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/Problem03_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 01:23:46,285 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 01:23:46,287 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 01:23:46,299 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 01:23:46,299 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 01:23:46,300 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 01:23:46,302 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 01:23:46,306 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 01:23:46,309 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 01:23:46,311 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 01:23:46,312 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 01:23:46,312 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 01:23:46,313 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 01:23:46,314 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 01:23:46,315 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 01:23:46,316 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 01:23:46,317 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 01:23:46,319 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 01:23:46,324 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 01:23:46,328 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 01:23:46,331 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 01:23:46,333 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 01:23:46,335 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-24 01:23:46,346 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 01:23:46,364 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 01:23:46,364 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 01:23:46,365 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 01:23:46,365 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-24 01:23:46,366 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-24 01:23:46,366 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-24 01:23:46,366 INFO L133 SettingsManager]: * Use SBE=true [2018-07-24 01:23:46,366 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 01:23:46,366 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 01:23:46,367 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 01:23:46,367 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 01:23:46,367 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 01:23:46,367 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 01:23:46,367 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 01:23:46,368 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 01:23:46,368 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 01:23:46,368 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 01:23:46,368 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 01:23:46,368 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 01:23:46,369 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 01:23:46,369 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 01:23:46,369 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 01:23:46,369 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 01:23:46,369 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-24 01:23:46,370 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 01:23:46,370 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 01:23:46,370 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 01:23:46,370 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 01:23:46,438 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 01:23:46,454 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 01:23:46,464 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 01:23:46,465 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 01:23:46,466 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 01:23:46,467 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label16_true-unreach-call.c [2018-07-24 01:23:46,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7a1a82c4/ca88b33ced1e4df7b80a13be7e95b2f3/FLAG4394c9081 [2018-07-24 01:23:47,220 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 01:23:47,224 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label16_true-unreach-call.c [2018-07-24 01:23:47,251 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7a1a82c4/ca88b33ced1e4df7b80a13be7e95b2f3/FLAG4394c9081 [2018-07-24 01:23:47,271 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7a1a82c4/ca88b33ced1e4df7b80a13be7e95b2f3 [2018-07-24 01:23:47,283 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 01:23:47,285 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 01:23:47,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 01:23:47,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 01:23:47,294 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 01:23:47,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:23:47" (1/1) ... [2018-07-24 01:23:47,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1733f9e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:47, skipping insertion in model container [2018-07-24 01:23:47,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:23:47" (1/1) ... [2018-07-24 01:23:47,545 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 01:23:48,092 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 01:23:48,111 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 01:23:48,417 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 01:23:48,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:48 WrapperNode [2018-07-24 01:23:48,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 01:23:48,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 01:23:48,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 01:23:48,495 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 01:23:48,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:48" (1/1) ... [2018-07-24 01:23:48,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:48" (1/1) ... [2018-07-24 01:23:48,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 01:23:48,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 01:23:48,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 01:23:48,668 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 01:23:48,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:48" (1/1) ... [2018-07-24 01:23:48,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:48" (1/1) ... [2018-07-24 01:23:48,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:48" (1/1) ... [2018-07-24 01:23:48,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:48" (1/1) ... [2018-07-24 01:23:49,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:48" (1/1) ... [2018-07-24 01:23:49,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:48" (1/1) ... [2018-07-24 01:23:49,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:48" (1/1) ... [2018-07-24 01:23:49,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 01:23:49,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 01:23:49,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 01:23:49,072 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 01:23:49,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:48" (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 01:23:49,145 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-24 01:23:49,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 01:23:49,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 01:23:54,957 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 01:23:54,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 01:23:54 BoogieIcfgContainer [2018-07-24 01:23:54,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 01:23:54,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 01:23:54,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 01:23:54,962 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 01:23:54,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 01:23:47" (1/3) ... [2018-07-24 01:23:54,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df80b92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 01:23:54, skipping insertion in model container [2018-07-24 01:23:54,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:48" (2/3) ... [2018-07-24 01:23:54,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df80b92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 01:23:54, skipping insertion in model container [2018-07-24 01:23:54,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 01:23:54" (3/3) ... [2018-07-24 01:23:54,967 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label16_true-unreach-call.c [2018-07-24 01:23:54,977 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 01:23:54,988 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 01:23:55,042 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 01:23:55,043 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 01:23:55,043 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 01:23:55,044 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 01:23:55,044 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 01:23:55,044 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 01:23:55,044 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 01:23:55,044 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 01:23:55,045 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 01:23:55,070 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states. [2018-07-24 01:23:55,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-24 01:23:55,088 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:23:55,089 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:23:55,090 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:23:55,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1181546316, now seen corresponding path program 1 times [2018-07-24 01:23:55,098 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:23:55,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:23:55,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:55,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:23:55,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:23:56,049 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 01:23:56,052 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:23:56,052 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:23:56,057 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:23:56,074 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:23:56,075 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:23:56,078 INFO L87 Difference]: Start difference. First operand 303 states. Second operand 4 states. [2018-07-24 01:23:59,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:23:59,753 INFO L93 Difference]: Finished difference Result 1075 states and 1921 transitions. [2018-07-24 01:23:59,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:23:59,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2018-07-24 01:23:59,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:23:59,782 INFO L225 Difference]: With dead ends: 1075 [2018-07-24 01:23:59,782 INFO L226 Difference]: Without dead ends: 765 [2018-07-24 01:23:59,788 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 01:23:59,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2018-07-24 01:23:59,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 520. [2018-07-24 01:23:59,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-07-24 01:23:59,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 853 transitions. [2018-07-24 01:23:59,892 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 853 transitions. Word has length 166 [2018-07-24 01:23:59,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:23:59,893 INFO L471 AbstractCegarLoop]: Abstraction has 520 states and 853 transitions. [2018-07-24 01:23:59,893 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:23:59,893 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 853 transitions. [2018-07-24 01:23:59,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-07-24 01:23:59,899 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:23:59,899 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 01:23:59,899 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:23:59,900 INFO L82 PathProgramCache]: Analyzing trace with hash 857919243, now seen corresponding path program 1 times [2018-07-24 01:23:59,900 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:23:59,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:23:59,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:59,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:23:59,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:24:00,038 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 01:24:00,038 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:24:00,038 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-24 01:24:00,042 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 01:24:00,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 01:24:00,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:24:00,043 INFO L87 Difference]: Start difference. First operand 520 states and 853 transitions. Second operand 3 states. [2018-07-24 01:24:02,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:24:02,250 INFO L93 Difference]: Finished difference Result 1465 states and 2463 transitions. [2018-07-24 01:24:02,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:24:02,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2018-07-24 01:24:02,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:24:02,258 INFO L225 Difference]: With dead ends: 1465 [2018-07-24 01:24:02,258 INFO L226 Difference]: Without dead ends: 947 [2018-07-24 01:24:02,267 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 01:24:02,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2018-07-24 01:24:02,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 931. [2018-07-24 01:24:02,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 931 states. [2018-07-24 01:24:02,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1508 transitions. [2018-07-24 01:24:02,331 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1508 transitions. Word has length 175 [2018-07-24 01:24:02,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:24:02,331 INFO L471 AbstractCegarLoop]: Abstraction has 931 states and 1508 transitions. [2018-07-24 01:24:02,331 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 01:24:02,332 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1508 transitions. [2018-07-24 01:24:02,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-07-24 01:24:02,346 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:24:02,346 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2018-07-24 01:24:02,347 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:24:02,347 INFO L82 PathProgramCache]: Analyzing trace with hash 954136543, now seen corresponding path program 1 times [2018-07-24 01:24:02,347 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:24:02,347 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:24:02,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:02,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:24:02,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:24:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 01:24:02,694 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:24:02,694 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:24:02,695 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 01:24:02,695 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 01:24:02,696 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:24:02,696 INFO L87 Difference]: Start difference. First operand 931 states and 1508 transitions. Second operand 3 states. [2018-07-24 01:24:06,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:24:06,176 INFO L93 Difference]: Finished difference Result 2693 states and 4423 transitions. [2018-07-24 01:24:06,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:24:06,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2018-07-24 01:24:06,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:24:06,188 INFO L225 Difference]: With dead ends: 2693 [2018-07-24 01:24:06,188 INFO L226 Difference]: Without dead ends: 1764 [2018-07-24 01:24:06,191 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 01:24:06,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2018-07-24 01:24:06,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1748. [2018-07-24 01:24:06,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1748 states. [2018-07-24 01:24:06,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2752 transitions. [2018-07-24 01:24:06,237 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2752 transitions. Word has length 183 [2018-07-24 01:24:06,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:24:06,238 INFO L471 AbstractCegarLoop]: Abstraction has 1748 states and 2752 transitions. [2018-07-24 01:24:06,238 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 01:24:06,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2752 transitions. [2018-07-24 01:24:06,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-24 01:24:06,244 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:24:06,244 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:06,244 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:24:06,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1279454467, now seen corresponding path program 1 times [2018-07-24 01:24:06,245 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:24:06,245 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:24:06,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:06,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:24:06,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:24:06,523 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 01:24:06,523 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:24:06,523 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 01:24:06,524 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:24:06,524 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:24:06,524 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:24:06,525 INFO L87 Difference]: Start difference. First operand 1748 states and 2752 transitions. Second operand 4 states. [2018-07-24 01:24:09,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:24:09,294 INFO L93 Difference]: Finished difference Result 6761 states and 10745 transitions. [2018-07-24 01:24:09,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:24:09,301 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 190 [2018-07-24 01:24:09,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:24:09,332 INFO L225 Difference]: With dead ends: 6761 [2018-07-24 01:24:09,333 INFO L226 Difference]: Without dead ends: 5015 [2018-07-24 01:24:09,336 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:24:09,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5015 states. [2018-07-24 01:24:09,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5015 to 5013. [2018-07-24 01:24:09,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5013 states. [2018-07-24 01:24:09,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 6863 transitions. [2018-07-24 01:24:09,450 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 6863 transitions. Word has length 190 [2018-07-24 01:24:09,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:24:09,451 INFO L471 AbstractCegarLoop]: Abstraction has 5013 states and 6863 transitions. [2018-07-24 01:24:09,451 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:24:09,451 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 6863 transitions. [2018-07-24 01:24:09,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-24 01:24:09,462 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:24:09,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:09,462 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:24:09,463 INFO L82 PathProgramCache]: Analyzing trace with hash 2138090957, now seen corresponding path program 1 times [2018-07-24 01:24:09,463 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:24:09,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:24:09,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:09,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:24:09,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:24:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 01:24:09,787 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:24:09,787 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:24:09,787 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:24:09,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:24:09,788 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:24:09,788 INFO L87 Difference]: Start difference. First operand 5013 states and 6863 transitions. Second operand 4 states. [2018-07-24 01:24:12,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:24:12,928 INFO L93 Difference]: Finished difference Result 19658 states and 26908 transitions. [2018-07-24 01:24:12,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:24:12,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 197 [2018-07-24 01:24:12,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:24:12,997 INFO L225 Difference]: With dead ends: 19658 [2018-07-24 01:24:12,998 INFO L226 Difference]: Without dead ends: 14647 [2018-07-24 01:24:13,011 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 01:24:13,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14647 states. [2018-07-24 01:24:13,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14647 to 9913. [2018-07-24 01:24:13,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9913 states. [2018-07-24 01:24:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9913 states to 9913 states and 12923 transitions. [2018-07-24 01:24:13,217 INFO L78 Accepts]: Start accepts. Automaton has 9913 states and 12923 transitions. Word has length 197 [2018-07-24 01:24:13,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:24:13,217 INFO L471 AbstractCegarLoop]: Abstraction has 9913 states and 12923 transitions. [2018-07-24 01:24:13,217 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:24:13,217 INFO L276 IsEmpty]: Start isEmpty. Operand 9913 states and 12923 transitions. [2018-07-24 01:24:13,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-24 01:24:13,235 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:24:13,235 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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] [2018-07-24 01:24:13,235 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:24:13,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1450295005, now seen corresponding path program 1 times [2018-07-24 01:24:13,236 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:24:13,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:24:13,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:13,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:24:13,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:24:13,374 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-07-24 01:24:13,375 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:24:13,375 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-24 01:24:13,375 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 01:24:13,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 01:24:13,376 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:24:13,376 INFO L87 Difference]: Start difference. First operand 9913 states and 12923 transitions. Second operand 3 states. [2018-07-24 01:24:14,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:24:14,436 INFO L93 Difference]: Finished difference Result 19384 states and 25115 transitions. [2018-07-24 01:24:14,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:24:14,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2018-07-24 01:24:14,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:24:14,466 INFO L225 Difference]: With dead ends: 19384 [2018-07-24 01:24:14,466 INFO L226 Difference]: Without dead ends: 9473 [2018-07-24 01:24:14,477 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 01:24:14,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9473 states. [2018-07-24 01:24:14,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9473 to 9473. [2018-07-24 01:24:14,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9473 states. [2018-07-24 01:24:14,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9473 states to 9473 states and 11934 transitions. [2018-07-24 01:24:14,620 INFO L78 Accepts]: Start accepts. Automaton has 9473 states and 11934 transitions. Word has length 204 [2018-07-24 01:24:14,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:24:14,620 INFO L471 AbstractCegarLoop]: Abstraction has 9473 states and 11934 transitions. [2018-07-24 01:24:14,621 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 01:24:14,621 INFO L276 IsEmpty]: Start isEmpty. Operand 9473 states and 11934 transitions. [2018-07-24 01:24:14,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-24 01:24:14,634 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:24:14,634 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:14,634 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:24:14,635 INFO L82 PathProgramCache]: Analyzing trace with hash -556764996, now seen corresponding path program 1 times [2018-07-24 01:24:14,635 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:24:14,635 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:24:14,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:14,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:24:14,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:24:14,846 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 01:24:14,846 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:24:14,846 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-24 01:24:14,847 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 01:24:14,847 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 01:24:14,847 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:24:14,848 INFO L87 Difference]: Start difference. First operand 9473 states and 11934 transitions. Second operand 3 states. [2018-07-24 01:24:16,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:24:16,356 INFO L93 Difference]: Finished difference Result 22014 states and 27589 transitions. [2018-07-24 01:24:16,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:24:16,357 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2018-07-24 01:24:16,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:24:16,379 INFO L225 Difference]: With dead ends: 22014 [2018-07-24 01:24:16,379 INFO L226 Difference]: Without dead ends: 12543 [2018-07-24 01:24:16,390 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 01:24:16,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12543 states. [2018-07-24 01:24:16,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12543 to 12542. [2018-07-24 01:24:16,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12542 states. [2018-07-24 01:24:16,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12542 states to 12542 states and 15511 transitions. [2018-07-24 01:24:16,553 INFO L78 Accepts]: Start accepts. Automaton has 12542 states and 15511 transitions. Word has length 208 [2018-07-24 01:24:16,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:24:16,554 INFO L471 AbstractCegarLoop]: Abstraction has 12542 states and 15511 transitions. [2018-07-24 01:24:16,554 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 01:24:16,554 INFO L276 IsEmpty]: Start isEmpty. Operand 12542 states and 15511 transitions. [2018-07-24 01:24:16,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-24 01:24:16,572 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:24:16,573 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:24:16,573 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:24:16,573 INFO L82 PathProgramCache]: Analyzing trace with hash 361214568, now seen corresponding path program 1 times [2018-07-24 01:24:16,573 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:24:16,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:24:16,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:16,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:24:16,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:24:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 52 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 01:24:16,921 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 01:24:16,921 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 01:24:16,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:24:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:24:17,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 01:24:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 01:24:17,315 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 01:24:17,315 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-07-24 01:24:17,316 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 01:24:17,316 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 01:24:17,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 01:24:17,317 INFO L87 Difference]: Start difference. First operand 12542 states and 15511 transitions. Second operand 6 states. [2018-07-24 01:24:17,549 WARN L169 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2018-07-24 01:24:24,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:24:24,116 INFO L93 Difference]: Finished difference Result 41646 states and 50213 transitions. [2018-07-24 01:24:24,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 01:24:24,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 216 [2018-07-24 01:24:24,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:24:24,188 INFO L225 Difference]: With dead ends: 41646 [2018-07-24 01:24:24,188 INFO L226 Difference]: Without dead ends: 29105 [2018-07-24 01:24:24,206 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2018-07-24 01:24:24,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29105 states. [2018-07-24 01:24:24,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29105 to 29100. [2018-07-24 01:24:24,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29100 states. [2018-07-24 01:24:24,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29100 states to 29100 states and 32621 transitions. [2018-07-24 01:24:24,624 INFO L78 Accepts]: Start accepts. Automaton has 29100 states and 32621 transitions. Word has length 216 [2018-07-24 01:24:24,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:24:24,624 INFO L471 AbstractCegarLoop]: Abstraction has 29100 states and 32621 transitions. [2018-07-24 01:24:24,624 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 01:24:24,625 INFO L276 IsEmpty]: Start isEmpty. Operand 29100 states and 32621 transitions. [2018-07-24 01:24:24,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-24 01:24:24,663 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:24:24,664 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:24,664 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:24:24,665 INFO L82 PathProgramCache]: Analyzing trace with hash 585273194, now seen corresponding path program 1 times [2018-07-24 01:24:24,665 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:24:24,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:24:24,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:24,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:24:24,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:24:24,991 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-07-24 01:24:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-07-24 01:24:25,050 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:24:25,050 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:24:25,050 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:24:25,051 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:24:25,051 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:24:25,051 INFO L87 Difference]: Start difference. First operand 29100 states and 32621 transitions. Second operand 4 states. [2018-07-24 01:24:27,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:24:27,215 INFO L93 Difference]: Finished difference Result 57593 states and 64584 transitions. [2018-07-24 01:24:27,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:24:27,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 256 [2018-07-24 01:24:27,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:24:27,281 INFO L225 Difference]: With dead ends: 57593 [2018-07-24 01:24:27,281 INFO L226 Difference]: Without dead ends: 28495 [2018-07-24 01:24:27,310 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:24:27,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28495 states. [2018-07-24 01:24:27,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28495 to 28485. [2018-07-24 01:24:27,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28485 states. [2018-07-24 01:24:27,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28485 states to 28485 states and 31591 transitions. [2018-07-24 01:24:27,698 INFO L78 Accepts]: Start accepts. Automaton has 28485 states and 31591 transitions. Word has length 256 [2018-07-24 01:24:27,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:24:27,699 INFO L471 AbstractCegarLoop]: Abstraction has 28485 states and 31591 transitions. [2018-07-24 01:24:27,699 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:24:27,699 INFO L276 IsEmpty]: Start isEmpty. Operand 28485 states and 31591 transitions. [2018-07-24 01:24:27,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-07-24 01:24:27,955 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:24:27,956 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:27,956 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:24:27,957 INFO L82 PathProgramCache]: Analyzing trace with hash -517916135, now seen corresponding path program 1 times [2018-07-24 01:24:27,957 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:24:27,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:24:27,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:27,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:24:27,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:24:28,329 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 01:24:28,330 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:24:28,330 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:24:28,331 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:24:28,331 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:24:28,331 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:24:28,331 INFO L87 Difference]: Start difference. First operand 28485 states and 31591 transitions. Second operand 4 states. [2018-07-24 01:24:31,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:24:31,044 INFO L93 Difference]: Finished difference Result 59427 states and 65905 transitions. [2018-07-24 01:24:31,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:24:31,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 277 [2018-07-24 01:24:31,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:24:31,090 INFO L225 Difference]: With dead ends: 59427 [2018-07-24 01:24:31,090 INFO L226 Difference]: Without dead ends: 30944 [2018-07-24 01:24:31,115 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 01:24:31,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30944 states. [2018-07-24 01:24:31,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30944 to 30933. [2018-07-24 01:24:31,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30933 states. [2018-07-24 01:24:31,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30933 states to 30933 states and 33979 transitions. [2018-07-24 01:24:31,511 INFO L78 Accepts]: Start accepts. Automaton has 30933 states and 33979 transitions. Word has length 277 [2018-07-24 01:24:31,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:24:31,512 INFO L471 AbstractCegarLoop]: Abstraction has 30933 states and 33979 transitions. [2018-07-24 01:24:31,512 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:24:31,512 INFO L276 IsEmpty]: Start isEmpty. Operand 30933 states and 33979 transitions. [2018-07-24 01:24:31,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-24 01:24:31,541 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:24:31,542 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 01:24:31,542 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:24:31,542 INFO L82 PathProgramCache]: Analyzing trace with hash -929080328, now seen corresponding path program 1 times [2018-07-24 01:24:31,542 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:24:31,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:24:31,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:31,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:24:31,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:24:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 01:24:31,802 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:24:31,803 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:24:31,803 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 01:24:31,803 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 01:24:31,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:24:31,804 INFO L87 Difference]: Start difference. First operand 30933 states and 33979 transitions. Second operand 3 states. [2018-07-24 01:24:33,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:24:33,310 INFO L93 Difference]: Finished difference Result 60638 states and 66647 transitions. [2018-07-24 01:24:33,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:24:33,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 294 [2018-07-24 01:24:33,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:24:33,352 INFO L225 Difference]: With dead ends: 60638 [2018-07-24 01:24:33,352 INFO L226 Difference]: Without dead ends: 29707 [2018-07-24 01:24:33,377 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 01:24:33,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29707 states. [2018-07-24 01:24:34,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29707 to 29704. [2018-07-24 01:24:34,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29704 states. [2018-07-24 01:24:34,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29704 states to 29704 states and 31982 transitions. [2018-07-24 01:24:34,061 INFO L78 Accepts]: Start accepts. Automaton has 29704 states and 31982 transitions. Word has length 294 [2018-07-24 01:24:34,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:24:34,061 INFO L471 AbstractCegarLoop]: Abstraction has 29704 states and 31982 transitions. [2018-07-24 01:24:34,062 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 01:24:34,062 INFO L276 IsEmpty]: Start isEmpty. Operand 29704 states and 31982 transitions. [2018-07-24 01:24:34,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-24 01:24:34,079 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:24:34,079 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:34,080 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:24:34,080 INFO L82 PathProgramCache]: Analyzing trace with hash 896536754, now seen corresponding path program 1 times [2018-07-24 01:24:34,080 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:24:34,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:24:34,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:34,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:24:34,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:24:34,414 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 01:24:34,414 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:24:34,414 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:24:34,415 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:24:34,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:24:34,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:24:34,416 INFO L87 Difference]: Start difference. First operand 29704 states and 31982 transitions. Second operand 4 states. [2018-07-24 01:24:35,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:24:35,624 INFO L93 Difference]: Finished difference Result 113697 states and 122552 transitions. [2018-07-24 01:24:35,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:24:35,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 298 [2018-07-24 01:24:35,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:24:35,706 INFO L225 Difference]: With dead ends: 113697 [2018-07-24 01:24:35,706 INFO L226 Difference]: Without dead ends: 83995 [2018-07-24 01:24:35,736 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 01:24:35,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83995 states. [2018-07-24 01:24:36,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83995 to 54905. [2018-07-24 01:24:36,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54905 states. [2018-07-24 01:24:36,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54905 states to 54905 states and 59228 transitions. [2018-07-24 01:24:36,415 INFO L78 Accepts]: Start accepts. Automaton has 54905 states and 59228 transitions. Word has length 298 [2018-07-24 01:24:36,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:24:36,415 INFO L471 AbstractCegarLoop]: Abstraction has 54905 states and 59228 transitions. [2018-07-24 01:24:36,415 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:24:36,416 INFO L276 IsEmpty]: Start isEmpty. Operand 54905 states and 59228 transitions. [2018-07-24 01:24:36,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-07-24 01:24:36,431 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:24:36,432 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 01:24:36,432 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:24:36,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1594120854, now seen corresponding path program 1 times [2018-07-24 01:24:36,432 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:24:36,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:24:36,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:36,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:24:36,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:24:36,808 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-07-24 01:24:36,808 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:24:36,808 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 01:24:36,809 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 01:24:36,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 01:24:36,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 01:24:36,809 INFO L87 Difference]: Start difference. First operand 54905 states and 59228 transitions. Second operand 5 states. [2018-07-24 01:24:39,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:24:39,775 INFO L93 Difference]: Finished difference Result 146909 states and 158913 transitions. [2018-07-24 01:24:39,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 01:24:39,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 301 [2018-07-24 01:24:39,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:24:39,878 INFO L225 Difference]: With dead ends: 146909 [2018-07-24 01:24:39,878 INFO L226 Difference]: Without dead ends: 92006 [2018-07-24 01:24:39,918 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 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 01:24:39,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92006 states. [2018-07-24 01:24:40,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92006 to 88701. [2018-07-24 01:24:40,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88701 states. [2018-07-24 01:24:40,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88701 states to 88701 states and 95663 transitions. [2018-07-24 01:24:40,797 INFO L78 Accepts]: Start accepts. Automaton has 88701 states and 95663 transitions. Word has length 301 [2018-07-24 01:24:40,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:24:40,797 INFO L471 AbstractCegarLoop]: Abstraction has 88701 states and 95663 transitions. [2018-07-24 01:24:40,797 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 01:24:40,797 INFO L276 IsEmpty]: Start isEmpty. Operand 88701 states and 95663 transitions. [2018-07-24 01:24:40,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-24 01:24:40,816 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:24:40,816 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:24:40,816 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:24:40,817 INFO L82 PathProgramCache]: Analyzing trace with hash 2085940146, now seen corresponding path program 1 times [2018-07-24 01:24:40,817 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:24:40,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:24:40,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:40,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:24:40,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:24:41,013 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-07-24 01:24:41,013 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:24:41,013 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:24:41,014 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 01:24:41,014 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 01:24:41,014 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:24:41,015 INFO L87 Difference]: Start difference. First operand 88701 states and 95663 transitions. Second operand 3 states. [2018-07-24 01:24:43,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:24:43,290 INFO L93 Difference]: Finished difference Result 189254 states and 204910 transitions. [2018-07-24 01:24:43,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:24:43,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 310 [2018-07-24 01:24:43,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:24:43,430 INFO L225 Difference]: With dead ends: 189254 [2018-07-24 01:24:43,430 INFO L226 Difference]: Without dead ends: 100555 [2018-07-24 01:24:43,476 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 01:24:43,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100555 states. [2018-07-24 01:24:44,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100555 to 99315. [2018-07-24 01:24:44,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99315 states. [2018-07-24 01:24:44,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99315 states to 99315 states and 106923 transitions. [2018-07-24 01:24:44,524 INFO L78 Accepts]: Start accepts. Automaton has 99315 states and 106923 transitions. Word has length 310 [2018-07-24 01:24:44,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:24:44,524 INFO L471 AbstractCegarLoop]: Abstraction has 99315 states and 106923 transitions. [2018-07-24 01:24:44,524 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 01:24:44,524 INFO L276 IsEmpty]: Start isEmpty. Operand 99315 states and 106923 transitions. [2018-07-24 01:24:44,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-07-24 01:24:44,539 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:24:44,539 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:44,539 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:24:44,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1161646625, now seen corresponding path program 1 times [2018-07-24 01:24:44,539 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:24:44,540 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:24:44,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:44,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:24:44,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:24:45,074 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-07-24 01:24:45,074 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:24:45,074 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 01:24:45,075 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 01:24:45,075 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 01:24:45,075 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 01:24:45,075 INFO L87 Difference]: Start difference. First operand 99315 states and 106923 transitions. Second operand 5 states. [2018-07-24 01:24:47,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:24:47,466 INFO L93 Difference]: Finished difference Result 284203 states and 305725 transitions. [2018-07-24 01:24:47,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:24:47,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2018-07-24 01:24:47,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:24:47,675 INFO L225 Difference]: With dead ends: 284203 [2018-07-24 01:24:47,675 INFO L226 Difference]: Without dead ends: 184890 [2018-07-24 01:24:48,666 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 01:24:48,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184890 states. [2018-07-24 01:24:50,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184890 to 183250. [2018-07-24 01:24:50,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183250 states. [2018-07-24 01:24:50,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183250 states to 183250 states and 197005 transitions. [2018-07-24 01:24:50,424 INFO L78 Accepts]: Start accepts. Automaton has 183250 states and 197005 transitions. Word has length 327 [2018-07-24 01:24:50,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:24:50,424 INFO L471 AbstractCegarLoop]: Abstraction has 183250 states and 197005 transitions. [2018-07-24 01:24:50,424 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 01:24:50,424 INFO L276 IsEmpty]: Start isEmpty. Operand 183250 states and 197005 transitions. [2018-07-24 01:24:50,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-07-24 01:24:50,447 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:24:50,447 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:50,447 INFO L414 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:24:50,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1983424605, now seen corresponding path program 1 times [2018-07-24 01:24:50,448 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:24:50,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:24:50,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:50,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:24:50,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:24:51,057 WARN L169 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-07-24 01:24:51,157 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 182 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 01:24:51,158 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 01:24:51,158 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 01:24:51,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:24:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:24:51,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 01:24:52,490 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-07-24 01:24:52,526 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 01:24:52,527 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-07-24 01:24:52,529 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 01:24:52,529 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 01:24:52,529 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 01:24:52,529 INFO L87 Difference]: Start difference. First operand 183250 states and 197005 transitions. Second operand 6 states. [2018-07-24 01:24:59,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:24:59,536 INFO L93 Difference]: Finished difference Result 348920 states and 375336 transitions. [2018-07-24 01:24:59,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 01:24:59,536 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 329 [2018-07-24 01:24:59,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:24:59,801 INFO L225 Difference]: With dead ends: 348920 [2018-07-24 01:24:59,802 INFO L226 Difference]: Without dead ends: 165672 [2018-07-24 01:24:59,942 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-07-24 01:25:00,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165672 states. [2018-07-24 01:25:03,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165672 to 161733. [2018-07-24 01:25:03,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161733 states. [2018-07-24 01:25:03,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161733 states to 161733 states and 170511 transitions. [2018-07-24 01:25:03,776 INFO L78 Accepts]: Start accepts. Automaton has 161733 states and 170511 transitions. Word has length 329 [2018-07-24 01:25:03,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:25:03,777 INFO L471 AbstractCegarLoop]: Abstraction has 161733 states and 170511 transitions. [2018-07-24 01:25:03,777 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 01:25:03,777 INFO L276 IsEmpty]: Start isEmpty. Operand 161733 states and 170511 transitions. [2018-07-24 01:25:03,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-07-24 01:25:03,825 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:25:03,826 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:03,826 INFO L414 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:25:03,826 INFO L82 PathProgramCache]: Analyzing trace with hash -777036058, now seen corresponding path program 1 times [2018-07-24 01:25:03,826 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:25:03,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:25:03,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:25:03,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:25:03,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:25:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:25:04,484 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 207 proven. 32 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-07-24 01:25:04,485 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 01:25:04,485 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 01:25:04,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:25:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:25:04,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 01:25:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-07-24 01:25:04,866 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 01:25:04,866 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2018-07-24 01:25:04,867 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:25:04,867 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:25:04,868 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:25:04,868 INFO L87 Difference]: Start difference. First operand 161733 states and 170511 transitions. Second operand 4 states. [2018-07-24 01:25:08,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:25:08,274 INFO L93 Difference]: Finished difference Result 558736 states and 589028 transitions. [2018-07-24 01:25:08,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:25:08,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 378 [2018-07-24 01:25:08,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:25:08,915 INFO L225 Difference]: With dead ends: 558736 [2018-07-24 01:25:08,915 INFO L226 Difference]: Without dead ends: 397005 [2018-07-24 01:25:09,037 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 378 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 01:25:09,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397005 states. [2018-07-24 01:25:18,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397005 to 263722. [2018-07-24 01:25:18,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263722 states. [2018-07-24 01:25:18,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263722 states to 263722 states and 277651 transitions. [2018-07-24 01:25:18,785 INFO L78 Accepts]: Start accepts. Automaton has 263722 states and 277651 transitions. Word has length 378 [2018-07-24 01:25:18,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:25:18,786 INFO L471 AbstractCegarLoop]: Abstraction has 263722 states and 277651 transitions. [2018-07-24 01:25:18,786 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:25:18,786 INFO L276 IsEmpty]: Start isEmpty. Operand 263722 states and 277651 transitions. [2018-07-24 01:25:18,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2018-07-24 01:25:18,902 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:25:18,902 INFO L353 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:18,902 INFO L414 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:25:18,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1351663469, now seen corresponding path program 1 times [2018-07-24 01:25:18,903 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:25:18,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:25:18,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:25:18,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:25:18,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:25:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:25:19,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2018-07-24 01:25:19,461 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:25:19,461 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:25:19,462 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:25:19,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:25:19,462 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:25:19,463 INFO L87 Difference]: Start difference. First operand 263722 states and 277651 transitions. Second operand 4 states. [2018-07-24 01:25:26,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:25:26,068 INFO L93 Difference]: Finished difference Result 961941 states and 1011849 transitions. [2018-07-24 01:25:26,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:25:26,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 574 [2018-07-24 01:25:26,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:25:28,498 INFO L225 Difference]: With dead ends: 961941 [2018-07-24 01:25:28,498 INFO L226 Difference]: Without dead ends: 698221 [2018-07-24 01:25:28,714 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:25:29,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698221 states. [2018-07-24 01:25:38,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698221 to 673427. [2018-07-24 01:25:38,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673427 states. [2018-07-24 01:25:39,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673427 states to 673427 states and 708294 transitions. [2018-07-24 01:25:39,561 INFO L78 Accepts]: Start accepts. Automaton has 673427 states and 708294 transitions. Word has length 574 [2018-07-24 01:25:39,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:25:39,562 INFO L471 AbstractCegarLoop]: Abstraction has 673427 states and 708294 transitions. [2018-07-24 01:25:39,562 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:25:39,562 INFO L276 IsEmpty]: Start isEmpty. Operand 673427 states and 708294 transitions. [2018-07-24 01:25:39,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2018-07-24 01:25:39,706 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:25:39,707 INFO L353 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:39,707 INFO L414 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:25:39,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1419604446, now seen corresponding path program 1 times [2018-07-24 01:25:39,707 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:25:39,708 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:25:39,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:25:39,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:25:39,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:25:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:25:41,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 927 trivial. 0 not checked. [2018-07-24 01:25:41,864 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:25:41,864 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:25:41,864 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 01:25:41,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 01:25:41,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:25:41,865 INFO L87 Difference]: Start difference. First operand 673427 states and 708294 transitions. Second operand 3 states. [2018-07-24 01:25:55,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:25:55,328 INFO L93 Difference]: Finished difference Result 1348334 states and 1418184 transitions. [2018-07-24 01:25:55,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:25:55,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 624 [2018-07-24 01:25:55,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:25:56,395 INFO L225 Difference]: With dead ends: 1348334 [2018-07-24 01:25:56,396 INFO L226 Difference]: Without dead ends: 674909 [2018-07-24 01:25:56,710 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 01:25:58,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674909 states. [2018-07-24 01:26:06,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674909 to 674855. [2018-07-24 01:26:06,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674855 states. [2018-07-24 01:26:08,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674855 states to 674855 states and 709625 transitions. [2018-07-24 01:26:08,542 INFO L78 Accepts]: Start accepts. Automaton has 674855 states and 709625 transitions. Word has length 624 [2018-07-24 01:26:08,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:26:08,542 INFO L471 AbstractCegarLoop]: Abstraction has 674855 states and 709625 transitions. [2018-07-24 01:26:08,543 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 01:26:08,543 INFO L276 IsEmpty]: Start isEmpty. Operand 674855 states and 709625 transitions. [2018-07-24 01:26:08,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2018-07-24 01:26:08,662 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:26:08,663 INFO L353 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:08,663 INFO L414 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:26:08,664 INFO L82 PathProgramCache]: Analyzing trace with hash -2119009462, now seen corresponding path program 1 times [2018-07-24 01:26:08,664 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:26:08,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:26:08,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:26:08,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:26:08,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:26:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:26:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2018-07-24 01:26:09,128 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:26:09,128 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:26:09,129 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:26:09,129 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:26:09,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:26:09,130 INFO L87 Difference]: Start difference. First operand 674855 states and 709625 transitions. Second operand 4 states. [2018-07-24 01:26:19,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:26:19,497 INFO L93 Difference]: Finished difference Result 1868556 states and 1963289 transitions. [2018-07-24 01:26:19,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:26:19,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 630 [2018-07-24 01:26:19,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:26:21,098 INFO L225 Difference]: With dead ends: 1868556 [2018-07-24 01:26:21,099 INFO L226 Difference]: Without dead ends: 1193703 [2018-07-24 01:26:21,462 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 01:26:22,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193703 states. [2018-07-24 01:26:50,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193703 to 1182010. [2018-07-24 01:26:50,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1182010 states. [2018-07-24 01:26:51,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182010 states to 1182010 states and 1240253 transitions. [2018-07-24 01:26:51,528 INFO L78 Accepts]: Start accepts. Automaton has 1182010 states and 1240253 transitions. Word has length 630 [2018-07-24 01:26:51,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:26:51,529 INFO L471 AbstractCegarLoop]: Abstraction has 1182010 states and 1240253 transitions. [2018-07-24 01:26:51,529 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:26:51,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1182010 states and 1240253 transitions. [2018-07-24 01:26:53,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2018-07-24 01:26:53,552 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:26:53,552 INFO L353 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 01:26:53,553 INFO L414 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:26:53,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1351043834, now seen corresponding path program 1 times [2018-07-24 01:26:53,553 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:26:53,553 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:26:53,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:26:53,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:26:53,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:26:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:26:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 485 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2018-07-24 01:26:53,957 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:26:53,957 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:26:53,958 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 01:26:53,958 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 01:26:53,958 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:26:53,958 INFO L87 Difference]: Start difference. First operand 1182010 states and 1240253 transitions. Second operand 3 states. Received shutdown request... [2018-07-24 01:27:13,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:27:13,296 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 01:27:13,302 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 01:27:13,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 01:27:13 BoogieIcfgContainer [2018-07-24 01:27:13,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 01:27:13,303 INFO L168 Benchmark]: Toolchain (without parser) took 206019.35 ms. Allocated memory was 1.5 GB in the beginning and 6.6 GB in the end (delta: 5.0 GB). Free memory was 1.4 GB in the beginning and 4.2 GB in the end (delta: -2.8 GB). Peak memory consumption was 5.4 GB. Max. memory is 7.1 GB. [2018-07-24 01:27:13,304 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. [2018-07-24 01:27:13,305 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1207.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-07-24 01:27:13,305 INFO L168 Benchmark]: Boogie Procedure Inliner took 173.29 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-24 01:27:13,306 INFO L168 Benchmark]: Boogie Preprocessor took 403.20 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 821.0 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -952.3 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. [2018-07-24 01:27:13,307 INFO L168 Benchmark]: RCFGBuilder took 5886.46 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 286.2 MB). Peak memory consumption was 286.2 MB. Max. memory is 7.1 GB. [2018-07-24 01:27:13,308 INFO L168 Benchmark]: TraceAbstraction took 198343.29 ms. Allocated memory was 2.4 GB in the beginning and 6.6 GB in the end (delta: 4.2 GB). Free memory was 2.0 GB in the beginning and 4.2 GB in the end (delta: -2.2 GB). Peak memory consumption was 5.2 GB. Max. memory is 7.1 GB. [2018-07-24 01:27:13,317 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 1207.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 173.29 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 403.20 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 821.0 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -952.3 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5886.46 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 286.2 MB). Peak memory consumption was 286.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 198343.29 ms. Allocated memory was 2.4 GB in the beginning and 6.6 GB in the end (delta: 4.2 GB). Free memory was 2.0 GB in the beginning and 4.2 GB in the end (delta: -2.2 GB). Peak memory consumption was 5.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1530]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1530). Cancelled while BasicCegarLoop was constructing difference of abstraction (1182010states) and interpolant automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (1280081 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 303 locations, 1 error locations. TIMEOUT Result, 198.2s OverallTime, 21 OverallIterations, 11 TraceHistogramMax, 109.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5285 SDtfs, 13587 SDslu, 4163 SDs, 0 SdLazy, 21122 SolverSat, 3953 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 42.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1008 GetRequests, 954 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1182010occurred in iteration=20, 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: 73.3s AutomataMinimizationTime, 20 MinimizatonAttempts, 214081 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 7700 NumberOfCodeBlocks, 7700 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 7676 ConstructedInterpolants, 0 QuantifiedInterpolants, 5731375 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1646 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 24 InterpolantComputations, 21 PerfectInterpolantSequences, 7705/7746 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/Problem03_label16_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_01-27-13-330.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label16_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_01-27-13-330.csv Completed graceful shutdown