java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label13_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:57:59,052 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:57:59,057 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:57:59,075 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:57:59,075 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:57:59,076 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:57:59,077 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:57:59,080 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:57:59,082 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:57:59,083 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:57:59,084 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:57:59,086 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:57:59,087 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:57:59,088 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:57:59,092 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:57:59,092 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:57:59,093 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:57:59,104 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:57:59,106 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:57:59,110 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:57:59,111 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:57:59,112 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:57:59,117 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 21:57:59,117 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 21:57:59,117 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 21:57:59,119 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 21:57:59,120 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 21:57:59,124 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 21:57:59,125 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 21:57:59,126 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 21:57:59,126 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 21:57:59,129 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 21:57:59,131 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 21:57:59,157 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:57:59,157 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:57:59,159 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:57:59,159 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:57:59,159 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:57:59,160 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:57:59,160 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:57:59,160 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:57:59,160 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:57:59,160 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:57:59,161 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:57:59,161 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:57:59,161 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:57:59,162 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:57:59,162 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:57:59,162 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:57:59,162 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:57:59,162 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:57:59,163 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:57:59,164 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:57:59,164 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:57:59,164 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:57:59,164 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:57:59,164 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:57:59,165 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:57:59,165 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:57:59,165 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:57:59,165 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:57:59,217 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:57:59,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:57:59,239 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:57:59,240 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:57:59,241 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:57:59,242 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label13_true-unreach-call.c [2018-11-06 21:57:59,304 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0b47ffba/9a7736c192dd49848573ea1b5b442c53/FLAG1fb27ed08 [2018-11-06 21:58:00,215 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:58:00,216 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label13_true-unreach-call.c [2018-11-06 21:58:00,266 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0b47ffba/9a7736c192dd49848573ea1b5b442c53/FLAG1fb27ed08 [2018-11-06 21:58:00,285 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0b47ffba/9a7736c192dd49848573ea1b5b442c53 [2018-11-06 21:58:00,297 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:58:00,299 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:58:00,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:58:00,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:58:00,304 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:58:00,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:00" (1/1) ... [2018-11-06 21:58:00,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ec1c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:00, skipping insertion in model container [2018-11-06 21:58:00,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:00" (1/1) ... [2018-11-06 21:58:00,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:58:00,573 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:58:02,501 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:58:02,506 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:58:03,504 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:58:03,558 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:58:03,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:03 WrapperNode [2018-11-06 21:58:03,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:58:03,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:58:03,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:58:03,561 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:58:03,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:03" (1/1) ... [2018-11-06 21:58:04,062 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:03" (1/1) ... [2018-11-06 21:58:04,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:58:04,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:58:04,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:58:04,590 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:58:04,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:03" (1/1) ... [2018-11-06 21:58:04,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:03" (1/1) ... [2018-11-06 21:58:04,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:03" (1/1) ... [2018-11-06 21:58:04,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:03" (1/1) ... [2018-11-06 21:58:04,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:03" (1/1) ... [2018-11-06 21:58:04,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:03" (1/1) ... [2018-11-06 21:58:05,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:03" (1/1) ... [2018-11-06 21:58:05,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:58:05,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:58:05,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:58:05,286 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:58:05,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:58:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:58:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:58:05,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:58:21,717 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:58:21,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:21 BoogieIcfgContainer [2018-11-06 21:58:21,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:58:21,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:58:21,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:58:21,722 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:58:21,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:58:00" (1/3) ... [2018-11-06 21:58:21,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41de2ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:21, skipping insertion in model container [2018-11-06 21:58:21,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:03" (2/3) ... [2018-11-06 21:58:21,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41de2ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:21, skipping insertion in model container [2018-11-06 21:58:21,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:21" (3/3) ... [2018-11-06 21:58:21,726 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label13_true-unreach-call.c [2018-11-06 21:58:21,736 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:58:21,747 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:58:21,765 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:58:21,815 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:58:21,816 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:58:21,816 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:58:21,817 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:58:21,817 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:58:21,817 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:58:21,817 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:58:21,817 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:58:21,817 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:58:21,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-11-06 21:58:21,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-06 21:58:21,874 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:58:21,875 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:58:21,877 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:58:21,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:58:21,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1502078046, now seen corresponding path program 1 times [2018-11-06 21:58:21,887 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:58:21,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:58:21,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:58:21,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:58:21,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:58:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:58:22,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:58:22,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:58:22,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:58:22,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:58:22,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:58:22,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:58:22,371 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-11-06 21:58:42,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:58:42,284 INFO L93 Difference]: Finished difference Result 6431 states and 12286 transitions. [2018-11-06 21:58:42,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:58:42,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-11-06 21:58:42,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:58:42,361 INFO L225 Difference]: With dead ends: 6431 [2018-11-06 21:58:42,361 INFO L226 Difference]: Without dead ends: 4675 [2018-11-06 21:58:42,370 INFO L604 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 [2018-11-06 21:58:42,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4675 states. [2018-11-06 21:58:42,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4675 to 4581. [2018-11-06 21:58:42,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4581 states. [2018-11-06 21:58:42,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 7890 transitions. [2018-11-06 21:58:42,595 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 7890 transitions. Word has length 36 [2018-11-06 21:58:42,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:58:42,596 INFO L480 AbstractCegarLoop]: Abstraction has 4581 states and 7890 transitions. [2018-11-06 21:58:42,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:58:42,596 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 7890 transitions. [2018-11-06 21:58:42,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-11-06 21:58:42,603 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:58:42,603 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:58:42,607 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:58:42,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:58:42,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1744428717, now seen corresponding path program 1 times [2018-11-06 21:58:42,608 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:58:42,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:58:42,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:58:42,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:58:42,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:58:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:58:43,639 WARN L179 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 23 [2018-11-06 21:58:43,987 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:58:43,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:58:43,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 21:58:43,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 21:58:43,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 21:58:43,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:58:43,992 INFO L87 Difference]: Start difference. First operand 4581 states and 7890 transitions. Second operand 6 states. [2018-11-06 21:58:44,178 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-06 21:59:10,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:59:10,884 INFO L93 Difference]: Finished difference Result 17384 states and 28714 transitions. [2018-11-06 21:59:10,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 21:59:10,886 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2018-11-06 21:59:10,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:59:10,940 INFO L225 Difference]: With dead ends: 17384 [2018-11-06 21:59:10,940 INFO L226 Difference]: Without dead ends: 12805 [2018-11-06 21:59:10,948 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:59:10,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12805 states. [2018-11-06 21:59:11,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12805 to 11430. [2018-11-06 21:59:11,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11430 states. [2018-11-06 21:59:11,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11430 states to 11430 states and 17329 transitions. [2018-11-06 21:59:11,175 INFO L78 Accepts]: Start accepts. Automaton has 11430 states and 17329 transitions. Word has length 108 [2018-11-06 21:59:11,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:59:11,176 INFO L480 AbstractCegarLoop]: Abstraction has 11430 states and 17329 transitions. [2018-11-06 21:59:11,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 21:59:11,177 INFO L276 IsEmpty]: Start isEmpty. Operand 11430 states and 17329 transitions. [2018-11-06 21:59:11,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-11-06 21:59:11,186 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:59:11,187 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:59:11,187 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:59:11,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:59:11,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1579920259, now seen corresponding path program 1 times [2018-11-06 21:59:11,188 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:59:11,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:59:11,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:59:11,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:59:11,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:59:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:59:12,170 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-11-06 21:59:12,170 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:59:12,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 21:59:12,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:59:12,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:59:12,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:59:12,172 INFO L87 Difference]: Start difference. First operand 11430 states and 17329 transitions. Second operand 7 states. [2018-11-06 21:59:43,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:59:43,875 INFO L93 Difference]: Finished difference Result 35166 states and 54823 transitions. [2018-11-06 21:59:43,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 21:59:43,876 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 322 [2018-11-06 21:59:43,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:59:43,948 INFO L225 Difference]: With dead ends: 35166 [2018-11-06 21:59:43,948 INFO L226 Difference]: Without dead ends: 23738 [2018-11-06 21:59:43,963 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-11-06 21:59:43,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23738 states. [2018-11-06 21:59:44,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23738 to 19636. [2018-11-06 21:59:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19636 states. [2018-11-06 21:59:44,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19636 states to 19636 states and 26064 transitions. [2018-11-06 21:59:44,392 INFO L78 Accepts]: Start accepts. Automaton has 19636 states and 26064 transitions. Word has length 322 [2018-11-06 21:59:44,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:59:44,393 INFO L480 AbstractCegarLoop]: Abstraction has 19636 states and 26064 transitions. [2018-11-06 21:59:44,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 21:59:44,393 INFO L276 IsEmpty]: Start isEmpty. Operand 19636 states and 26064 transitions. [2018-11-06 21:59:44,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-11-06 21:59:44,402 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:59:44,402 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:59:44,403 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:59:44,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:59:44,403 INFO L82 PathProgramCache]: Analyzing trace with hash 688101527, now seen corresponding path program 1 times [2018-11-06 21:59:44,404 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:59:44,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:59:44,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:59:44,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:59:44,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:59:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:59:45,021 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 67 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-06 21:59:45,021 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:59:45,021 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:59:45,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:59:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:59:45,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:59:45,331 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:59:45,362 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:59:45,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 21:59:45,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:59:45,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:59:45,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:59:45,365 INFO L87 Difference]: Start difference. First operand 19636 states and 26064 transitions. Second operand 4 states. [2018-11-06 22:00:05,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:00:05,241 INFO L93 Difference]: Finished difference Result 68184 states and 93591 transitions. [2018-11-06 22:00:05,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:00:05,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 350 [2018-11-06 22:00:05,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:00:05,344 INFO L225 Difference]: With dead ends: 68184 [2018-11-06 22:00:05,344 INFO L226 Difference]: Without dead ends: 49916 [2018-11-06 22:00:05,372 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:00:05,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49916 states. [2018-11-06 22:00:06,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49916 to 31922. [2018-11-06 22:00:06,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31922 states. [2018-11-06 22:00:06,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31922 states to 31922 states and 43418 transitions. [2018-11-06 22:00:06,084 INFO L78 Accepts]: Start accepts. Automaton has 31922 states and 43418 transitions. Word has length 350 [2018-11-06 22:00:06,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:00:06,086 INFO L480 AbstractCegarLoop]: Abstraction has 31922 states and 43418 transitions. [2018-11-06 22:00:06,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:00:06,086 INFO L276 IsEmpty]: Start isEmpty. Operand 31922 states and 43418 transitions. [2018-11-06 22:00:06,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-11-06 22:00:06,095 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:00:06,095 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:00:06,096 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:00:06,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:00:06,096 INFO L82 PathProgramCache]: Analyzing trace with hash -683855534, now seen corresponding path program 1 times [2018-11-06 22:00:06,097 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:00:06,097 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:00:06,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:00:06,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:00:06,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:00:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:00:06,736 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 67 proven. 65 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-11-06 22:00:06,737 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:00:06,737 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:00:06,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:00:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:00:06,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:00:07,457 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:00:07,489 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:00:07,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-11-06 22:00:07,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 22:00:07,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 22:00:07,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:00:07,491 INFO L87 Difference]: Start difference. First operand 31922 states and 43418 transitions. Second operand 5 states. [2018-11-06 22:00:37,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:00:37,451 INFO L93 Difference]: Finished difference Result 133872 states and 192096 transitions. [2018-11-06 22:00:37,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 22:00:37,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 395 [2018-11-06 22:00:37,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:00:37,645 INFO L225 Difference]: With dead ends: 133872 [2018-11-06 22:00:37,645 INFO L226 Difference]: Without dead ends: 97852 [2018-11-06 22:00:37,705 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 22:00:37,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97852 states. [2018-11-06 22:00:38,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97852 to 95031. [2018-11-06 22:00:38,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95031 states. [2018-11-06 22:00:38,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95031 states to 95031 states and 117721 transitions. [2018-11-06 22:00:38,930 INFO L78 Accepts]: Start accepts. Automaton has 95031 states and 117721 transitions. Word has length 395 [2018-11-06 22:00:38,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:00:38,931 INFO L480 AbstractCegarLoop]: Abstraction has 95031 states and 117721 transitions. [2018-11-06 22:00:38,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 22:00:38,932 INFO L276 IsEmpty]: Start isEmpty. Operand 95031 states and 117721 transitions. [2018-11-06 22:00:38,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2018-11-06 22:00:38,944 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:00:38,944 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 22:00:38,945 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:00:38,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:00:38,945 INFO L82 PathProgramCache]: Analyzing trace with hash 221221852, now seen corresponding path program 1 times [2018-11-06 22:00:38,945 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:00:38,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:00:38,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:00:38,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:00:38,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:00:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:00:40,042 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-11-06 22:00:40,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:00:40,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:00:40,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:00:40,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:00:40,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:00:40,044 INFO L87 Difference]: Start difference. First operand 95031 states and 117721 transitions. Second operand 4 states. [2018-11-06 22:00:56,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:00:56,221 INFO L93 Difference]: Finished difference Result 259736 states and 324302 transitions. [2018-11-06 22:00:56,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:00:56,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 492 [2018-11-06 22:00:56,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:00:56,404 INFO L225 Difference]: With dead ends: 259736 [2018-11-06 22:00:56,405 INFO L226 Difference]: Without dead ends: 157846 [2018-11-06 22:00:56,459 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:00:56,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157846 states. [2018-11-06 22:00:57,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157846 to 157834. [2018-11-06 22:00:57,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157834 states. [2018-11-06 22:00:57,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157834 states to 157834 states and 187231 transitions. [2018-11-06 22:00:57,969 INFO L78 Accepts]: Start accepts. Automaton has 157834 states and 187231 transitions. Word has length 492 [2018-11-06 22:00:57,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:00:57,970 INFO L480 AbstractCegarLoop]: Abstraction has 157834 states and 187231 transitions. [2018-11-06 22:00:57,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:00:57,971 INFO L276 IsEmpty]: Start isEmpty. Operand 157834 states and 187231 transitions. [2018-11-06 22:00:58,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2018-11-06 22:00:58,001 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:00:58,002 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 22:00:58,002 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:00:58,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:00:58,002 INFO L82 PathProgramCache]: Analyzing trace with hash -292757731, now seen corresponding path program 1 times [2018-11-06 22:00:58,003 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:00:58,003 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:00:58,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:00:58,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:00:58,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:00:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:00:58,656 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 742 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-11-06 22:00:58,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:00:58,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:00:58,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:00:58,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:00:58,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:00:58,658 INFO L87 Difference]: Start difference. First operand 157834 states and 187231 transitions. Second operand 4 states. [2018-11-06 22:01:12,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:01:12,687 INFO L93 Difference]: Finished difference Result 337521 states and 401412 transitions. [2018-11-06 22:01:12,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:01:12,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 728 [2018-11-06 22:01:12,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:01:12,884 INFO L225 Difference]: With dead ends: 337521 [2018-11-06 22:01:12,884 INFO L226 Difference]: Without dead ends: 176950 [2018-11-06 22:01:12,977 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:01:13,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176950 states. [2018-11-06 22:01:15,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176950 to 175575. [2018-11-06 22:01:15,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175575 states. [2018-11-06 22:01:15,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175575 states to 175575 states and 198119 transitions. [2018-11-06 22:01:15,302 INFO L78 Accepts]: Start accepts. Automaton has 175575 states and 198119 transitions. Word has length 728 [2018-11-06 22:01:15,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:01:15,303 INFO L480 AbstractCegarLoop]: Abstraction has 175575 states and 198119 transitions. [2018-11-06 22:01:15,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:01:15,303 INFO L276 IsEmpty]: Start isEmpty. Operand 175575 states and 198119 transitions. [2018-11-06 22:01:15,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2018-11-06 22:01:15,314 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:01:15,315 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:01:15,315 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:01:15,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:01:15,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1215015212, now seen corresponding path program 1 times [2018-11-06 22:01:15,316 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:01:15,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:01:15,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:15,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:01:15,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:01:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 291 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-06 22:01:17,835 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:01:17,835 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:01:17,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:01:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:01:18,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:01:18,476 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-06 22:01:18,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:01:18,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-06 22:01:18,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 22:01:18,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 22:01:18,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:01:18,498 INFO L87 Difference]: Start difference. First operand 175575 states and 198119 transitions. Second operand 5 states. [2018-11-06 22:01:38,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:01:38,174 INFO L93 Difference]: Finished difference Result 378471 states and 425727 transitions. [2018-11-06 22:01:38,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 22:01:38,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 887 [2018-11-06 22:01:38,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:01:38,412 INFO L225 Difference]: With dead ends: 378471 [2018-11-06 22:01:38,412 INFO L226 Difference]: Without dead ends: 190591 [2018-11-06 22:01:38,514 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 887 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 22:01:38,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190591 states. [2018-11-06 22:01:40,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190591 to 189223. [2018-11-06 22:01:40,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189223 states. [2018-11-06 22:01:42,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189223 states to 189223 states and 203244 transitions. [2018-11-06 22:01:42,192 INFO L78 Accepts]: Start accepts. Automaton has 189223 states and 203244 transitions. Word has length 887 [2018-11-06 22:01:42,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:01:42,193 INFO L480 AbstractCegarLoop]: Abstraction has 189223 states and 203244 transitions. [2018-11-06 22:01:42,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 22:01:42,193 INFO L276 IsEmpty]: Start isEmpty. Operand 189223 states and 203244 transitions. [2018-11-06 22:01:42,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1102 [2018-11-06 22:01:42,216 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:01:42,217 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:01:42,218 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:01:42,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:01:42,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1044246524, now seen corresponding path program 1 times [2018-11-06 22:01:42,219 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:01:42,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:01:42,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:42,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:01:42,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:01:44,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1202 backedges. 958 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2018-11-06 22:01:44,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:01:44,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 22:01:44,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 22:01:44,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 22:01:44,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:01:44,819 INFO L87 Difference]: Start difference. First operand 189223 states and 203244 transitions. Second operand 5 states. Received shutdown request... [2018-11-06 22:01:49,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:01:49,628 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 22:01:49,633 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 22:01:49,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:01:49 BoogieIcfgContainer [2018-11-06 22:01:49,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 22:01:49,634 INFO L168 Benchmark]: Toolchain (without parser) took 229336.73 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -491.6 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-06 22:01:49,635 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 22:01:49,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3260.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. [2018-11-06 22:01:49,637 INFO L168 Benchmark]: Boogie Procedure Inliner took 1028.79 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 867.7 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 109.5 MB. Max. memory is 7.1 GB. [2018-11-06 22:01:49,638 INFO L168 Benchmark]: Boogie Preprocessor took 696.05 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 110.1 MB). Peak memory consumption was 110.1 MB. Max. memory is 7.1 GB. [2018-11-06 22:01:49,639 INFO L168 Benchmark]: RCFGBuilder took 16432.16 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 303.6 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -373.5 MB). Peak memory consumption was 819.1 MB. Max. memory is 7.1 GB. [2018-11-06 22:01:49,640 INFO L168 Benchmark]: TraceAbstraction took 207914.82 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 791.7 MB). Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 521.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-06 22:01:49,645 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3260.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1028.79 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 867.7 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 109.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 696.05 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 110.1 MB). Peak memory consumption was 110.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16432.16 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 303.6 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -373.5 MB). Peak memory consumption was 819.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207914.82 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 791.7 MB). Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 521.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 121). Cancelled while BasicCegarLoop was constructing difference of abstraction (189223states) and FLOYD_HOARE automaton (currently 4 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (5281 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 207.8s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 184.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10644 SDtfs, 46690 SDslu, 4438 SDs, 0 SdLazy, 99484 SolverSat, 25132 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 148.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1692 GetRequests, 1643 SyntacticMatches, 15 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=189223occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 10.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 29141 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 6051 NumberOfCodeBlocks, 6051 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 6039 ConstructedInterpolants, 0 QuantifiedInterpolants, 12374585 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1908 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 3747/3820 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown