java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 03:22:10,766 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 03:22:10,768 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 03:22:10,781 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 03:22:10,781 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 03:22:10,782 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 03:22:10,784 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 03:22:10,786 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 03:22:10,787 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 03:22:10,788 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 03:22:10,789 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 03:22:10,789 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 03:22:10,790 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 03:22:10,791 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 03:22:10,793 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 03:22:10,793 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 03:22:10,794 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 03:22:10,796 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 03:22:10,798 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 03:22:10,800 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 03:22:10,801 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 03:22:10,802 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 03:22:10,805 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-24 03:22:10,814 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-24 03:22:10,843 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 03:22:10,843 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 03:22:10,845 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 03:22:10,845 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-24 03:22:10,846 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-24 03:22:10,846 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-24 03:22:10,846 INFO L133 SettingsManager]: * Use SBE=true [2018-07-24 03:22:10,846 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 03:22:10,847 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 03:22:10,847 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 03:22:10,847 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 03:22:10,847 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 03:22:10,847 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 03:22:10,848 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 03:22:10,848 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 03:22:10,848 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 03:22:10,848 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 03:22:10,848 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 03:22:10,849 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 03:22:10,849 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 03:22:10,849 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 03:22:10,849 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 03:22:10,849 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 03:22:10,849 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-24 03:22:10,850 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 03:22:10,850 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 03:22:10,850 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 03:22:10,850 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 03:22:10,907 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 03:22:10,923 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 03:22:10,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 03:22:10,930 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 03:22:10,930 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 03:22:10,931 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label56_true-unreach-call.c [2018-07-24 03:22:11,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/638f173bd/151af139196343b2ac2b78f1b1ffc852/FLAG048137938 [2018-07-24 03:22:11,703 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 03:22:11,704 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label56_true-unreach-call.c [2018-07-24 03:22:11,734 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/638f173bd/151af139196343b2ac2b78f1b1ffc852/FLAG048137938 [2018-07-24 03:22:11,753 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/638f173bd/151af139196343b2ac2b78f1b1ffc852 [2018-07-24 03:22:11,762 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 03:22:11,764 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 03:22:11,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 03:22:11,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 03:22:11,772 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 03:22:11,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:22:11" (1/1) ... [2018-07-24 03:22:11,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3949c283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:11, skipping insertion in model container [2018-07-24 03:22:11,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:22:11" (1/1) ... [2018-07-24 03:22:12,052 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 03:22:12,775 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 03:22:12,796 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 03:22:13,230 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 03:22:13,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:13 WrapperNode [2018-07-24 03:22:13,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 03:22:13,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 03:22:13,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 03:22:13,444 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 03:22:13,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:13" (1/1) ... [2018-07-24 03:22:13,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:13" (1/1) ... [2018-07-24 03:22:13,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 03:22:13,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 03:22:13,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 03:22:13,819 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 03:22:14,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:13" (1/1) ... [2018-07-24 03:22:14,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:13" (1/1) ... [2018-07-24 03:22:14,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:13" (1/1) ... [2018-07-24 03:22:14,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:13" (1/1) ... [2018-07-24 03:22:14,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:13" (1/1) ... [2018-07-24 03:22:14,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:13" (1/1) ... [2018-07-24 03:22:14,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:13" (1/1) ... [2018-07-24 03:22:14,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 03:22:14,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 03:22:14,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 03:22:14,774 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 03:22:14,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-24 03:22:14,845 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-24 03:22:14,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 03:22:14,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 03:22:26,183 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 03:22:26,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:22:26 BoogieIcfgContainer [2018-07-24 03:22:26,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 03:22:26,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 03:22:26,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 03:22:26,192 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 03:22:26,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 03:22:11" (1/3) ... [2018-07-24 03:22:26,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe71c72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:22:26, skipping insertion in model container [2018-07-24 03:22:26,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:22:13" (2/3) ... [2018-07-24 03:22:26,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe71c72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:22:26, skipping insertion in model container [2018-07-24 03:22:26,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:22:26" (3/3) ... [2018-07-24 03:22:26,196 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label56_true-unreach-call.c [2018-07-24 03:22:26,204 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 03:22:26,214 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 03:22:26,269 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 03:22:26,270 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 03:22:26,270 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 03:22:26,270 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 03:22:26,270 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 03:22:26,271 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 03:22:26,271 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 03:22:26,271 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 03:22:26,271 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 03:22:26,320 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-07-24 03:22:26,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-07-24 03:22:26,329 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:22:26,330 INFO L353 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, 1, 1, 1] [2018-07-24 03:22:26,331 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:22:26,335 INFO L82 PathProgramCache]: Analyzing trace with hash -757100326, now seen corresponding path program 1 times [2018-07-24 03:22:26,337 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:22:26,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:22:26,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:22:26,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:22:26,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:22:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:22:26,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 03:22:26,880 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:22:26,881 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 03:22:26,886 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:22:26,903 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:22:26,904 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:22:26,907 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-07-24 03:22:41,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:22:41,215 INFO L93 Difference]: Finished difference Result 2085 states and 3898 transitions. [2018-07-24 03:22:41,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:22:41,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2018-07-24 03:22:41,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:22:41,252 INFO L225 Difference]: With dead ends: 2085 [2018-07-24 03:22:41,252 INFO L226 Difference]: Without dead ends: 1487 [2018-07-24 03:22:41,260 INFO L573 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 [2018-07-24 03:22:41,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2018-07-24 03:22:41,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1023. [2018-07-24 03:22:41,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-07-24 03:22:41,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1623 transitions. [2018-07-24 03:22:41,361 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1623 transitions. Word has length 67 [2018-07-24 03:22:41,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:22:41,362 INFO L471 AbstractCegarLoop]: Abstraction has 1023 states and 1623 transitions. [2018-07-24 03:22:41,362 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:22:41,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1623 transitions. [2018-07-24 03:22:41,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-24 03:22:41,368 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:22:41,369 INFO L353 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:22:41,369 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:22:41,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1868985281, now seen corresponding path program 1 times [2018-07-24 03:22:41,370 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:22:41,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:22:41,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:22:41,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:22:41,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:22:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:22:41,668 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 03:22:41,668 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:22:41,669 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 03:22:41,670 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:22:41,671 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:22:41,671 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:22:41,671 INFO L87 Difference]: Start difference. First operand 1023 states and 1623 transitions. Second operand 4 states. [2018-07-24 03:22:55,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:22:55,365 INFO L93 Difference]: Finished difference Result 3804 states and 6126 transitions. [2018-07-24 03:22:55,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:22:55,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2018-07-24 03:22:55,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:22:55,381 INFO L225 Difference]: With dead ends: 3804 [2018-07-24 03:22:55,382 INFO L226 Difference]: Without dead ends: 2783 [2018-07-24 03:22:55,386 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:22:55,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2018-07-24 03:22:55,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2779. [2018-07-24 03:22:55,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2779 states. [2018-07-24 03:22:55,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2779 states to 2779 states and 3902 transitions. [2018-07-24 03:22:55,450 INFO L78 Accepts]: Start accepts. Automaton has 2779 states and 3902 transitions. Word has length 135 [2018-07-24 03:22:55,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:22:55,451 INFO L471 AbstractCegarLoop]: Abstraction has 2779 states and 3902 transitions. [2018-07-24 03:22:55,451 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:22:55,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2779 states and 3902 transitions. [2018-07-24 03:22:55,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-24 03:22:55,456 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:22:55,456 INFO L353 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:22:55,456 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:22:55,457 INFO L82 PathProgramCache]: Analyzing trace with hash 371846542, now seen corresponding path program 1 times [2018-07-24 03:22:55,457 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:22:55,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:22:55,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:22:55,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:22:55,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:22:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:22:55,820 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 03:22:55,821 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:22:55,821 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-24 03:22:55,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:22:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:22:55,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:22:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 03:22:56,458 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 03:22:56,459 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-07-24 03:22:56,460 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 03:22:56,461 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 03:22:56,461 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:22:56,461 INFO L87 Difference]: Start difference. First operand 2779 states and 3902 transitions. Second operand 7 states. [2018-07-24 03:23:14,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:23:14,567 INFO L93 Difference]: Finished difference Result 12540 states and 18406 transitions. [2018-07-24 03:23:14,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 03:23:14,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2018-07-24 03:23:14,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:23:14,618 INFO L225 Difference]: With dead ends: 12540 [2018-07-24 03:23:14,618 INFO L226 Difference]: Without dead ends: 9763 [2018-07-24 03:23:14,624 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:23:14,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9763 states. [2018-07-24 03:23:14,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9763 to 8405. [2018-07-24 03:23:14,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8405 states. [2018-07-24 03:23:14,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8405 states to 8405 states and 11415 transitions. [2018-07-24 03:23:14,797 INFO L78 Accepts]: Start accepts. Automaton has 8405 states and 11415 transitions. Word has length 138 [2018-07-24 03:23:14,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:23:14,798 INFO L471 AbstractCegarLoop]: Abstraction has 8405 states and 11415 transitions. [2018-07-24 03:23:14,798 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 03:23:14,798 INFO L276 IsEmpty]: Start isEmpty. Operand 8405 states and 11415 transitions. [2018-07-24 03:23:14,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-24 03:23:14,809 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:23:14,809 INFO L353 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:23:14,810 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:23:14,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1666036026, now seen corresponding path program 1 times [2018-07-24 03:23:14,810 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:23:14,815 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:23:14,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:23:14,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:23:14,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:23:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:23:15,155 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-07-24 03:23:15,257 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 129 proven. 65 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 03:23:15,257 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:23:15,258 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-24 03:23:15,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:23:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:23:15,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:23:15,503 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-07-24 03:23:15,531 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 03:23:15,532 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-07-24 03:23:15,532 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 03:23:15,532 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 03:23:15,533 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:23:15,533 INFO L87 Difference]: Start difference. First operand 8405 states and 11415 transitions. Second operand 5 states. [2018-07-24 03:23:22,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:23:22,957 INFO L93 Difference]: Finished difference Result 29161 states and 40614 transitions. [2018-07-24 03:23:22,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 03:23:22,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 208 [2018-07-24 03:23:22,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:23:23,024 INFO L225 Difference]: With dead ends: 29161 [2018-07-24 03:23:23,025 INFO L226 Difference]: Without dead ends: 18542 [2018-07-24 03:23:23,041 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 208 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 03:23:23,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18542 states. [2018-07-24 03:23:23,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18542 to 18114. [2018-07-24 03:23:23,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18114 states. [2018-07-24 03:23:23,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18114 states to 18114 states and 20696 transitions. [2018-07-24 03:23:23,311 INFO L78 Accepts]: Start accepts. Automaton has 18114 states and 20696 transitions. Word has length 208 [2018-07-24 03:23:23,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:23:23,311 INFO L471 AbstractCegarLoop]: Abstraction has 18114 states and 20696 transitions. [2018-07-24 03:23:23,311 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 03:23:23,311 INFO L276 IsEmpty]: Start isEmpty. Operand 18114 states and 20696 transitions. [2018-07-24 03:23:23,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-07-24 03:23:23,320 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:23:23,320 INFO L353 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, 4, 4, 4, 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] [2018-07-24 03:23:23,320 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:23:23,321 INFO L82 PathProgramCache]: Analyzing trace with hash -2020649586, now seen corresponding path program 1 times [2018-07-24 03:23:23,321 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:23:23,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:23:23,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:23:23,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:23:23,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:23:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:23:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 360 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-07-24 03:23:23,721 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:23:23,721 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 03:23:23,722 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 03:23:23,722 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 03:23:23,723 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 03:23:23,723 INFO L87 Difference]: Start difference. First operand 18114 states and 20696 transitions. Second operand 3 states. [2018-07-24 03:23:27,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:23:27,714 INFO L93 Difference]: Finished difference Result 47735 states and 54852 transitions. [2018-07-24 03:23:27,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 03:23:27,714 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 319 [2018-07-24 03:23:27,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:23:27,771 INFO L225 Difference]: With dead ends: 47735 [2018-07-24 03:23:27,772 INFO L226 Difference]: Without dead ends: 26614 [2018-07-24 03:23:27,795 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 03:23:27,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26614 states. [2018-07-24 03:23:28,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26614 to 24906. [2018-07-24 03:23:28,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24906 states. [2018-07-24 03:23:28,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24906 states to 24906 states and 27819 transitions. [2018-07-24 03:23:28,135 INFO L78 Accepts]: Start accepts. Automaton has 24906 states and 27819 transitions. Word has length 319 [2018-07-24 03:23:28,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:23:28,136 INFO L471 AbstractCegarLoop]: Abstraction has 24906 states and 27819 transitions. [2018-07-24 03:23:28,136 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 03:23:28,136 INFO L276 IsEmpty]: Start isEmpty. Operand 24906 states and 27819 transitions. [2018-07-24 03:23:28,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-24 03:23:28,147 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:23:28,148 INFO L353 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, 4, 4, 4, 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, 1, 1] [2018-07-24 03:23:28,148 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:23:28,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1921910724, now seen corresponding path program 1 times [2018-07-24 03:23:28,149 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:23:28,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:23:28,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:23:28,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:23:28,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:23:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:23:28,446 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2018-07-24 03:23:28,447 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:23:28,447 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 03:23:28,447 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 03:23:28,448 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 03:23:28,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 03:23:28,448 INFO L87 Difference]: Start difference. First operand 24906 states and 27819 transitions. Second operand 3 states. [2018-07-24 03:23:32,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:23:32,827 INFO L93 Difference]: Finished difference Result 56626 states and 63298 transitions. [2018-07-24 03:23:32,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 03:23:32,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 342 [2018-07-24 03:23:32,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:23:32,874 INFO L225 Difference]: With dead ends: 56626 [2018-07-24 03:23:32,874 INFO L226 Difference]: Without dead ends: 29992 [2018-07-24 03:23:32,902 INFO L573 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 [2018-07-24 03:23:32,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29992 states. [2018-07-24 03:23:33,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29992 to 28279. [2018-07-24 03:23:33,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28279 states. [2018-07-24 03:23:33,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28279 states to 28279 states and 31496 transitions. [2018-07-24 03:23:33,425 INFO L78 Accepts]: Start accepts. Automaton has 28279 states and 31496 transitions. Word has length 342 [2018-07-24 03:23:33,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:23:33,426 INFO L471 AbstractCegarLoop]: Abstraction has 28279 states and 31496 transitions. [2018-07-24 03:23:33,426 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 03:23:33,426 INFO L276 IsEmpty]: Start isEmpty. Operand 28279 states and 31496 transitions. [2018-07-24 03:23:33,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-24 03:23:33,439 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:23:33,440 INFO L353 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:23:33,440 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:23:33,440 INFO L82 PathProgramCache]: Analyzing trace with hash -155461358, now seen corresponding path program 1 times [2018-07-24 03:23:33,440 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:23:33,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:23:33,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:23:33,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:23:33,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:23:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:23:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 129 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 03:23:33,871 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:23:33,871 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-24 03:23:33,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:23:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:23:34,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:23:34,782 WARN L169 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 03:23:35,269 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 57 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 03:23:35,289 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 03:23:35,289 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2018-07-24 03:23:35,290 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 03:23:35,291 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 03:23:35,291 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 03:23:35,291 INFO L87 Difference]: Start difference. First operand 28279 states and 31496 transitions. Second operand 8 states. [2018-07-24 03:23:53,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:23:53,302 INFO L93 Difference]: Finished difference Result 75313 states and 83855 transitions. [2018-07-24 03:23:53,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 03:23:53,303 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 358 [2018-07-24 03:23:53,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:23:53,361 INFO L225 Difference]: With dead ends: 75313 [2018-07-24 03:23:53,361 INFO L226 Difference]: Without dead ends: 46610 [2018-07-24 03:23:53,375 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 354 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-24 03:23:53,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46610 states. [2018-07-24 03:23:53,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46610 to 33397. [2018-07-24 03:23:53,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33397 states. [2018-07-24 03:23:53,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33397 states to 33397 states and 36849 transitions. [2018-07-24 03:23:53,801 INFO L78 Accepts]: Start accepts. Automaton has 33397 states and 36849 transitions. Word has length 358 [2018-07-24 03:23:53,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:23:53,802 INFO L471 AbstractCegarLoop]: Abstraction has 33397 states and 36849 transitions. [2018-07-24 03:23:53,802 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 03:23:53,802 INFO L276 IsEmpty]: Start isEmpty. Operand 33397 states and 36849 transitions. [2018-07-24 03:23:53,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2018-07-24 03:23:53,837 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:23:53,838 INFO L353 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, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:23:53,838 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:23:53,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1156551668, now seen corresponding path program 1 times [2018-07-24 03:23:53,839 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:23:53,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:23:53,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:23:53,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:23:53,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:23:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:23:54,227 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-07-24 03:23:54,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 599 proven. 0 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2018-07-24 03:23:54,366 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:23:54,366 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 03:23:54,366 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 03:23:54,367 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 03:23:54,367 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 03:23:54,367 INFO L87 Difference]: Start difference. First operand 33397 states and 36849 transitions. Second operand 3 states. [2018-07-24 03:23:58,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:23:58,161 INFO L93 Difference]: Finished difference Result 84703 states and 93255 transitions. [2018-07-24 03:23:58,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 03:23:58,161 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 587 [2018-07-24 03:23:58,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:23:58,221 INFO L225 Difference]: With dead ends: 84703 [2018-07-24 03:23:58,221 INFO L226 Difference]: Without dead ends: 51735 [2018-07-24 03:23:58,249 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 03:23:58,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51735 states. [2018-07-24 03:23:59,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51735 to 50012. [2018-07-24 03:23:59,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50012 states. [2018-07-24 03:23:59,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50012 states to 50012 states and 54920 transitions. [2018-07-24 03:23:59,432 INFO L78 Accepts]: Start accepts. Automaton has 50012 states and 54920 transitions. Word has length 587 [2018-07-24 03:23:59,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:23:59,433 INFO L471 AbstractCegarLoop]: Abstraction has 50012 states and 54920 transitions. [2018-07-24 03:23:59,433 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 03:23:59,434 INFO L276 IsEmpty]: Start isEmpty. Operand 50012 states and 54920 transitions. [2018-07-24 03:23:59,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2018-07-24 03:23:59,495 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:23:59,496 INFO L353 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, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:23:59,496 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:23:59,497 INFO L82 PathProgramCache]: Analyzing trace with hash 636389935, now seen corresponding path program 1 times [2018-07-24 03:23:59,497 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:23:59,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:23:59,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:23:59,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:23:59,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:23:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:24:00,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 936 trivial. 0 not checked. [2018-07-24 03:24:00,284 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:24:00,284 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 03:24:00,285 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 03:24:00,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 03:24:00,285 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 03:24:00,285 INFO L87 Difference]: Start difference. First operand 50012 states and 54920 transitions. Second operand 3 states. [2018-07-24 03:24:07,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:24:07,001 INFO L93 Difference]: Finished difference Result 111969 states and 122640 transitions. [2018-07-24 03:24:07,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 03:24:07,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 777 [2018-07-24 03:24:07,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:24:07,053 INFO L225 Difference]: With dead ends: 111969 [2018-07-24 03:24:07,053 INFO L226 Difference]: Without dead ends: 59824 [2018-07-24 03:24:07,084 INFO L573 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 [2018-07-24 03:24:07,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59824 states. [2018-07-24 03:24:08,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59824 to 58529. [2018-07-24 03:24:08,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58529 states. [2018-07-24 03:24:08,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58529 states to 58529 states and 63665 transitions. [2018-07-24 03:24:08,073 INFO L78 Accepts]: Start accepts. Automaton has 58529 states and 63665 transitions. Word has length 777 [2018-07-24 03:24:08,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:24:08,074 INFO L471 AbstractCegarLoop]: Abstraction has 58529 states and 63665 transitions. [2018-07-24 03:24:08,074 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 03:24:08,074 INFO L276 IsEmpty]: Start isEmpty. Operand 58529 states and 63665 transitions. [2018-07-24 03:24:08,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2018-07-24 03:24:08,115 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:24:08,116 INFO L353 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, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 03:24:08,116 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:24:08,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1132612061, now seen corresponding path program 1 times [2018-07-24 03:24:08,117 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:24:08,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:24:08,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:24:08,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:24:08,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:24:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:24:09,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 685 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2018-07-24 03:24:09,097 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:24:09,097 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-24 03:24:09,098 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 03:24:09,098 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 03:24:09,098 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 03:24:09,098 INFO L87 Difference]: Start difference. First operand 58529 states and 63665 transitions. Second operand 3 states. [2018-07-24 03:24:11,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:24:11,597 INFO L93 Difference]: Finished difference Result 111923 states and 121515 transitions. [2018-07-24 03:24:11,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 03:24:11,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 888 [2018-07-24 03:24:11,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:24:11,655 INFO L225 Difference]: With dead ends: 111923 [2018-07-24 03:24:11,655 INFO L226 Difference]: Without dead ends: 53822 [2018-07-24 03:24:11,688 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 03:24:11,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53822 states. [2018-07-24 03:24:12,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53822 to 53818. [2018-07-24 03:24:12,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53818 states. [2018-07-24 03:24:12,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53818 states to 53818 states and 58264 transitions. [2018-07-24 03:24:12,801 INFO L78 Accepts]: Start accepts. Automaton has 53818 states and 58264 transitions. Word has length 888 [2018-07-24 03:24:12,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:24:12,801 INFO L471 AbstractCegarLoop]: Abstraction has 53818 states and 58264 transitions. [2018-07-24 03:24:12,801 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 03:24:12,801 INFO L276 IsEmpty]: Start isEmpty. Operand 53818 states and 58264 transitions. [2018-07-24 03:24:12,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 941 [2018-07-24 03:24:12,840 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:24:12,840 INFO L353 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, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:24:12,841 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:24:12,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1935987820, now seen corresponding path program 1 times [2018-07-24 03:24:12,841 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:24:12,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:24:12,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:24:12,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:24:12,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:24:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:24:15,150 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 260 proven. 633 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-24 03:24:15,150 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:24:15,151 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-24 03:24:15,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:24:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:24:15,502 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:24:18,577 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 728 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-07-24 03:24:18,598 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 03:24:18,599 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-07-24 03:24:18,600 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 03:24:18,600 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 03:24:18,600 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:24:18,600 INFO L87 Difference]: Start difference. First operand 53818 states and 58264 transitions. Second operand 7 states. [2018-07-24 03:24:35,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:24:35,086 INFO L93 Difference]: Finished difference Result 124728 states and 135129 transitions. [2018-07-24 03:24:35,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 03:24:35,086 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 940 [2018-07-24 03:24:35,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:24:35,151 INFO L225 Difference]: With dead ends: 124728 [2018-07-24 03:24:35,152 INFO L226 Difference]: Without dead ends: 71337 [2018-07-24 03:24:35,175 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 954 GetRequests, 943 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-07-24 03:24:35,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71337 states. [2018-07-24 03:24:35,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71337 to 63635. [2018-07-24 03:24:35,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63635 states. [2018-07-24 03:24:35,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63635 states to 63635 states and 68412 transitions. [2018-07-24 03:24:35,791 INFO L78 Accepts]: Start accepts. Automaton has 63635 states and 68412 transitions. Word has length 940 [2018-07-24 03:24:35,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:24:35,792 INFO L471 AbstractCegarLoop]: Abstraction has 63635 states and 68412 transitions. [2018-07-24 03:24:35,793 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 03:24:35,793 INFO L276 IsEmpty]: Start isEmpty. Operand 63635 states and 68412 transitions. [2018-07-24 03:24:35,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2018-07-24 03:24:35,837 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:24:35,838 INFO L353 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, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 03:24:35,838 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:24:35,838 INFO L82 PathProgramCache]: Analyzing trace with hash -789940179, now seen corresponding path program 1 times [2018-07-24 03:24:35,839 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:24:35,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:24:35,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:24:35,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:24:35,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:24:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:24:37,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1387 backedges. 1155 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2018-07-24 03:24:37,078 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:24:37,078 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 03:24:37,079 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 03:24:37,080 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 03:24:37,080 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:24:37,080 INFO L87 Difference]: Start difference. First operand 63635 states and 68412 transitions. Second operand 5 states. [2018-07-24 03:24:46,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:24:46,980 INFO L93 Difference]: Finished difference Result 154157 states and 166235 transitions. [2018-07-24 03:24:46,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 03:24:46,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 952 [2018-07-24 03:24:46,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:24:47,072 INFO L225 Difference]: With dead ends: 154157 [2018-07-24 03:24:47,072 INFO L226 Difference]: Without dead ends: 94793 [2018-07-24 03:24:47,107 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:24:47,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94793 states. [2018-07-24 03:24:47,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94793 to 81998. [2018-07-24 03:24:47,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81998 states. [2018-07-24 03:24:47,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81998 states to 81998 states and 87820 transitions. [2018-07-24 03:24:47,911 INFO L78 Accepts]: Start accepts. Automaton has 81998 states and 87820 transitions. Word has length 952 [2018-07-24 03:24:47,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:24:47,912 INFO L471 AbstractCegarLoop]: Abstraction has 81998 states and 87820 transitions. [2018-07-24 03:24:47,912 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 03:24:47,912 INFO L276 IsEmpty]: Start isEmpty. Operand 81998 states and 87820 transitions. [2018-07-24 03:24:47,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 954 [2018-07-24 03:24:47,954 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:24:47,954 INFO L353 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, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 03:24:47,955 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:24:47,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1487842839, now seen corresponding path program 1 times [2018-07-24 03:24:47,955 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:24:47,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:24:47,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:24:47,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:24:47,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:24:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:24:49,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 627 proven. 695 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-24 03:24:49,804 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:24:49,805 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-24 03:24:49,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:24:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:24:50,124 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:24:58,874 WARN L169 SmtUtils]: Spent 8.62 s on a formula simplification. DAG size of input: 120 DAG size of output: 19 [2018-07-24 03:25:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 855 proven. 302 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-07-24 03:25:01,045 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 03:25:01,046 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2018-07-24 03:25:01,047 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 03:25:01,048 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 03:25:01,048 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-07-24 03:25:01,048 INFO L87 Difference]: Start difference. First operand 81998 states and 87820 transitions. Second operand 9 states. Received shutdown request... [2018-07-24 03:26:15,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 03:26:15,564 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 03:26:15,570 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 03:26:15,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 03:26:15 BoogieIcfgContainer [2018-07-24 03:26:15,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 03:26:15,572 INFO L168 Benchmark]: Toolchain (without parser) took 243809.08 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -943.8 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-07-24 03:26:15,573 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 03:26:15,575 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1678.27 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-07-24 03:26:15,576 INFO L168 Benchmark]: Boogie Procedure Inliner took 374.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-07-24 03:26:15,579 INFO L168 Benchmark]: Boogie Preprocessor took 954.13 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 966.8 MB). Free memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 145.3 MB. Max. memory is 7.1 GB. [2018-07-24 03:26:15,582 INFO L168 Benchmark]: RCFGBuilder took 11411.60 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 1.8 GB in the end (delta: 508.2 MB). Peak memory consumption was 508.2 MB. Max. memory is 7.1 GB. [2018-07-24 03:26:15,583 INFO L168 Benchmark]: TraceAbstraction took 229385.42 ms. Allocated memory was 2.5 GB in the beginning and 3.9 GB in the end (delta: 1.4 GB). Free memory was 1.8 GB in the beginning and 2.4 GB in the end (delta: -507.9 MB). Peak memory consumption was 928.7 MB. Max. memory is 7.1 GB. [2018-07-24 03:26:15,594 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1678.27 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 374.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 954.13 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 966.8 MB). Free memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 145.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11411.60 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 1.8 GB in the end (delta: 508.2 MB). Peak memory consumption was 508.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229385.42 ms. Allocated memory was 2.5 GB in the beginning and 3.9 GB in the end (delta: 1.4 GB). Free memory was 1.8 GB in the beginning and 2.4 GB in the end (delta: -507.9 MB). Peak memory consumption was 928.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 206]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 206). Cancelled while BasicCegarLoop was constructing difference of abstraction (81998states) and interpolant automaton (currently 12 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (6994 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 229.3s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 194.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4333 SDtfs, 17359 SDslu, 2177 SDs, 0 SdLazy, 42228 SolverSat, 7066 SolverUnsat, 36 SolverUnknown, 0 SolverNotchecked, 178.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2668 GetRequests, 2609 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 11.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81998occurred in iteration=12, 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: 6.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 42407 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 21.2s InterpolantComputationTime, 9261 NumberOfCodeBlocks, 9261 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 9243 ConstructedInterpolants, 949 QuantifiedInterpolants, 42138685 SizeOfPredicates, 7 NumberOfNonLiveVariables, 3177 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 18 InterpolantComputations, 11 PerfectInterpolantSequences, 9494/11491 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label56_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_03-26-15-612.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label56_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_03-26-15-612.csv Completed graceful shutdown