java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label39_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:49:37,439 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:49:37,441 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:49:37,454 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:49:37,454 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:49:37,455 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:49:37,456 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:49:37,458 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:49:37,460 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:49:37,461 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:49:37,462 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:49:37,462 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:49:37,463 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:49:37,464 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:49:37,465 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:49:37,466 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:49:37,467 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:49:37,468 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:49:37,470 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:49:37,472 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:49:37,473 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:49:37,474 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:49:37,476 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:49:37,477 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:49:37,477 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:49:37,478 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:49:37,479 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:49:37,479 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:49:37,480 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:49:37,481 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:49:37,481 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:49:37,482 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:49:37,485 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:49:37,499 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:49:37,499 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:49:37,500 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:49:37,501 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:49:37,501 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:49:37,501 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:49:37,502 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:49:37,502 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:49:37,502 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:49:37,502 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:49:37,503 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:49:37,503 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:49:37,503 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:49:37,503 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:49:37,503 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:49:37,504 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:49:37,504 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:49:37,504 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:49:37,504 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:49:37,505 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:49:37,505 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:49:37,505 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:49:37,505 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:49:37,505 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:49:37,506 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:49:37,506 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:49:37,506 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:49:37,506 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:49:37,550 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:49:37,563 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:49:37,567 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:49:37,569 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:49:37,569 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:49:37,570 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label39_true-unreach-call.c [2018-10-24 16:49:37,629 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7c92b1c4a/fa771926d3ef48c5b8ef51cac5c01f29/FLAG1703d7f39 [2018-10-24 16:49:38,395 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:49:38,396 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label39_true-unreach-call.c [2018-10-24 16:49:38,417 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7c92b1c4a/fa771926d3ef48c5b8ef51cac5c01f29/FLAG1703d7f39 [2018-10-24 16:49:38,434 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7c92b1c4a/fa771926d3ef48c5b8ef51cac5c01f29 [2018-10-24 16:49:38,447 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:49:38,450 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:49:38,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:49:38,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:49:38,457 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:49:38,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:49:38" (1/1) ... [2018-10-24 16:49:38,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d45caf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:38, skipping insertion in model container [2018-10-24 16:49:38,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:49:38" (1/1) ... [2018-10-24 16:49:38,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:49:38,603 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:49:39,614 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:49:39,619 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:49:40,025 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:49:40,049 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:49:40,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:40 WrapperNode [2018-10-24 16:49:40,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:49:40,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:49:40,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:49:40,052 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:49:40,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:40" (1/1) ... [2018-10-24 16:49:40,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:40" (1/1) ... [2018-10-24 16:49:40,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:49:40,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:49:40,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:49:40,580 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:49:40,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:40" (1/1) ... [2018-10-24 16:49:40,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:40" (1/1) ... [2018-10-24 16:49:40,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:40" (1/1) ... [2018-10-24 16:49:40,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:40" (1/1) ... [2018-10-24 16:49:40,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:40" (1/1) ... [2018-10-24 16:49:40,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:40" (1/1) ... [2018-10-24 16:49:40,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:40" (1/1) ... [2018-10-24 16:49:40,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:49:40,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:49:40,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:49:40,864 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:49:40,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:49:40,932 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:49:40,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:49:40,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:49:50,063 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:49:50,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:49:50 BoogieIcfgContainer [2018-10-24 16:49:50,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:49:50,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:49:50,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:49:50,071 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:49:50,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:49:38" (1/3) ... [2018-10-24 16:49:50,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729813c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:49:50, skipping insertion in model container [2018-10-24 16:49:50,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:40" (2/3) ... [2018-10-24 16:49:50,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729813c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:49:50, skipping insertion in model container [2018-10-24 16:49:50,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:49:50" (3/3) ... [2018-10-24 16:49:50,079 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label39_true-unreach-call.c [2018-10-24 16:49:50,089 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:49:50,104 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:49:50,124 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:49:50,168 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:49:50,169 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:49:50,169 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:49:50,169 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:49:50,169 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:49:50,169 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:49:50,170 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:49:50,170 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:49:50,170 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:49:50,206 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-24 16:49:50,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-24 16:49:50,217 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:49:50,218 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:49:50,221 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:49:50,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:49:50,226 INFO L82 PathProgramCache]: Analyzing trace with hash -344880110, now seen corresponding path program 1 times [2018-10-24 16:49:50,228 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:49:50,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:49:50,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:49:50,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:49:50,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:49:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:49:50,769 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 16:49:50,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:49:50,793 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:49:50,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:49:50,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:49:50,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:49:50,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:49:50,818 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-24 16:50:00,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:50:00,228 INFO L93 Difference]: Finished difference Result 2085 states and 3898 transitions. [2018-10-24 16:50:00,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:50:00,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2018-10-24 16:50:00,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:50:00,277 INFO L225 Difference]: With dead ends: 2085 [2018-10-24 16:50:00,277 INFO L226 Difference]: Without dead ends: 1487 [2018-10-24 16:50:00,291 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:50:00,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2018-10-24 16:50:00,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1023. [2018-10-24 16:50:00,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-10-24 16:50:00,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1623 transitions. [2018-10-24 16:50:00,451 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1623 transitions. Word has length 64 [2018-10-24 16:50:00,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:50:00,451 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1623 transitions. [2018-10-24 16:50:00,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:50:00,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1623 transitions. [2018-10-24 16:50:00,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-24 16:50:00,461 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:50:00,462 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:50:00,462 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:50:00,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:50:00,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1331898614, now seen corresponding path program 1 times [2018-10-24 16:50:00,463 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:50:00,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:50:00,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:50:00,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:50:00,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:50:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:50:00,764 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:50:00,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:50:00,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:50:00,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:50:00,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:50:00,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:50:00,767 INFO L87 Difference]: Start difference. First operand 1023 states and 1623 transitions. Second operand 4 states. [2018-10-24 16:50:12,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:50:12,288 INFO L93 Difference]: Finished difference Result 2908 states and 4662 transitions. [2018-10-24 16:50:12,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:50:12,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2018-10-24 16:50:12,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:50:12,300 INFO L225 Difference]: With dead ends: 2908 [2018-10-24 16:50:12,300 INFO L226 Difference]: Without dead ends: 1887 [2018-10-24 16:50:12,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:50:12,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2018-10-24 16:50:12,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1887. [2018-10-24 16:50:12,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2018-10-24 16:50:12,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2573 transitions. [2018-10-24 16:50:12,347 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2573 transitions. Word has length 132 [2018-10-24 16:50:12,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:50:12,347 INFO L481 AbstractCegarLoop]: Abstraction has 1887 states and 2573 transitions. [2018-10-24 16:50:12,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:50:12,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2573 transitions. [2018-10-24 16:50:12,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-24 16:50:12,351 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:50:12,351 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:50:12,351 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:50:12,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:50:12,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1607588607, now seen corresponding path program 1 times [2018-10-24 16:50:12,352 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:50:12,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:50:12,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:50:12,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:50:12,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:50:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:50:12,761 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:50:12,761 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:50:12,761 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:50:12,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:50:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:50:12,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:50:13,180 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:50:13,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:50:13,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 16:50:13,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:50:13,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:50:13,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:50:13,225 INFO L87 Difference]: Start difference. First operand 1887 states and 2573 transitions. Second operand 6 states. [2018-10-24 16:50:33,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:50:33,208 INFO L93 Difference]: Finished difference Result 9401 states and 12735 transitions. [2018-10-24 16:50:33,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 16:50:33,210 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-10-24 16:50:33,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:50:33,238 INFO L225 Difference]: With dead ends: 9401 [2018-10-24 16:50:33,239 INFO L226 Difference]: Without dead ends: 5747 [2018-10-24 16:50:33,244 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:50:33,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5747 states. [2018-10-24 16:50:33,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5747 to 5739. [2018-10-24 16:50:33,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5739 states. [2018-10-24 16:50:33,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5739 states to 5739 states and 6856 transitions. [2018-10-24 16:50:33,344 INFO L78 Accepts]: Start accepts. Automaton has 5739 states and 6856 transitions. Word has length 135 [2018-10-24 16:50:33,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:50:33,344 INFO L481 AbstractCegarLoop]: Abstraction has 5739 states and 6856 transitions. [2018-10-24 16:50:33,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:50:33,345 INFO L276 IsEmpty]: Start isEmpty. Operand 5739 states and 6856 transitions. [2018-10-24 16:50:33,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-24 16:50:33,348 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:50:33,349 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:50:33,349 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:50:33,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:50:33,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1344223041, now seen corresponding path program 1 times [2018-10-24 16:50:33,350 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:50:33,350 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:50:33,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:50:33,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:50:33,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:50:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:50:33,555 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:50:33,555 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:50:33,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:50:33,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:50:33,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:50:33,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:50:33,557 INFO L87 Difference]: Start difference. First operand 5739 states and 6856 transitions. Second operand 3 states. [2018-10-24 16:50:36,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:50:36,924 INFO L93 Difference]: Finished difference Result 13609 states and 16657 transitions. [2018-10-24 16:50:36,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:50:36,925 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2018-10-24 16:50:36,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:50:36,958 INFO L225 Difference]: With dead ends: 13609 [2018-10-24 16:50:36,958 INFO L226 Difference]: Without dead ends: 8299 [2018-10-24 16:50:36,967 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:50:36,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8299 states. [2018-10-24 16:50:37,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8299 to 8299. [2018-10-24 16:50:37,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8299 states. [2018-10-24 16:50:37,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8299 states to 8299 states and 9697 transitions. [2018-10-24 16:50:37,105 INFO L78 Accepts]: Start accepts. Automaton has 8299 states and 9697 transitions. Word has length 214 [2018-10-24 16:50:37,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:50:37,106 INFO L481 AbstractCegarLoop]: Abstraction has 8299 states and 9697 transitions. [2018-10-24 16:50:37,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:50:37,106 INFO L276 IsEmpty]: Start isEmpty. Operand 8299 states and 9697 transitions. [2018-10-24 16:50:37,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-10-24 16:50:37,114 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:50:37,114 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:50:37,115 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:50:37,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:50:37,115 INFO L82 PathProgramCache]: Analyzing trace with hash 857329193, now seen corresponding path program 1 times [2018-10-24 16:50:37,115 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:50:37,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:50:37,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:50:37,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:50:37,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:50:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:50:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2018-10-24 16:50:37,589 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:50:37,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:50:37,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:50:37,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:50:37,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:50:37,590 INFO L87 Difference]: Start difference. First operand 8299 states and 9697 transitions. Second operand 3 states. [2018-10-24 16:50:40,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:50:40,668 INFO L93 Difference]: Finished difference Result 20427 states and 24160 transitions. [2018-10-24 16:50:40,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:50:40,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 319 [2018-10-24 16:50:40,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:50:40,715 INFO L225 Difference]: With dead ends: 20427 [2018-10-24 16:50:40,716 INFO L226 Difference]: Without dead ends: 12556 [2018-10-24 16:50:40,726 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:50:40,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12556 states. [2018-10-24 16:50:40,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12556 to 12129. [2018-10-24 16:50:40,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12129 states. [2018-10-24 16:50:40,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12129 states to 12129 states and 13784 transitions. [2018-10-24 16:50:40,928 INFO L78 Accepts]: Start accepts. Automaton has 12129 states and 13784 transitions. Word has length 319 [2018-10-24 16:50:40,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:50:40,929 INFO L481 AbstractCegarLoop]: Abstraction has 12129 states and 13784 transitions. [2018-10-24 16:50:40,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:50:40,929 INFO L276 IsEmpty]: Start isEmpty. Operand 12129 states and 13784 transitions. [2018-10-24 16:50:40,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-10-24 16:50:40,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:50:40,937 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:50:40,937 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:50:40,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:50:40,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1619990034, now seen corresponding path program 1 times [2018-10-24 16:50:40,938 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:50:40,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:50:40,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:50:40,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:50:40,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:50:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:50:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 291 proven. 83 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-10-24 16:50:41,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:50:41,544 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:50:41,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:50:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:50:41,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:50:42,202 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2018-10-24 16:50:42,239 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:50:42,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 16:50:42,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:50:42,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:50:42,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:50:42,242 INFO L87 Difference]: Start difference. First operand 12129 states and 13784 transitions. Second operand 6 states. [2018-10-24 16:51:06,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:51:06,212 INFO L93 Difference]: Finished difference Result 55428 states and 63295 transitions. [2018-10-24 16:51:06,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 16:51:06,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 337 [2018-10-24 16:51:06,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:51:06,277 INFO L225 Difference]: With dead ends: 55428 [2018-10-24 16:51:06,277 INFO L226 Difference]: Without dead ends: 36432 [2018-10-24 16:51:06,300 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:51:06,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36432 states. [2018-10-24 16:51:06,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36432 to 36407. [2018-10-24 16:51:06,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36407 states. [2018-10-24 16:51:07,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36407 states to 36407 states and 39285 transitions. [2018-10-24 16:51:07,002 INFO L78 Accepts]: Start accepts. Automaton has 36407 states and 39285 transitions. Word has length 337 [2018-10-24 16:51:07,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:51:07,002 INFO L481 AbstractCegarLoop]: Abstraction has 36407 states and 39285 transitions. [2018-10-24 16:51:07,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:51:07,003 INFO L276 IsEmpty]: Start isEmpty. Operand 36407 states and 39285 transitions. [2018-10-24 16:51:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2018-10-24 16:51:07,057 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:51:07,058 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:51:07,058 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:51:07,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:51:07,059 INFO L82 PathProgramCache]: Analyzing trace with hash 184256243, now seen corresponding path program 1 times [2018-10-24 16:51:07,062 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:51:07,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:51:07,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:51:07,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:51:07,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:51:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:51:07,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 999 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2018-10-24 16:51:07,743 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:51:07,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:51:07,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:51:07,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:51:07,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:51:07,745 INFO L87 Difference]: Start difference. First operand 36407 states and 39285 transitions. Second operand 3 states. [2018-10-24 16:51:10,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:51:10,818 INFO L93 Difference]: Finished difference Result 82182 states and 88890 transitions. [2018-10-24 16:51:10,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:51:10,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 663 [2018-10-24 16:51:10,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:51:10,890 INFO L225 Difference]: With dead ends: 82182 [2018-10-24 16:51:10,890 INFO L226 Difference]: Without dead ends: 46203 [2018-10-24 16:51:10,923 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:51:10,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46203 states. [2018-10-24 16:51:11,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46203 to 43641. [2018-10-24 16:51:11,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43641 states. [2018-10-24 16:51:11,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43641 states to 43641 states and 46942 transitions. [2018-10-24 16:51:11,788 INFO L78 Accepts]: Start accepts. Automaton has 43641 states and 46942 transitions. Word has length 663 [2018-10-24 16:51:11,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:51:11,789 INFO L481 AbstractCegarLoop]: Abstraction has 43641 states and 46942 transitions. [2018-10-24 16:51:11,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:51:11,790 INFO L276 IsEmpty]: Start isEmpty. Operand 43641 states and 46942 transitions. [2018-10-24 16:51:11,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2018-10-24 16:51:11,866 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:51:11,866 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:51:11,867 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:51:11,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:51:11,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1994359213, now seen corresponding path program 1 times [2018-10-24 16:51:11,867 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:51:11,868 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:51:11,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:51:11,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:51:11,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:51:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:51:12,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 999 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2018-10-24 16:51:12,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:51:12,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:51:12,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:51:12,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:51:12,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:51:12,572 INFO L87 Difference]: Start difference. First operand 43641 states and 46942 transitions. Second operand 3 states. [2018-10-24 16:51:15,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:51:15,794 INFO L93 Difference]: Finished difference Result 97929 states and 105345 transitions. [2018-10-24 16:51:15,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:51:15,794 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 688 [2018-10-24 16:51:15,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:51:15,855 INFO L225 Difference]: With dead ends: 97929 [2018-10-24 16:51:15,855 INFO L226 Difference]: Without dead ends: 54716 [2018-10-24 16:51:15,884 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:51:15,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54716 states. [2018-10-24 16:51:16,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54716 to 50030. [2018-10-24 16:51:16,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50030 states. [2018-10-24 16:51:16,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50030 states to 50030 states and 53600 transitions. [2018-10-24 16:51:16,920 INFO L78 Accepts]: Start accepts. Automaton has 50030 states and 53600 transitions. Word has length 688 [2018-10-24 16:51:16,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:51:16,921 INFO L481 AbstractCegarLoop]: Abstraction has 50030 states and 53600 transitions. [2018-10-24 16:51:16,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:51:16,922 INFO L276 IsEmpty]: Start isEmpty. Operand 50030 states and 53600 transitions. [2018-10-24 16:51:16,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2018-10-24 16:51:16,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:51:16,969 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:51:16,970 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:51:16,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:51:16,970 INFO L82 PathProgramCache]: Analyzing trace with hash -414628312, now seen corresponding path program 1 times [2018-10-24 16:51:16,971 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:51:16,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:51:16,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:51:16,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:51:16,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:51:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:51:18,256 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 62 proven. 615 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-24 16:51:18,256 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:51:18,256 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:51:18,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:51:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:51:18,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:51:34,964 WARN L179 SmtUtils]: Spent 16.21 s on a formula simplification. DAG size of input: 135 DAG size of output: 30 [2018-10-24 16:51:36,061 WARN L179 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2018-10-24 16:52:21,721 WARN L179 SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 89 [2018-10-24 16:52:23,219 WARN L179 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-10-24 16:52:31,676 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 491 proven. 186 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-24 16:52:31,697 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:52:31,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2018-10-24 16:52:31,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 16:52:31,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 16:52:31,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=119, Unknown=1, NotChecked=0, Total=156 [2018-10-24 16:52:31,699 INFO L87 Difference]: Start difference. First operand 50030 states and 53600 transitions. Second operand 13 states. Received shutdown request... [2018-10-24 16:53:47,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:53:47,741 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:53:47,747 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:53:47,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:53:47 BoogieIcfgContainer [2018-10-24 16:53:47,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:53:47,748 INFO L168 Benchmark]: Toolchain (without parser) took 249300.49 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -293.8 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 16:53:47,749 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:53:47,750 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1599.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:53:47,751 INFO L168 Benchmark]: Boogie Procedure Inliner took 527.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -914.6 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:53:47,755 INFO L168 Benchmark]: Boogie Preprocessor took 284.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:53:47,755 INFO L168 Benchmark]: RCFGBuilder took 9200.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 473.6 MB). Peak memory consumption was 473.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:53:47,756 INFO L168 Benchmark]: TraceAbstraction took 237682.16 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: -32.5 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 16:53:47,763 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1599.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 527.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -914.6 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 284.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9200.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 473.6 MB). Peak memory consumption was 473.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237682.16 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: -32.5 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 197]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 197). Cancelled while BasicCegarLoop was constructing difference of abstraction (50030states) and FLOYD_HOARE automaton (currently 4 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (249 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 237.5s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 154.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3680 SDtfs, 7832 SDslu, 1443 SDs, 0 SdLazy, 23680 SolverSat, 4268 SolverUnsat, 25 SolverUnknown, 0 SolverNotchecked, 145.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1244 GetRequests, 1131 SyntacticMatches, 82 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 68.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50030occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 8172 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 77.1s InterpolantComputationTime, 4490 NumberOfCodeBlocks, 4490 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 4478 ConstructedInterpolants, 464 QuantifiedInterpolants, 57960616 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1529 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 4895/5840 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown