java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-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/Problem12_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:17:03,893 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:17:03,895 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:17:03,913 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:17:03,914 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:17:03,915 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:17:03,916 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:17:03,919 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:17:03,920 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:17:03,921 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:17:03,922 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:17:03,922 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:17:03,923 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:17:03,924 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:17:03,925 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:17:03,926 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:17:03,927 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:17:03,929 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:17:03,931 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:17:03,932 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:17:03,933 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:17:03,935 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:17:03,937 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 16:17:03,948 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:17:03,963 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:17:03,963 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:17:03,964 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:17:03,964 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:17:03,964 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:17:03,965 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:17:03,965 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:17:03,965 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:17:03,965 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:17:03,965 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:17:03,965 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:17:03,966 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:17:03,966 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:17:03,966 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:17:03,966 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:17:03,966 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:17:03,967 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:17:03,967 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:17:03,967 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:17:03,967 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:17:03,968 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:17:03,968 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:17:03,968 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:17:03,968 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:17:03,968 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:17:03,968 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:17:03,969 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:17:03,969 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:17:04,014 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:17:04,026 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:17:04,030 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:17:04,032 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:17:04,032 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:17:04,033 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c [2018-10-24 16:17:04,092 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cd5744145/e5a80b6e84ec4380950fbf79c469ec16/FLAG8dacb1791 [2018-10-24 16:17:04,852 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:17:04,853 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c [2018-10-24 16:17:04,880 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cd5744145/e5a80b6e84ec4380950fbf79c469ec16/FLAG8dacb1791 [2018-10-24 16:17:04,899 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cd5744145/e5a80b6e84ec4380950fbf79c469ec16 [2018-10-24 16:17:04,912 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:17:04,915 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:17:04,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:17:04,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:17:04,923 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:17:04,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:17:04" (1/1) ... [2018-10-24 16:17:04,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b78fa2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:04, skipping insertion in model container [2018-10-24 16:17:04,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:17:04" (1/1) ... [2018-10-24 16:17:04,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:17:05,107 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:17:06,309 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:17:06,313 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:17:06,899 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:17:06,933 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:17:06,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:06 WrapperNode [2018-10-24 16:17:06,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:17:06,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:17:06,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:17:06,935 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:17:06,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:06" (1/1) ... [2018-10-24 16:17:07,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:06" (1/1) ... [2018-10-24 16:17:07,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:17:07,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:17:07,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:17:07,606 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:17:07,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:06" (1/1) ... [2018-10-24 16:17:07,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:06" (1/1) ... [2018-10-24 16:17:07,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:06" (1/1) ... [2018-10-24 16:17:07,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:06" (1/1) ... [2018-10-24 16:17:07,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:06" (1/1) ... [2018-10-24 16:17:07,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:06" (1/1) ... [2018-10-24 16:17:07,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:06" (1/1) ... [2018-10-24 16:17:08,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:17:08,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:17:08,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:17:08,053 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:17:08,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 16:17:08,126 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:17:08,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:17:08,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:17:17,006 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:17:17,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:17:17 BoogieIcfgContainer [2018-10-24 16:17:17,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:17:17,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:17:17,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:17:17,011 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:17:17,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:17:04" (1/3) ... [2018-10-24 16:17:17,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2d7c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:17:17, skipping insertion in model container [2018-10-24 16:17:17,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:06" (2/3) ... [2018-10-24 16:17:17,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2d7c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:17:17, skipping insertion in model container [2018-10-24 16:17:17,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:17:17" (3/3) ... [2018-10-24 16:17:17,015 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label54_true-unreach-call.c [2018-10-24 16:17:17,025 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:17:17,035 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:17:17,053 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:17:17,109 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:17:17,109 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:17:17,109 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:17:17,109 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:17:17,109 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:17:17,110 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:17:17,110 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:17:17,110 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:17:17,110 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:17:17,152 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-24 16:17:17,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-24 16:17:17,167 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:17:17,168 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:17:17,171 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:17:17,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:17:17,177 INFO L82 PathProgramCache]: Analyzing trace with hash 646480794, now seen corresponding path program 1 times [2018-10-24 16:17:17,180 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:17:17,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:17:17,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:17:17,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:17:17,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:17:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:17:17,610 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-24 16:17:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:17:17,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:17:17,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:17:17,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:17:17,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:17:17,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:17:17,652 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-24 16:17:30,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:17:30,312 INFO L93 Difference]: Finished difference Result 3162 states and 6150 transitions. [2018-10-24 16:17:30,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:17:30,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-10-24 16:17:30,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:17:30,352 INFO L225 Difference]: With dead ends: 3162 [2018-10-24 16:17:30,352 INFO L226 Difference]: Without dead ends: 2336 [2018-10-24 16:17:30,360 INFO L605 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 [2018-10-24 16:17:30,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2018-10-24 16:17:30,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 2336. [2018-10-24 16:17:30,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2336 states. [2018-10-24 16:17:30,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3769 transitions. [2018-10-24 16:17:30,514 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3769 transitions. Word has length 34 [2018-10-24 16:17:30,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:17:30,514 INFO L481 AbstractCegarLoop]: Abstraction has 2336 states and 3769 transitions. [2018-10-24 16:17:30,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:17:30,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3769 transitions. [2018-10-24 16:17:30,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-24 16:17:30,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:17:30,520 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:17:30,521 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:17:30,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:17:30,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1748382567, now seen corresponding path program 1 times [2018-10-24 16:17:30,521 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:17:30,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:17:30,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:17:30,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:17:30,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:17:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:17:31,156 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-10-24 16:17:31,340 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 20 [2018-10-24 16:17:31,464 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:17:31,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:17:31,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:17:31,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:17:31,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:17:31,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:17:31,467 INFO L87 Difference]: Start difference. First operand 2336 states and 3769 transitions. Second operand 6 states. [2018-10-24 16:17:48,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:17:48,600 INFO L93 Difference]: Finished difference Result 9183 states and 14416 transitions. [2018-10-24 16:17:48,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:17:48,601 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-10-24 16:17:48,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:17:48,641 INFO L225 Difference]: With dead ends: 9183 [2018-10-24 16:17:48,642 INFO L226 Difference]: Without dead ends: 6849 [2018-10-24 16:17:48,648 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:17:48,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6849 states. [2018-10-24 16:17:48,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6849 to 6849. [2018-10-24 16:17:48,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6849 states. [2018-10-24 16:17:48,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6849 states to 6849 states and 9754 transitions. [2018-10-24 16:17:48,795 INFO L78 Accepts]: Start accepts. Automaton has 6849 states and 9754 transitions. Word has length 111 [2018-10-24 16:17:48,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:17:48,796 INFO L481 AbstractCegarLoop]: Abstraction has 6849 states and 9754 transitions. [2018-10-24 16:17:48,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:17:48,796 INFO L276 IsEmpty]: Start isEmpty. Operand 6849 states and 9754 transitions. [2018-10-24 16:17:48,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-24 16:17:48,810 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:17:48,810 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:17:48,810 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:17:48,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:17:48,812 INFO L82 PathProgramCache]: Analyzing trace with hash -766593584, now seen corresponding path program 1 times [2018-10-24 16:17:48,812 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:17:48,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:17:48,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:17:48,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:17:48,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:17:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:17:49,043 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:17:49,043 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:17:49,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:17:49,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:17:49,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:17:49,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:17:49,045 INFO L87 Difference]: Start difference. First operand 6849 states and 9754 transitions. Second operand 4 states. [2018-10-24 16:18:01,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:18:01,350 INFO L93 Difference]: Finished difference Result 22720 states and 33366 transitions. [2018-10-24 16:18:01,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:18:01,352 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2018-10-24 16:18:01,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:18:01,420 INFO L225 Difference]: With dead ends: 22720 [2018-10-24 16:18:01,421 INFO L226 Difference]: Without dead ends: 15873 [2018-10-24 16:18:01,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:18:01,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15873 states. [2018-10-24 16:18:01,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15873 to 15873. [2018-10-24 16:18:01,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15873 states. [2018-10-24 16:18:01,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15873 states to 15873 states and 22642 transitions. [2018-10-24 16:18:01,710 INFO L78 Accepts]: Start accepts. Automaton has 15873 states and 22642 transitions. Word has length 180 [2018-10-24 16:18:01,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:18:01,711 INFO L481 AbstractCegarLoop]: Abstraction has 15873 states and 22642 transitions. [2018-10-24 16:18:01,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:18:01,711 INFO L276 IsEmpty]: Start isEmpty. Operand 15873 states and 22642 transitions. [2018-10-24 16:18:01,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-24 16:18:01,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:18:01,717 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:18:01,717 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:18:01,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:18:01,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1827343801, now seen corresponding path program 1 times [2018-10-24 16:18:01,718 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:18:01,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:18:01,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:01,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:18:01,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:18:02,270 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-24 16:18:02,580 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 9 [2018-10-24 16:18:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 129 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:18:02,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:18:02,881 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 16:18:02,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:18:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:18:02,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:18:03,129 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:18:03,152 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:18:03,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-10-24 16:18:03,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:18:03,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:18:03,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:18:03,153 INFO L87 Difference]: Start difference. First operand 15873 states and 22642 transitions. Second operand 6 states. [2018-10-24 16:18:20,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:18:20,060 INFO L93 Difference]: Finished difference Result 54336 states and 74477 transitions. [2018-10-24 16:18:20,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 16:18:20,060 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 216 [2018-10-24 16:18:20,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:18:20,132 INFO L225 Difference]: With dead ends: 54336 [2018-10-24 16:18:20,132 INFO L226 Difference]: Without dead ends: 35453 [2018-10-24 16:18:20,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 217 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:18:20,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35453 states. [2018-10-24 16:18:20,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35453 to 24895. [2018-10-24 16:18:20,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24895 states. [2018-10-24 16:18:20,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24895 states to 24895 states and 30992 transitions. [2018-10-24 16:18:20,616 INFO L78 Accepts]: Start accepts. Automaton has 24895 states and 30992 transitions. Word has length 216 [2018-10-24 16:18:20,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:18:20,617 INFO L481 AbstractCegarLoop]: Abstraction has 24895 states and 30992 transitions. [2018-10-24 16:18:20,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:18:20,617 INFO L276 IsEmpty]: Start isEmpty. Operand 24895 states and 30992 transitions. [2018-10-24 16:18:20,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-24 16:18:20,623 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:18:20,624 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:18:20,624 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:18:20,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:18:20,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1916792086, now seen corresponding path program 1 times [2018-10-24 16:18:20,625 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:18:20,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:18:20,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:20,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:18:20,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:18:21,109 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:18:21,110 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:18:21,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:18:21,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:18:21,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:18:21,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:18:21,111 INFO L87 Difference]: Start difference. First operand 24895 states and 30992 transitions. Second operand 4 states. [2018-10-24 16:18:30,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:18:30,137 INFO L93 Difference]: Finished difference Result 51292 states and 63865 transitions. [2018-10-24 16:18:30,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:18:30,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 286 [2018-10-24 16:18:30,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:18:30,184 INFO L225 Difference]: With dead ends: 51292 [2018-10-24 16:18:30,184 INFO L226 Difference]: Without dead ends: 26399 [2018-10-24 16:18:30,209 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:18:30,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26399 states. [2018-10-24 16:18:30,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26399 to 26399. [2018-10-24 16:18:30,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26399 states. [2018-10-24 16:18:30,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26399 states to 26399 states and 32122 transitions. [2018-10-24 16:18:30,513 INFO L78 Accepts]: Start accepts. Automaton has 26399 states and 32122 transitions. Word has length 286 [2018-10-24 16:18:30,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:18:30,513 INFO L481 AbstractCegarLoop]: Abstraction has 26399 states and 32122 transitions. [2018-10-24 16:18:30,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:18:30,514 INFO L276 IsEmpty]: Start isEmpty. Operand 26399 states and 32122 transitions. [2018-10-24 16:18:30,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-24 16:18:30,521 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:18:30,521 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:18:30,521 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:18:30,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:18:30,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1846820896, now seen corresponding path program 1 times [2018-10-24 16:18:30,522 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:18:30,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:18:30,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:30,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:18:30,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:18:31,267 WARN L179 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-10-24 16:18:31,487 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-10-24 16:18:31,678 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 64 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:18:31,679 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:18:31,679 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 16:18:31,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:18:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:18:31,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:18:32,007 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 105 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:18:32,035 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:18:32,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2018-10-24 16:18:32,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:18:32,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:18:32,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:18:32,037 INFO L87 Difference]: Start difference. First operand 26399 states and 32122 transitions. Second operand 8 states. [2018-10-24 16:18:52,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:18:52,338 INFO L93 Difference]: Finished difference Result 82124 states and 102545 transitions. [2018-10-24 16:18:52,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 16:18:52,350 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 290 [2018-10-24 16:18:52,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:18:52,479 INFO L225 Difference]: With dead ends: 82124 [2018-10-24 16:18:52,479 INFO L226 Difference]: Without dead ends: 52717 [2018-10-24 16:18:52,506 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 289 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2018-10-24 16:18:52,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52717 states. [2018-10-24 16:18:53,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52717 to 46701. [2018-10-24 16:18:53,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46701 states. [2018-10-24 16:18:53,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46701 states to 46701 states and 55795 transitions. [2018-10-24 16:18:53,116 INFO L78 Accepts]: Start accepts. Automaton has 46701 states and 55795 transitions. Word has length 290 [2018-10-24 16:18:53,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:18:53,116 INFO L481 AbstractCegarLoop]: Abstraction has 46701 states and 55795 transitions. [2018-10-24 16:18:53,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 16:18:53,117 INFO L276 IsEmpty]: Start isEmpty. Operand 46701 states and 55795 transitions. [2018-10-24 16:18:53,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-10-24 16:18:53,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:18:53,124 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:18:53,124 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:18:53,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:18:53,124 INFO L82 PathProgramCache]: Analyzing trace with hash -994629629, now seen corresponding path program 1 times [2018-10-24 16:18:53,125 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:18:53,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:18:53,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:53,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:18:53,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:18:53,502 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-10-24 16:18:53,502 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:18:53,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:18:53,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:18:53,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:18:53,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:18:53,504 INFO L87 Difference]: Start difference. First operand 46701 states and 55795 transitions. Second operand 3 states. [2018-10-24 16:19:02,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:19:02,979 INFO L93 Difference]: Finished difference Result 117464 states and 141842 transitions. [2018-10-24 16:19:02,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:19:02,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 313 [2018-10-24 16:19:02,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:19:03,085 INFO L225 Difference]: With dead ends: 117464 [2018-10-24 16:19:03,086 INFO L226 Difference]: Without dead ends: 71517 [2018-10-24 16:19:03,122 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:19:03,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71517 states. [2018-10-24 16:19:03,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71517 to 71517. [2018-10-24 16:19:03,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71517 states. [2018-10-24 16:19:03,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71517 states to 71517 states and 85366 transitions. [2018-10-24 16:19:03,902 INFO L78 Accepts]: Start accepts. Automaton has 71517 states and 85366 transitions. Word has length 313 [2018-10-24 16:19:03,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:19:03,903 INFO L481 AbstractCegarLoop]: Abstraction has 71517 states and 85366 transitions. [2018-10-24 16:19:03,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:19:03,903 INFO L276 IsEmpty]: Start isEmpty. Operand 71517 states and 85366 transitions. [2018-10-24 16:19:03,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2018-10-24 16:19:03,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:19:03,946 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:19:03,946 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:19:03,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:19:03,946 INFO L82 PathProgramCache]: Analyzing trace with hash 484519548, now seen corresponding path program 1 times [2018-10-24 16:19:03,946 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:19:03,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:19:03,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:03,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:03,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:04,655 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 95 proven. 8 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2018-10-24 16:19:04,655 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:19:04,655 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 16:19:04,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:04,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:19:05,102 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-24 16:19:05,135 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:19:05,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:19:05,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:19:05,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:19:05,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:19:05,138 INFO L87 Difference]: Start difference. First operand 71517 states and 85366 transitions. Second operand 4 states. [2018-10-24 16:19:15,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:19:15,443 INFO L93 Difference]: Finished difference Result 207020 states and 250387 transitions. [2018-10-24 16:19:15,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:19:15,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 605 [2018-10-24 16:19:15,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:19:15,629 INFO L225 Difference]: With dead ends: 207020 [2018-10-24 16:19:15,629 INFO L226 Difference]: Without dead ends: 136257 [2018-10-24 16:19:15,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 605 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:19:15,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136257 states. [2018-10-24 16:19:16,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136257 to 95581. [2018-10-24 16:19:16,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95581 states. [2018-10-24 16:19:16,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95581 states to 95581 states and 113212 transitions. [2018-10-24 16:19:16,927 INFO L78 Accepts]: Start accepts. Automaton has 95581 states and 113212 transitions. Word has length 605 [2018-10-24 16:19:16,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:19:16,928 INFO L481 AbstractCegarLoop]: Abstraction has 95581 states and 113212 transitions. [2018-10-24 16:19:16,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:19:16,929 INFO L276 IsEmpty]: Start isEmpty. Operand 95581 states and 113212 transitions. [2018-10-24 16:19:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2018-10-24 16:19:16,973 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:19:16,973 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1] [2018-10-24 16:19:16,974 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:19:16,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:19:16,974 INFO L82 PathProgramCache]: Analyzing trace with hash 421223414, now seen corresponding path program 1 times [2018-10-24 16:19:16,974 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:19:16,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:19:16,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:16,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:16,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:18,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 900 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-24 16:19:18,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:19:18,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:19:18,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:19:18,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:19:18,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:19:18,090 INFO L87 Difference]: Start difference. First operand 95581 states and 113212 transitions. Second operand 4 states. [2018-10-24 16:19:30,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:19:30,910 INFO L93 Difference]: Finished difference Result 231768 states and 273876 transitions. [2018-10-24 16:19:30,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:19:30,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 647 [2018-10-24 16:19:30,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:19:31,110 INFO L225 Difference]: With dead ends: 231768 [2018-10-24 16:19:31,111 INFO L226 Difference]: Without dead ends: 136941 [2018-10-24 16:19:31,186 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:19:31,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136941 states. [2018-10-24 16:19:33,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136941 to 135437. [2018-10-24 16:19:33,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135437 states. [2018-10-24 16:19:33,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135437 states to 135437 states and 152696 transitions. [2018-10-24 16:19:33,307 INFO L78 Accepts]: Start accepts. Automaton has 135437 states and 152696 transitions. Word has length 647 [2018-10-24 16:19:33,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:19:33,308 INFO L481 AbstractCegarLoop]: Abstraction has 135437 states and 152696 transitions. [2018-10-24 16:19:33,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:19:33,308 INFO L276 IsEmpty]: Start isEmpty. Operand 135437 states and 152696 transitions. [2018-10-24 16:19:33,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2018-10-24 16:19:33,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:19:33,346 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:19:33,346 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:19:33,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:19:33,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1818866847, now seen corresponding path program 1 times [2018-10-24 16:19:33,347 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:19:33,347 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:19:33,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:33,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:33,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:34,385 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 481 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2018-10-24 16:19:34,385 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:19:34,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 16:19:34,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:19:34,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:19:34,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:19:34,387 INFO L87 Difference]: Start difference. First operand 135437 states and 152696 transitions. Second operand 7 states. [2018-10-24 16:19:48,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:19:48,875 INFO L93 Difference]: Finished difference Result 366857 states and 411897 transitions. [2018-10-24 16:19:48,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:19:48,875 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 678 [2018-10-24 16:19:48,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:19:49,147 INFO L225 Difference]: With dead ends: 366857 [2018-10-24 16:19:49,148 INFO L226 Difference]: Without dead ends: 232174 [2018-10-24 16:19:49,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:19:49,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232174 states. [2018-10-24 16:19:50,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232174 to 167797. [2018-10-24 16:19:50,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167797 states. [2018-10-24 16:19:52,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167797 states to 167797 states and 187156 transitions. [2018-10-24 16:19:52,363 INFO L78 Accepts]: Start accepts. Automaton has 167797 states and 187156 transitions. Word has length 678 [2018-10-24 16:19:52,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:19:52,364 INFO L481 AbstractCegarLoop]: Abstraction has 167797 states and 187156 transitions. [2018-10-24 16:19:52,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:19:52,365 INFO L276 IsEmpty]: Start isEmpty. Operand 167797 states and 187156 transitions. [2018-10-24 16:19:52,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2018-10-24 16:19:52,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:19:52,397 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:19:52,397 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:19:52,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:19:52,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1862861537, now seen corresponding path program 1 times [2018-10-24 16:19:52,398 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:19:52,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:19:52,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:52,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:52,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:53,516 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 675 proven. 12 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-10-24 16:19:53,516 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:19:53,516 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 16:19:53,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:53,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:19:54,001 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-10-24 16:19:54,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:19:54,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2018-10-24 16:19:54,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 16:19:54,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 16:19:54,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2018-10-24 16:19:54,024 INFO L87 Difference]: Start difference. First operand 167797 states and 187156 transitions. Second operand 10 states. [2018-10-24 16:20:25,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:25,601 INFO L93 Difference]: Finished difference Result 415758 states and 461051 transitions. [2018-10-24 16:20:25,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-24 16:20:25,602 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 685 [2018-10-24 16:20:25,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:25,817 INFO L225 Difference]: With dead ends: 415758 [2018-10-24 16:20:25,818 INFO L226 Difference]: Without dead ends: 198040 [2018-10-24 16:20:25,893 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 692 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=206, Unknown=0, NotChecked=0, Total=342 [2018-10-24 16:20:26,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198040 states. [2018-10-24 16:20:28,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198040 to 127371. [2018-10-24 16:20:28,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127371 states. [2018-10-24 16:20:28,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127371 states to 127371 states and 137820 transitions. [2018-10-24 16:20:28,411 INFO L78 Accepts]: Start accepts. Automaton has 127371 states and 137820 transitions. Word has length 685 [2018-10-24 16:20:28,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:28,411 INFO L481 AbstractCegarLoop]: Abstraction has 127371 states and 137820 transitions. [2018-10-24 16:20:28,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 16:20:28,411 INFO L276 IsEmpty]: Start isEmpty. Operand 127371 states and 137820 transitions. [2018-10-24 16:20:28,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2018-10-24 16:20:28,434 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:28,435 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:20:28,435 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:28,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:28,436 INFO L82 PathProgramCache]: Analyzing trace with hash -370549071, now seen corresponding path program 1 times [2018-10-24 16:20:28,436 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:28,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:28,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:28,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:28,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:30,104 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked. [2018-10-24 16:20:30,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:20:30,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:20:30,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:20:30,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:20:30,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:30,106 INFO L87 Difference]: Start difference. First operand 127371 states and 137820 transitions. Second operand 4 states. [2018-10-24 16:20:38,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:38,645 INFO L93 Difference]: Finished difference Result 277300 states and 299625 transitions. [2018-10-24 16:20:38,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:20:38,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 709 [2018-10-24 16:20:38,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:38,812 INFO L225 Difference]: With dead ends: 277300 [2018-10-24 16:20:38,812 INFO L226 Difference]: Without dead ends: 150683 [2018-10-24 16:20:38,882 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:38,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150683 states. [2018-10-24 16:20:40,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150683 to 144667. [2018-10-24 16:20:40,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144667 states. [2018-10-24 16:20:40,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144667 states to 144667 states and 153502 transitions. [2018-10-24 16:20:40,931 INFO L78 Accepts]: Start accepts. Automaton has 144667 states and 153502 transitions. Word has length 709 [2018-10-24 16:20:40,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:40,932 INFO L481 AbstractCegarLoop]: Abstraction has 144667 states and 153502 transitions. [2018-10-24 16:20:40,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:20:40,932 INFO L276 IsEmpty]: Start isEmpty. Operand 144667 states and 153502 transitions. [2018-10-24 16:20:40,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2018-10-24 16:20:40,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:40,994 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:20:40,995 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:40,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:40,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1070664920, now seen corresponding path program 1 times [2018-10-24 16:20:40,995 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:40,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:40,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:40,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:40,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:42,375 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2018-10-24 16:20:42,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:20:42,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:20:42,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:20:42,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:20:42,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:20:42,377 INFO L87 Difference]: Start difference. First operand 144667 states and 153502 transitions. Second operand 3 states. [2018-10-24 16:20:48,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:48,327 INFO L93 Difference]: Finished difference Result 278092 states and 295140 transitions. [2018-10-24 16:20:48,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:20:48,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 982 [2018-10-24 16:20:48,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:48,328 INFO L225 Difference]: With dead ends: 278092 [2018-10-24 16:20:48,328 INFO L226 Difference]: Without dead ends: 0 [2018-10-24 16:20:48,407 INFO L605 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 [2018-10-24 16:20:48,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-24 16:20:48,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-24 16:20:48,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-24 16:20:48,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-24 16:20:48,407 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 982 [2018-10-24 16:20:48,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:48,408 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-24 16:20:48,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:20:48,408 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-24 16:20:48,408 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-24 16:20:48,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-24 16:20:48,479 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:48,513 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:48,627 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:48,629 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:48,745 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:48,927 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:49,062 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:49,065 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:49,308 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:49,877 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:49,965 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:49,965 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:50,134 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:50,143 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:50,144 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:50,161 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:50,196 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:50,198 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:50,198 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:50,224 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:50,238 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:50,267 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:50,297 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:50,352 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:50,404 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:50,427 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:50,489 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:50,504 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:50,526 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:50,601 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:51,094 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:51,181 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:51,228 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:51,268 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:51,320 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:51,375 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:51,439 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:51,520 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:51,529 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:51,553 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:51,845 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:51,880 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:51,938 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:52,144 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:52,166 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:52,262 WARN L179 SmtUtils]: Spent 3.84 s on a formula simplification. DAG size of input: 1120 DAG size of output: 666 [2018-10-24 16:20:52,329 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:52,359 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:52,432 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:52,447 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:52,502 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:52,507 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:52,528 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:52,632 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:52,709 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:52,848 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:20:52,848 WARN L250 erpolLogProxyWrapper]: Already inconsistent. Received shutdown request... [2018-10-24 16:20:52,932 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-10-24 16:20:52,934 INFO L168 Benchmark]: Toolchain (without parser) took 228020.07 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -231.3 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 16:20:52,935 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. [2018-10-24 16:20:52,935 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2017.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:20:52,936 INFO L168 Benchmark]: Boogie Procedure Inliner took 670.09 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 823.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:20:52,937 INFO L168 Benchmark]: Boogie Preprocessor took 447.12 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:20:52,938 INFO L168 Benchmark]: RCFGBuilder took 8954.16 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 213.4 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -159.4 MB). Peak memory consumption was 623.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:20:52,939 INFO L168 Benchmark]: TraceAbstraction took 215925.33 ms. Allocated memory was 2.6 GB in the beginning and 3.6 GB in the end (delta: 1.0 GB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 695.2 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 16:20:52,944 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 2017.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 670.09 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 823.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 447.12 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8954.16 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 213.4 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -159.4 MB). Peak memory consumption was 623.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215925.33 ms. Allocated memory was 2.6 GB in the beginning and 3.6 GB in the end (delta: 1.0 GB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 695.2 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 111]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 789. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown