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/Problem15_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:31:24,527 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:31:24,530 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:31:24,542 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:31:24,542 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:31:24,543 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:31:24,545 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:31:24,547 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:31:24,548 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:31:24,549 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:31:24,550 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:31:24,550 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:31:24,551 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:31:24,552 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:31:24,553 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:31:24,554 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:31:24,555 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:31:24,557 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:31:24,559 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:31:24,563 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:31:24,564 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:31:24,568 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:31:24,573 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 16:31:24,588 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:31:24,616 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:31:24,617 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:31:24,617 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:31:24,618 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:31:24,618 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:31:24,619 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:31:24,619 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:31:24,619 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:31:24,619 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:31:24,620 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:31:24,620 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:31:24,620 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:31:24,620 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:31:24,620 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:31:24,620 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:31:24,622 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:31:24,622 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:31:24,622 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:31:24,622 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:31:24,623 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:31:24,623 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:31:24,623 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:31:24,623 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:31:24,623 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:31:24,624 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:31:24,624 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:31:24,624 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:31:24,624 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:31:24,695 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:31:24,715 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:31:24,718 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:31:24,719 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:31:24,720 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:31:24,720 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label01_true-unreach-call.c [2018-10-24 16:31:24,782 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9bb609a9b/3be528c73cb9428c92c3c6222604aed9/FLAGc8459c143 [2018-10-24 16:31:25,462 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:31:25,463 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label01_true-unreach-call.c [2018-10-24 16:31:25,488 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9bb609a9b/3be528c73cb9428c92c3c6222604aed9/FLAGc8459c143 [2018-10-24 16:31:25,512 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9bb609a9b/3be528c73cb9428c92c3c6222604aed9 [2018-10-24 16:31:25,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:31:25,529 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:31:25,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:31:25,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:31:25,536 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:31:25,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:31:25" (1/1) ... [2018-10-24 16:31:25,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4aab1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:25, skipping insertion in model container [2018-10-24 16:31:25,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:31:25" (1/1) ... [2018-10-24 16:31:25,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:31:25,658 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:31:26,470 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:31:26,476 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:31:26,790 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:31:26,812 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:31:26,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:26 WrapperNode [2018-10-24 16:31:26,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:31:26,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:31:26,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:31:26,814 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:31:26,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:26" (1/1) ... [2018-10-24 16:31:26,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:26" (1/1) ... [2018-10-24 16:31:27,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:31:27,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:31:27,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:31:27,225 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:31:27,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:26" (1/1) ... [2018-10-24 16:31:27,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:26" (1/1) ... [2018-10-24 16:31:27,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:26" (1/1) ... [2018-10-24 16:31:27,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:26" (1/1) ... [2018-10-24 16:31:27,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:26" (1/1) ... [2018-10-24 16:31:27,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:26" (1/1) ... [2018-10-24 16:31:27,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:26" (1/1) ... [2018-10-24 16:31:27,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:31:27,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:31:27,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:31:27,416 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:31:27,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:31:27,488 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:31:27,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:31:27,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:31:36,112 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:31:36,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:31:36 BoogieIcfgContainer [2018-10-24 16:31:36,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:31:36,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:31:36,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:31:36,117 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:31:36,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:31:25" (1/3) ... [2018-10-24 16:31:36,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db51b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:31:36, skipping insertion in model container [2018-10-24 16:31:36,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:26" (2/3) ... [2018-10-24 16:31:36,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db51b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:31:36, skipping insertion in model container [2018-10-24 16:31:36,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:31:36" (3/3) ... [2018-10-24 16:31:36,122 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label01_true-unreach-call.c [2018-10-24 16:31:36,132 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:31:36,141 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:31:36,159 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:31:36,199 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:31:36,200 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:31:36,200 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:31:36,200 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:31:36,200 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:31:36,201 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:31:36,201 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:31:36,201 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:31:36,201 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:31:36,230 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states. [2018-10-24 16:31:36,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-24 16:31:36,240 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:31:36,241 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] [2018-10-24 16:31:36,244 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:31:36,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:31:36,249 INFO L82 PathProgramCache]: Analyzing trace with hash 147574146, now seen corresponding path program 1 times [2018-10-24 16:31:36,251 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:31:36,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:31:36,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:36,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:36,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:36,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:31:36,704 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:31:36,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:31:36,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:31:36,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:31:36,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:31:36,729 INFO L87 Difference]: Start difference. First operand 425 states. Second operand 4 states. [2018-10-24 16:31:45,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:31:45,412 INFO L93 Difference]: Finished difference Result 1474 states and 2723 transitions. [2018-10-24 16:31:45,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:31:45,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2018-10-24 16:31:45,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:31:45,445 INFO L225 Difference]: With dead ends: 1474 [2018-10-24 16:31:45,445 INFO L226 Difference]: Without dead ends: 1042 [2018-10-24 16:31:45,451 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:31:45,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2018-10-24 16:31:45,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1040. [2018-10-24 16:31:45,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2018-10-24 16:31:45,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1638 transitions. [2018-10-24 16:31:45,555 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1638 transitions. Word has length 45 [2018-10-24 16:31:45,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:31:45,556 INFO L481 AbstractCegarLoop]: Abstraction has 1040 states and 1638 transitions. [2018-10-24 16:31:45,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:31:45,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1638 transitions. [2018-10-24 16:31:45,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-24 16:31:45,561 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:31:45,561 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:31:45,562 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:31:45,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:31:45,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1552491462, now seen corresponding path program 1 times [2018-10-24 16:31:45,562 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:31:45,562 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:31:45,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:45,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:45,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:46,007 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 9 [2018-10-24 16:31:46,195 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 9 [2018-10-24 16:31:46,226 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:31:46,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:31:46,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:31:46,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:31:46,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:31:46,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:31:46,229 INFO L87 Difference]: Start difference. First operand 1040 states and 1638 transitions. Second operand 5 states. [2018-10-24 16:31:56,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:31:56,187 INFO L93 Difference]: Finished difference Result 3299 states and 5135 transitions. [2018-10-24 16:31:56,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:31:56,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2018-10-24 16:31:56,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:31:56,204 INFO L225 Difference]: With dead ends: 3299 [2018-10-24 16:31:56,204 INFO L226 Difference]: Without dead ends: 2261 [2018-10-24 16:31:56,213 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:31:56,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2018-10-24 16:31:56,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 1953. [2018-10-24 16:31:56,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1953 states. [2018-10-24 16:31:56,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 2816 transitions. [2018-10-24 16:31:56,283 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 2816 transitions. Word has length 111 [2018-10-24 16:31:56,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:31:56,284 INFO L481 AbstractCegarLoop]: Abstraction has 1953 states and 2816 transitions. [2018-10-24 16:31:56,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:31:56,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 2816 transitions. [2018-10-24 16:31:56,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-24 16:31:56,293 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:31:56,293 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:31:56,295 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:31:56,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:31:56,295 INFO L82 PathProgramCache]: Analyzing trace with hash 738123224, now seen corresponding path program 1 times [2018-10-24 16:31:56,296 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:31:56,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:31:56,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:56,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:56,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:31:56,691 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:31:56,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:31:56,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:31:56,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:31:56,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:31:56,693 INFO L87 Difference]: Start difference. First operand 1953 states and 2816 transitions. Second operand 4 states. [2018-10-24 16:32:01,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:32:01,447 INFO L93 Difference]: Finished difference Result 7212 states and 10585 transitions. [2018-10-24 16:32:01,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:32:01,449 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2018-10-24 16:32:01,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:32:01,478 INFO L225 Difference]: With dead ends: 7212 [2018-10-24 16:32:01,478 INFO L226 Difference]: Without dead ends: 5261 [2018-10-24 16:32:01,483 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:32:01,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2018-10-24 16:32:01,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5255. [2018-10-24 16:32:01,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5255 states. [2018-10-24 16:32:01,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5255 states to 5255 states and 6986 transitions. [2018-10-24 16:32:01,586 INFO L78 Accepts]: Start accepts. Automaton has 5255 states and 6986 transitions. Word has length 116 [2018-10-24 16:32:01,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:32:01,587 INFO L481 AbstractCegarLoop]: Abstraction has 5255 states and 6986 transitions. [2018-10-24 16:32:01,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:32:01,587 INFO L276 IsEmpty]: Start isEmpty. Operand 5255 states and 6986 transitions. [2018-10-24 16:32:01,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-24 16:32:01,590 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:01,590 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:32:01,590 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:01,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:01,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1052046667, now seen corresponding path program 1 times [2018-10-24 16:32:01,591 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:01,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:01,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:01,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:01,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:02,004 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:32:02,004 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:32:02,004 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:32:02,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:02,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:32:02,172 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:32:02,207 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:32:02,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2018-10-24 16:32:02,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:32:02,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:32:02,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:32:02,209 INFO L87 Difference]: Start difference. First operand 5255 states and 6986 transitions. Second operand 5 states. [2018-10-24 16:32:12,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:32:12,287 INFO L93 Difference]: Finished difference Result 17488 states and 23960 transitions. [2018-10-24 16:32:12,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:32:12,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2018-10-24 16:32:12,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:32:12,347 INFO L225 Difference]: With dead ends: 17488 [2018-10-24 16:32:12,348 INFO L226 Difference]: Without dead ends: 12235 [2018-10-24 16:32:12,358 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:32:12,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12235 states. [2018-10-24 16:32:12,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12235 to 12192. [2018-10-24 16:32:12,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12192 states. [2018-10-24 16:32:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12192 states to 12192 states and 15807 transitions. [2018-10-24 16:32:12,605 INFO L78 Accepts]: Start accepts. Automaton has 12192 states and 15807 transitions. Word has length 137 [2018-10-24 16:32:12,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:32:12,606 INFO L481 AbstractCegarLoop]: Abstraction has 12192 states and 15807 transitions. [2018-10-24 16:32:12,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:32:12,606 INFO L276 IsEmpty]: Start isEmpty. Operand 12192 states and 15807 transitions. [2018-10-24 16:32:12,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-24 16:32:12,614 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:12,615 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:32:12,616 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:12,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:12,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1769627165, now seen corresponding path program 1 times [2018-10-24 16:32:12,616 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:12,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:12,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:12,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:12,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:13,026 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 85 proven. 4 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-10-24 16:32:13,027 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:32:13,027 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:32:13,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:13,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:32:13,191 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:32:13,215 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:32:13,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:32:13,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:32:13,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:32:13,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:32:13,217 INFO L87 Difference]: Start difference. First operand 12192 states and 15807 transitions. Second operand 4 states. [2018-10-24 16:32:16,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:32:16,628 INFO L93 Difference]: Finished difference Result 38868 states and 51322 transitions. [2018-10-24 16:32:16,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:32:16,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 217 [2018-10-24 16:32:16,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:32:16,701 INFO L225 Difference]: With dead ends: 38868 [2018-10-24 16:32:16,701 INFO L226 Difference]: Without dead ends: 26978 [2018-10-24 16:32:16,716 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:32:16,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26978 states. [2018-10-24 16:32:17,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26978 to 17589. [2018-10-24 16:32:17,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17589 states. [2018-10-24 16:32:17,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17589 states to 17589 states and 21459 transitions. [2018-10-24 16:32:17,078 INFO L78 Accepts]: Start accepts. Automaton has 17589 states and 21459 transitions. Word has length 217 [2018-10-24 16:32:17,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:32:17,078 INFO L481 AbstractCegarLoop]: Abstraction has 17589 states and 21459 transitions. [2018-10-24 16:32:17,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:32:17,079 INFO L276 IsEmpty]: Start isEmpty. Operand 17589 states and 21459 transitions. [2018-10-24 16:32:17,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-10-24 16:32:17,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:17,086 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:32:17,086 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:17,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:17,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1881927018, now seen corresponding path program 1 times [2018-10-24 16:32:17,087 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:17,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:17,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:17,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:17,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:17,664 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-10-24 16:32:17,825 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-24 16:32:17,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:32:17,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:32:17,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:32:17,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:32:17,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:32:17,827 INFO L87 Difference]: Start difference. First operand 17589 states and 21459 transitions. Second operand 5 states. [2018-10-24 16:32:23,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:32:23,293 INFO L93 Difference]: Finished difference Result 36079 states and 43967 transitions. [2018-10-24 16:32:23,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:32:23,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 308 [2018-10-24 16:32:23,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:32:23,328 INFO L225 Difference]: With dead ends: 36079 [2018-10-24 16:32:23,329 INFO L226 Difference]: Without dead ends: 18792 [2018-10-24 16:32:23,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:32:23,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18792 states. [2018-10-24 16:32:23,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18792 to 18789. [2018-10-24 16:32:23,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18789 states. [2018-10-24 16:32:23,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18789 states to 18789 states and 22697 transitions. [2018-10-24 16:32:23,631 INFO L78 Accepts]: Start accepts. Automaton has 18789 states and 22697 transitions. Word has length 308 [2018-10-24 16:32:23,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:32:23,632 INFO L481 AbstractCegarLoop]: Abstraction has 18789 states and 22697 transitions. [2018-10-24 16:32:23,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:32:23,632 INFO L276 IsEmpty]: Start isEmpty. Operand 18789 states and 22697 transitions. [2018-10-24 16:32:23,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-10-24 16:32:23,645 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:23,646 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:32:23,646 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:23,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:23,647 INFO L82 PathProgramCache]: Analyzing trace with hash 45108873, now seen corresponding path program 1 times [2018-10-24 16:32:23,647 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:23,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:23,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:23,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:23,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:24,408 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-24 16:32:24,408 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:32:24,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:32:24,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:32:24,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:32:24,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:32:24,416 INFO L87 Difference]: Start difference. First operand 18789 states and 22697 transitions. Second operand 4 states. [2018-10-24 16:32:30,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:32:30,585 INFO L93 Difference]: Finished difference Result 42376 states and 51640 transitions. [2018-10-24 16:32:30,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:32:30,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 393 [2018-10-24 16:32:30,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:32:30,628 INFO L225 Difference]: With dead ends: 42376 [2018-10-24 16:32:30,629 INFO L226 Difference]: Without dead ends: 23889 [2018-10-24 16:32:30,653 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:32:30,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23889 states. [2018-10-24 16:32:30,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23889 to 21475. [2018-10-24 16:32:30,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21475 states. [2018-10-24 16:32:30,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21475 states to 21475 states and 24961 transitions. [2018-10-24 16:32:30,922 INFO L78 Accepts]: Start accepts. Automaton has 21475 states and 24961 transitions. Word has length 393 [2018-10-24 16:32:30,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:32:30,923 INFO L481 AbstractCegarLoop]: Abstraction has 21475 states and 24961 transitions. [2018-10-24 16:32:30,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:32:30,923 INFO L276 IsEmpty]: Start isEmpty. Operand 21475 states and 24961 transitions. [2018-10-24 16:32:30,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-10-24 16:32:30,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:30,937 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:32:30,937 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:30,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:30,938 INFO L82 PathProgramCache]: Analyzing trace with hash -200658910, now seen corresponding path program 1 times [2018-10-24 16:32:30,938 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:30,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:30,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:30,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:30,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:31,870 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:32:31,870 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:32:31,870 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 [2018-10-24 16:32:31,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:31,998 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:32:33,014 WARN L179 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 488 DAG size of output: 30 [2018-10-24 16:32:33,462 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:32:33,484 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:32:33,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-10-24 16:32:33,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:32:33,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:32:33,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:32:33,487 INFO L87 Difference]: Start difference. First operand 21475 states and 24961 transitions. Second operand 6 states. [2018-10-24 16:32:54,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:32:54,359 INFO L93 Difference]: Finished difference Result 52325 states and 61237 transitions. [2018-10-24 16:32:54,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 16:32:54,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 394 [2018-10-24 16:32:54,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:32:54,414 INFO L225 Difference]: With dead ends: 52325 [2018-10-24 16:32:54,414 INFO L226 Difference]: Without dead ends: 31152 [2018-10-24 16:32:54,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 392 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:32:54,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31152 states. [2018-10-24 16:32:54,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31152 to 26001. [2018-10-24 16:32:54,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26001 states. [2018-10-24 16:32:54,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26001 states to 26001 states and 30024 transitions. [2018-10-24 16:32:54,958 INFO L78 Accepts]: Start accepts. Automaton has 26001 states and 30024 transitions. Word has length 394 [2018-10-24 16:32:54,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:32:54,958 INFO L481 AbstractCegarLoop]: Abstraction has 26001 states and 30024 transitions. [2018-10-24 16:32:54,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:32:54,958 INFO L276 IsEmpty]: Start isEmpty. Operand 26001 states and 30024 transitions. [2018-10-24 16:32:54,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-10-24 16:32:54,970 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:54,971 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:32:54,971 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:54,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:54,971 INFO L82 PathProgramCache]: Analyzing trace with hash 154830339, now seen corresponding path program 1 times [2018-10-24 16:32:54,972 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:54,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:54,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:54,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:54,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:55,498 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-10-24 16:32:55,955 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 303 proven. 4 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-24 16:32:55,956 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:32:55,956 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:32:55,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:56,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:32:56,629 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 268 proven. 39 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-24 16:32:56,662 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:32:56,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2018-10-24 16:32:56,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:32:56,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:32:56,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:32:56,664 INFO L87 Difference]: Start difference. First operand 26001 states and 30024 transitions. Second operand 9 states. [2018-10-24 16:33:10,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:33:10,008 INFO L93 Difference]: Finished difference Result 60322 states and 69536 transitions. [2018-10-24 16:33:10,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 16:33:10,008 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 400 [2018-10-24 16:33:10,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:33:10,041 INFO L225 Difference]: With dead ends: 60322 [2018-10-24 16:33:10,041 INFO L226 Difference]: Without dead ends: 18707 [2018-10-24 16:33:10,060 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 397 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2018-10-24 16:33:10,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18707 states. [2018-10-24 16:33:10,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18707 to 13605. [2018-10-24 16:33:10,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13605 states. [2018-10-24 16:33:10,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13605 states to 13605 states and 14672 transitions. [2018-10-24 16:33:10,231 INFO L78 Accepts]: Start accepts. Automaton has 13605 states and 14672 transitions. Word has length 400 [2018-10-24 16:33:10,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:33:10,232 INFO L481 AbstractCegarLoop]: Abstraction has 13605 states and 14672 transitions. [2018-10-24 16:33:10,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:33:10,232 INFO L276 IsEmpty]: Start isEmpty. Operand 13605 states and 14672 transitions. [2018-10-24 16:33:10,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-10-24 16:33:10,242 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:33:10,243 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:33:10,243 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:33:10,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:33:10,243 INFO L82 PathProgramCache]: Analyzing trace with hash -975842274, now seen corresponding path program 1 times [2018-10-24 16:33:10,243 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:33:10,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:33:10,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:33:10,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:33:10,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:33:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:33:10,828 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-24 16:33:10,829 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:33:10,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:33:10,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:33:10,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:33:10,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:33:10,830 INFO L87 Difference]: Start difference. First operand 13605 states and 14672 transitions. Second operand 4 states. [2018-10-24 16:33:13,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:33:13,552 INFO L93 Difference]: Finished difference Result 27201 states and 29393 transitions. [2018-10-24 16:33:13,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:33:13,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 477 [2018-10-24 16:33:13,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:33:13,570 INFO L225 Difference]: With dead ends: 27201 [2018-10-24 16:33:13,571 INFO L226 Difference]: Without dead ends: 13898 [2018-10-24 16:33:13,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:33:13,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13898 states. [2018-10-24 16:33:13,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13898 to 13592. [2018-10-24 16:33:13,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13592 states. [2018-10-24 16:33:13,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13592 states to 13592 states and 14425 transitions. [2018-10-24 16:33:13,722 INFO L78 Accepts]: Start accepts. Automaton has 13592 states and 14425 transitions. Word has length 477 [2018-10-24 16:33:13,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:33:13,723 INFO L481 AbstractCegarLoop]: Abstraction has 13592 states and 14425 transitions. [2018-10-24 16:33:13,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:33:13,723 INFO L276 IsEmpty]: Start isEmpty. Operand 13592 states and 14425 transitions. [2018-10-24 16:33:13,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2018-10-24 16:33:13,726 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:33:13,727 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:33:13,727 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:33:13,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:33:13,727 INFO L82 PathProgramCache]: Analyzing trace with hash -2045472277, now seen corresponding path program 1 times [2018-10-24 16:33:13,728 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:33:13,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:33:13,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:33:13,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:33:13,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:33:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:33:14,522 WARN L179 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 16:33:15,042 WARN L179 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 18 [2018-10-24 16:33:15,583 WARN L179 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 18 [2018-10-24 16:33:16,276 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 240 proven. 107 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-24 16:33:16,277 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:33:16,277 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:33:16,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:33:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:33:16,426 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:33:16,702 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2018-10-24 16:33:17,355 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 240 proven. 107 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-24 16:33:17,376 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:33:17,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 3] total 11 [2018-10-24 16:33:17,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 16:33:17,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 16:33:17,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-10-24 16:33:17,378 INFO L87 Difference]: Start difference. First operand 13592 states and 14425 transitions. Second operand 12 states. [2018-10-24 16:35:00,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:35:00,798 INFO L93 Difference]: Finished difference Result 32618 states and 34573 transitions. [2018-10-24 16:35:00,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:35:00,798 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 502 [2018-10-24 16:35:00,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:35:00,817 INFO L225 Difference]: With dead ends: 32618 [2018-10-24 16:35:00,817 INFO L226 Difference]: Without dead ends: 19328 [2018-10-24 16:35:00,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 500 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-24 16:35:00,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19328 states. [2018-10-24 16:35:01,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19328 to 17200. [2018-10-24 16:35:01,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17200 states. [2018-10-24 16:35:01,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17200 states to 17200 states and 18204 transitions. [2018-10-24 16:35:01,021 INFO L78 Accepts]: Start accepts. Automaton has 17200 states and 18204 transitions. Word has length 502 [2018-10-24 16:35:01,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:35:01,022 INFO L481 AbstractCegarLoop]: Abstraction has 17200 states and 18204 transitions. [2018-10-24 16:35:01,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 16:35:01,022 INFO L276 IsEmpty]: Start isEmpty. Operand 17200 states and 18204 transitions. [2018-10-24 16:35:01,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2018-10-24 16:35:01,026 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:35:01,027 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:35:01,027 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:35:01,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:35:01,028 INFO L82 PathProgramCache]: Analyzing trace with hash 980123817, now seen corresponding path program 1 times [2018-10-24 16:35:01,028 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:35:01,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:35:01,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:01,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:35:01,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:35:01,875 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-10-24 16:35:02,109 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 5 [2018-10-24 16:35:02,394 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 86 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:35:02,394 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:35:02,394 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:35:02,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:35:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:35:02,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:35:04,415 WARN L179 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 134 DAG size of output: 22 [2018-10-24 16:35:10,978 WARN L179 SmtUtils]: Spent 6.17 s on a formula simplification that was a NOOP. DAG size: 76 [2018-10-24 16:35:36,040 WARN L179 SmtUtils]: Spent 24.74 s on a formula simplification. DAG size of input: 280 DAG size of output: 198 Received shutdown request... [2018-10-24 16:35:39,637 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 128 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:35:39,657 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:35:39,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2018-10-24 16:35:39,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 16:35:39,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 16:35:39,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=57, Unknown=0, NotChecked=0, Total=110 [2018-10-24 16:35:39,659 INFO L87 Difference]: Start difference. First operand 17200 states and 18204 transitions. Second operand 11 states. [2018-10-24 16:35:39,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 16:35:39,660 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:35:39,666 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:35:39,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:35:39 BoogieIcfgContainer [2018-10-24 16:35:39,667 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:35:39,668 INFO L168 Benchmark]: Toolchain (without parser) took 254140.66 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 349.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:35:39,669 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:35:39,670 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1283.33 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.3 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:35:39,670 INFO L168 Benchmark]: Boogie Procedure Inliner took 410.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -888.8 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:35:39,671 INFO L168 Benchmark]: Boogie Preprocessor took 190.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:35:39,672 INFO L168 Benchmark]: RCFGBuilder took 8697.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 323.7 MB). Peak memory consumption was 323.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:35:39,673 INFO L168 Benchmark]: TraceAbstraction took 243553.33 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.8 GB in the beginning and 3.5 GB in the end (delta: -1.7 GB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. [2018-10-24 16:35:39,678 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1283.33 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.3 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 410.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -888.8 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 190.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8697.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 323.7 MB). Peak memory consumption was 323.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 243553.33 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.8 GB in the beginning and 3.5 GB in the end (delta: -1.7 GB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 139]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 139). Cancelled while BasicCegarLoop was constructing difference of abstraction (17200states) and FLOYD_HOARE automaton (currently 2 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 425 locations, 1 error locations. TIMEOUT Result, 243.4s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 189.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3562 SDtfs, 12638 SDslu, 2218 SDs, 0 SdLazy, 32800 SolverSat, 4489 SolverUnsat, 49 SolverUnknown, 0 SolverNotchecked, 178.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2233 GetRequests, 2161 SyntacticMatches, 17 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 39.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26001occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 24852 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 47.5s InterpolantComputationTime, 5778 NumberOfCodeBlocks, 5778 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 5760 ConstructedInterpolants, 380 QuantifiedInterpolants, 33443224 SizeOfPredicates, 7 NumberOfNonLiveVariables, 2696 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 18 InterpolantComputations, 8 PerfectInterpolantSequences, 2565/3730 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown