f78a1d6aa84055912041c38bc8d175 [2018-10-24 14:11:22,533 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:11:22,535 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:11:22,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:11:22,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:11:22,541 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:11:22,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:11:22" (1/1) ... [2018-10-24 14:11:22,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:22, skipping insertion in model container [2018-10-24 14:11:22,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:11:22" (1/1) ... [2018-10-24 14:11:22,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:11:22,765 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:11:24,308 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:11:24,313 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:11:25,079 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:11:25,119 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:11:25,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:25 WrapperNode [2018-10-24 14:11:25,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:11:25,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:11:25,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:11:25,121 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:11:25,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:25" (1/1) ... [2018-10-24 14:11:25,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:25" (1/1) ... [2018-10-24 14:11:25,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:11:25,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:11:25,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:11:25,959 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:11:25,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:25" (1/1) ... [2018-10-24 14:11:25,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:25" (1/1) ... [2018-10-24 14:11:26,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:25" (1/1) ... [2018-10-24 14:11:26,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:25" (1/1) ... [2018-10-24 14:11:26,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:25" (1/1) ... [2018-10-24 14:11:26,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:25" (1/1) ... [2018-10-24 14:11:26,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:25" (1/1) ... [2018-10-24 14:11:26,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:11:26,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:11:26,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:11:26,490 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:11:26,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:11:26,572 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:11:26,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:11:26,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:11:37,989 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:11:37,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:11:37 BoogieIcfgContainer [2018-10-24 14:11:37,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:11:37,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:11:37,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:11:37,994 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:11:37,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:11:22" (1/3) ... [2018-10-24 14:11:37,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370b9554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:11:37, skipping insertion in model container [2018-10-24 14:11:37,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:25" (2/3) ... [2018-10-24 14:11:37,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370b9554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:11:37, skipping insertion in model container [2018-10-24 14:11:37,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:11:37" (3/3) ... [2018-10-24 14:11:37,998 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label36_false-unreach-call.c [2018-10-24 14:11:38,008 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:11:38,018 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:11:38,035 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:11:38,089 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:11:38,089 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:11:38,089 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:11:38,089 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:11:38,090 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:11:38,090 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:11:38,090 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:11:38,090 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:11:38,090 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:11:38,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 14:11:38,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-24 14:11:38,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:11:38,136 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:11:38,139 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:11:38,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:11:38,147 INFO L82 PathProgramCache]: Analyzing trace with hash -643220670, now seen corresponding path program 1 times [2018-10-24 14:11:38,149 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:11:38,150 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:11:38,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:38,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:38,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:38,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:11:38,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:11:38,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:11:38,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:11:38,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:11:38,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:11:38,545 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 14:11:53,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:11:53,043 INFO L93 Difference]: Finished difference Result 3896 states and 7286 transitions. [2018-10-24 14:11:53,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:11:53,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-10-24 14:11:53,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:11:53,091 INFO L225 Difference]: With dead ends: 3896 [2018-10-24 14:11:53,091 INFO L226 Difference]: Without dead ends: 2790 [2018-10-24 14:11:53,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:11:53,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2018-10-24 14:11:53,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1945. [2018-10-24 14:11:53,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2018-10-24 14:11:53,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3412 transitions. [2018-10-24 14:11:53,245 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3412 transitions. Word has length 12 [2018-10-24 14:11:53,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:11:53,246 INFO L481 AbstractCegarLoop]: Abstraction has 1945 states and 3412 transitions. [2018-10-24 14:11:53,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:11:53,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3412 transitions. [2018-10-24 14:11:53,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-24 14:11:53,250 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:11:53,251 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:11:53,251 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:11:53,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:11:53,253 INFO L82 PathProgramCache]: Analyzing trace with hash 496408234, now seen corresponding path program 1 times [2018-10-24 14:11:53,253 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:11:53,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:11:53,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:53,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:53,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:53,896 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 14:11:54,132 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:11:54,132 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:11:54,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:11:54,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:11:54,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:11:54,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:11:54,136 INFO L87 Difference]: Start difference. First operand 1945 states and 3412 transitions. Second operand 5 states. [2018-10-24 14:12:11,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:12:11,783 INFO L93 Difference]: Finished difference Result 7061 states and 12475 transitions. [2018-10-24 14:12:11,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:12:11,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2018-10-24 14:12:11,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:12:11,810 INFO L225 Difference]: With dead ends: 7061 [2018-10-24 14:12:11,811 INFO L226 Difference]: Without dead ends: 5118 [2018-10-24 14:12:11,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:12:11,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2018-10-24 14:12:11,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5117. [2018-10-24 14:12:11,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5117 states. [2018-10-24 14:12:11,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7612 transitions. [2018-10-24 14:12:11,917 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7612 transitions. Word has length 78 [2018-10-24 14:12:11,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:12:11,917 INFO L481 AbstractCegarLoop]: Abstraction has 5117 states and 7612 transitions. [2018-10-24 14:12:11,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:12:11,918 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7612 transitions. [2018-10-24 14:12:11,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-24 14:12:11,923 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:12:11,923 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:12:11,923 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:12:11,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:12:11,924 INFO L82 PathProgramCache]: Analyzing trace with hash -268071187, now seen corresponding path program 1 times [2018-10-24 14:12:11,924 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:12:11,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:12:11,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:11,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:11,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:12,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:12:12,062 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:12:12,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:12:12,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:12:12,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:12:12,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:12:12,064 INFO L87 Difference]: Start difference. First operand 5117 states and 7612 transitions. Second operand 3 states. [2018-10-24 14:12:17,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:12:17,461 INFO L93 Difference]: Finished difference Result 10220 states and 15517 transitions. [2018-10-24 14:12:17,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:12:17,462 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2018-10-24 14:12:17,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:12:17,491 INFO L225 Difference]: With dead ends: 10220 [2018-10-24 14:12:17,491 INFO L226 Difference]: Without dead ends: 5893 [2018-10-24 14:12:17,498 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:12:17,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5893 states. [2018-10-24 14:12:17,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5893 to 5892. [2018-10-24 14:12:17,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5892 states. [2018-10-24 14:12:17,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5892 states to 5892 states and 7437 transitions. [2018-10-24 14:12:17,610 INFO L78 Accepts]: Start accepts. Automaton has 5892 states and 7437 transitions. Word has length 138 [2018-10-24 14:12:17,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:12:17,611 INFO L481 AbstractCegarLoop]: Abstraction has 5892 states and 7437 transitions. [2018-10-24 14:12:17,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:12:17,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5892 states and 7437 transitions. [2018-10-24 14:12:17,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-24 14:12:17,615 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:12:17,615 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:12:17,615 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:12:17,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:12:17,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1702259751, now seen corresponding path program 1 times [2018-10-24 14:12:17,616 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:12:17,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:12:17,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:17,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:17,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:18,044 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-24 14:12:18,045 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:12:18,045 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:12:18,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:18,147 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:12:18,258 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:12:18,285 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:12:18,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-24 14:12:18,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:12:18,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:12:18,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:12:18,287 INFO L87 Difference]: Start difference. First operand 5892 states and 7437 transitions. Second operand 5 states. [2018-10-24 14:12:36,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:12:36,845 INFO L93 Difference]: Finished difference Result 20501 states and 27031 transitions. [2018-10-24 14:12:36,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:12:36,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2018-10-24 14:12:36,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:12:36,924 INFO L225 Difference]: With dead ends: 20501 [2018-10-24 14:12:36,924 INFO L226 Difference]: Without dead ends: 15399 [2018-10-24 14:12:36,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:12:36,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15399 states. [2018-10-24 14:12:37,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15399 to 10627. [2018-10-24 14:12:37,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10627 states. [2018-10-24 14:12:37,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10627 states to 10627 states and 13141 transitions. [2018-10-24 14:12:37,194 INFO L78 Accepts]: Start accepts. Automaton has 10627 states and 13141 transitions. Word has length 177 [2018-10-24 14:12:37,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:12:37,195 INFO L481 AbstractCegarLoop]: Abstraction has 10627 states and 13141 transitions. [2018-10-24 14:12:37,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:12:37,196 INFO L276 IsEmpty]: Start isEmpty. Operand 10627 states and 13141 transitions. [2018-10-24 14:12:37,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-24 14:12:37,204 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:12:37,204 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:12:37,204 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:12:37,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:12:37,205 INFO L82 PathProgramCache]: Analyzing trace with hash -507230826, now seen corresponding path program 1 times [2018-10-24 14:12:37,205 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:12:37,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:12:37,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:37,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:37,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:37,434 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-24 14:12:37,435 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:12:37,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 14:12:37,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:12:37,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:12:37,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:12:37,436 INFO L87 Difference]: Start difference. First operand 10627 states and 13141 transitions. Second operand 3 states. [2018-10-24 14:12:44,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:12:44,076 INFO L93 Difference]: Finished difference Result 28343 states and 35767 transitions. [2018-10-24 14:12:44,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:12:44,077 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2018-10-24 14:12:44,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:12:44,113 INFO L225 Difference]: With dead ends: 28343 [2018-10-24 14:12:44,113 INFO L226 Difference]: Without dead ends: 18506 [2018-10-24 14:12:44,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:12:44,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18506 states. [2018-10-24 14:12:44,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18506 to 18505. [2018-10-24 14:12:44,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18505 states. [2018-10-24 14:12:44,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18505 states to 18505 states and 22008 transitions. [2018-10-24 14:12:44,378 INFO L78 Accepts]: Start accepts. Automaton has 18505 states and 22008 transitions. Word has length 188 [2018-10-24 14:12:44,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:12:44,379 INFO L481 AbstractCegarLoop]: Abstraction has 18505 states and 22008 transitions. [2018-10-24 14:12:44,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:12:44,379 INFO L276 IsEmpty]: Start isEmpty. Operand 18505 states and 22008 transitions. [2018-10-24 14:12:44,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-24 14:12:44,383 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:12:44,384 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:12:44,384 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:12:44,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:12:44,384 INFO L82 PathProgramCache]: Analyzing trace with hash 191537317, now seen corresponding path program 1 times [2018-10-24 14:12:44,384 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:12:44,385 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:12:44,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:44,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:44,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:44,801 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-24 14:12:44,801 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:12:44,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 14:12:44,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:12:44,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:12:44,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:12:44,803 INFO L87 Difference]: Start difference. First operand 18505 states and 22008 transitions. Second operand 5 states. [2018-10-24 14:13:01,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:13:01,660 INFO L93 Difference]: Finished difference Result 82743 states and 99665 transitions. [2018-10-24 14:13:01,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:13:01,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 226 [2018-10-24 14:13:01,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:13:01,752 INFO L225 Difference]: With dead ends: 82743 [2018-10-24 14:13:01,753 INFO L226 Difference]: Without dead ends: 63436 [2018-10-24 14:13:01,784 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:13:01,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63436 states. [2018-10-24 14:13:02,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63436 to 62622. [2018-10-24 14:13:02,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62622 states. [2018-10-24 14:13:02,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62622 states to 62622 states and 70799 transitions. [2018-10-24 14:13:02,626 INFO L78 Accepts]: Start accepts. Automaton has 62622 states and 70799 transitions. Word has length 226 [2018-10-24 14:13:02,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:13:02,627 INFO L481 AbstractCegarLoop]: Abstraction has 62622 states and 70799 transitions. [2018-10-24 14:13:02,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:13:02,627 INFO L276 IsEmpty]: Start isEmpty. Operand 62622 states and 70799 transitions. [2018-10-24 14:13:02,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-10-24 14:13:02,636 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:13:02,636 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:13:02,637 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:13:02,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:13:02,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1083857174, now seen corresponding path program 1 times [2018-10-24 14:13:02,637 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:13:02,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:13:02,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:02,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:13:02,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:02,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:13:03,337 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-24 14:13:03,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:13:03,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:13:03,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:13:03,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:13:03,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:13:03,340 INFO L87 Difference]: Start difference. First operand 62622 states and 70799 transitions. Second operand 4 states. [2018-10-24 14:13:11,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:13:11,783 INFO L93 Difference]: Finished difference Result 129949 states and 147498 transitions. [2018-10-24 14:13:11,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:13:11,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 329 [2018-10-24 14:13:11,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:13:11,863 INFO L225 Difference]: With dead ends: 129949 [2018-10-24 14:13:11,864 INFO L226 Difference]: Without dead ends: 68117 [2018-10-24 14:13:11,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:13:11,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68117 states. [2018-10-24 14:13:12,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68117 to 68116. [2018-10-24 14:13:12,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68116 states. [2018-10-24 14:13:12,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68116 states to 68116 states and 74519 transitions. [2018-10-24 14:13:12,708 INFO L78 Accepts]: Start accepts. Automaton has 68116 states and 74519 transitions. Word has length 329 [2018-10-24 14:13:12,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:13:12,709 INFO L481 AbstractCegarLoop]: Abstraction has 68116 states and 74519 transitions. [2018-10-24 14:13:12,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:13:12,709 INFO L276 IsEmpty]: Start isEmpty. Operand 68116 states and 74519 transitions. [2018-10-24 14:13:12,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2018-10-24 14:13:12,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:13:12,738 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-10-24 14:13:12,738 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:13:12,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:13:12,739 INFO L82 PathProgramCache]: Analyzing trace with hash 212774782, now seen corresponding path program 1 times [2018-10-24 14:13:12,739 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:13:12,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:13:12,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:12,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:13:12,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:13:13,648 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 496 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-10-24 14:13:13,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:13:13,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:13:13,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:13:13,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:13:13,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:13:13,650 INFO L87 Difference]: Start difference. First operand 68116 states and 74519 transitions. Second operand 5 states. [2018-10-24 14:13:30,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:13:30,708 INFO L93 Difference]: Finished difference Result 251505 states and 273949 transitions. [2018-10-24 14:13:30,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:13:30,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 557 [2018-10-24 14:13:30,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:13:30,901 INFO L225 Difference]: With dead ends: 251505 [2018-10-24 14:13:30,901 INFO L226 Difference]: Without dead ends: 184179 [2018-10-24 14:13:30,957 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 [2018-10-24 14:13:31,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184179 states. [2018-10-24 14:13:32,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184179 to 170629. [2018-10-24 14:13:32,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170629 states. [2018-10-24 14:13:32,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170629 states to 170629 states and 183745 transitions. [2018-10-24 14:13:32,632 INFO L78 Accepts]: Start accepts. Automaton has 170629 states and 183745 transitions. Word has length 557 [2018-10-24 14:13:32,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:13:32,633 INFO L481 AbstractCegarLoop]: Abstraction has 170629 states and 183745 transitions. [2018-10-24 14:13:32,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:13:32,633 INFO L276 IsEmpty]: Start isEmpty. Operand 170629 states and 183745 transitions. [2018-10-24 14:13:32,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2018-10-24 14:13:32,683 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:13:32,684 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 14:13:32,684 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:13:32,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:13:32,685 INFO L82 PathProgramCache]: Analyzing trace with hash -396182786, now seen corresponding path program 1 times [2018-10-24 14:13:32,685 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:13:32,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:13:32,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:32,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:13:32,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:13:33,128 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 14:13:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 373 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-24 14:13:33,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:13:33,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:13:33,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:13:33,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:13:33,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:13:33,505 INFO L87 Difference]: Start difference. First operand 170629 states and 183745 transitions. Second operand 4 states. [2018-10-24 14:13:43,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:13:43,492 INFO L93 Difference]: Finished difference Result 350713 states and 377543 transitions. [2018-10-24 14:13:43,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:13:43,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 598 [2018-10-24 14:13:43,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:13:43,651 INFO L225 Difference]: With dead ends: 350713 [2018-10-24 14:13:43,651 INFO L226 Difference]: Without dead ends: 163481 [2018-10-24 14:13:43,732 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:13:43,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163481 states. [2018-10-24 14:13:46,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163481 to 154812. [2018-10-24 14:13:46,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154812 states. [2018-10-24 14:13:46,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154812 states to 154812 states and 165688 transitions. [2018-10-24 14:13:46,374 INFO L78 Accepts]: Start accepts. Automaton has 154812 states and 165688 transitions. Word has length 598 [2018-10-24 14:13:46,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:13:46,375 INFO L481 AbstractCegarLoop]: Abstraction has 154812 states and 165688 transitions. [2018-10-24 14:13:46,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:13:46,375 INFO L276 IsEmpty]: Start isEmpty. Operand 154812 states and 165688 transitions. [2018-10-24 14:13:46,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2018-10-24 14:13:46,414 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:13:46,415 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 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] [2018-10-24 14:13:46,415 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:13:46,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:13:46,415 INFO L82 PathProgramCache]: Analyzing trace with hash -881230806, now seen corresponding path program 1 times [2018-10-24 14:13:46,416 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:13:46,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:13:46,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:46,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:13:46,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:13:47,206 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 776 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2018-10-24 14:13:47,206 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:13:47,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:13:47,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:13:47,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:13:47,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:13:47,208 INFO L87 Difference]: Start difference. First operand 154812 states and 165688 transitions. Second operand 4 states. [2018-10-24 14:13:57,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:13:57,118 INFO L93 Difference]: Finished difference Result 337220 states and 361057 transitions. [2018-10-24 14:13:57,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:13:57,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 647 [2018-10-24 14:13:57,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:13:57,339 INFO L225 Difference]: With dead ends: 337220 [2018-10-24 14:13:57,339 INFO L226 Difference]: Without dead ends: 181617 [2018-10-24 14:13:57,405 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:13:57,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181617 states. [2018-10-24 14:13:58,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181617 to 178431. [2018-10-24 14:13:58,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178431 states. [2018-10-24 14:13:58,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178431 states to 178431 states and 187451 transitions. [2018-10-24 14:13:58,750 INFO L78 Accepts]: Start accepts. Automaton has 178431 states and 187451 transitions. Word has length 647 [2018-10-24 14:13:58,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:13:58,750 INFO L481 AbstractCegarLoop]: Abstraction has 178431 states and 187451 transitions. [2018-10-24 14:13:58,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:13:58,751 INFO L276 IsEmpty]: Start isEmpty. Operand 178431 states and 187451 transitions. [2018-10-24 14:13:58,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2018-10-24 14:13:58,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:13:58,769 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:13:58,770 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:13:58,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:13:58,770 INFO L82 PathProgramCache]: Analyzing trace with hash -416570515, now seen corresponding path program 1 times [2018-10-24 14:13:58,770 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:13:58,771 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:13:58,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:58,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:13:58,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:14:00,512 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 646 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-10-24 14:14:00,512 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:14:00,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:14:00,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:14:00,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:14:00,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:14:00,513 INFO L87 Difference]: Start difference. First operand 178431 states and 187451 transitions. Second operand 4 states. [2018-10-24 14:14:13,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:14:13,431 INFO L93 Difference]: Finished difference Result 391612 states and 411667 transitions. [2018-10-24 14:14:13,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:14:13,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 658 [2018-10-24 14:14:13,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:14:13,634 INFO L225 Difference]: With dead ends: 391612 [2018-10-24 14:14:13,635 INFO L226 Difference]: Without dead ends: 213971 [2018-10-24 14:14:13,704 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 [2018-10-24 14:14:13,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213971 states. [2018-10-24 14:14:16,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213971 to 209167. [2018-10-24 14:14:16,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209167 states. [2018-10-24 14:14:16,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209167 states to 209167 states and 219542 transitions. [2018-10-24 14:14:16,830 INFO L78 Accepts]: Start accepts. Automaton has 209167 states and 219542 transitions. Word has length 658 [2018-10-24 14:14:16,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:14:16,831 INFO L481 AbstractCegarLoop]: Abstraction has 209167 states and 219542 transitions. [2018-10-24 14:14:16,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:14:16,831 INFO L276 IsEmpty]: Start isEmpty. Operand 209167 states and 219542 transitions. [2018-10-24 14:14:16,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2018-10-24 14:14:16,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:14:16,850 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:14:16,850 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:14:16,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:14:16,851 INFO L82 PathProgramCache]: Analyzing trace with hash 277874540, now seen corresponding path program 1 times [2018-10-24 14:14:16,851 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:14:16,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:14:16,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:16,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:14:16,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:14:17,582 WARN L179 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 14:14:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-10-24 14:14:17,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:14:17,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:14:17,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:14:17,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:14:17,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:14:17,921 INFO L87 Difference]: Start difference. First operand 209167 states and 219542 transitions. Second operand 4 states. [2018-10-24 14:14:31,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:14:31,755 INFO L93 Difference]: Finished difference Result 414415 states and 435039 transitions. [2018-10-24 14:14:31,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:14:31,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 688 [2018-10-24 14:14:31,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:14:32,024 INFO L225 Difference]: With dead ends: 414415 [2018-10-24 14:14:32,025 INFO L226 Difference]: Without dead ends: 206038 [2018-10-24 14:14:32,098 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:14:32,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206038 states. [2018-10-24 14:14:34,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206038 to 193396. [2018-10-24 14:14:34,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193396 states. [2018-10-24 14:14:34,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193396 states to 193396 states and 199876 transitions. [2018-10-24 14:14:34,536 INFO L78 Accepts]: Start accepts. Automaton has 193396 states and 199876 transitions. Word has length 688 [2018-10-24 14:14:34,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:14:34,536 INFO L481 AbstractCegarLoop]: Abstraction has 193396 states and 199876 transitions. [2018-10-24 14:14:34,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:14:34,536 INFO L276 IsEmpty]: Start isEmpty. Operand 193396 states and 199876 transitions. [2018-10-24 14:14:34,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2018-10-24 14:14:34,558 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:14:34,559 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:14:34,560 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:14:34,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:14:34,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1260312391, now seen corresponding path program 1 times [2018-10-24 14:14:34,560 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:14:34,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:14:34,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:34,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:14:34,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:14:35,368 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-10-24 14:14:36,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 484 proven. 287 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-10-24 14:14:36,567 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:14:36,567 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 [2018-10-24 14:14:36,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:14:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:14:36,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:14:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 666 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2018-10-24 14:14:37,691 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:14:37,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 14:14:37,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:14:37,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:14:37,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:14:37,694 INFO L87 Difference]: Start difference. First operand 193396 states and 199876 transitions. Second operand 7 states. [2018-10-24 14:15:13,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:15:13,691 INFO L93 Difference]: Finished difference Result 483073 states and 498533 transitions. [2018-10-24 14:15:13,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 14:15:13,691 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 791 [2018-10-24 14:15:13,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:15:13,997 INFO L225 Difference]: With dead ends: 483073 [2018-10-24 14:15:13,998 INFO L226 Difference]: Without dead ends: 288887 [2018-10-24 14:15:14,087 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 789 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2018-10-24 14:15:14,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288887 states. Received shutdown request... [2018-10-24 14:15:14,914 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:15:14,918 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:15:14,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:15:14 BoogieIcfgContainer [2018-10-24 14:15:14,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:15:14,919 INFO L168 Benchmark]: Toolchain (without parser) took 232385.46 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 14:15:14,920 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:15:14,921 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2584.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:15:14,921 INFO L168 Benchmark]: Boogie Procedure Inliner took 837.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 803.2 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. [2018-10-24 14:15:14,924 INFO L168 Benchmark]: Boogie Preprocessor took 531.04 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: 69.5 MB). Peak memory consumption was 69.5 MB. Max. memory is 7.1 GB. [2018-10-24 14:15:14,924 INFO L168 Benchmark]: RCFGBuilder took 11500.03 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 256.4 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 964.2 kB). Peak memory consumption was 601.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:15:14,926 INFO L168 Benchmark]: TraceAbstraction took 216927.70 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 3.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-24 14:15:14,935 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 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 2584.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 837.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 803.2 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 531.04 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: 69.5 MB). Peak memory consumption was 69.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11500.03 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 256.4 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 964.2 kB). Peak memory consumption was 601.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216927.70 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 3.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 45). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 216.8s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 190.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9992 SDtfs, 37550 SDslu, 3457 SDs, 0 SdLazy, 77098 SolverSat, 16991 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 150.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1028 GetRequests, 982 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=209167occurred in iteration=11, 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: 14.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 49286 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 6055 NumberOfCodeBlocks, 6055 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 6040 ConstructedInterpolants, 90 QuantifiedInterpolants, 7461361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1248 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 6222/6575 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown