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/loop-invgen/heapsort_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 11:56:09,504 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 11:56:09,506 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 11:56:09,519 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 11:56:09,520 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 11:56:09,524 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 11:56:09,525 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 11:56:09,528 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 11:56:09,531 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 11:56:09,532 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 11:56:09,534 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 11:56:09,534 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 11:56:09,535 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 11:56:09,536 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 11:56:09,537 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 11:56:09,538 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 11:56:09,538 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 11:56:09,540 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 11:56:09,545 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 11:56:09,547 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 11:56:09,548 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 11:56:09,551 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 11:56:09,555 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 11:56:09,563 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 11:56:09,590 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 11:56:09,590 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 11:56:09,591 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 11:56:09,593 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 11:56:09,594 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 11:56:09,594 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 11:56:09,594 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 11:56:09,594 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 11:56:09,594 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 11:56:09,595 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 11:56:09,595 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 11:56:09,596 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 11:56:09,596 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 11:56:09,596 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 11:56:09,596 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 11:56:09,597 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 11:56:09,597 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 11:56:09,597 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 11:56:09,597 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 11:56:09,597 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 11:56:09,598 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 11:56:09,599 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 11:56:09,599 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 11:56:09,599 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 11:56:09,599 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 11:56:09,599 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 11:56:09,600 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 11:56:09,600 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 11:56:09,643 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 11:56:09,656 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 11:56:09,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 11:56:09,661 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 11:56:09,661 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 11:56:09,662 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-invgen/heapsort_true-unreach-call_true-termination.i [2018-10-24 11:56:09,719 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4d14fc78b/07788d8c6e2048778b6d1c52e736579a/FLAGa95aecad5 [2018-10-24 11:56:10,131 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 11:56:10,131 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/heapsort_true-unreach-call_true-termination.i [2018-10-24 11:56:10,138 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4d14fc78b/07788d8c6e2048778b6d1c52e736579a/FLAGa95aecad5 [2018-10-24 11:56:10,159 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4d14fc78b/07788d8c6e2048778b6d1c52e736579a [2018-10-24 11:56:10,169 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 11:56:10,171 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 11:56:10,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 11:56:10,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 11:56:10,175 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 11:56:10,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:56:10" (1/1) ... [2018-10-24 11:56:10,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7904a4e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:56:10, skipping insertion in model container [2018-10-24 11:56:10,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:56:10" (1/1) ... [2018-10-24 11:56:10,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 11:56:10,212 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 11:56:10,389 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 11:56:10,393 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 11:56:10,416 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 11:56:10,432 INFO L193 MainTranslator]: Completed translation [2018-10-24 11:56:10,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:56:10 WrapperNode [2018-10-24 11:56:10,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 11:56:10,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 11:56:10,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 11:56:10,434 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 11:56:10,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:56:10" (1/1) ... [2018-10-24 11:56:10,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:56:10" (1/1) ... [2018-10-24 11:56:10,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 11:56:10,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 11:56:10,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 11:56:10,472 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 11:56:10,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:56:10" (1/1) ... [2018-10-24 11:56:10,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:56:10" (1/1) ... [2018-10-24 11:56:10,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:56:10" (1/1) ... [2018-10-24 11:56:10,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:56:10" (1/1) ... [2018-10-24 11:56:10,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:56:10" (1/1) ... [2018-10-24 11:56:10,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:56:10" (1/1) ... [2018-10-24 11:56:10,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:56:10" (1/1) ... [2018-10-24 11:56:10,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 11:56:10,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 11:56:10,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 11:56:10,500 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 11:56:10,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:56:10" (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 11:56:10,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 11:56:10,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 11:56:10,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-24 11:56:10,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-24 11:56:11,062 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 11:56:11,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:56:11 BoogieIcfgContainer [2018-10-24 11:56:11,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 11:56:11,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 11:56:11,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 11:56:11,067 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 11:56:11,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:56:10" (1/3) ... [2018-10-24 11:56:11,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632d865f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:56:11, skipping insertion in model container [2018-10-24 11:56:11,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:56:10" (2/3) ... [2018-10-24 11:56:11,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632d865f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:56:11, skipping insertion in model container [2018-10-24 11:56:11,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:56:11" (3/3) ... [2018-10-24 11:56:11,071 INFO L112 eAbstractionObserver]: Analyzing ICFG heapsort_true-unreach-call_true-termination.i [2018-10-24 11:56:11,079 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 11:56:11,087 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 11:56:11,104 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 11:56:11,140 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 11:56:11,140 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 11:56:11,140 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 11:56:11,141 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 11:56:11,141 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 11:56:11,141 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 11:56:11,141 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 11:56:11,141 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 11:56:11,141 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 11:56:11,158 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-10-24 11:56:11,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-24 11:56:11,163 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:56:11,164 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:56:11,166 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:56:11,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:56:11,172 INFO L82 PathProgramCache]: Analyzing trace with hash 201403027, now seen corresponding path program 1 times [2018-10-24 11:56:11,173 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:56:11,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:56:11,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:11,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:11,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:11,296 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 11:56:11,298 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 11:56:11,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 11:56:11,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 11:56:11,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 11:56:11,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 11:56:11,317 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2018-10-24 11:56:11,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:56:11,347 INFO L93 Difference]: Finished difference Result 78 states and 136 transitions. [2018-10-24 11:56:11,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 11:56:11,349 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-10-24 11:56:11,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:56:11,359 INFO L225 Difference]: With dead ends: 78 [2018-10-24 11:56:11,359 INFO L226 Difference]: Without dead ends: 37 [2018-10-24 11:56:11,363 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 11:56:11,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-24 11:56:11,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-24 11:56:11,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-24 11:56:11,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 56 transitions. [2018-10-24 11:56:11,423 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 56 transitions. Word has length 12 [2018-10-24 11:56:11,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:56:11,424 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 56 transitions. [2018-10-24 11:56:11,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 11:56:11,424 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 56 transitions. [2018-10-24 11:56:11,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-24 11:56:11,425 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:56:11,425 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:56:11,426 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:56:11,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:56:11,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1490239341, now seen corresponding path program 1 times [2018-10-24 11:56:11,426 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:56:11,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:56:11,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:11,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:11,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:11,738 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 11:56:11,739 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 11:56:11,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 11:56:11,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 11:56:11,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 11:56:11,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-24 11:56:11,742 INFO L87 Difference]: Start difference. First operand 37 states and 56 transitions. Second operand 6 states. [2018-10-24 11:56:12,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:56:12,422 INFO L93 Difference]: Finished difference Result 74 states and 111 transitions. [2018-10-24 11:56:12,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 11:56:12,422 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-10-24 11:56:12,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:56:12,425 INFO L225 Difference]: With dead ends: 74 [2018-10-24 11:56:12,426 INFO L226 Difference]: Without dead ends: 72 [2018-10-24 11:56:12,427 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-24 11:56:12,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-24 11:56:12,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 59. [2018-10-24 11:56:12,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-24 11:56:12,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 91 transitions. [2018-10-24 11:56:12,448 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 91 transitions. Word has length 13 [2018-10-24 11:56:12,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:56:12,449 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 91 transitions. [2018-10-24 11:56:12,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 11:56:12,449 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 91 transitions. [2018-10-24 11:56:12,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-24 11:56:12,450 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:56:12,450 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:56:12,451 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:56:12,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:56:12,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1477995240, now seen corresponding path program 1 times [2018-10-24 11:56:12,451 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:56:12,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:56:12,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:12,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:12,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:12,619 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 11:56:12,620 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 11:56:12,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 11:56:12,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 11:56:12,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 11:56:12,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-24 11:56:12,622 INFO L87 Difference]: Start difference. First operand 59 states and 91 transitions. Second operand 6 states. [2018-10-24 11:56:13,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:56:13,260 INFO L93 Difference]: Finished difference Result 118 states and 181 transitions. [2018-10-24 11:56:13,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 11:56:13,267 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-10-24 11:56:13,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:56:13,270 INFO L225 Difference]: With dead ends: 118 [2018-10-24 11:56:13,270 INFO L226 Difference]: Without dead ends: 116 [2018-10-24 11:56:13,271 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-24 11:56:13,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-10-24 11:56:13,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 109. [2018-10-24 11:56:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-24 11:56:13,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 170 transitions. [2018-10-24 11:56:13,304 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 170 transitions. Word has length 13 [2018-10-24 11:56:13,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:56:13,305 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 170 transitions. [2018-10-24 11:56:13,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 11:56:13,305 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 170 transitions. [2018-10-24 11:56:13,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-24 11:56:13,306 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:56:13,306 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:56:13,307 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:56:13,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:56:13,307 INFO L82 PathProgramCache]: Analyzing trace with hash -2057511575, now seen corresponding path program 1 times [2018-10-24 11:56:13,307 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:56:13,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:56:13,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:13,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:13,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:13,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:56:13,462 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:56:13,462 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 11:56:13,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:13,497 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:56:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:56:13,858 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:56:13,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 12 [2018-10-24 11:56:13,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 11:56:13,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 11:56:13,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-10-24 11:56:13,860 INFO L87 Difference]: Start difference. First operand 109 states and 170 transitions. Second operand 12 states. [2018-10-24 11:56:15,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:56:15,584 INFO L93 Difference]: Finished difference Result 242 states and 384 transitions. [2018-10-24 11:56:15,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 11:56:15,587 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2018-10-24 11:56:15,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:56:15,593 INFO L225 Difference]: With dead ends: 242 [2018-10-24 11:56:15,593 INFO L226 Difference]: Without dead ends: 240 [2018-10-24 11:56:15,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-10-24 11:56:15,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-10-24 11:56:15,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 199. [2018-10-24 11:56:15,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-24 11:56:15,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 320 transitions. [2018-10-24 11:56:15,655 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 320 transitions. Word has length 18 [2018-10-24 11:56:15,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:56:15,656 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 320 transitions. [2018-10-24 11:56:15,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 11:56:15,656 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 320 transitions. [2018-10-24 11:56:15,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-24 11:56:15,658 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:56:15,658 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:56:15,658 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:56:15,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:56:15,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1598314546, now seen corresponding path program 1 times [2018-10-24 11:56:15,659 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:56:15,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:56:15,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:15,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:15,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-24 11:56:15,824 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:56:15,825 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 11:56:15,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:15,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:56:15,918 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 11:56:15,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 11:56:15,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2018-10-24 11:56:15,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 11:56:15,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 11:56:15,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-10-24 11:56:15,948 INFO L87 Difference]: Start difference. First operand 199 states and 320 transitions. Second operand 9 states. [2018-10-24 11:56:16,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:56:16,737 INFO L93 Difference]: Finished difference Result 257 states and 405 transitions. [2018-10-24 11:56:16,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 11:56:16,743 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2018-10-24 11:56:16,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:56:16,747 INFO L225 Difference]: With dead ends: 257 [2018-10-24 11:56:16,747 INFO L226 Difference]: Without dead ends: 255 [2018-10-24 11:56:16,748 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-10-24 11:56:16,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-10-24 11:56:16,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 232. [2018-10-24 11:56:16,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-10-24 11:56:16,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 371 transitions. [2018-10-24 11:56:16,802 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 371 transitions. Word has length 25 [2018-10-24 11:56:16,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:56:16,803 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 371 transitions. [2018-10-24 11:56:16,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 11:56:16,803 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 371 transitions. [2018-10-24 11:56:16,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-24 11:56:16,805 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:56:16,805 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:56:16,805 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:56:16,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:56:16,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1015418930, now seen corresponding path program 1 times [2018-10-24 11:56:16,806 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:56:16,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:56:16,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:16,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:16,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:16,899 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 11:56:16,899 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:56:16,899 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 11:56:16,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:16,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:56:16,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-24 11:56:17,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 11:56:17,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2018-10-24 11:56:17,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 11:56:17,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 11:56:17,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-10-24 11:56:17,007 INFO L87 Difference]: Start difference. First operand 232 states and 371 transitions. Second operand 9 states. [2018-10-24 11:56:17,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:56:17,980 INFO L93 Difference]: Finished difference Result 314 states and 500 transitions. [2018-10-24 11:56:17,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 11:56:17,981 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-10-24 11:56:17,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:56:17,984 INFO L225 Difference]: With dead ends: 314 [2018-10-24 11:56:17,984 INFO L226 Difference]: Without dead ends: 312 [2018-10-24 11:56:17,985 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-10-24 11:56:17,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-10-24 11:56:18,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 285. [2018-10-24 11:56:18,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-10-24 11:56:18,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 460 transitions. [2018-10-24 11:56:18,033 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 460 transitions. Word has length 28 [2018-10-24 11:56:18,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:56:18,033 INFO L481 AbstractCegarLoop]: Abstraction has 285 states and 460 transitions. [2018-10-24 11:56:18,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 11:56:18,034 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 460 transitions. [2018-10-24 11:56:18,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-24 11:56:18,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:56:18,036 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:56:18,036 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:56:18,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:56:18,037 INFO L82 PathProgramCache]: Analyzing trace with hash 574596932, now seen corresponding path program 1 times [2018-10-24 11:56:18,037 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:56:18,037 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:56:18,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:18,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:18,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:18,408 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 11:56:18,408 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:56:18,408 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 11:56:18,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:18,434 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:56:18,686 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-10-24 11:56:18,817 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 11:56:18,843 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:56:18,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 15 [2018-10-24 11:56:18,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 11:56:18,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 11:56:18,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2018-10-24 11:56:18,845 INFO L87 Difference]: Start difference. First operand 285 states and 460 transitions. Second operand 15 states. [2018-10-24 11:56:20,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:56:20,311 INFO L93 Difference]: Finished difference Result 375 states and 592 transitions. [2018-10-24 11:56:20,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 11:56:20,312 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 30 [2018-10-24 11:56:20,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:56:20,316 INFO L225 Difference]: With dead ends: 375 [2018-10-24 11:56:20,316 INFO L226 Difference]: Without dead ends: 373 [2018-10-24 11:56:20,317 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-10-24 11:56:20,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-10-24 11:56:20,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 330. [2018-10-24 11:56:20,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2018-10-24 11:56:20,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 525 transitions. [2018-10-24 11:56:20,402 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 525 transitions. Word has length 30 [2018-10-24 11:56:20,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:56:20,402 INFO L481 AbstractCegarLoop]: Abstraction has 330 states and 525 transitions. [2018-10-24 11:56:20,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-24 11:56:20,403 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 525 transitions. [2018-10-24 11:56:20,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-24 11:56:20,411 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:56:20,411 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:56:20,412 INFO L424 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:56:20,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:56:20,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1875761279, now seen corresponding path program 1 times [2018-10-24 11:56:20,412 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:56:20,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:56:20,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:20,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:20,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-24 11:56:20,552 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:56:20,552 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 11:56:20,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:20,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:56:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 11:56:20,691 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 11:56:20,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 10 [2018-10-24 11:56:20,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 11:56:20,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 11:56:20,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-10-24 11:56:20,693 INFO L87 Difference]: Start difference. First operand 330 states and 525 transitions. Second operand 10 states. [2018-10-24 11:56:22,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:56:22,014 INFO L93 Difference]: Finished difference Result 344 states and 537 transitions. [2018-10-24 11:56:22,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 11:56:22,015 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2018-10-24 11:56:22,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:56:22,018 INFO L225 Difference]: With dead ends: 344 [2018-10-24 11:56:22,019 INFO L226 Difference]: Without dead ends: 342 [2018-10-24 11:56:22,019 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-10-24 11:56:22,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-10-24 11:56:22,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 338. [2018-10-24 11:56:22,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2018-10-24 11:56:22,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 531 transitions. [2018-10-24 11:56:22,060 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 531 transitions. Word has length 29 [2018-10-24 11:56:22,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:56:22,061 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 531 transitions. [2018-10-24 11:56:22,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 11:56:22,061 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 531 transitions. [2018-10-24 11:56:22,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-24 11:56:22,062 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:56:22,062 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:56:22,062 INFO L424 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:56:22,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:56:22,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1797142330, now seen corresponding path program 1 times [2018-10-24 11:56:22,063 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:56:22,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:56:22,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:22,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:22,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:22,155 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 11:56:22,156 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:56:22,156 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 11:56:22,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:22,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:56:22,483 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-24 11:56:22,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 11:56:22,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2018-10-24 11:56:22,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 11:56:22,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 11:56:22,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2018-10-24 11:56:22,514 INFO L87 Difference]: Start difference. First operand 338 states and 531 transitions. Second operand 14 states. [2018-10-24 11:56:24,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:56:24,643 INFO L93 Difference]: Finished difference Result 589 states and 953 transitions. [2018-10-24 11:56:24,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 11:56:24,646 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2018-10-24 11:56:24,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:56:24,651 INFO L225 Difference]: With dead ends: 589 [2018-10-24 11:56:24,651 INFO L226 Difference]: Without dead ends: 587 [2018-10-24 11:56:24,652 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2018-10-24 11:56:24,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2018-10-24 11:56:24,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 522. [2018-10-24 11:56:24,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-10-24 11:56:24,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 854 transitions. [2018-10-24 11:56:24,741 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 854 transitions. Word has length 30 [2018-10-24 11:56:24,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:56:24,741 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 854 transitions. [2018-10-24 11:56:24,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-24 11:56:24,741 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 854 transitions. [2018-10-24 11:56:24,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-24 11:56:24,743 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:56:24,743 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 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 11:56:24,744 INFO L424 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:56:24,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:56:24,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1506527125, now seen corresponding path program 1 times [2018-10-24 11:56:24,744 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:56:24,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:56:24,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:24,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:24,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-10-24 11:56:25,043 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:56:25,043 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:56:25,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:25,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:56:25,133 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-10-24 11:56:25,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 11:56:25,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 10 [2018-10-24 11:56:25,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 11:56:25,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 11:56:25,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-10-24 11:56:25,159 INFO L87 Difference]: Start difference. First operand 522 states and 854 transitions. Second operand 10 states. [2018-10-24 11:56:25,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:56:25,802 INFO L93 Difference]: Finished difference Result 598 states and 963 transitions. [2018-10-24 11:56:25,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 11:56:25,803 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2018-10-24 11:56:25,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:56:25,809 INFO L225 Difference]: With dead ends: 598 [2018-10-24 11:56:25,809 INFO L226 Difference]: Without dead ends: 596 [2018-10-24 11:56:25,810 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-10-24 11:56:25,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2018-10-24 11:56:25,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 526. [2018-10-24 11:56:25,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2018-10-24 11:56:25,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 857 transitions. [2018-10-24 11:56:25,891 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 857 transitions. Word has length 40 [2018-10-24 11:56:25,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:56:25,891 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 857 transitions. [2018-10-24 11:56:25,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 11:56:25,892 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 857 transitions. [2018-10-24 11:56:25,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-24 11:56:25,893 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:56:25,893 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2018-10-24 11:56:25,894 INFO L424 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:56:25,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:56:25,894 INFO L82 PathProgramCache]: Analyzing trace with hash 143072073, now seen corresponding path program 1 times [2018-10-24 11:56:25,894 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:56:25,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:56:25,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:25,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:25,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:26,511 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-24 11:56:26,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:56:26,512 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:56:26,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:26,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:56:26,674 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-24 11:56:26,694 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 11:56:26,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 10 [2018-10-24 11:56:26,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 11:56:26,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 11:56:26,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-10-24 11:56:26,696 INFO L87 Difference]: Start difference. First operand 526 states and 857 transitions. Second operand 10 states. [2018-10-24 11:56:27,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:56:27,989 INFO L93 Difference]: Finished difference Result 562 states and 909 transitions. [2018-10-24 11:56:27,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 11:56:27,990 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2018-10-24 11:56:27,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:56:27,995 INFO L225 Difference]: With dead ends: 562 [2018-10-24 11:56:27,996 INFO L226 Difference]: Without dead ends: 560 [2018-10-24 11:56:27,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-10-24 11:56:27,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2018-10-24 11:56:28,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 530. [2018-10-24 11:56:28,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-10-24 11:56:28,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 860 transitions. [2018-10-24 11:56:28,074 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 860 transitions. Word has length 41 [2018-10-24 11:56:28,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:56:28,074 INFO L481 AbstractCegarLoop]: Abstraction has 530 states and 860 transitions. [2018-10-24 11:56:28,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 11:56:28,075 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 860 transitions. [2018-10-24 11:56:28,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-24 11:56:28,077 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:56:28,077 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 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] [2018-10-24 11:56:28,077 INFO L424 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:56:28,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:56:28,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1466383919, now seen corresponding path program 1 times [2018-10-24 11:56:28,078 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:56:28,078 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:56:28,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:28,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:28,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 19 proven. 26 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-24 11:56:28,200 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:56:28,200 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:56:28,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:28,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:56:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-10-24 11:56:28,553 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 11:56:28,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-10-24 11:56:28,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 11:56:28,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 11:56:28,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-10-24 11:56:28,555 INFO L87 Difference]: Start difference. First operand 530 states and 860 transitions. Second operand 11 states. [2018-10-24 11:56:30,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:56:30,913 INFO L93 Difference]: Finished difference Result 1093 states and 1743 transitions. [2018-10-24 11:56:30,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 11:56:30,913 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2018-10-24 11:56:30,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:56:30,916 INFO L225 Difference]: With dead ends: 1093 [2018-10-24 11:56:30,916 INFO L226 Difference]: Without dead ends: 284 [2018-10-24 11:56:30,924 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2018-10-24 11:56:30,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2018-10-24 11:56:30,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 237. [2018-10-24 11:56:30,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-10-24 11:56:30,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 345 transitions. [2018-10-24 11:56:30,966 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 345 transitions. Word has length 61 [2018-10-24 11:56:30,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:56:30,967 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 345 transitions. [2018-10-24 11:56:30,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 11:56:30,967 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 345 transitions. [2018-10-24 11:56:30,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-24 11:56:30,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:56:30,969 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 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] [2018-10-24 11:56:30,969 INFO L424 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:56:30,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:56:30,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1332369968, now seen corresponding path program 1 times [2018-10-24 11:56:30,970 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:56:30,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:56:30,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:30,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:30,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:56:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 31 proven. 4 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2018-10-24 11:56:31,071 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:56:31,071 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:56:31,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:56:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:56:31,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:56:31,644 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 123 proven. 4 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-10-24 11:56:31,667 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:56:31,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 11 [2018-10-24 11:56:31,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 11:56:31,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 11:56:31,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=86, Unknown=1, NotChecked=0, Total=110 [2018-10-24 11:56:31,668 INFO L87 Difference]: Start difference. First operand 237 states and 345 transitions. Second operand 11 states. [2018-10-24 11:56:32,475 WARN L179 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2018-10-24 11:56:34,276 WARN L179 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2018-10-24 11:56:34,651 WARN L179 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2018-10-24 11:56:37,560 WARN L179 SmtUtils]: Spent 1.54 s on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 11:56:50,476 WARN L179 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2018-10-24 11:56:53,665 WARN L179 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-10-24 11:57:08,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:57:08,960 INFO L93 Difference]: Finished difference Result 483 states and 697 transitions. [2018-10-24 11:57:08,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 11:57:08,963 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2018-10-24 11:57:08,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:57:08,966 INFO L225 Difference]: With dead ends: 483 [2018-10-24 11:57:08,966 INFO L226 Difference]: Without dead ends: 298 [2018-10-24 11:57:08,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=212, Invalid=640, Unknown=18, NotChecked=0, Total=870 [2018-10-24 11:57:08,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-10-24 11:57:08,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 200. [2018-10-24 11:57:08,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-24 11:57:09,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 284 transitions. [2018-10-24 11:57:09,001 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 284 transitions. Word has length 82 [2018-10-24 11:57:09,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:57:09,001 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 284 transitions. [2018-10-24 11:57:09,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 11:57:09,001 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 284 transitions. [2018-10-24 11:57:09,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 11:57:09,003 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:57:09,003 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 11:57:09,003 INFO L424 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:57:09,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:57:09,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1408874823, now seen corresponding path program 1 times [2018-10-24 11:57:09,004 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:57:09,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:57:09,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:57:09,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:57:09,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:57:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:57:09,503 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 48 proven. 11 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2018-10-24 11:57:09,504 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:57:09,504 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:57:09,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:57:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:57:09,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:57:09,843 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 212 proven. 9 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2018-10-24 11:57:09,863 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:57:09,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2018-10-24 11:57:09,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 11:57:09,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 11:57:09,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-10-24 11:57:09,864 INFO L87 Difference]: Start difference. First operand 200 states and 284 transitions. Second operand 14 states. [2018-10-24 11:57:11,088 WARN L179 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-24 11:57:13,851 WARN L179 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2018-10-24 11:57:15,208 WARN L179 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-10-24 11:57:18,056 WARN L179 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-10-24 11:57:19,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:57:19,938 INFO L93 Difference]: Finished difference Result 502 states and 732 transitions. [2018-10-24 11:57:19,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-24 11:57:19,939 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 117 [2018-10-24 11:57:19,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:57:19,941 INFO L225 Difference]: With dead ends: 502 [2018-10-24 11:57:19,942 INFO L226 Difference]: Without dead ends: 354 [2018-10-24 11:57:19,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=202, Invalid=605, Unknown=5, NotChecked=0, Total=812 [2018-10-24 11:57:19,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-10-24 11:57:19,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 250. [2018-10-24 11:57:19,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-10-24 11:57:19,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 369 transitions. [2018-10-24 11:57:19,996 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 369 transitions. Word has length 117 [2018-10-24 11:57:19,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:57:19,996 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 369 transitions. [2018-10-24 11:57:19,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-24 11:57:19,996 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 369 transitions. [2018-10-24 11:57:19,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 11:57:19,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:57:19,998 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 11:57:19,999 INFO L424 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:57:19,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:57:19,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1842603909, now seen corresponding path program 1 times [2018-10-24 11:57:19,999 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:57:19,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:57:20,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:57:20,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:57:20,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:57:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:57:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 33 proven. 74 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-10-24 11:57:20,522 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:57:20,522 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:57:20,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:57:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:57:20,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:57:20,742 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 34 proven. 25 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2018-10-24 11:57:20,762 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:57:20,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2018-10-24 11:57:20,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 11:57:20,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 11:57:20,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2018-10-24 11:57:20,763 INFO L87 Difference]: Start difference. First operand 250 states and 369 transitions. Second operand 16 states. [2018-10-24 11:57:23,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:57:23,124 INFO L93 Difference]: Finished difference Result 426 states and 627 transitions. [2018-10-24 11:57:23,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 11:57:23,125 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 117 [2018-10-24 11:57:23,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:57:23,129 INFO L225 Difference]: With dead ends: 426 [2018-10-24 11:57:23,129 INFO L226 Difference]: Without dead ends: 424 [2018-10-24 11:57:23,130 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2018-10-24 11:57:23,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2018-10-24 11:57:23,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 337. [2018-10-24 11:57:23,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-10-24 11:57:23,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 503 transitions. [2018-10-24 11:57:23,226 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 503 transitions. Word has length 117 [2018-10-24 11:57:23,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:57:23,226 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 503 transitions. [2018-10-24 11:57:23,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-24 11:57:23,227 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 503 transitions. [2018-10-24 11:57:23,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-24 11:57:23,229 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:57:23,230 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 21, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 11:57:23,230 INFO L424 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:57:23,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:57:23,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1027473157, now seen corresponding path program 2 times [2018-10-24 11:57:23,231 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:57:23,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:57:23,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:57:23,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:57:23,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:57:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:57:23,442 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 41 proven. 92 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-10-24 11:57:23,443 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:57:23,443 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:57:23,453 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 11:57:23,505 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 11:57:23,505 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:57:23,511 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:57:23,825 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 61 proven. 12 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2018-10-24 11:57:23,845 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:57:23,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2018-10-24 11:57:23,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 11:57:23,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 11:57:23,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2018-10-24 11:57:23,847 INFO L87 Difference]: Start difference. First operand 337 states and 503 transitions. Second operand 20 states. [2018-10-24 11:57:30,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:57:30,764 INFO L93 Difference]: Finished difference Result 589 states and 875 transitions. [2018-10-24 11:57:30,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-24 11:57:30,765 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 139 [2018-10-24 11:57:30,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:57:30,765 INFO L225 Difference]: With dead ends: 589 [2018-10-24 11:57:30,765 INFO L226 Difference]: Without dead ends: 0 [2018-10-24 11:57:30,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=539, Invalid=1911, Unknown=0, NotChecked=0, Total=2450 [2018-10-24 11:57:30,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-24 11:57:30,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-24 11:57:30,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-24 11:57:30,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-24 11:57:30,770 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 139 [2018-10-24 11:57:30,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:57:30,770 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-24 11:57:30,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-24 11:57:30,770 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-24 11:57:30,770 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-24 11:57:30,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-24 11:57:30,883 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:30,908 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:30,910 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:30,934 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:30,951 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 134 [2018-10-24 11:57:31,044 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,069 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,071 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,094 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,113 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 134 [2018-10-24 11:57:31,125 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,161 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,249 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,256 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 102 [2018-10-24 11:57:31,322 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,397 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,399 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,420 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,442 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,450 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,465 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,497 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,500 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,527 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,556 WARN L179 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 171 [2018-10-24 11:57:31,602 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,728 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,739 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 123 [2018-10-24 11:57:31,879 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,881 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,919 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,934 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,941 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:31,950 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:32,001 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:32,042 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:32,047 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:32,053 WARN L179 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 182 [2018-10-24 11:57:32,202 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 164 [2018-10-24 11:57:32,246 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:32,264 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:32,266 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:32,285 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:32,538 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:32,540 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:32,674 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:32,679 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:32,682 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:33,069 WARN L179 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 209 [2018-10-24 11:57:33,114 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:33,126 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:33,127 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:33,156 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:33,235 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:33,238 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:33,243 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:33,412 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:33,423 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:33,429 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:33,435 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 11:57:33,707 WARN L179 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 213 [2018-10-24 11:57:41,191 WARN L179 SmtUtils]: Spent 7.45 s on a formula simplification. DAG size of input: 111 DAG size of output: 69 [2018-10-24 11:58:21,184 WARN L179 SmtUtils]: Spent 39.99 s on a formula simplification. DAG size of input: 132 DAG size of output: 82 [2018-10-24 11:58:23,917 WARN L179 SmtUtils]: Spent 2.73 s on a formula simplification. DAG size of input: 112 DAG size of output: 69 [2018-10-24 11:59:03,743 WARN L179 SmtUtils]: Spent 39.82 s on a formula simplification. DAG size of input: 132 DAG size of output: 82 [2018-10-24 11:59:04,037 WARN L179 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 19 [2018-10-24 11:59:07,894 WARN L179 SmtUtils]: Spent 3.86 s on a formula simplification. DAG size of input: 111 DAG size of output: 69 [2018-10-24 11:59:16,863 WARN L179 SmtUtils]: Spent 8.97 s on a formula simplification. DAG size of input: 167 DAG size of output: 94 [2018-10-24 11:59:17,383 WARN L179 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 17 [2018-10-24 11:59:24,589 WARN L179 SmtUtils]: Spent 7.20 s on a formula simplification. DAG size of input: 178 DAG size of output: 94 [2018-10-24 12:00:19,876 WARN L179 SmtUtils]: Spent 55.28 s on a formula simplification. DAG size of input: 164 DAG size of output: 104 Received shutdown request... [2018-10-24 12:00:39,612 WARN L187 SmtUtils]: Removed 16 from assertion stack [2018-10-24 12:00:39,612 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-10-24 12:00:39,613 INFO L168 Benchmark]: Toolchain (without parser) took 269443.31 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -437.3 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-24 12:00:39,614 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 12:00:39,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.70 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-24 12:00:39,615 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 12:00:39,616 INFO L168 Benchmark]: Boogie Preprocessor took 27.09 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 12:00:39,616 INFO L168 Benchmark]: RCFGBuilder took 564.04 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 725.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -761.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-10-24 12:00:39,617 INFO L168 Benchmark]: TraceAbstraction took 268548.31 ms. Allocated memory was 2.2 GB in the beginning and 2.6 GB in the end (delta: 372.2 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 313.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-24 12:00:39,621 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 261.70 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 38.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.09 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 564.04 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 725.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -761.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 268548.31 ms. Allocated memory was 2.2 GB in the beginning and 2.6 GB in the end (delta: 372.2 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 313.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 132. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown