java -Xss4m -Xmx6000000000 -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 ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label24_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 02:53:22,869 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 02:53:22,871 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 02:53:22,882 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 02:53:22,883 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 02:53:22,884 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 02:53:22,887 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 02:53:22,888 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 02:53:22,890 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 02:53:22,891 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 02:53:22,892 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 02:53:22,892 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 02:53:22,893 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 02:53:22,894 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 02:53:22,895 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 02:53:22,896 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 02:53:22,897 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 02:53:22,898 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 02:53:22,906 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 02:53:22,908 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 02:53:22,909 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 02:53:22,910 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 02:53:22,913 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-22 02:53:22,913 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-22 02:53:22,913 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-22 02:53:22,923 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-22 02:53:22,924 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-22 02:53:22,925 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-22 02:53:22,926 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-22 02:53:22,927 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-22 02:53:22,927 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-22 02:53:22,928 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-22 02:53:22,928 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-22 02:53:22,928 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-22 02:53:22,929 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-22 02:53:22,929 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-22 02:53:22,930 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-22 02:53:22,957 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 02:53:22,958 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 02:53:22,958 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 02:53:22,959 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 02:53:22,959 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 02:53:22,959 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 02:53:22,959 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 02:53:22,960 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 02:53:22,960 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 02:53:22,960 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 02:53:22,960 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 02:53:22,960 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 02:53:22,961 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 02:53:22,961 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 02:53:22,961 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 02:53:22,961 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 02:53:22,961 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 02:53:22,962 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 02:53:22,962 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 02:53:22,962 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 02:53:22,962 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 02:53:22,962 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 02:53:22,962 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 02:53:22,963 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 02:53:22,963 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 02:53:22,963 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 02:53:22,963 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 02:53:22,963 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 02:53:22,963 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 02:53:23,006 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 02:53:23,021 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 02:53:23,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 02:53:23,031 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 02:53:23,031 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 02:53:23,032 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label24_false-unreach-call.c [2018-07-22 02:53:23,416 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/240841e16/3a1499e9fe3f42e7888ac3493ae67f4a/FLAG363c7cb38 [2018-07-22 02:53:23,959 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 02:53:23,960 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label24_false-unreach-call.c [2018-07-22 02:53:24,022 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/240841e16/3a1499e9fe3f42e7888ac3493ae67f4a/FLAG363c7cb38 [2018-07-22 02:53:24,045 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/240841e16/3a1499e9fe3f42e7888ac3493ae67f4a [2018-07-22 02:53:24,058 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 02:53:24,066 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 02:53:24,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 02:53:24,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 02:53:24,074 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 02:53:24,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:53:24" (1/1) ... [2018-07-22 02:53:24,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7896933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:53:24, skipping insertion in model container [2018-07-22 02:53:24,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:53:24" (1/1) ... [2018-07-22 02:53:24,522 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 02:53:25,899 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 02:53:25,919 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 02:53:26,940 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 02:53:27,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:53:27 WrapperNode [2018-07-22 02:53:27,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 02:53:27,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 02:53:27,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 02:53:27,256 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 02:53:27,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:53:27" (1/1) ... [2018-07-22 02:53:27,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:53:27" (1/1) ... [2018-07-22 02:53:28,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 02:53:28,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 02:53:28,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 02:53:28,023 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 02:53:28,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:53:27" (1/1) ... [2018-07-22 02:53:28,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:53:27" (1/1) ... [2018-07-22 02:53:28,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:53:27" (1/1) ... [2018-07-22 02:53:28,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:53:27" (1/1) ... [2018-07-22 02:53:29,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:53:27" (1/1) ... [2018-07-22 02:53:29,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:53:27" (1/1) ... [2018-07-22 02:53:29,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:53:27" (1/1) ... [2018-07-22 02:53:29,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 02:53:29,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 02:53:29,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 02:53:29,651 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 02:53:29,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:53:27" (1/1) ... No working directory specified, using /storage/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 [2018-07-22 02:53:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 02:53:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 02:53:29,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 02:53:39,836 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 02:53:39,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:53:39 BoogieIcfgContainer [2018-07-22 02:53:39,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 02:53:39,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 02:53:39,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 02:53:39,850 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 02:53:39,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 02:53:24" (1/3) ... [2018-07-22 02:53:39,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d78b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:53:39, skipping insertion in model container [2018-07-22 02:53:39,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:53:27" (2/3) ... [2018-07-22 02:53:39,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d78b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:53:39, skipping insertion in model container [2018-07-22 02:53:39,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:53:39" (3/3) ... [2018-07-22 02:53:39,854 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label24_false-unreach-call.c [2018-07-22 02:53:39,862 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 02:53:39,870 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 02:53:39,945 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 02:53:39,946 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 02:53:39,946 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 02:53:39,946 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 02:53:39,946 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 02:53:39,946 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 02:53:39,947 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 02:53:39,947 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 02:53:39,947 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 02:53:39,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-07-22 02:53:39,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-22 02:53:39,988 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 02:53:39,989 INFO L358 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] [2018-07-22 02:53:39,990 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 02:53:39,995 INFO L82 PathProgramCache]: Analyzing trace with hash 808956810, now seen corresponding path program 1 times [2018-07-22 02:53:39,996 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 02:53:39,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 02:53:40,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:53:40,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 02:53:40,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:53:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 02:53:40,354 WARN L169 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-07-22 02:53:40,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 02:53:40,453 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 02:53:40,454 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 02:53:40,457 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 02:53:40,471 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 02:53:40,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 02:53:40,474 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-07-22 02:53:55,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 02:53:55,437 INFO L93 Difference]: Finished difference Result 3863 states and 7261 transitions. [2018-07-22 02:53:55,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 02:53:55,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-07-22 02:53:55,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 02:53:55,481 INFO L225 Difference]: With dead ends: 3863 [2018-07-22 02:53:55,481 INFO L226 Difference]: Without dead ends: 2757 [2018-07-22 02:53:55,494 INFO L578 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 [2018-07-22 02:53:55,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2018-07-22 02:53:55,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2736. [2018-07-22 02:53:55,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2018-07-22 02:53:55,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4486 transitions. [2018-07-22 02:53:55,681 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4486 transitions. Word has length 30 [2018-07-22 02:53:55,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 02:53:55,682 INFO L471 AbstractCegarLoop]: Abstraction has 2736 states and 4486 transitions. [2018-07-22 02:53:55,682 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 02:53:55,682 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4486 transitions. [2018-07-22 02:53:55,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-22 02:53:55,690 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 02:53:55,690 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 02:53:55,691 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 02:53:55,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1033901677, now seen corresponding path program 1 times [2018-07-22 02:53:55,691 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 02:53:55,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 02:53:55,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:53:55,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 02:53:55,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:53:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 02:53:57,058 WARN L169 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 26 [2018-07-22 02:53:57,163 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 02:53:57,163 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 02:53:57,164 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 02:53:57,166 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 02:53:57,166 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 02:53:57,166 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-22 02:53:57,166 INFO L87 Difference]: Start difference. First operand 2736 states and 4486 transitions. Second operand 5 states. [2018-07-22 02:54:10,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 02:54:10,298 INFO L93 Difference]: Finished difference Result 9430 states and 14930 transitions. [2018-07-22 02:54:10,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 02:54:10,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2018-07-22 02:54:10,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 02:54:10,332 INFO L225 Difference]: With dead ends: 9430 [2018-07-22 02:54:10,333 INFO L226 Difference]: Without dead ends: 6696 [2018-07-22 02:54:10,338 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-22 02:54:10,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6696 states. [2018-07-22 02:54:10,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6696 to 6695. [2018-07-22 02:54:10,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6695 states. [2018-07-22 02:54:10,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6695 states to 6695 states and 9408 transitions. [2018-07-22 02:54:10,516 INFO L78 Accepts]: Start accepts. Automaton has 6695 states and 9408 transitions. Word has length 117 [2018-07-22 02:54:10,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 02:54:10,517 INFO L471 AbstractCegarLoop]: Abstraction has 6695 states and 9408 transitions. [2018-07-22 02:54:10,517 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 02:54:10,517 INFO L276 IsEmpty]: Start isEmpty. Operand 6695 states and 9408 transitions. [2018-07-22 02:54:10,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-22 02:54:10,521 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 02:54:10,522 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 02:54:10,522 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 02:54:10,522 INFO L82 PathProgramCache]: Analyzing trace with hash -323945332, now seen corresponding path program 1 times [2018-07-22 02:54:10,522 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 02:54:10,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 02:54:10,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:54:10,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 02:54:10,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:54:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 02:54:11,004 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 02:54:11,005 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 02:54:11,005 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 02:54:11,006 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 02:54:11,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 02:54:11,006 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 02:54:11,006 INFO L87 Difference]: Start difference. First operand 6695 states and 9408 transitions. Second operand 5 states. [2018-07-22 02:54:27,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 02:54:27,819 INFO L93 Difference]: Finished difference Result 27875 states and 41070 transitions. [2018-07-22 02:54:27,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 02:54:27,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2018-07-22 02:54:27,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 02:54:27,901 INFO L225 Difference]: With dead ends: 27875 [2018-07-22 02:54:27,901 INFO L226 Difference]: Without dead ends: 21970 [2018-07-22 02:54:27,913 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 02:54:27,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21970 states. [2018-07-22 02:54:28,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21970 to 21813. [2018-07-22 02:54:28,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21813 states. [2018-07-22 02:54:28,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21813 states to 21813 states and 30048 transitions. [2018-07-22 02:54:28,556 INFO L78 Accepts]: Start accepts. Automaton has 21813 states and 30048 transitions. Word has length 127 [2018-07-22 02:54:28,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 02:54:28,558 INFO L471 AbstractCegarLoop]: Abstraction has 21813 states and 30048 transitions. [2018-07-22 02:54:28,558 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 02:54:28,558 INFO L276 IsEmpty]: Start isEmpty. Operand 21813 states and 30048 transitions. [2018-07-22 02:54:28,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-22 02:54:28,564 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 02:54:28,564 INFO L358 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 02:54:28,565 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 02:54:28,566 INFO L82 PathProgramCache]: Analyzing trace with hash 383453701, now seen corresponding path program 1 times [2018-07-22 02:54:28,566 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 02:54:28,566 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 02:54:28,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:54:28,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 02:54:28,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:54:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 02:54:29,011 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 55 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-22 02:54:29,011 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 02:54:29,011 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-22 02:54:29,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 02:54:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 02:54:29,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 02:54:29,192 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 02:54:29,225 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 02:54:29,225 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-07-22 02:54:29,226 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 02:54:29,226 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 02:54:29,226 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 02:54:29,226 INFO L87 Difference]: Start difference. First operand 21813 states and 30048 transitions. Second operand 4 states. [2018-07-22 02:54:40,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 02:54:40,405 INFO L93 Difference]: Finished difference Result 82299 states and 114754 transitions. [2018-07-22 02:54:40,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 02:54:40,406 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 199 [2018-07-22 02:54:40,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 02:54:40,535 INFO L225 Difference]: With dead ends: 82299 [2018-07-22 02:54:40,535 INFO L226 Difference]: Without dead ends: 61276 [2018-07-22 02:54:40,566 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 02:54:40,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61276 states. [2018-07-22 02:54:41,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61276 to 40724. [2018-07-22 02:54:41,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40724 states. [2018-07-22 02:54:41,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40724 states to 40724 states and 52745 transitions. [2018-07-22 02:54:41,685 INFO L78 Accepts]: Start accepts. Automaton has 40724 states and 52745 transitions. Word has length 199 [2018-07-22 02:54:41,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 02:54:41,687 INFO L471 AbstractCegarLoop]: Abstraction has 40724 states and 52745 transitions. [2018-07-22 02:54:41,687 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 02:54:41,687 INFO L276 IsEmpty]: Start isEmpty. Operand 40724 states and 52745 transitions. [2018-07-22 02:54:41,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-22 02:54:41,691 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 02:54:41,691 INFO L358 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 02:54:41,691 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 02:54:41,692 INFO L82 PathProgramCache]: Analyzing trace with hash -262206850, now seen corresponding path program 1 times [2018-07-22 02:54:41,692 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 02:54:41,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 02:54:41,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:54:41,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 02:54:41,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:54:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 02:54:41,952 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-07-22 02:54:41,954 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 02:54:41,954 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 02:54:41,954 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 02:54:41,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 02:54:41,955 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 02:54:41,955 INFO L87 Difference]: Start difference. First operand 40724 states and 52745 transitions. Second operand 3 states. [2018-07-22 02:54:49,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 02:54:49,823 INFO L93 Difference]: Finished difference Result 112958 states and 147099 transitions. [2018-07-22 02:54:49,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 02:54:49,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2018-07-22 02:54:49,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 02:54:49,934 INFO L225 Difference]: With dead ends: 112958 [2018-07-22 02:54:49,935 INFO L226 Difference]: Without dead ends: 73024 [2018-07-22 02:54:49,984 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 02:54:50,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73024 states. [2018-07-22 02:54:50,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73024 to 73021. [2018-07-22 02:54:50,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73021 states. [2018-07-22 02:54:50,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73021 states to 73021 states and 88143 transitions. [2018-07-22 02:54:50,818 INFO L78 Accepts]: Start accepts. Automaton has 73021 states and 88143 transitions. Word has length 200 [2018-07-22 02:54:50,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 02:54:50,819 INFO L471 AbstractCegarLoop]: Abstraction has 73021 states and 88143 transitions. [2018-07-22 02:54:50,819 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 02:54:50,819 INFO L276 IsEmpty]: Start isEmpty. Operand 73021 states and 88143 transitions. [2018-07-22 02:54:50,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-22 02:54:50,824 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 02:54:50,824 INFO L358 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 02:54:50,824 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 02:54:50,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1427650003, now seen corresponding path program 1 times [2018-07-22 02:54:50,825 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 02:54:50,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 02:54:50,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:54:50,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 02:54:50,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:54:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 02:54:51,481 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-07-22 02:54:51,482 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 02:54:51,482 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 02:54:51,482 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 02:54:51,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 02:54:51,482 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 02:54:51,483 INFO L87 Difference]: Start difference. First operand 73021 states and 88143 transitions. Second operand 3 states. [2018-07-22 02:54:56,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 02:54:56,485 INFO L93 Difference]: Finished difference Result 145250 states and 175490 transitions. [2018-07-22 02:54:56,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 02:54:56,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 244 [2018-07-22 02:54:56,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 02:54:56,580 INFO L225 Difference]: With dead ends: 145250 [2018-07-22 02:54:56,580 INFO L226 Difference]: Without dead ends: 73019 [2018-07-22 02:54:56,605 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 02:54:56,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73019 states. [2018-07-22 02:54:57,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73019 to 73018. [2018-07-22 02:54:57,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73018 states. [2018-07-22 02:54:57,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73018 states to 73018 states and 84285 transitions. [2018-07-22 02:54:57,239 INFO L78 Accepts]: Start accepts. Automaton has 73018 states and 84285 transitions. Word has length 244 [2018-07-22 02:54:57,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 02:54:57,240 INFO L471 AbstractCegarLoop]: Abstraction has 73018 states and 84285 transitions. [2018-07-22 02:54:57,240 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 02:54:57,240 INFO L276 IsEmpty]: Start isEmpty. Operand 73018 states and 84285 transitions. [2018-07-22 02:54:57,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-07-22 02:54:57,255 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 02:54:57,255 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 02:54:57,255 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 02:54:57,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1818653435, now seen corresponding path program 1 times [2018-07-22 02:54:57,256 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 02:54:57,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 02:54:57,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:54:57,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 02:54:57,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:54:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 02:54:57,574 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2018-07-22 02:54:57,574 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 02:54:57,574 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 02:54:57,575 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 02:54:57,576 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 02:54:57,576 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 02:54:57,576 INFO L87 Difference]: Start difference. First operand 73018 states and 84285 transitions. Second operand 3 states. [2018-07-22 02:55:05,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 02:55:05,698 INFO L93 Difference]: Finished difference Result 146802 states and 169425 transitions. [2018-07-22 02:55:05,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 02:55:05,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 363 [2018-07-22 02:55:05,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 02:55:05,773 INFO L225 Difference]: With dead ends: 146802 [2018-07-22 02:55:05,774 INFO L226 Difference]: Without dead ends: 74574 [2018-07-22 02:55:05,808 INFO L578 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 [2018-07-22 02:55:05,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74574 states. [2018-07-22 02:55:06,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74574 to 73782. [2018-07-22 02:55:06,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73782 states. [2018-07-22 02:55:06,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73782 states to 73782 states and 81544 transitions. [2018-07-22 02:55:06,465 INFO L78 Accepts]: Start accepts. Automaton has 73782 states and 81544 transitions. Word has length 363 [2018-07-22 02:55:06,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 02:55:06,465 INFO L471 AbstractCegarLoop]: Abstraction has 73782 states and 81544 transitions. [2018-07-22 02:55:06,465 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 02:55:06,466 INFO L276 IsEmpty]: Start isEmpty. Operand 73782 states and 81544 transitions. [2018-07-22 02:55:06,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2018-07-22 02:55:06,485 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 02:55:06,485 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 02:55:06,486 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 02:55:06,486 INFO L82 PathProgramCache]: Analyzing trace with hash -301872479, now seen corresponding path program 1 times [2018-07-22 02:55:06,486 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 02:55:06,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 02:55:06,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:55:06,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 02:55:06,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:55:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 02:55:07,305 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-07-22 02:55:07,306 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 02:55:07,306 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 02:55:07,306 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 02:55:07,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 02:55:07,307 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 02:55:07,307 INFO L87 Difference]: Start difference. First operand 73782 states and 81544 transitions. Second operand 4 states. [2018-07-22 02:55:15,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 02:55:15,487 INFO L93 Difference]: Finished difference Result 169661 states and 188418 transitions. [2018-07-22 02:55:15,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 02:55:15,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 417 [2018-07-22 02:55:15,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 02:55:15,567 INFO L225 Difference]: With dead ends: 169661 [2018-07-22 02:55:15,567 INFO L226 Difference]: Without dead ends: 93495 [2018-07-22 02:55:15,596 INFO L578 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 [2018-07-22 02:55:15,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93495 states. [2018-07-22 02:55:16,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93495 to 91878. [2018-07-22 02:55:16,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91878 states. [2018-07-22 02:55:16,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91878 states to 91878 states and 99557 transitions. [2018-07-22 02:55:16,307 INFO L78 Accepts]: Start accepts. Automaton has 91878 states and 99557 transitions. Word has length 417 [2018-07-22 02:55:16,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 02:55:16,307 INFO L471 AbstractCegarLoop]: Abstraction has 91878 states and 99557 transitions. [2018-07-22 02:55:16,307 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 02:55:16,307 INFO L276 IsEmpty]: Start isEmpty. Operand 91878 states and 99557 transitions. [2018-07-22 02:55:16,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2018-07-22 02:55:16,329 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 02:55:16,329 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 02:55:16,329 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 02:55:16,330 INFO L82 PathProgramCache]: Analyzing trace with hash -2113787859, now seen corresponding path program 1 times [2018-07-22 02:55:16,330 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 02:55:16,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 02:55:16,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:55:16,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 02:55:16,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:55:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 02:55:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 427 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-07-22 02:55:17,283 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 02:55:17,283 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 02:55:17,284 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 02:55:17,284 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 02:55:17,284 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 02:55:17,284 INFO L87 Difference]: Start difference. First operand 91878 states and 99557 transitions. Second operand 4 states. [2018-07-22 02:55:24,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 02:55:24,971 INFO L93 Difference]: Finished difference Result 204256 states and 221831 transitions. [2018-07-22 02:55:24,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 02:55:24,973 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 507 [2018-07-22 02:55:24,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 02:55:25,079 INFO L225 Difference]: With dead ends: 204256 [2018-07-22 02:55:25,079 INFO L226 Difference]: Without dead ends: 110001 [2018-07-22 02:55:25,114 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 02:55:25,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110001 states. [2018-07-22 02:55:25,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110001 to 109195. [2018-07-22 02:55:25,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109195 states. [2018-07-22 02:55:25,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109195 states to 109195 states and 116569 transitions. [2018-07-22 02:55:25,949 INFO L78 Accepts]: Start accepts. Automaton has 109195 states and 116569 transitions. Word has length 507 [2018-07-22 02:55:25,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 02:55:25,950 INFO L471 AbstractCegarLoop]: Abstraction has 109195 states and 116569 transitions. [2018-07-22 02:55:25,950 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 02:55:25,950 INFO L276 IsEmpty]: Start isEmpty. Operand 109195 states and 116569 transitions. [2018-07-22 02:55:25,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2018-07-22 02:55:25,967 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 02:55:25,968 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 02:55:25,968 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 02:55:25,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1752153724, now seen corresponding path program 1 times [2018-07-22 02:55:25,968 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 02:55:25,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 02:55:25,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:55:25,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 02:55:25,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:55:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 02:55:27,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 718 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-07-22 02:55:27,053 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 02:55:27,053 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 02:55:27,054 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 02:55:27,054 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 02:55:27,054 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 02:55:27,054 INFO L87 Difference]: Start difference. First operand 109195 states and 116569 transitions. Second operand 4 states. [2018-07-22 02:55:40,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 02:55:40,120 INFO L93 Difference]: Finished difference Result 272879 states and 291538 transitions. [2018-07-22 02:55:40,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 02:55:40,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 573 [2018-07-22 02:55:40,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 02:55:40,280 INFO L225 Difference]: With dead ends: 272879 [2018-07-22 02:55:40,280 INFO L226 Difference]: Without dead ends: 164474 [2018-07-22 02:55:40,329 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 02:55:40,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164474 states. [2018-07-22 02:55:42,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164474 to 162802. [2018-07-22 02:55:42,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162802 states. [2018-07-22 02:55:42,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162802 states to 162802 states and 173404 transitions. [2018-07-22 02:55:42,185 INFO L78 Accepts]: Start accepts. Automaton has 162802 states and 173404 transitions. Word has length 573 [2018-07-22 02:55:42,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 02:55:42,185 INFO L471 AbstractCegarLoop]: Abstraction has 162802 states and 173404 transitions. [2018-07-22 02:55:42,186 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 02:55:42,186 INFO L276 IsEmpty]: Start isEmpty. Operand 162802 states and 173404 transitions. [2018-07-22 02:55:42,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2018-07-22 02:55:42,205 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 02:55:42,205 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 02:55:42,205 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 02:55:42,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1496212539, now seen corresponding path program 1 times [2018-07-22 02:55:42,206 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 02:55:42,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 02:55:42,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:55:42,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 02:55:42,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:55:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 02:55:42,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 525 proven. 0 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2018-07-22 02:55:42,721 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 02:55:42,721 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 02:55:42,722 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 02:55:42,722 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 02:55:42,722 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 02:55:42,722 INFO L87 Difference]: Start difference. First operand 162802 states and 173404 transitions. Second operand 3 states. [2018-07-22 02:55:49,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 02:55:49,007 INFO L93 Difference]: Finished difference Result 324799 states and 345952 transitions. [2018-07-22 02:55:49,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 02:55:49,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 598 [2018-07-22 02:55:49,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 02:55:49,160 INFO L225 Difference]: With dead ends: 324799 [2018-07-22 02:55:49,160 INFO L226 Difference]: Without dead ends: 162785 [2018-07-22 02:55:49,224 INFO L578 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 [2018-07-22 02:55:49,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162785 states. [2018-07-22 02:55:51,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162785 to 161997. [2018-07-22 02:55:51,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161997 states. [2018-07-22 02:55:51,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161997 states to 161997 states and 172518 transitions. [2018-07-22 02:55:51,230 INFO L78 Accepts]: Start accepts. Automaton has 161997 states and 172518 transitions. Word has length 598 [2018-07-22 02:55:51,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 02:55:51,230 INFO L471 AbstractCegarLoop]: Abstraction has 161997 states and 172518 transitions. [2018-07-22 02:55:51,230 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 02:55:51,230 INFO L276 IsEmpty]: Start isEmpty. Operand 161997 states and 172518 transitions. [2018-07-22 02:55:51,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2018-07-22 02:55:51,245 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 02:55:51,245 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 02:55:51,245 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 02:55:51,246 INFO L82 PathProgramCache]: Analyzing trace with hash 990396253, now seen corresponding path program 1 times [2018-07-22 02:55:51,246 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 02:55:51,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 02:55:51,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:55:51,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 02:55:51,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:55:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 02:55:52,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2018-07-22 02:55:52,298 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 02:55:52,298 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 02:55:52,298 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 02:55:52,298 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 02:55:52,298 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 02:55:52,299 INFO L87 Difference]: Start difference. First operand 161997 states and 172518 transitions. Second operand 3 states. [2018-07-22 02:56:00,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 02:56:00,690 INFO L93 Difference]: Finished difference Result 409880 states and 436091 transitions. [2018-07-22 02:56:00,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 02:56:00,690 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 603 [2018-07-22 02:56:00,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 02:56:00,939 INFO L225 Difference]: With dead ends: 409880 [2018-07-22 02:56:00,940 INFO L226 Difference]: Without dead ends: 248673 [2018-07-22 02:56:01,010 INFO L578 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 [2018-07-22 02:56:01,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248673 states. [2018-07-22 02:56:09,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248673 to 239209. [2018-07-22 02:56:09,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239209 states. [2018-07-22 02:56:10,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239209 states to 239209 states and 251993 transitions. [2018-07-22 02:56:10,041 INFO L78 Accepts]: Start accepts. Automaton has 239209 states and 251993 transitions. Word has length 603 [2018-07-22 02:56:10,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 02:56:10,042 INFO L471 AbstractCegarLoop]: Abstraction has 239209 states and 251993 transitions. [2018-07-22 02:56:10,042 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 02:56:10,043 INFO L276 IsEmpty]: Start isEmpty. Operand 239209 states and 251993 transitions. [2018-07-22 02:56:10,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2018-07-22 02:56:10,076 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 02:56:10,076 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 02:56:10,076 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 02:56:10,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1645143690, now seen corresponding path program 1 times [2018-07-22 02:56:10,077 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 02:56:10,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 02:56:10,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:56:10,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 02:56:10,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:56:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 02:56:10,639 WARN L169 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-07-22 02:56:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 719 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-07-22 02:56:11,863 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 02:56:11,863 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 02:56:11,864 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 02:56:11,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 02:56:11,864 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 02:56:11,864 INFO L87 Difference]: Start difference. First operand 239209 states and 251993 transitions. Second operand 4 states. [2018-07-22 02:56:19,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 02:56:19,977 INFO L93 Difference]: Finished difference Result 487873 states and 513820 transitions. [2018-07-22 02:56:19,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 02:56:19,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 638 [2018-07-22 02:56:19,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 02:56:20,199 INFO L225 Difference]: With dead ends: 487873 [2018-07-22 02:56:20,199 INFO L226 Difference]: Without dead ends: 220242 [2018-07-22 02:56:20,281 INFO L578 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 [2018-07-22 02:56:20,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220242 states. [2018-07-22 02:56:28,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220242 to 206050. [2018-07-22 02:56:28,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206050 states. [2018-07-22 02:56:28,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206050 states to 206050 states and 216716 transitions. [2018-07-22 02:56:28,828 INFO L78 Accepts]: Start accepts. Automaton has 206050 states and 216716 transitions. Word has length 638 [2018-07-22 02:56:28,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 02:56:28,828 INFO L471 AbstractCegarLoop]: Abstraction has 206050 states and 216716 transitions. [2018-07-22 02:56:28,828 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 02:56:28,828 INFO L276 IsEmpty]: Start isEmpty. Operand 206050 states and 216716 transitions. [2018-07-22 02:56:28,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2018-07-22 02:56:28,860 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 02:56:28,861 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 02:56:28,861 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 02:56:28,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1425581683, now seen corresponding path program 1 times [2018-07-22 02:56:28,861 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 02:56:28,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 02:56:28,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:56:28,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 02:56:28,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:56:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 02:56:29,533 WARN L169 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-07-22 02:56:30,455 WARN L169 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 27 [2018-07-22 02:56:31,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 744 proven. 132 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2018-07-22 02:56:31,823 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 02:56:31,823 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-22 02:56:31,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 02:56:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 02:56:32,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 02:56:35,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 929 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2018-07-22 02:56:35,751 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 02:56:35,751 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-07-22 02:56:35,752 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-22 02:56:35,752 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-22 02:56:35,752 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-07-22 02:56:35,753 INFO L87 Difference]: Start difference. First operand 206050 states and 216716 transitions. Second operand 7 states. [2018-07-22 02:56:48,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 02:56:48,835 INFO L93 Difference]: Finished difference Result 453876 states and 477086 transitions. [2018-07-22 02:56:48,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-22 02:56:48,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 699 [2018-07-22 02:56:48,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 02:56:49,075 INFO L225 Difference]: With dead ends: 453876 [2018-07-22 02:56:49,075 INFO L226 Difference]: Without dead ends: 248616 [2018-07-22 02:56:49,141 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 701 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-07-22 02:56:49,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248616 states. [2018-07-22 02:56:51,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248616 to 223380. [2018-07-22 02:56:51,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223380 states. [2018-07-22 02:56:51,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223380 states to 223380 states and 234258 transitions. [2018-07-22 02:56:51,755 INFO L78 Accepts]: Start accepts. Automaton has 223380 states and 234258 transitions. Word has length 699 [2018-07-22 02:56:51,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 02:56:51,755 INFO L471 AbstractCegarLoop]: Abstraction has 223380 states and 234258 transitions. [2018-07-22 02:56:51,755 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-22 02:56:51,756 INFO L276 IsEmpty]: Start isEmpty. Operand 223380 states and 234258 transitions. [2018-07-22 02:56:51,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2018-07-22 02:56:51,778 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 02:56:51,779 INFO L358 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 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] [2018-07-22 02:56:51,779 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 02:56:51,779 INFO L82 PathProgramCache]: Analyzing trace with hash 527952713, now seen corresponding path program 1 times [2018-07-22 02:56:51,779 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 02:56:51,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 02:56:51,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:56:51,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 02:56:51,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 02:56:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 02:56:52,481 WARN L169 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-07-22 02:56:53,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1634 backedges. 1175 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2018-07-22 02:56:53,610 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 02:56:53,610 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 02:56:53,614 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 02:56:53,614 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 02:56:53,614 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 02:56:53,614 INFO L87 Difference]: Start difference. First operand 223380 states and 234258 transitions. Second operand 4 states. Received shutdown request... [2018-07-22 02:56:56,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 02:56:56,798 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-22 02:56:56,803 WARN L202 ceAbstractionStarter]: Timeout [2018-07-22 02:56:56,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 02:56:56 BoogieIcfgContainer [2018-07-22 02:56:56,804 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-22 02:56:56,805 INFO L168 Benchmark]: Toolchain (without parser) took 212745.69 ms. Allocated memory was 306.7 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 234.2 MB in the beginning and 2.0 GB in the end (delta: -1.8 GB). Peak memory consumption was 460.7 MB. Max. memory is 5.3 GB. [2018-07-22 02:56:56,806 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 306.7 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-22 02:56:56,806 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3188.40 ms. Allocated memory was 306.7 MB in the beginning and 387.4 MB in the end (delta: 80.7 MB). Free memory was 234.2 MB in the beginning and 200.1 MB in the end (delta: 34.2 MB). Peak memory consumption was 114.9 MB. Max. memory is 5.3 GB. [2018-07-22 02:56:56,807 INFO L168 Benchmark]: Boogie Procedure Inliner took 767.11 ms. Allocated memory was 387.4 MB in the beginning and 390.6 MB in the end (delta: 3.1 MB). Free memory was 200.1 MB in the beginning and 196.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 115.7 MB. Max. memory is 5.3 GB. [2018-07-22 02:56:56,807 INFO L168 Benchmark]: Boogie Preprocessor took 1627.16 ms. Allocated memory was 390.6 MB in the beginning and 684.7 MB in the end (delta: 294.1 MB). Free memory was 196.1 MB in the beginning and 492.0 MB in the end (delta: -295.9 MB). Peak memory consumption was 73.9 MB. Max. memory is 5.3 GB. [2018-07-22 02:56:56,808 INFO L168 Benchmark]: RCFGBuilder took 10186.72 ms. Allocated memory was 684.7 MB in the beginning and 965.2 MB in the end (delta: 280.5 MB). Free memory was 492.0 MB in the beginning and 562.4 MB in the end (delta: -70.4 MB). Peak memory consumption was 327.0 MB. Max. memory is 5.3 GB. [2018-07-22 02:56:56,808 INFO L168 Benchmark]: TraceAbstraction took 196966.04 ms. Allocated memory was 965.2 MB in the beginning and 2.5 GB in the end (delta: 1.6 GB). Free memory was 562.4 MB in the beginning and 2.0 GB in the end (delta: -1.4 GB). Peak memory consumption was 130.4 MB. Max. memory is 5.3 GB. [2018-07-22 02:56:56,813 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 306.7 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 3188.40 ms. Allocated memory was 306.7 MB in the beginning and 387.4 MB in the end (delta: 80.7 MB). Free memory was 234.2 MB in the beginning and 200.1 MB in the end (delta: 34.2 MB). Peak memory consumption was 114.9 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 767.11 ms. Allocated memory was 387.4 MB in the beginning and 390.6 MB in the end (delta: 3.1 MB). Free memory was 200.1 MB in the beginning and 196.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 115.7 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 1627.16 ms. Allocated memory was 390.6 MB in the beginning and 684.7 MB in the end (delta: 294.1 MB). Free memory was 196.1 MB in the beginning and 492.0 MB in the end (delta: -295.9 MB). Peak memory consumption was 73.9 MB. Max. memory is 5.3 GB. * RCFGBuilder took 10186.72 ms. Allocated memory was 684.7 MB in the beginning and 965.2 MB in the end (delta: 280.5 MB). Free memory was 492.0 MB in the beginning and 562.4 MB in the end (delta: -70.4 MB). Peak memory consumption was 327.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 196966.04 ms. Allocated memory was 965.2 MB in the beginning and 2.5 GB in the end (delta: 1.6 GB). Free memory was 562.4 MB in the beginning and 2.0 GB in the end (delta: -1.4 GB). Peak memory consumption was 130.4 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 99). Cancelled while BasicCegarLoop was constructing difference of abstraction (223380states) and interpolant automaton (currently 4 states, 4 states before enhancement), while ReachableStatesComputation was computing reachable states (1933 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 196.8s OverallTime, 15 OverallIterations, 7 TraceHistogramMax, 147.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11508 SDtfs, 31985 SDslu, 3460 SDs, 0 SdLazy, 64553 SolverSat, 15588 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 120.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 967 GetRequests, 921 SyntacticMatches, 12 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239209occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 29.8s AutomataMinimizationTime, 14 MinimizatonAttempts, 75302 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 11.9s InterpolantComputationTime, 6940 NumberOfCodeBlocks, 6940 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 6923 ConstructedInterpolants, 0 QuantifiedInterpolants, 9786548 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1168 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 17 InterpolantComputations, 15 PerfectInterpolantSequences, 10269/10405 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/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem13_label24_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-22_02-56-56-829.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem13_label24_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-22_02-56-56-829.csv Completed graceful shutdown