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/Problem17_label31_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:29:52,829 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:29:52,831 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:29:52,844 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:29:52,844 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:29:52,845 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:29:52,846 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:29:52,848 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:29:52,850 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:29:52,850 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:29:52,851 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:29:52,852 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:29:52,853 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:29:52,854 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:29:52,858 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:29:52,859 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:29:52,860 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:29:52,868 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:29:52,872 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:29:52,874 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:29:52,877 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:29:52,882 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:29:52,886 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 19:29:52,900 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 19:29:52,927 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:29:52,928 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:29:52,929 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:29:52,930 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:29:52,931 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:29:52,931 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:29:52,931 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:29:52,931 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:29:52,931 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:29:52,933 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:29:52,933 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:29:52,933 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:29:52,933 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:29:52,934 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:29:52,934 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:29:52,934 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:29:52,934 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:29:52,934 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:29:52,935 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:29:52,935 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:29:52,935 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:29:52,935 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:29:52,935 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:29:52,936 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:29:52,936 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:29:52,936 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:29:52,936 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:29:52,936 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:29:52,990 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:29:53,009 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:29:53,013 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:29:53,015 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:29:53,015 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:29:53,016 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label31_false-unreach-call.c [2018-11-06 19:29:53,081 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdb11802f/1730d90b05434cc68f079eaec1e15c61/FLAGca19666b7 [2018-11-06 19:29:53,783 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:29:53,784 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label31_false-unreach-call.c [2018-11-06 19:29:53,818 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdb11802f/1730d90b05434cc68f079eaec1e15c61/FLAGca19666b7 [2018-11-06 19:29:53,839 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdb11802f/1730d90b05434cc68f079eaec1e15c61 [2018-11-06 19:29:53,853 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:29:53,855 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:29:53,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:29:53,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:29:53,860 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:29:53,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:29:53" (1/1) ... [2018-11-06 19:29:53,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63590d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:53, skipping insertion in model container [2018-11-06 19:29:53,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:29:53" (1/1) ... [2018-11-06 19:29:53,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:29:54,008 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:29:54,998 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:29:55,003 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:29:55,387 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:29:55,410 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:29:55,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:55 WrapperNode [2018-11-06 19:29:55,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:29:55,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:29:55,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:29:55,412 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:29:55,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:55" (1/1) ... [2018-11-06 19:29:55,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:55" (1/1) ... [2018-11-06 19:29:55,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:29:55,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:29:55,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:29:55,928 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:29:55,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:55" (1/1) ... [2018-11-06 19:29:55,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:55" (1/1) ... [2018-11-06 19:29:55,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:55" (1/1) ... [2018-11-06 19:29:55,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:55" (1/1) ... [2018-11-06 19:29:56,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:55" (1/1) ... [2018-11-06 19:29:56,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:55" (1/1) ... [2018-11-06 19:29:56,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:55" (1/1) ... [2018-11-06 19:29:56,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:29:56,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:29:56,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:29:56,303 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:29:56,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:55" (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 19:29:56,374 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:29:56,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:29:56,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:30:04,388 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:30:04,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:30:04 BoogieIcfgContainer [2018-11-06 19:30:04,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:30:04,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:30:04,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:30:04,394 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:30:04,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:29:53" (1/3) ... [2018-11-06 19:30:04,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b880cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:30:04, skipping insertion in model container [2018-11-06 19:30:04,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:55" (2/3) ... [2018-11-06 19:30:04,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b880cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:30:04, skipping insertion in model container [2018-11-06 19:30:04,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:30:04" (3/3) ... [2018-11-06 19:30:04,398 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label31_false-unreach-call.c [2018-11-06 19:30:04,409 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:30:04,420 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:30:04,438 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:30:04,482 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:30:04,483 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:30:04,484 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:30:04,484 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:30:04,484 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:30:04,484 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:30:04,484 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:30:04,484 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:30:04,485 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:30:04,525 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-11-06 19:30:04,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-06 19:30:04,532 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:30:04,533 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:30:04,536 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:30:04,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:30:04,543 INFO L82 PathProgramCache]: Analyzing trace with hash 384191218, now seen corresponding path program 1 times [2018-11-06 19:30:04,545 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:30:04,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:30:04,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:04,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:30:04,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:30:04,855 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 19:30:04,858 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:30:04,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:30:04,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:30:04,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:30:04,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:30:04,885 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-11-06 19:30:13,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:30:13,380 INFO L93 Difference]: Finished difference Result 2102 states and 3914 transitions. [2018-11-06 19:30:13,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:30:13,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-11-06 19:30:13,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:30:13,413 INFO L225 Difference]: With dead ends: 2102 [2018-11-06 19:30:13,413 INFO L226 Difference]: Without dead ends: 1504 [2018-11-06 19:30:13,419 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:30:13,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2018-11-06 19:30:13,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1491. [2018-11-06 19:30:13,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1491 states. [2018-11-06 19:30:13,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 2416 transitions. [2018-11-06 19:30:13,545 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 2416 transitions. Word has length 9 [2018-11-06 19:30:13,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:30:13,546 INFO L480 AbstractCegarLoop]: Abstraction has 1491 states and 2416 transitions. [2018-11-06 19:30:13,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:30:13,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 2416 transitions. [2018-11-06 19:30:13,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-11-06 19:30:13,550 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:30:13,550 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:30:13,550 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:30:13,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:30:13,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1516617785, now seen corresponding path program 1 times [2018-11-06 19:30:13,551 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:30:13,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:30:13,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:13,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:30:13,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:30:13,837 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:30:13,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:30:13,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:30:13,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:30:13,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:30:13,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:30:13,842 INFO L87 Difference]: Start difference. First operand 1491 states and 2416 transitions. Second operand 4 states. [2018-11-06 19:30:22,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:30:22,421 INFO L93 Difference]: Finished difference Result 4268 states and 6993 transitions. [2018-11-06 19:30:22,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:30:22,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2018-11-06 19:30:22,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:30:22,438 INFO L225 Difference]: With dead ends: 4268 [2018-11-06 19:30:22,439 INFO L226 Difference]: Without dead ends: 2779 [2018-11-06 19:30:22,442 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:30:22,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2018-11-06 19:30:22,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2779. [2018-11-06 19:30:22,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2779 states. [2018-11-06 19:30:22,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2779 states to 2779 states and 3841 transitions. [2018-11-06 19:30:22,494 INFO L78 Accepts]: Start accepts. Automaton has 2779 states and 3841 transitions. Word has length 77 [2018-11-06 19:30:22,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:30:22,495 INFO L480 AbstractCegarLoop]: Abstraction has 2779 states and 3841 transitions. [2018-11-06 19:30:22,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:30:22,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2779 states and 3841 transitions. [2018-11-06 19:30:22,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-11-06 19:30:22,498 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:30:22,498 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-06 19:30:22,498 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:30:22,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:30:22,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1284183802, now seen corresponding path program 1 times [2018-11-06 19:30:22,499 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:30:22,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:30:22,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:22,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:30:22,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:30:22,881 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:30:22,882 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:30:22,882 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 19:30:22,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:30:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:30:22,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:30:23,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:30:23,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:30:23,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-06 19:30:23,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:30:23,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:30:23,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:30:23,263 INFO L87 Difference]: Start difference. First operand 2779 states and 3841 transitions. Second operand 6 states. [2018-11-06 19:30:35,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:30:35,704 INFO L93 Difference]: Finished difference Result 13740 states and 18943 transitions. [2018-11-06 19:30:35,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 19:30:35,715 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2018-11-06 19:30:35,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:30:35,758 INFO L225 Difference]: With dead ends: 13740 [2018-11-06 19:30:35,759 INFO L226 Difference]: Without dead ends: 8329 [2018-11-06 19:30:35,769 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:30:35,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8329 states. [2018-11-06 19:30:35,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8329 to 8320. [2018-11-06 19:30:35,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8320 states. [2018-11-06 19:30:35,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8320 states to 8320 states and 10083 transitions. [2018-11-06 19:30:35,937 INFO L78 Accepts]: Start accepts. Automaton has 8320 states and 10083 transitions. Word has length 80 [2018-11-06 19:30:35,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:30:35,938 INFO L480 AbstractCegarLoop]: Abstraction has 8320 states and 10083 transitions. [2018-11-06 19:30:35,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:30:35,938 INFO L276 IsEmpty]: Start isEmpty. Operand 8320 states and 10083 transitions. [2018-11-06 19:30:35,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-11-06 19:30:35,948 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:30:35,948 INFO L375 BasicCegarLoop]: trace histogram [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, 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 19:30:35,948 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:30:35,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:30:35,950 INFO L82 PathProgramCache]: Analyzing trace with hash 373425507, now seen corresponding path program 1 times [2018-11-06 19:30:35,950 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:30:35,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:30:35,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:35,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:30:35,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:30:36,235 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:30:36,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:30:36,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:30:36,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:30:36,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:30:36,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:30:36,238 INFO L87 Difference]: Start difference. First operand 8320 states and 10083 transitions. Second operand 3 states. [2018-11-06 19:30:38,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:30:38,699 INFO L93 Difference]: Finished difference Result 20900 states and 25916 transitions. [2018-11-06 19:30:38,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:30:38,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2018-11-06 19:30:38,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:30:38,746 INFO L225 Difference]: With dead ends: 20900 [2018-11-06 19:30:38,746 INFO L226 Difference]: Without dead ends: 13009 [2018-11-06 19:30:38,756 INFO L604 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 [2018-11-06 19:30:38,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13009 states. [2018-11-06 19:30:38,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13009 to 13009. [2018-11-06 19:30:38,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13009 states. [2018-11-06 19:30:38,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13009 states to 13009 states and 15403 transitions. [2018-11-06 19:30:38,945 INFO L78 Accepts]: Start accepts. Automaton has 13009 states and 15403 transitions. Word has length 159 [2018-11-06 19:30:38,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:30:38,946 INFO L480 AbstractCegarLoop]: Abstraction has 13009 states and 15403 transitions. [2018-11-06 19:30:38,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:30:38,946 INFO L276 IsEmpty]: Start isEmpty. Operand 13009 states and 15403 transitions. [2018-11-06 19:30:38,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-11-06 19:30:38,959 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:30:38,959 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:30:38,959 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:30:38,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:30:38,960 INFO L82 PathProgramCache]: Analyzing trace with hash 450877180, now seen corresponding path program 1 times [2018-11-06 19:30:38,960 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:30:38,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:30:38,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:38,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:30:38,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:30:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 297 proven. 83 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-06 19:30:39,868 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:30:39,869 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 19:30:39,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:30:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:30:39,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:30:40,288 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 297 proven. 83 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-06 19:30:40,307 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:30:40,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-11-06 19:30:40,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:30:40,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:30:40,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:30:40,309 INFO L87 Difference]: Start difference. First operand 13009 states and 15403 transitions. Second operand 7 states. [2018-11-06 19:30:49,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:30:49,521 INFO L93 Difference]: Finished difference Result 39288 states and 46523 transitions. [2018-11-06 19:30:49,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:30:49,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 335 [2018-11-06 19:30:49,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:30:49,575 INFO L225 Difference]: With dead ends: 39288 [2018-11-06 19:30:49,575 INFO L226 Difference]: Without dead ends: 24533 [2018-11-06 19:30:49,589 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:30:49,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24533 states. [2018-11-06 19:30:49,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24533 to 21501. [2018-11-06 19:30:49,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21501 states. [2018-11-06 19:30:49,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21501 states to 21501 states and 24272 transitions. [2018-11-06 19:30:49,876 INFO L78 Accepts]: Start accepts. Automaton has 21501 states and 24272 transitions. Word has length 335 [2018-11-06 19:30:49,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:30:49,877 INFO L480 AbstractCegarLoop]: Abstraction has 21501 states and 24272 transitions. [2018-11-06 19:30:49,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:30:49,877 INFO L276 IsEmpty]: Start isEmpty. Operand 21501 states and 24272 transitions. [2018-11-06 19:30:49,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-11-06 19:30:49,886 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:30:49,886 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:49,887 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:30:49,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:30:49,887 INFO L82 PathProgramCache]: Analyzing trace with hash 211741069, now seen corresponding path program 1 times [2018-11-06 19:30:49,887 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:30:49,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:30:49,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:49,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:30:49,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:30:50,358 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2018-11-06 19:30:50,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:30:50,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:30:50,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:30:50,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:30:50,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:30:50,360 INFO L87 Difference]: Start difference. First operand 21501 states and 24272 transitions. Second operand 4 states. [2018-11-06 19:30:54,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:30:54,435 INFO L93 Difference]: Finished difference Result 53649 states and 61013 transitions. [2018-11-06 19:30:54,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:30:54,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 374 [2018-11-06 19:30:54,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:30:54,486 INFO L225 Difference]: With dead ends: 53649 [2018-11-06 19:30:54,486 INFO L226 Difference]: Without dead ends: 31288 [2018-11-06 19:30:54,512 INFO L604 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 [2018-11-06 19:30:54,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31288 states. [2018-11-06 19:30:55,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31288 to 27439. [2018-11-06 19:30:55,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27439 states. [2018-11-06 19:30:55,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27439 states to 27439 states and 30410 transitions. [2018-11-06 19:30:55,063 INFO L78 Accepts]: Start accepts. Automaton has 27439 states and 30410 transitions. Word has length 374 [2018-11-06 19:30:55,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:30:55,064 INFO L480 AbstractCegarLoop]: Abstraction has 27439 states and 30410 transitions. [2018-11-06 19:30:55,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:30:55,064 INFO L276 IsEmpty]: Start isEmpty. Operand 27439 states and 30410 transitions. [2018-11-06 19:30:55,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-11-06 19:30:55,077 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:30:55,078 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:55,078 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:30:55,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:30:55,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1165552730, now seen corresponding path program 1 times [2018-11-06 19:30:55,079 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:30:55,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:30:55,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:55,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:30:55,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:30:55,946 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 202 proven. 83 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-06 19:30:55,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:30:55,946 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 19:30:55,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:30:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:30:56,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:30:56,459 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 202 proven. 83 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-06 19:30:56,496 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:30:56,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2018-11-06 19:30:56,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 19:30:56,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 19:30:56,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-06 19:30:56,501 INFO L87 Difference]: Start difference. First operand 27439 states and 30410 transitions. Second operand 9 states. [2018-11-06 19:30:56,742 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-06 19:31:08,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:31:08,138 INFO L93 Difference]: Finished difference Result 56732 states and 62769 transitions. [2018-11-06 19:31:08,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:31:08,139 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 415 [2018-11-06 19:31:08,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:31:08,171 INFO L225 Difference]: With dead ends: 56732 [2018-11-06 19:31:08,171 INFO L226 Difference]: Without dead ends: 29721 [2018-11-06 19:31:08,188 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 413 SyntacticMatches, 8 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-11-06 19:31:08,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29721 states. [2018-11-06 19:31:08,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29721 to 29569. [2018-11-06 19:31:08,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29569 states. [2018-11-06 19:31:08,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29569 states to 29569 states and 32614 transitions. [2018-11-06 19:31:08,523 INFO L78 Accepts]: Start accepts. Automaton has 29569 states and 32614 transitions. Word has length 415 [2018-11-06 19:31:08,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:31:08,524 INFO L480 AbstractCegarLoop]: Abstraction has 29569 states and 32614 transitions. [2018-11-06 19:31:08,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 19:31:08,524 INFO L276 IsEmpty]: Start isEmpty. Operand 29569 states and 32614 transitions. [2018-11-06 19:31:08,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2018-11-06 19:31:08,545 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:31:08,545 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:31:08,545 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:31:08,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:31:08,546 INFO L82 PathProgramCache]: Analyzing trace with hash 94454684, now seen corresponding path program 1 times [2018-11-06 19:31:08,546 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:31:08,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:31:08,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:31:08,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:31:08,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:31:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:31:08,979 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-06 19:31:09,136 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-11-06 19:31:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-11-06 19:31:09,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:31:09,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:31:09,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:31:09,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:31:09,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:31:09,424 INFO L87 Difference]: Start difference. First operand 29569 states and 32614 transitions. Second operand 4 states. [2018-11-06 19:31:13,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:31:13,991 INFO L93 Difference]: Finished difference Result 73694 states and 81487 transitions. [2018-11-06 19:31:13,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:31:13,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 496 [2018-11-06 19:31:13,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:31:14,045 INFO L225 Difference]: With dead ends: 73694 [2018-11-06 19:31:14,046 INFO L226 Difference]: Without dead ends: 44979 [2018-11-06 19:31:14,062 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 19:31:14,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44979 states. [2018-11-06 19:31:14,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44979 to 26566. [2018-11-06 19:31:14,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26566 states. [2018-11-06 19:31:14,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26566 states to 26566 states and 29041 transitions. [2018-11-06 19:31:14,450 INFO L78 Accepts]: Start accepts. Automaton has 26566 states and 29041 transitions. Word has length 496 [2018-11-06 19:31:14,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:31:14,451 INFO L480 AbstractCegarLoop]: Abstraction has 26566 states and 29041 transitions. [2018-11-06 19:31:14,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:31:14,452 INFO L276 IsEmpty]: Start isEmpty. Operand 26566 states and 29041 transitions. [2018-11-06 19:31:14,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2018-11-06 19:31:14,467 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:31:14,467 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:31:14,468 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:31:14,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:31:14,468 INFO L82 PathProgramCache]: Analyzing trace with hash 2017435882, now seen corresponding path program 1 times [2018-11-06 19:31:14,468 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:31:14,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:31:14,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:31:14,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:31:14,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:31:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:31:14,883 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2018-11-06 19:31:14,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:31:14,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:31:14,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:31:14,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:31:14,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:31:14,885 INFO L87 Difference]: Start difference. First operand 26566 states and 29041 transitions. Second operand 3 states. [2018-11-06 19:31:18,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:31:18,651 INFO L93 Difference]: Finished difference Result 56535 states and 61828 transitions. [2018-11-06 19:31:18,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:31:18,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 502 [2018-11-06 19:31:18,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:31:18,686 INFO L225 Difference]: With dead ends: 56535 [2018-11-06 19:31:18,686 INFO L226 Difference]: Without dead ends: 30823 [2018-11-06 19:31:18,704 INFO L604 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 [2018-11-06 19:31:18,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30823 states. [2018-11-06 19:31:18,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30823 to 30393. [2018-11-06 19:31:18,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30393 states. [2018-11-06 19:31:19,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30393 states to 30393 states and 32922 transitions. [2018-11-06 19:31:19,025 INFO L78 Accepts]: Start accepts. Automaton has 30393 states and 32922 transitions. Word has length 502 [2018-11-06 19:31:19,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:31:19,026 INFO L480 AbstractCegarLoop]: Abstraction has 30393 states and 32922 transitions. [2018-11-06 19:31:19,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:31:19,027 INFO L276 IsEmpty]: Start isEmpty. Operand 30393 states and 32922 transitions. [2018-11-06 19:31:19,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2018-11-06 19:31:19,038 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:31:19,039 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:19,039 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:31:19,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:31:19,040 INFO L82 PathProgramCache]: Analyzing trace with hash -2107335423, now seen corresponding path program 1 times [2018-11-06 19:31:19,040 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:31:19,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:31:19,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:31:19,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:31:19,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:31:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:31:19,587 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 379 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-11-06 19:31:19,588 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:31:19,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 19:31:19,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:31:19,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:31:19,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:31:19,589 INFO L87 Difference]: Start difference. First operand 30393 states and 32922 transitions. Second operand 5 states. [2018-11-06 19:31:25,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:31:25,143 INFO L93 Difference]: Finished difference Result 83411 states and 90307 transitions. [2018-11-06 19:31:25,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:31:25,144 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 517 [2018-11-06 19:31:25,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:31:25,197 INFO L225 Difference]: With dead ends: 83411 [2018-11-06 19:31:25,197 INFO L226 Difference]: Without dead ends: 52168 [2018-11-06 19:31:25,221 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:31:25,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52168 states. [2018-11-06 19:31:25,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52168 to 40631. [2018-11-06 19:31:25,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40631 states. [2018-11-06 19:31:25,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40631 states to 40631 states and 43733 transitions. [2018-11-06 19:31:25,650 INFO L78 Accepts]: Start accepts. Automaton has 40631 states and 43733 transitions. Word has length 517 [2018-11-06 19:31:25,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:31:25,651 INFO L480 AbstractCegarLoop]: Abstraction has 40631 states and 43733 transitions. [2018-11-06 19:31:25,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:31:25,651 INFO L276 IsEmpty]: Start isEmpty. Operand 40631 states and 43733 transitions. [2018-11-06 19:31:25,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2018-11-06 19:31:25,671 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:31:25,672 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:25,672 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:31:25,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:31:25,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1392134470, now seen corresponding path program 1 times [2018-11-06 19:31:25,673 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:31:25,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:31:25,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:31:25,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:31:25,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:31:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:31:26,215 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-11-06 19:31:26,537 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 351 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-11-06 19:31:26,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:31:26,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:31:26,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:31:26,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:31:26,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:31:26,540 INFO L87 Difference]: Start difference. First operand 40631 states and 43733 transitions. Second operand 4 states. [2018-11-06 19:31:31,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:31:31,085 INFO L93 Difference]: Finished difference Result 85107 states and 91743 transitions. [2018-11-06 19:31:31,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:31:31,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 550 [2018-11-06 19:31:31,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:31:31,144 INFO L225 Difference]: With dead ends: 85107 [2018-11-06 19:31:31,144 INFO L226 Difference]: Without dead ends: 47034 [2018-11-06 19:31:31,171 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 19:31:31,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47034 states. [2018-11-06 19:31:31,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47034 to 39773. [2018-11-06 19:31:31,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39773 states. [2018-11-06 19:31:31,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39773 states to 39773 states and 42514 transitions. [2018-11-06 19:31:31,576 INFO L78 Accepts]: Start accepts. Automaton has 39773 states and 42514 transitions. Word has length 550 [2018-11-06 19:31:31,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:31:31,577 INFO L480 AbstractCegarLoop]: Abstraction has 39773 states and 42514 transitions. [2018-11-06 19:31:31,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:31:31,577 INFO L276 IsEmpty]: Start isEmpty. Operand 39773 states and 42514 transitions. [2018-11-06 19:31:31,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2018-11-06 19:31:31,588 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:31:31,589 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:31,589 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:31:31,589 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:31:31,590 INFO L82 PathProgramCache]: Analyzing trace with hash 62640894, now seen corresponding path program 1 times [2018-11-06 19:31:31,590 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:31:31,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:31:31,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:31:31,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:31:31,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:31:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:31:32,234 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 377 proven. 404 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-06 19:31:32,234 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:31:32,235 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:31:32,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:31:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:31:32,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:31:32,747 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 18 [2018-11-06 19:31:33,340 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2018-11-06 19:31:33,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:31:33,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-11-06 19:31:33,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:31:33,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:31:33,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:31:33,374 INFO L87 Difference]: Start difference. First operand 39773 states and 42514 transitions. Second operand 7 states. [2018-11-06 19:31:47,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:31:47,459 INFO L93 Difference]: Finished difference Result 96645 states and 103489 transitions. [2018-11-06 19:31:47,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-06 19:31:47,459 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 562 [2018-11-06 19:31:47,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:31:47,516 INFO L225 Difference]: With dead ends: 96645 [2018-11-06 19:31:47,516 INFO L226 Difference]: Without dead ends: 58574 [2018-11-06 19:31:47,541 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 564 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:31:47,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58574 states. [2018-11-06 19:31:48,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58574 to 52999. [2018-11-06 19:31:48,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52999 states. [2018-11-06 19:31:48,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52999 states to 52999 states and 56177 transitions. [2018-11-06 19:31:48,058 INFO L78 Accepts]: Start accepts. Automaton has 52999 states and 56177 transitions. Word has length 562 [2018-11-06 19:31:48,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:31:48,058 INFO L480 AbstractCegarLoop]: Abstraction has 52999 states and 56177 transitions. [2018-11-06 19:31:48,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:31:48,059 INFO L276 IsEmpty]: Start isEmpty. Operand 52999 states and 56177 transitions. [2018-11-06 19:31:48,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2018-11-06 19:31:48,070 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:31:48,070 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:48,070 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:31:48,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:31:48,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1011850501, now seen corresponding path program 1 times [2018-11-06 19:31:48,071 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:31:48,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:31:48,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:31:48,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:31:48,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:31:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:31:49,282 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 32 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:31:49,283 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:31:49,283 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:31:49,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:31:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:31:49,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:31:49,696 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 13 [2018-11-06 19:31:50,780 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 409 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-11-06 19:31:50,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:31:50,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-11-06 19:31:50,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 19:31:50,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 19:31:50,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:31:50,815 INFO L87 Difference]: Start difference. First operand 52999 states and 56177 transitions. Second operand 8 states. [2018-11-06 19:32:00,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:32:00,183 INFO L93 Difference]: Finished difference Result 153366 states and 162622 transitions. [2018-11-06 19:32:00,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-06 19:32:00,183 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 634 [2018-11-06 19:32:00,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:32:00,290 INFO L225 Difference]: With dead ends: 153366 [2018-11-06 19:32:00,290 INFO L226 Difference]: Without dead ends: 99934 [2018-11-06 19:32:00,327 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 633 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:32:00,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99934 states. [2018-11-06 19:32:01,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99934 to 71305. [2018-11-06 19:32:01,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71305 states. [2018-11-06 19:32:01,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71305 states to 71305 states and 75048 transitions. [2018-11-06 19:32:01,490 INFO L78 Accepts]: Start accepts. Automaton has 71305 states and 75048 transitions. Word has length 634 [2018-11-06 19:32:01,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:32:01,491 INFO L480 AbstractCegarLoop]: Abstraction has 71305 states and 75048 transitions. [2018-11-06 19:32:01,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 19:32:01,491 INFO L276 IsEmpty]: Start isEmpty. Operand 71305 states and 75048 transitions. [2018-11-06 19:32:01,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2018-11-06 19:32:01,502 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:32:01,502 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:01,502 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:32:01,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:32:01,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1606349035, now seen corresponding path program 1 times [2018-11-06 19:32:01,503 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:32:01,503 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:32:01,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:32:01,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:32:01,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:32:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:32:02,419 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 6 [2018-11-06 19:32:02,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 629 proven. 248 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2018-11-06 19:32:02,821 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:32:02,821 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:32:02,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:32:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:32:03,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:32:10,490 WARN L179 SmtUtils]: Spent 4.41 s on a formula simplification. DAG size of input: 504 DAG size of output: 31 [2018-11-06 19:32:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 477 proven. 0 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2018-11-06 19:32:12,075 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:32:12,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2018-11-06 19:32:12,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-06 19:32:12,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-06 19:32:12,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:32:12,077 INFO L87 Difference]: Start difference. First operand 71305 states and 75048 transitions. Second operand 10 states. [2018-11-06 19:33:23,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:33:23,810 INFO L93 Difference]: Finished difference Result 180593 states and 190300 transitions. [2018-11-06 19:33:23,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-06 19:33:23,810 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 637 [2018-11-06 19:33:23,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:33:23,919 INFO L225 Difference]: With dead ends: 180593 [2018-11-06 19:33:23,919 INFO L226 Difference]: Without dead ends: 111846 [2018-11-06 19:33:23,961 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 641 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2018-11-06 19:33:24,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111846 states. [2018-11-06 19:33:24,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111846 to 96028. [2018-11-06 19:33:24,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96028 states. [2018-11-06 19:33:24,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96028 states to 96028 states and 100128 transitions. [2018-11-06 19:33:24,981 INFO L78 Accepts]: Start accepts. Automaton has 96028 states and 100128 transitions. Word has length 637 [2018-11-06 19:33:24,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:33:24,982 INFO L480 AbstractCegarLoop]: Abstraction has 96028 states and 100128 transitions. [2018-11-06 19:33:24,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-06 19:33:24,982 INFO L276 IsEmpty]: Start isEmpty. Operand 96028 states and 100128 transitions. [2018-11-06 19:33:24,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2018-11-06 19:33:24,994 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:33:24,994 INFO L375 BasicCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2018-11-06 19:33:24,994 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:33:24,994 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:33:24,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1637208476, now seen corresponding path program 1 times [2018-11-06 19:33:24,995 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:33:24,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:33:24,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:33:24,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:33:24,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:33:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:33:26,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 540 proven. 16 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2018-11-06 19:33:26,043 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:33:26,043 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:33:26,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:33:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:33:26,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:33:26,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 871 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2018-11-06 19:33:26,522 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:33:26,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 19:33:26,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:33:26,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:33:26,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:33:26,524 INFO L87 Difference]: Start difference. First operand 96028 states and 100128 transitions. Second operand 4 states. [2018-11-06 19:33:28,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:33:28,437 INFO L93 Difference]: Finished difference Result 186069 states and 193922 transitions. [2018-11-06 19:33:28,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:33:28,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 680 [2018-11-06 19:33:28,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:33:28,534 INFO L225 Difference]: With dead ends: 186069 [2018-11-06 19:33:28,535 INFO L226 Difference]: Without dead ends: 92172 [2018-11-06 19:33:28,580 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 680 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 19:33:28,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92172 states. [2018-11-06 19:33:29,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92172 to 92158. [2018-11-06 19:33:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92158 states. [2018-11-06 19:33:29,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92158 states to 92158 states and 95906 transitions. [2018-11-06 19:33:29,943 INFO L78 Accepts]: Start accepts. Automaton has 92158 states and 95906 transitions. Word has length 680 [2018-11-06 19:33:29,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:33:29,943 INFO L480 AbstractCegarLoop]: Abstraction has 92158 states and 95906 transitions. [2018-11-06 19:33:29,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:33:29,943 INFO L276 IsEmpty]: Start isEmpty. Operand 92158 states and 95906 transitions. [2018-11-06 19:33:29,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2018-11-06 19:33:29,956 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:33:29,956 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:33:29,957 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:33:29,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:33:29,957 INFO L82 PathProgramCache]: Analyzing trace with hash -92240367, now seen corresponding path program 1 times [2018-11-06 19:33:29,957 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:33:29,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:33:29,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:33:29,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:33:29,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:33:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:33:30,839 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-11-06 19:33:31,247 WARN L179 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2018-11-06 19:33:31,555 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2018-11-06 19:33:32,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 501 proven. 526 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-06 19:33:32,464 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:33:32,464 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:33:32,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:33:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:33:32,651 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:33:32,975 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 14 Received shutdown request... [2018-11-06 19:33:49,445 WARN L187 SmtUtils]: Removed 2 from assertion stack [2018-11-06 19:33:49,445 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-06 19:33:49,647 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:33:49,647 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:33:49,652 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:33:49,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:33:49 BoogieIcfgContainer [2018-11-06 19:33:49,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:33:49,653 INFO L168 Benchmark]: Toolchain (without parser) took 235800.24 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -370.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-06 19:33:49,654 INFO L168 Benchmark]: CDTParser took 0.22 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 19:33:49,656 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1555.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-06 19:33:49,656 INFO L168 Benchmark]: Boogie Procedure Inliner took 515.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 774.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -899.8 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-06 19:33:49,657 INFO L168 Benchmark]: Boogie Preprocessor took 375.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2018-11-06 19:33:49,660 INFO L168 Benchmark]: RCFGBuilder took 8086.26 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 485.8 MB). Peak memory consumption was 485.8 MB. Max. memory is 7.1 GB. [2018-11-06 19:33:49,661 INFO L168 Benchmark]: TraceAbstraction took 225262.18 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 1.8 GB in the end (delta: -121.6 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-06 19:33:49,666 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1555.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 515.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 774.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -899.8 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 375.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8086.26 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 485.8 MB). Peak memory consumption was 485.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225262.18 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 1.8 GB in the end (delta: -121.6 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 32]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 32). Cancelled while BasicCegarLoop was analyzing trace of length 682 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 203. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 225.1s OverallTime, 16 OverallIterations, 7 TraceHistogramMax, 173.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5447 SDtfs, 25997 SDslu, 3103 SDs, 0 SdLazy, 74713 SolverSat, 7264 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 151.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3436 GetRequests, 3356 SyntacticMatches, 12 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 12.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96028occurred in iteration=14, 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: 7.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 94732 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 18.5s InterpolantComputationTime, 9370 NumberOfCodeBlocks, 9370 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 9348 ConstructedInterpolants, 486 QuantifiedInterpolants, 24838112 SizeOfPredicates, 3 NumberOfNonLiveVariables, 4303 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 22 InterpolantComputations, 13 PerfectInterpolantSequences, 10757/12388 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown