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/Problem11_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:00:44,302 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:00:44,304 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:00:44,320 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:00:44,320 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:00:44,321 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:00:44,322 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:00:44,324 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:00:44,326 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:00:44,326 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:00:44,327 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:00:44,328 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:00:44,329 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:00:44,330 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:00:44,331 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:00:44,332 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:00:44,332 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:00:44,334 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:00:44,336 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:00:44,338 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:00:44,339 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:00:44,341 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:00:44,343 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:00:44,358 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 20:00:44,389 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:00:44,390 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:00:44,391 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:00:44,391 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:00:44,391 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:00:44,392 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:00:44,392 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:00:44,392 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:00:44,392 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:00:44,392 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:00:44,393 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:00:44,393 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:00:44,393 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:00:44,393 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:00:44,393 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:00:44,394 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:00:44,394 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:00:44,394 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:00:44,394 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:00:44,394 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:00:44,395 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:00:44,395 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:00:44,395 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:00:44,395 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:00:44,395 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:00:44,396 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:00:44,396 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:00:44,396 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:00:44,453 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:00:44,468 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:00:44,474 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:00:44,476 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:00:44,476 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:00:44,477 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label22_true-unreach-call.c [2018-10-23 20:00:44,546 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/55a4ae0c3/92b803360f58497a962f5709a3d1f924/FLAG2d3a2a0f4 [2018-10-23 20:00:45,206 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:00:45,207 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label22_true-unreach-call.c [2018-10-23 20:00:45,229 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/55a4ae0c3/92b803360f58497a962f5709a3d1f924/FLAG2d3a2a0f4 [2018-10-23 20:00:45,249 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/55a4ae0c3/92b803360f58497a962f5709a3d1f924 [2018-10-23 20:00:45,264 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:00:45,265 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:00:45,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:00:45,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:00:45,271 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:00:45,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:00:45" (1/1) ... [2018-10-23 20:00:45,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b49186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:45, skipping insertion in model container [2018-10-23 20:00:45,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:00:45" (1/1) ... [2018-10-23 20:00:45,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:00:45,375 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:00:45,984 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:00:45,989 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:00:46,124 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:00:46,142 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:00:46,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:46 WrapperNode [2018-10-23 20:00:46,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:00:46,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:00:46,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:00:46,144 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:00:46,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:46" (1/1) ... [2018-10-23 20:00:46,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:46" (1/1) ... [2018-10-23 20:00:46,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:00:46,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:00:46,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:00:46,425 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:00:46,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:46" (1/1) ... [2018-10-23 20:00:46,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:46" (1/1) ... [2018-10-23 20:00:46,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:46" (1/1) ... [2018-10-23 20:00:46,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:46" (1/1) ... [2018-10-23 20:00:46,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:46" (1/1) ... [2018-10-23 20:00:46,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:46" (1/1) ... [2018-10-23 20:00:46,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:46" (1/1) ... [2018-10-23 20:00:46,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:00:46,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:00:46,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:00:46,535 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:00:46,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:46" (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 20:00:46,613 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:00:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:00:46,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:00:51,403 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:00:51,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:00:51 BoogieIcfgContainer [2018-10-23 20:00:51,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:00:51,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:00:51,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:00:51,410 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:00:51,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:00:45" (1/3) ... [2018-10-23 20:00:51,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5a61cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:00:51, skipping insertion in model container [2018-10-23 20:00:51,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:00:46" (2/3) ... [2018-10-23 20:00:51,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5a61cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:00:51, skipping insertion in model container [2018-10-23 20:00:51,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:00:51" (3/3) ... [2018-10-23 20:00:51,414 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label22_true-unreach-call.c [2018-10-23 20:00:51,423 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:00:51,432 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:00:51,450 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:00:51,488 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:00:51,489 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:00:51,489 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:00:51,489 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:00:51,490 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:00:51,490 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:00:51,491 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:00:51,491 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:00:51,491 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:00:51,517 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2018-10-23 20:00:51,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-23 20:00:51,528 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:00:51,529 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] [2018-10-23 20:00:51,532 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:00:51,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:00:51,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1860758514, now seen corresponding path program 1 times [2018-10-23 20:00:51,540 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:00:51,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:00:51,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:00:51,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:00:51,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:00:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:00:52,051 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-23 20:00:52,068 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 20:00:52,070 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:00:52,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:00:52,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:00:52,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:00:52,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:00:52,096 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 4 states. [2018-10-23 20:00:55,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:00:55,394 INFO L93 Difference]: Finished difference Result 958 states and 1725 transitions. [2018-10-23 20:00:55,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:00:55,397 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-10-23 20:00:55,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:00:55,427 INFO L225 Difference]: With dead ends: 958 [2018-10-23 20:00:55,427 INFO L226 Difference]: Without dead ends: 667 [2018-10-23 20:00:55,433 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 20:00:55,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2018-10-23 20:00:55,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2018-10-23 20:00:55,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2018-10-23 20:00:55,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 983 transitions. [2018-10-23 20:00:55,524 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 983 transitions. Word has length 56 [2018-10-23 20:00:55,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:00:55,525 INFO L481 AbstractCegarLoop]: Abstraction has 667 states and 983 transitions. [2018-10-23 20:00:55,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:00:55,525 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 983 transitions. [2018-10-23 20:00:55,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-23 20:00:55,531 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:00:55,532 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, 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 20:00:55,532 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:00:55,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:00:55,533 INFO L82 PathProgramCache]: Analyzing trace with hash 414757932, now seen corresponding path program 1 times [2018-10-23 20:00:55,533 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:00:55,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:00:55,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:00:55,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:00:55,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:00:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:00:55,829 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:00:55,830 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:00:55,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:00:55,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:00:55,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:00:55,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:00:55,833 INFO L87 Difference]: Start difference. First operand 667 states and 983 transitions. Second operand 4 states. [2018-10-23 20:01:00,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:01:00,809 INFO L93 Difference]: Finished difference Result 2463 states and 3710 transitions. [2018-10-23 20:01:00,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:01:00,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2018-10-23 20:01:00,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:01:00,825 INFO L225 Difference]: With dead ends: 2463 [2018-10-23 20:01:00,825 INFO L226 Difference]: Without dead ends: 1798 [2018-10-23 20:01:00,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 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 20:01:00,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2018-10-23 20:01:00,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1595. [2018-10-23 20:01:00,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1595 states. [2018-10-23 20:01:00,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2260 transitions. [2018-10-23 20:01:00,918 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2260 transitions. Word has length 126 [2018-10-23 20:01:00,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:01:00,920 INFO L481 AbstractCegarLoop]: Abstraction has 1595 states and 2260 transitions. [2018-10-23 20:01:00,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:01:00,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2260 transitions. [2018-10-23 20:01:00,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-23 20:01:00,926 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:01:00,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:01:00,926 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:01:00,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:01:00,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1862992232, now seen corresponding path program 1 times [2018-10-23 20:01:00,928 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:01:00,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:01:00,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:00,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:01:00,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:01:01,302 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:01:01,302 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:01:01,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:01:01,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:01:01,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:01:01,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:01:01,304 INFO L87 Difference]: Start difference. First operand 1595 states and 2260 transitions. Second operand 4 states. [2018-10-23 20:01:05,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:01:05,524 INFO L93 Difference]: Finished difference Result 6177 states and 8809 transitions. [2018-10-23 20:01:05,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:01:05,524 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2018-10-23 20:01:05,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:01:05,548 INFO L225 Difference]: With dead ends: 6177 [2018-10-23 20:01:05,549 INFO L226 Difference]: Without dead ends: 4584 [2018-10-23 20:01:05,553 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 20:01:05,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4584 states. [2018-10-23 20:01:05,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4584 to 4578. [2018-10-23 20:01:05,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4578 states. [2018-10-23 20:01:05,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 5909 transitions. [2018-10-23 20:01:05,640 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 5909 transitions. Word has length 139 [2018-10-23 20:01:05,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:01:05,640 INFO L481 AbstractCegarLoop]: Abstraction has 4578 states and 5909 transitions. [2018-10-23 20:01:05,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:01:05,641 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 5909 transitions. [2018-10-23 20:01:05,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-23 20:01:05,647 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:01:05,647 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:01:05,648 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:01:05,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:01:05,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1672306407, now seen corresponding path program 1 times [2018-10-23 20:01:05,648 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:01:05,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:01:05,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:05,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:01:05,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:01:05,956 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:01:05,957 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:01:05,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:01:05,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:01:05,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:01:05,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:01:05,958 INFO L87 Difference]: Start difference. First operand 4578 states and 5909 transitions. Second operand 5 states. [2018-10-23 20:01:13,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:01:13,411 INFO L93 Difference]: Finished difference Result 16425 states and 21952 transitions. [2018-10-23 20:01:13,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:01:13,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2018-10-23 20:01:13,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:01:13,465 INFO L225 Difference]: With dead ends: 16425 [2018-10-23 20:01:13,465 INFO L226 Difference]: Without dead ends: 11849 [2018-10-23 20:01:13,473 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:01:13,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11849 states. [2018-10-23 20:01:13,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11849 to 10331. [2018-10-23 20:01:13,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10331 states. [2018-10-23 20:01:13,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10331 states to 10331 states and 13266 transitions. [2018-10-23 20:01:13,681 INFO L78 Accepts]: Start accepts. Automaton has 10331 states and 13266 transitions. Word has length 184 [2018-10-23 20:01:13,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:01:13,682 INFO L481 AbstractCegarLoop]: Abstraction has 10331 states and 13266 transitions. [2018-10-23 20:01:13,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:01:13,682 INFO L276 IsEmpty]: Start isEmpty. Operand 10331 states and 13266 transitions. [2018-10-23 20:01:13,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-23 20:01:13,696 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:01:13,696 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:01:13,697 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:01:13,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:01:13,697 INFO L82 PathProgramCache]: Analyzing trace with hash 89924629, now seen corresponding path program 1 times [2018-10-23 20:01:13,697 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:01:13,697 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:01:13,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:13,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:01:13,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:01:14,163 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-10-23 20:01:14,224 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-23 20:01:14,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:01:14,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:01:14,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:01:14,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:01:14,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:01:14,226 INFO L87 Difference]: Start difference. First operand 10331 states and 13266 transitions. Second operand 4 states. [2018-10-23 20:01:16,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:01:16,423 INFO L93 Difference]: Finished difference Result 27150 states and 35049 transitions. [2018-10-23 20:01:16,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:01:16,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 247 [2018-10-23 20:01:16,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:01:16,501 INFO L225 Difference]: With dead ends: 27150 [2018-10-23 20:01:16,501 INFO L226 Difference]: Without dead ends: 13641 [2018-10-23 20:01:16,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:01:16,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13641 states. [2018-10-23 20:01:16,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13641 to 12517. [2018-10-23 20:01:16,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12517 states. [2018-10-23 20:01:16,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12517 states to 12517 states and 15474 transitions. [2018-10-23 20:01:16,772 INFO L78 Accepts]: Start accepts. Automaton has 12517 states and 15474 transitions. Word has length 247 [2018-10-23 20:01:16,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:01:16,772 INFO L481 AbstractCegarLoop]: Abstraction has 12517 states and 15474 transitions. [2018-10-23 20:01:16,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:01:16,773 INFO L276 IsEmpty]: Start isEmpty. Operand 12517 states and 15474 transitions. [2018-10-23 20:01:16,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-10-23 20:01:16,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:01:16,786 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, 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] [2018-10-23 20:01:16,787 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:01:16,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:01:16,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1289748365, now seen corresponding path program 1 times [2018-10-23 20:01:16,787 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:01:16,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:01:16,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:16,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:01:16,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:01:17,141 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-23 20:01:17,142 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:01:17,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:01:17,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:01:17,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:01:17,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:01:17,143 INFO L87 Difference]: Start difference. First operand 12517 states and 15474 transitions. Second operand 4 states. [2018-10-23 20:01:19,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:01:19,598 INFO L93 Difference]: Finished difference Result 31529 states and 39132 transitions. [2018-10-23 20:01:19,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:01:19,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 298 [2018-10-23 20:01:19,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:01:19,638 INFO L225 Difference]: With dead ends: 31529 [2018-10-23 20:01:19,638 INFO L226 Difference]: Without dead ends: 19199 [2018-10-23 20:01:19,653 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 20:01:19,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19199 states. [2018-10-23 20:01:19,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19199 to 18806. [2018-10-23 20:01:19,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18806 states. [2018-10-23 20:01:19,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18806 states to 18806 states and 22391 transitions. [2018-10-23 20:01:19,942 INFO L78 Accepts]: Start accepts. Automaton has 18806 states and 22391 transitions. Word has length 298 [2018-10-23 20:01:19,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:01:19,943 INFO L481 AbstractCegarLoop]: Abstraction has 18806 states and 22391 transitions. [2018-10-23 20:01:19,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:01:19,943 INFO L276 IsEmpty]: Start isEmpty. Operand 18806 states and 22391 transitions. [2018-10-23 20:01:19,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-10-23 20:01:19,959 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:01:19,960 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:01:19,960 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:01:19,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:01:19,961 INFO L82 PathProgramCache]: Analyzing trace with hash -434510474, now seen corresponding path program 1 times [2018-10-23 20:01:19,961 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:01:19,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:01:19,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:19,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:01:19,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:01:20,426 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 172 proven. 5 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-10-23 20:01:20,427 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:01:20,427 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 20:01:20,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:01:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:01:20,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:01:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-23 20:01:20,756 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:01:20,756 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2018-10-23 20:01:20,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:01:20,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:01:20,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:01:20,758 INFO L87 Difference]: Start difference. First operand 18806 states and 22391 transitions. Second operand 4 states. [2018-10-23 20:01:24,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:01:24,749 INFO L93 Difference]: Finished difference Result 39292 states and 47011 transitions. [2018-10-23 20:01:24,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:01:24,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 304 [2018-10-23 20:01:24,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:01:24,807 INFO L225 Difference]: With dead ends: 39292 [2018-10-23 20:01:24,808 INFO L226 Difference]: Without dead ends: 22528 [2018-10-23 20:01:24,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 305 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 20:01:24,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22528 states. [2018-10-23 20:01:25,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22528 to 19170. [2018-10-23 20:01:25,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19170 states. [2018-10-23 20:01:25,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19170 states to 19170 states and 22445 transitions. [2018-10-23 20:01:25,329 INFO L78 Accepts]: Start accepts. Automaton has 19170 states and 22445 transitions. Word has length 304 [2018-10-23 20:01:25,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:01:25,330 INFO L481 AbstractCegarLoop]: Abstraction has 19170 states and 22445 transitions. [2018-10-23 20:01:25,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:01:25,330 INFO L276 IsEmpty]: Start isEmpty. Operand 19170 states and 22445 transitions. [2018-10-23 20:01:25,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-10-23 20:01:25,361 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:01:25,361 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:01:25,362 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:01:25,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:01:25,364 INFO L82 PathProgramCache]: Analyzing trace with hash -463266020, now seen corresponding path program 1 times [2018-10-23 20:01:25,364 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:01:25,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:01:25,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:25,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:01:25,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:01:25,955 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-23 20:01:26,094 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 107 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:01:26,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:01:26,095 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 20:01:26,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:01:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:01:26,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:01:26,494 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 107 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:01:26,531 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:01:26,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2018-10-23 20:01:26,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:01:26,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:01:26,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:01:26,536 INFO L87 Difference]: Start difference. First operand 19170 states and 22445 transitions. Second operand 5 states. [2018-10-23 20:01:31,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:01:31,309 INFO L93 Difference]: Finished difference Result 45027 states and 52908 transitions. [2018-10-23 20:01:31,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 20:01:31,309 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 360 [2018-10-23 20:01:31,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:01:31,351 INFO L225 Difference]: With dead ends: 45027 [2018-10-23 20:01:31,352 INFO L226 Difference]: Without dead ends: 27899 [2018-10-23 20:01:31,374 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:01:31,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27899 states. [2018-10-23 20:01:31,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27899 to 19910. [2018-10-23 20:01:31,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19910 states. [2018-10-23 20:01:31,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19910 states to 19910 states and 23330 transitions. [2018-10-23 20:01:31,722 INFO L78 Accepts]: Start accepts. Automaton has 19910 states and 23330 transitions. Word has length 360 [2018-10-23 20:01:31,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:01:31,723 INFO L481 AbstractCegarLoop]: Abstraction has 19910 states and 23330 transitions. [2018-10-23 20:01:31,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:01:31,723 INFO L276 IsEmpty]: Start isEmpty. Operand 19910 states and 23330 transitions. [2018-10-23 20:01:31,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-10-23 20:01:31,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:01:31,770 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:01:31,770 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:01:31,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:01:31,771 INFO L82 PathProgramCache]: Analyzing trace with hash 346379941, now seen corresponding path program 1 times [2018-10-23 20:01:31,771 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:01:31,771 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:01:31,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:31,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:01:31,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:01:32,508 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-10-23 20:01:32,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:01:32,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 20:01:32,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:01:32,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:01:32,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:01:32,510 INFO L87 Difference]: Start difference. First operand 19910 states and 23330 transitions. Second operand 3 states. [2018-10-23 20:01:34,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:01:34,444 INFO L93 Difference]: Finished difference Result 37963 states and 44540 transitions. [2018-10-23 20:01:34,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:01:34,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 426 [2018-10-23 20:01:34,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:01:34,468 INFO L225 Difference]: With dead ends: 37963 [2018-10-23 20:01:34,468 INFO L226 Difference]: Without dead ends: 19539 [2018-10-23 20:01:34,481 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:01:34,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19539 states. [2018-10-23 20:01:34,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19539 to 19539. [2018-10-23 20:01:34,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19539 states. [2018-10-23 20:01:34,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19539 states to 19539 states and 22547 transitions. [2018-10-23 20:01:34,709 INFO L78 Accepts]: Start accepts. Automaton has 19539 states and 22547 transitions. Word has length 426 [2018-10-23 20:01:34,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:01:34,710 INFO L481 AbstractCegarLoop]: Abstraction has 19539 states and 22547 transitions. [2018-10-23 20:01:34,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:01:34,710 INFO L276 IsEmpty]: Start isEmpty. Operand 19539 states and 22547 transitions. [2018-10-23 20:01:34,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2018-10-23 20:01:34,759 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:01:34,759 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:01:34,760 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:01:34,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:01:34,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1151368560, now seen corresponding path program 1 times [2018-10-23 20:01:34,760 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:01:34,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:01:34,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:34,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:01:34,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:01:35,408 WARN L179 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-23 20:01:35,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 679 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2018-10-23 20:01:35,559 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:01:35,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:01:35,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:01:35,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:01:35,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:01:35,560 INFO L87 Difference]: Start difference. First operand 19539 states and 22547 transitions. Second operand 4 states. [2018-10-23 20:01:37,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:01:37,794 INFO L93 Difference]: Finished difference Result 39644 states and 45778 transitions. [2018-10-23 20:01:37,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:01:37,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 611 [2018-10-23 20:01:37,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:01:37,820 INFO L225 Difference]: With dead ends: 39644 [2018-10-23 20:01:37,820 INFO L226 Difference]: Without dead ends: 20477 [2018-10-23 20:01:37,833 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:01:37,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20477 states. [2018-10-23 20:01:38,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20477 to 19723. [2018-10-23 20:01:38,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19723 states. [2018-10-23 20:01:38,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19723 states to 19723 states and 22122 transitions. [2018-10-23 20:01:38,057 INFO L78 Accepts]: Start accepts. Automaton has 19723 states and 22122 transitions. Word has length 611 [2018-10-23 20:01:38,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:01:38,058 INFO L481 AbstractCegarLoop]: Abstraction has 19723 states and 22122 transitions. [2018-10-23 20:01:38,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:01:38,058 INFO L276 IsEmpty]: Start isEmpty. Operand 19723 states and 22122 transitions. [2018-10-23 20:01:38,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2018-10-23 20:01:38,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:01:38,103 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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] [2018-10-23 20:01:38,103 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:01:38,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:01:38,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1317709288, now seen corresponding path program 1 times [2018-10-23 20:01:38,104 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:01:38,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:01:38,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:38,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:01:38,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:01:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 916 proven. 0 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2018-10-23 20:01:38,912 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:01:38,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:01:38,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:01:38,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:01:38,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:01:38,913 INFO L87 Difference]: Start difference. First operand 19723 states and 22122 transitions. Second operand 5 states. [2018-10-23 20:01:41,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:01:41,602 INFO L93 Difference]: Finished difference Result 46113 states and 51776 transitions. [2018-10-23 20:01:41,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:01:41,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 754 [2018-10-23 20:01:41,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:01:41,628 INFO L225 Difference]: With dead ends: 46113 [2018-10-23 20:01:41,629 INFO L226 Difference]: Without dead ends: 26762 [2018-10-23 20:01:41,640 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 20:01:41,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26762 states. [2018-10-23 20:01:41,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26762 to 26204. [2018-10-23 20:01:41,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26204 states. [2018-10-23 20:01:41,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26204 states to 26204 states and 28557 transitions. [2018-10-23 20:01:41,929 INFO L78 Accepts]: Start accepts. Automaton has 26204 states and 28557 transitions. Word has length 754 [2018-10-23 20:01:41,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:01:41,930 INFO L481 AbstractCegarLoop]: Abstraction has 26204 states and 28557 transitions. [2018-10-23 20:01:41,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:01:41,930 INFO L276 IsEmpty]: Start isEmpty. Operand 26204 states and 28557 transitions. [2018-10-23 20:01:41,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2018-10-23 20:01:41,957 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:01:41,958 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2018-10-23 20:01:41,958 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:01:41,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:01:41,959 INFO L82 PathProgramCache]: Analyzing trace with hash -246020562, now seen corresponding path program 1 times [2018-10-23 20:01:41,959 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:01:41,959 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:01:41,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:41,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:01:41,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:01:42,415 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-23 20:01:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1997 backedges. 1102 proven. 0 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2018-10-23 20:01:42,732 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:01:42,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:01:42,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:01:42,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:01:42,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:01:42,734 INFO L87 Difference]: Start difference. First operand 26204 states and 28557 transitions. Second operand 4 states. [2018-10-23 20:01:44,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:01:44,715 INFO L93 Difference]: Finished difference Result 50935 states and 55546 transitions. [2018-10-23 20:01:44,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:01:44,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 828 [2018-10-23 20:01:44,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:01:44,740 INFO L225 Difference]: With dead ends: 50935 [2018-10-23 20:01:44,741 INFO L226 Difference]: Without dead ends: 26774 [2018-10-23 20:01:44,749 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:01:44,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26774 states. [2018-10-23 20:01:45,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26774 to 25834. [2018-10-23 20:01:45,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25834 states. [2018-10-23 20:01:45,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25834 states to 25834 states and 28118 transitions. [2018-10-23 20:01:45,046 INFO L78 Accepts]: Start accepts. Automaton has 25834 states and 28118 transitions. Word has length 828 [2018-10-23 20:01:45,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:01:45,047 INFO L481 AbstractCegarLoop]: Abstraction has 25834 states and 28118 transitions. [2018-10-23 20:01:45,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:01:45,047 INFO L276 IsEmpty]: Start isEmpty. Operand 25834 states and 28118 transitions. [2018-10-23 20:01:45,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2018-10-23 20:01:45,077 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:01:45,078 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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] [2018-10-23 20:01:45,078 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:01:45,078 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:01:45,079 INFO L82 PathProgramCache]: Analyzing trace with hash 39384976, now seen corresponding path program 1 times [2018-10-23 20:01:45,079 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:01:45,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:01:45,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:45,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:01:45,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:01:46,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2023 backedges. 1128 proven. 0 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2018-10-23 20:01:46,000 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:01:46,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:01:46,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:01:46,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:01:46,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:01:46,002 INFO L87 Difference]: Start difference. First operand 25834 states and 28118 transitions. Second operand 4 states. [2018-10-23 20:01:47,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:01:47,469 INFO L93 Difference]: Finished difference Result 50188 states and 54656 transitions. [2018-10-23 20:01:47,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:01:47,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 844 [2018-10-23 20:01:47,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:01:47,491 INFO L225 Difference]: With dead ends: 50188 [2018-10-23 20:01:47,491 INFO L226 Difference]: Without dead ends: 26211 [2018-10-23 20:01:47,505 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 20:01:47,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26211 states. [2018-10-23 20:01:47,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26211 to 25278. [2018-10-23 20:01:47,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25278 states. [2018-10-23 20:01:47,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25278 states to 25278 states and 27477 transitions. [2018-10-23 20:01:47,735 INFO L78 Accepts]: Start accepts. Automaton has 25278 states and 27477 transitions. Word has length 844 [2018-10-23 20:01:47,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:01:47,736 INFO L481 AbstractCegarLoop]: Abstraction has 25278 states and 27477 transitions. [2018-10-23 20:01:47,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:01:47,736 INFO L276 IsEmpty]: Start isEmpty. Operand 25278 states and 27477 transitions. [2018-10-23 20:01:47,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2018-10-23 20:01:47,772 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:01:47,773 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:01:47,773 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:01:47,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:01:47,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1654802679, now seen corresponding path program 1 times [2018-10-23 20:01:47,774 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:01:47,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:01:47,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:47,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:01:47,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:01:48,442 WARN L179 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-23 20:01:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2459 backedges. 1718 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2018-10-23 20:01:49,075 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:01:49,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:01:49,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:01:49,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:01:49,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:01:49,077 INFO L87 Difference]: Start difference. First operand 25278 states and 27477 transitions. Second operand 4 states. [2018-10-23 20:01:51,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:01:51,293 INFO L93 Difference]: Finished difference Result 49268 states and 53596 transitions. [2018-10-23 20:01:51,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:01:51,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 888 [2018-10-23 20:01:51,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:01:51,314 INFO L225 Difference]: With dead ends: 49268 [2018-10-23 20:01:51,314 INFO L226 Difference]: Without dead ends: 24177 [2018-10-23 20:01:51,327 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 [2018-10-23 20:01:51,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24177 states. [2018-10-23 20:01:51,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24177 to 21564. [2018-10-23 20:01:51,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21564 states. [2018-10-23 20:01:51,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21564 states to 21564 states and 23182 transitions. [2018-10-23 20:01:51,501 INFO L78 Accepts]: Start accepts. Automaton has 21564 states and 23182 transitions. Word has length 888 [2018-10-23 20:01:51,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:01:51,502 INFO L481 AbstractCegarLoop]: Abstraction has 21564 states and 23182 transitions. [2018-10-23 20:01:51,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:01:51,502 INFO L276 IsEmpty]: Start isEmpty. Operand 21564 states and 23182 transitions. [2018-10-23 20:01:51,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2018-10-23 20:01:51,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:01:51,525 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 20:01:51,525 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:01:51,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:01:51,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1276705020, now seen corresponding path program 1 times [2018-10-23 20:01:51,526 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:01:51,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:01:51,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:51,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:01:51,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:01:52,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2425 backedges. 1554 proven. 0 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2018-10-23 20:01:52,482 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:01:52,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:01:52,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:01:52,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:01:52,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:01:52,483 INFO L87 Difference]: Start difference. First operand 21564 states and 23182 transitions. Second operand 4 states. [2018-10-23 20:01:54,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:01:54,290 INFO L93 Difference]: Finished difference Result 43325 states and 46568 transitions. [2018-10-23 20:01:54,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:01:54,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 904 [2018-10-23 20:01:54,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:01:54,310 INFO L225 Difference]: With dead ends: 43325 [2018-10-23 20:01:54,310 INFO L226 Difference]: Without dead ends: 22874 [2018-10-23 20:01:54,321 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 [2018-10-23 20:01:54,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22874 states. [2018-10-23 20:01:54,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22874 to 21193. [2018-10-23 20:01:54,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21193 states. [2018-10-23 20:01:54,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21193 states to 21193 states and 22712 transitions. [2018-10-23 20:01:54,486 INFO L78 Accepts]: Start accepts. Automaton has 21193 states and 22712 transitions. Word has length 904 [2018-10-23 20:01:54,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:01:54,486 INFO L481 AbstractCegarLoop]: Abstraction has 21193 states and 22712 transitions. [2018-10-23 20:01:54,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:01:54,487 INFO L276 IsEmpty]: Start isEmpty. Operand 21193 states and 22712 transitions. [2018-10-23 20:01:54,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2018-10-23 20:01:54,503 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:01:54,504 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 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 20:01:54,504 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:01:54,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:01:54,504 INFO L82 PathProgramCache]: Analyzing trace with hash 740592222, now seen corresponding path program 1 times [2018-10-23 20:01:54,505 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:01:54,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:01:54,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:54,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:01:54,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:01:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:01:55,396 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-23 20:01:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2541 backedges. 1433 proven. 220 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2018-10-23 20:01:55,961 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:01:55,961 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 20:01:56,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:01:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:01:56,378 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:02:03,148 WARN L179 SmtUtils]: Spent 6.40 s on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-23 20:02:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2541 backedges. 1639 proven. 600 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-10-23 20:02:05,738 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:02:05,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2018-10-23 20:02:05,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 20:02:05,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 20:02:05,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:02:05,740 INFO L87 Difference]: Start difference. First operand 21193 states and 22712 transitions. Second operand 9 states. Received shutdown request... [2018-10-23 20:05:00,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:05:00,842 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:05:00,847 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:05:00,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:05:00 BoogieIcfgContainer [2018-10-23 20:05:00,847 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:05:00,849 INFO L168 Benchmark]: Toolchain (without parser) took 255584.28 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.8 GB). Peak memory consumption was 775.2 MB. Max. memory is 7.1 GB. [2018-10-23 20:05:00,850 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:05:00,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 876.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-10-23 20:05:00,851 INFO L168 Benchmark]: Boogie Procedure Inliner took 280.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -842.7 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-23 20:05:00,852 INFO L168 Benchmark]: Boogie Preprocessor took 109.61 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:05:00,853 INFO L168 Benchmark]: RCFGBuilder took 4871.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 199.5 MB). Peak memory consumption was 199.5 MB. Max. memory is 7.1 GB. [2018-10-23 20:05:00,853 INFO L168 Benchmark]: TraceAbstraction took 249440.80 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 604.2 MB. Max. memory is 7.1 GB. [2018-10-23 20:05:00,858 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 876.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 280.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -842.7 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.61 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4871.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 199.5 MB). Peak memory consumption was 199.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 249440.80 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 604.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 171]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 171). Cancelled while BasicCegarLoop was constructing difference of abstraction (21193states) and FLOYD_HOARE automaton (currently 3 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (94 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 284 locations, 1 error locations. TIMEOUT Result, 249.3s OverallTime, 16 OverallIterations, 8 TraceHistogramMax, 223.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3266 SDtfs, 6066 SDslu, 1524 SDs, 0 SdLazy, 17282 SolverSat, 3816 SolverUnsat, 86 SolverUnknown, 0 SolverNotchecked, 212.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1653 GetRequests, 1609 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 12.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26204occurred 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: 3.4s AutomataMinimizationTime, 15 MinimizatonAttempts, 22070 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 16.2s InterpolantComputationTime, 9495 NumberOfCodeBlocks, 9495 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 9476 ConstructedInterpolants, 215 QuantifiedInterpolants, 21932119 SizeOfPredicates, 3 NumberOfNonLiveVariables, 2031 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 19 InterpolantComputations, 14 PerfectInterpolantSequences, 17593/18668 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown