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/loop-invgen/heapsort_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 15:50:32,872 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 15:50:32,875 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 15:50:32,891 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 15:50:32,892 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 15:50:32,893 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 15:50:32,895 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 15:50:32,897 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 15:50:32,899 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 15:50:32,899 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 15:50:32,903 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 15:50:32,903 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 15:50:32,904 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 15:50:32,907 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 15:50:32,910 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 15:50:32,911 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 15:50:32,912 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 15:50:32,917 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 15:50:32,919 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 15:50:32,923 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 15:50:32,924 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 15:50:32,926 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 15:50:32,929 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 15:50:32,937 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 [2018-10-23 15:50:32,953 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 15:50:32,953 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 15:50:32,954 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 15:50:32,954 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 15:50:32,955 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 15:50:32,955 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 15:50:32,955 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 15:50:32,956 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 15:50:32,956 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 15:50:32,956 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 15:50:32,956 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 15:50:32,956 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 15:50:32,956 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 15:50:32,957 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 15:50:32,957 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 15:50:32,957 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 15:50:32,957 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 15:50:32,958 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 15:50:32,958 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 15:50:32,958 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 15:50:32,958 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 15:50:32,958 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 15:50:32,959 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 15:50:32,959 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 15:50:32,959 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 15:50:32,959 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 15:50:32,959 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 15:50:32,960 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 15:50:33,002 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 15:50:33,018 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 15:50:33,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 15:50:33,025 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 15:50:33,026 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 15:50:33,026 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-invgen/heapsort_true-unreach-call_true-termination.i [2018-10-23 15:50:33,086 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/057e71d5a/c010873ae0cd4455943032c2e111c63a/FLAG95abc6a8b [2018-10-23 15:50:33,502 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 15:50:33,503 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/heapsort_true-unreach-call_true-termination.i [2018-10-23 15:50:33,509 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/057e71d5a/c010873ae0cd4455943032c2e111c63a/FLAG95abc6a8b [2018-10-23 15:50:33,523 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/057e71d5a/c010873ae0cd4455943032c2e111c63a [2018-10-23 15:50:33,533 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 15:50:33,535 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 15:50:33,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 15:50:33,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 15:50:33,540 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 15:50:33,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 03:50:33" (1/1) ... [2018-10-23 15:50:33,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f28427b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:50:33, skipping insertion in model container [2018-10-23 15:50:33,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 03:50:33" (1/1) ... [2018-10-23 15:50:33,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 15:50:33,592 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 15:50:33,818 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 15:50:33,830 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 15:50:33,863 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 15:50:33,886 INFO L193 MainTranslator]: Completed translation [2018-10-23 15:50:33,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:50:33 WrapperNode [2018-10-23 15:50:33,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 15:50:33,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 15:50:33,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 15:50:33,891 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 15:50:33,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:50:33" (1/1) ... [2018-10-23 15:50:33,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:50:33" (1/1) ... [2018-10-23 15:50:33,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 15:50:33,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 15:50:33,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 15:50:33,935 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 15:50:33,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:50:33" (1/1) ... [2018-10-23 15:50:33,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:50:33" (1/1) ... [2018-10-23 15:50:33,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:50:33" (1/1) ... [2018-10-23 15:50:33,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:50:33" (1/1) ... [2018-10-23 15:50:33,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:50:33" (1/1) ... [2018-10-23 15:50:33,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:50:33" (1/1) ... [2018-10-23 15:50:33,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:50:33" (1/1) ... [2018-10-23 15:50:33,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 15:50:33,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 15:50:33,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 15:50:33,971 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 15:50:33,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:50:33" (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 [2018-10-23 15:50:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 15:50:34,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 15:50:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-23 15:50:34,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-23 15:50:34,533 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 15:50:34,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 03:50:34 BoogieIcfgContainer [2018-10-23 15:50:34,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 15:50:34,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 15:50:34,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 15:50:34,538 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 15:50:34,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 03:50:33" (1/3) ... [2018-10-23 15:50:34,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429b0f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 03:50:34, skipping insertion in model container [2018-10-23 15:50:34,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:50:33" (2/3) ... [2018-10-23 15:50:34,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429b0f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 03:50:34, skipping insertion in model container [2018-10-23 15:50:34,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 03:50:34" (3/3) ... [2018-10-23 15:50:34,542 INFO L112 eAbstractionObserver]: Analyzing ICFG heapsort_true-unreach-call_true-termination.i [2018-10-23 15:50:34,549 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 15:50:34,557 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 15:50:34,574 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 15:50:34,608 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 15:50:34,608 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 15:50:34,609 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 15:50:34,609 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 15:50:34,609 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 15:50:34,609 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 15:50:34,609 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 15:50:34,609 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 15:50:34,610 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 15:50:34,629 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-10-23 15:50:34,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-23 15:50:34,634 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:50:34,635 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:50:34,637 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:50:34,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:50:34,643 INFO L82 PathProgramCache]: Analyzing trace with hash 201403027, now seen corresponding path program 1 times [2018-10-23 15:50:34,644 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:50:34,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:50:34,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:34,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:34,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:34,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 15:50:34,773 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 15:50:34,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 15:50:34,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-23 15:50:34,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-23 15:50:34,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-23 15:50:34,796 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2018-10-23 15:50:34,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:50:34,828 INFO L93 Difference]: Finished difference Result 78 states and 136 transitions. [2018-10-23 15:50:34,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-23 15:50:34,830 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-10-23 15:50:34,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:50:34,842 INFO L225 Difference]: With dead ends: 78 [2018-10-23 15:50:34,843 INFO L226 Difference]: Without dead ends: 37 [2018-10-23 15:50:34,847 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-23 15:50:34,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-23 15:50:34,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-23 15:50:34,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-23 15:50:34,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 56 transitions. [2018-10-23 15:50:34,899 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 56 transitions. Word has length 12 [2018-10-23 15:50:34,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:50:34,899 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 56 transitions. [2018-10-23 15:50:34,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-23 15:50:34,900 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 56 transitions. [2018-10-23 15:50:34,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-23 15:50:34,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:50:34,901 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:50:34,901 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:50:34,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:50:34,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1490239341, now seen corresponding path program 1 times [2018-10-23 15:50:34,902 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:50:34,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:50:34,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:34,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:34,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:35,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 15:50:35,180 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 15:50:35,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 15:50:35,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 15:50:35,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 15:50:35,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-23 15:50:35,184 INFO L87 Difference]: Start difference. First operand 37 states and 56 transitions. Second operand 6 states. [2018-10-23 15:50:35,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:50:35,911 INFO L93 Difference]: Finished difference Result 74 states and 111 transitions. [2018-10-23 15:50:35,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 15:50:35,912 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-10-23 15:50:35,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:50:35,914 INFO L225 Difference]: With dead ends: 74 [2018-10-23 15:50:35,914 INFO L226 Difference]: Without dead ends: 72 [2018-10-23 15:50:35,916 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-23 15:50:35,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-23 15:50:35,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 59. [2018-10-23 15:50:35,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-23 15:50:35,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 91 transitions. [2018-10-23 15:50:35,940 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 91 transitions. Word has length 13 [2018-10-23 15:50:35,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:50:35,941 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 91 transitions. [2018-10-23 15:50:35,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 15:50:35,941 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 91 transitions. [2018-10-23 15:50:35,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-23 15:50:35,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:50:35,942 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:50:35,943 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:50:35,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:50:35,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1477995240, now seen corresponding path program 1 times [2018-10-23 15:50:35,943 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:50:35,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:50:35,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:35,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:35,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:36,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 15:50:36,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 15:50:36,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 15:50:36,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 15:50:36,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 15:50:36,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-23 15:50:36,125 INFO L87 Difference]: Start difference. First operand 59 states and 91 transitions. Second operand 6 states. [2018-10-23 15:50:36,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:50:36,752 INFO L93 Difference]: Finished difference Result 118 states and 181 transitions. [2018-10-23 15:50:36,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 15:50:36,753 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-10-23 15:50:36,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:50:36,756 INFO L225 Difference]: With dead ends: 118 [2018-10-23 15:50:36,756 INFO L226 Difference]: Without dead ends: 116 [2018-10-23 15:50:36,757 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-23 15:50:36,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-10-23 15:50:36,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 109. [2018-10-23 15:50:36,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-23 15:50:36,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 170 transitions. [2018-10-23 15:50:36,788 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 170 transitions. Word has length 13 [2018-10-23 15:50:36,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:50:36,793 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 170 transitions. [2018-10-23 15:50:36,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 15:50:36,793 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 170 transitions. [2018-10-23 15:50:36,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-23 15:50:36,794 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:50:36,794 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:50:36,795 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:50:36,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:50:36,795 INFO L82 PathProgramCache]: Analyzing trace with hash -2057511575, now seen corresponding path program 1 times [2018-10-23 15:50:36,795 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:50:36,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:50:36,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:36,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:36,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:36,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 15:50:36,915 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 15:50:36,915 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 [2018-10-23 15:50:36,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:36,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 15:50:37,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 15:50:37,351 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 15:50:37,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 12 [2018-10-23 15:50:37,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-23 15:50:37,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-23 15:50:37,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-10-23 15:50:37,353 INFO L87 Difference]: Start difference. First operand 109 states and 170 transitions. Second operand 12 states. [2018-10-23 15:50:39,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:50:39,126 INFO L93 Difference]: Finished difference Result 242 states and 384 transitions. [2018-10-23 15:50:39,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-23 15:50:39,127 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2018-10-23 15:50:39,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:50:39,132 INFO L225 Difference]: With dead ends: 242 [2018-10-23 15:50:39,133 INFO L226 Difference]: Without dead ends: 240 [2018-10-23 15:50:39,134 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-10-23 15:50:39,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-10-23 15:50:39,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 199. [2018-10-23 15:50:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-23 15:50:39,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 320 transitions. [2018-10-23 15:50:39,195 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 320 transitions. Word has length 18 [2018-10-23 15:50:39,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:50:39,196 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 320 transitions. [2018-10-23 15:50:39,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-23 15:50:39,196 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 320 transitions. [2018-10-23 15:50:39,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-23 15:50:39,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:50:39,198 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:50:39,199 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:50:39,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:50:39,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1598314546, now seen corresponding path program 1 times [2018-10-23 15:50:39,199 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:50:39,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:50:39,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:39,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:39,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-23 15:50:39,309 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 15:50:39,309 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 [2018-10-23 15:50:39,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:39,333 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 15:50:39,399 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-23 15:50:39,426 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 15:50:39,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2018-10-23 15:50:39,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 15:50:39,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 15:50:39,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-10-23 15:50:39,427 INFO L87 Difference]: Start difference. First operand 199 states and 320 transitions. Second operand 9 states. [2018-10-23 15:50:40,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:50:40,080 INFO L93 Difference]: Finished difference Result 257 states and 405 transitions. [2018-10-23 15:50:40,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 15:50:40,081 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2018-10-23 15:50:40,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:50:40,084 INFO L225 Difference]: With dead ends: 257 [2018-10-23 15:50:40,084 INFO L226 Difference]: Without dead ends: 255 [2018-10-23 15:50:40,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-10-23 15:50:40,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-10-23 15:50:40,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 232. [2018-10-23 15:50:40,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-10-23 15:50:40,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 371 transitions. [2018-10-23 15:50:40,134 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 371 transitions. Word has length 25 [2018-10-23 15:50:40,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:50:40,135 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 371 transitions. [2018-10-23 15:50:40,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 15:50:40,135 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 371 transitions. [2018-10-23 15:50:40,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-23 15:50:40,137 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:50:40,137 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:50:40,137 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:50:40,138 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:50:40,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1015418930, now seen corresponding path program 1 times [2018-10-23 15:50:40,138 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:50:40,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:50:40,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:40,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:40,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:40,229 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-23 15:50:40,230 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 15:50:40,230 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 [2018-10-23 15:50:40,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:40,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 15:50:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-23 15:50:40,366 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 15:50:40,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2018-10-23 15:50:40,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 15:50:40,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 15:50:40,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-10-23 15:50:40,368 INFO L87 Difference]: Start difference. First operand 232 states and 371 transitions. Second operand 9 states. [2018-10-23 15:50:41,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:50:41,336 INFO L93 Difference]: Finished difference Result 314 states and 500 transitions. [2018-10-23 15:50:41,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 15:50:41,344 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-10-23 15:50:41,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:50:41,348 INFO L225 Difference]: With dead ends: 314 [2018-10-23 15:50:41,348 INFO L226 Difference]: Without dead ends: 312 [2018-10-23 15:50:41,349 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-10-23 15:50:41,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-10-23 15:50:41,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 285. [2018-10-23 15:50:41,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-10-23 15:50:41,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 460 transitions. [2018-10-23 15:50:41,409 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 460 transitions. Word has length 28 [2018-10-23 15:50:41,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:50:41,409 INFO L481 AbstractCegarLoop]: Abstraction has 285 states and 460 transitions. [2018-10-23 15:50:41,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 15:50:41,410 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 460 transitions. [2018-10-23 15:50:41,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-23 15:50:41,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:50:41,412 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:50:41,412 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:50:41,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:50:41,413 INFO L82 PathProgramCache]: Analyzing trace with hash 574596932, now seen corresponding path program 1 times [2018-10-23 15:50:41,413 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:50:41,413 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:50:41,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:41,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:41,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:42,103 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-23 15:50:42,104 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 15:50:42,104 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 [2018-10-23 15:50:42,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:42,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 15:50:42,417 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-10-23 15:50:42,653 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-23 15:50:42,679 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 15:50:42,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 15 [2018-10-23 15:50:42,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-23 15:50:42,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-23 15:50:42,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2018-10-23 15:50:42,681 INFO L87 Difference]: Start difference. First operand 285 states and 460 transitions. Second operand 15 states. [2018-10-23 15:50:44,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:50:44,334 INFO L93 Difference]: Finished difference Result 375 states and 592 transitions. [2018-10-23 15:50:44,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-23 15:50:44,337 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 30 [2018-10-23 15:50:44,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:50:44,340 INFO L225 Difference]: With dead ends: 375 [2018-10-23 15:50:44,340 INFO L226 Difference]: Without dead ends: 373 [2018-10-23 15:50:44,341 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-10-23 15:50:44,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-10-23 15:50:44,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 330. [2018-10-23 15:50:44,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2018-10-23 15:50:44,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 525 transitions. [2018-10-23 15:50:44,382 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 525 transitions. Word has length 30 [2018-10-23 15:50:44,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:50:44,382 INFO L481 AbstractCegarLoop]: Abstraction has 330 states and 525 transitions. [2018-10-23 15:50:44,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-23 15:50:44,383 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 525 transitions. [2018-10-23 15:50:44,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-23 15:50:44,384 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:50:44,384 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:50:44,385 INFO L424 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:50:44,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:50:44,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1875761279, now seen corresponding path program 1 times [2018-10-23 15:50:44,385 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:50:44,385 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:50:44,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:44,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:44,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:44,554 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-23 15:50:44,554 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 15:50:44,554 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 15:50:44,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:44,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 15:50:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-23 15:50:44,693 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 15:50:44,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 10 [2018-10-23 15:50:44,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 15:50:44,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 15:50:44,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-10-23 15:50:44,695 INFO L87 Difference]: Start difference. First operand 330 states and 525 transitions. Second operand 10 states. [2018-10-23 15:50:45,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:50:45,029 INFO L93 Difference]: Finished difference Result 344 states and 537 transitions. [2018-10-23 15:50:45,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 15:50:45,032 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2018-10-23 15:50:45,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:50:45,035 INFO L225 Difference]: With dead ends: 344 [2018-10-23 15:50:45,036 INFO L226 Difference]: Without dead ends: 342 [2018-10-23 15:50:45,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-10-23 15:50:45,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-10-23 15:50:45,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 338. [2018-10-23 15:50:45,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2018-10-23 15:50:45,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 531 transitions. [2018-10-23 15:50:45,076 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 531 transitions. Word has length 29 [2018-10-23 15:50:45,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:50:45,077 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 531 transitions. [2018-10-23 15:50:45,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-23 15:50:45,077 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 531 transitions. [2018-10-23 15:50:45,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-23 15:50:45,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:50:45,078 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:50:45,079 INFO L424 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:50:45,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:50:45,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1797142330, now seen corresponding path program 1 times [2018-10-23 15:50:45,079 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:50:45,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:50:45,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:45,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:45,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-23 15:50:45,254 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 15:50:45,254 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 15:50:45,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:45,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 15:50:45,554 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-23 15:50:45,583 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 15:50:45,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2018-10-23 15:50:45,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-23 15:50:45,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-23 15:50:45,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2018-10-23 15:50:45,586 INFO L87 Difference]: Start difference. First operand 338 states and 531 transitions. Second operand 14 states. [2018-10-23 15:50:47,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:50:47,668 INFO L93 Difference]: Finished difference Result 589 states and 953 transitions. [2018-10-23 15:50:47,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-23 15:50:47,669 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2018-10-23 15:50:47,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:50:47,674 INFO L225 Difference]: With dead ends: 589 [2018-10-23 15:50:47,674 INFO L226 Difference]: Without dead ends: 587 [2018-10-23 15:50:47,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2018-10-23 15:50:47,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2018-10-23 15:50:47,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 522. [2018-10-23 15:50:47,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-10-23 15:50:47,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 854 transitions. [2018-10-23 15:50:47,766 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 854 transitions. Word has length 30 [2018-10-23 15:50:47,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:50:47,767 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 854 transitions. [2018-10-23 15:50:47,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-23 15:50:47,767 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 854 transitions. [2018-10-23 15:50:47,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-23 15:50:47,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:50:47,769 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:50:47,771 INFO L424 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:50:47,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:50:47,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1506527125, now seen corresponding path program 1 times [2018-10-23 15:50:47,771 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:50:47,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:50:47,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:47,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:47,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-10-23 15:50:47,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 15:50:47,949 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 15:50:47,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:47,975 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 15:50:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-10-23 15:50:48,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 15:50:48,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 10 [2018-10-23 15:50:48,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 15:50:48,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 15:50:48,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-10-23 15:50:48,044 INFO L87 Difference]: Start difference. First operand 522 states and 854 transitions. Second operand 10 states. [2018-10-23 15:50:48,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:50:48,780 INFO L93 Difference]: Finished difference Result 598 states and 963 transitions. [2018-10-23 15:50:48,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 15:50:48,783 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2018-10-23 15:50:48,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:50:48,788 INFO L225 Difference]: With dead ends: 598 [2018-10-23 15:50:48,788 INFO L226 Difference]: Without dead ends: 596 [2018-10-23 15:50:48,789 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-10-23 15:50:48,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2018-10-23 15:50:48,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 526. [2018-10-23 15:50:48,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2018-10-23 15:50:48,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 857 transitions. [2018-10-23 15:50:48,866 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 857 transitions. Word has length 40 [2018-10-23 15:50:48,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:50:48,867 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 857 transitions. [2018-10-23 15:50:48,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-23 15:50:48,867 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 857 transitions. [2018-10-23 15:50:48,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-23 15:50:48,868 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:50:48,869 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:50:48,869 INFO L424 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:50:48,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:50:48,869 INFO L82 PathProgramCache]: Analyzing trace with hash 143072073, now seen corresponding path program 1 times [2018-10-23 15:50:48,869 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:50:48,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:50:48,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:48,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:48,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:49,487 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-23 15:50:49,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 15:50:49,488 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 15:50:49,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:49,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 15:50:49,887 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-23 15:50:49,908 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 15:50:49,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 10 [2018-10-23 15:50:49,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 15:50:49,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 15:50:49,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-10-23 15:50:49,909 INFO L87 Difference]: Start difference. First operand 526 states and 857 transitions. Second operand 10 states. [2018-10-23 15:50:51,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:50:51,197 INFO L93 Difference]: Finished difference Result 562 states and 909 transitions. [2018-10-23 15:50:51,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 15:50:51,197 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2018-10-23 15:50:51,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:50:51,202 INFO L225 Difference]: With dead ends: 562 [2018-10-23 15:50:51,202 INFO L226 Difference]: Without dead ends: 560 [2018-10-23 15:50:51,203 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-10-23 15:50:51,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2018-10-23 15:50:51,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 530. [2018-10-23 15:50:51,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-10-23 15:50:51,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 860 transitions. [2018-10-23 15:50:51,282 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 860 transitions. Word has length 41 [2018-10-23 15:50:51,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:50:51,282 INFO L481 AbstractCegarLoop]: Abstraction has 530 states and 860 transitions. [2018-10-23 15:50:51,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-23 15:50:51,282 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 860 transitions. [2018-10-23 15:50:51,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-23 15:50:51,285 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:50:51,285 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 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] [2018-10-23 15:50:51,286 INFO L424 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:50:51,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:50:51,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1466383919, now seen corresponding path program 1 times [2018-10-23 15:50:51,286 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:50:51,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:50:51,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:51,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:51,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:51,655 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 19 proven. 26 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-23 15:50:51,656 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 15:50:51,656 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 15:50:51,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:51,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 15:50:52,027 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-10-23 15:50:52,046 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 15:50:52,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-10-23 15:50:52,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-23 15:50:52,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-23 15:50:52,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-10-23 15:50:52,048 INFO L87 Difference]: Start difference. First operand 530 states and 860 transitions. Second operand 11 states. [2018-10-23 15:50:53,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:50:53,467 INFO L93 Difference]: Finished difference Result 1093 states and 1743 transitions. [2018-10-23 15:50:53,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-23 15:50:53,467 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2018-10-23 15:50:53,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:50:53,469 INFO L225 Difference]: With dead ends: 1093 [2018-10-23 15:50:53,469 INFO L226 Difference]: Without dead ends: 284 [2018-10-23 15:50:53,477 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2018-10-23 15:50:53,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2018-10-23 15:50:53,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 237. [2018-10-23 15:50:53,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-10-23 15:50:53,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 345 transitions. [2018-10-23 15:50:53,512 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 345 transitions. Word has length 61 [2018-10-23 15:50:53,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:50:53,513 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 345 transitions. [2018-10-23 15:50:53,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-23 15:50:53,513 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 345 transitions. [2018-10-23 15:50:53,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-23 15:50:53,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:50:53,515 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:50:53,515 INFO L424 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:50:53,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:50:53,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1332369968, now seen corresponding path program 1 times [2018-10-23 15:50:53,516 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:50:53,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:50:53,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:53,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:53,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:50:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:53,599 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 31 proven. 4 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2018-10-23 15:50:53,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 15:50:53,600 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 15:50:53,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:50:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:50:53,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 15:50:54,124 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 123 proven. 4 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-10-23 15:50:54,146 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 15:50:54,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 11 [2018-10-23 15:50:54,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-23 15:50:54,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-23 15:50:54,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=86, Unknown=1, NotChecked=0, Total=110 [2018-10-23 15:50:54,148 INFO L87 Difference]: Start difference. First operand 237 states and 345 transitions. Second operand 11 states. [2018-10-23 15:50:54,579 WARN L179 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2018-10-23 15:50:56,143 WARN L179 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2018-10-23 15:50:56,512 WARN L179 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2018-10-23 15:51:00,006 WARN L179 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 21 [2018-10-23 15:51:12,523 WARN L179 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2018-10-23 15:51:15,603 WARN L179 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-10-23 15:51:29,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:51:29,987 INFO L93 Difference]: Finished difference Result 483 states and 697 transitions. [2018-10-23 15:51:29,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-23 15:51:29,990 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2018-10-23 15:51:29,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:51:29,992 INFO L225 Difference]: With dead ends: 483 [2018-10-23 15:51:29,992 INFO L226 Difference]: Without dead ends: 298 [2018-10-23 15:51:29,994 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=212, Invalid=640, Unknown=18, NotChecked=0, Total=870 [2018-10-23 15:51:29,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-10-23 15:51:30,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 200. [2018-10-23 15:51:30,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-23 15:51:30,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 284 transitions. [2018-10-23 15:51:30,029 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 284 transitions. Word has length 82 [2018-10-23 15:51:30,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:51:30,029 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 284 transitions. [2018-10-23 15:51:30,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-23 15:51:30,030 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 284 transitions. [2018-10-23 15:51:30,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-23 15:51:30,032 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:51:30,032 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 15:51:30,032 INFO L424 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:51:30,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:51:30,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1408874823, now seen corresponding path program 1 times [2018-10-23 15:51:30,033 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:51:30,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:51:30,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:51:30,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:51:30,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:51:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:51:30,474 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 48 proven. 11 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2018-10-23 15:51:30,474 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 15:51:30,475 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 15:51:30,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:51:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:51:30,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 15:51:30,760 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 212 proven. 9 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2018-10-23 15:51:30,781 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 15:51:30,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2018-10-23 15:51:30,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-23 15:51:30,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-23 15:51:30,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-10-23 15:51:30,782 INFO L87 Difference]: Start difference. First operand 200 states and 284 transitions. Second operand 14 states. [2018-10-23 15:51:31,988 WARN L179 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-23 15:51:34,629 WARN L179 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2018-10-23 15:51:35,968 WARN L179 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-10-23 15:51:38,585 WARN L179 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-10-23 15:51:40,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:51:40,695 INFO L93 Difference]: Finished difference Result 502 states and 732 transitions. [2018-10-23 15:51:40,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-23 15:51:40,696 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 117 [2018-10-23 15:51:40,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:51:40,698 INFO L225 Difference]: With dead ends: 502 [2018-10-23 15:51:40,698 INFO L226 Difference]: Without dead ends: 354 [2018-10-23 15:51:40,700 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=202, Invalid=605, Unknown=5, NotChecked=0, Total=812 [2018-10-23 15:51:40,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-10-23 15:51:40,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 250. [2018-10-23 15:51:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-10-23 15:51:40,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 369 transitions. [2018-10-23 15:51:40,755 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 369 transitions. Word has length 117 [2018-10-23 15:51:40,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:51:40,755 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 369 transitions. [2018-10-23 15:51:40,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-23 15:51:40,755 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 369 transitions. [2018-10-23 15:51:40,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-23 15:51:40,758 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:51:40,758 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 15:51:40,758 INFO L424 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:51:40,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:51:40,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1842603909, now seen corresponding path program 1 times [2018-10-23 15:51:40,759 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:51:40,759 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:51:40,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:51:40,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:51:40,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:51:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:51:41,267 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 33 proven. 74 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-10-23 15:51:41,267 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 15:51:41,267 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 15:51:41,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:51:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:51:41,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 15:51:41,520 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 34 proven. 25 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2018-10-23 15:51:41,541 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 15:51:41,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2018-10-23 15:51:41,541 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-23 15:51:41,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-23 15:51:41,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2018-10-23 15:51:41,542 INFO L87 Difference]: Start difference. First operand 250 states and 369 transitions. Second operand 16 states. [2018-10-23 15:51:43,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:51:43,469 INFO L93 Difference]: Finished difference Result 426 states and 627 transitions. [2018-10-23 15:51:43,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-23 15:51:43,470 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 117 [2018-10-23 15:51:43,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:51:43,473 INFO L225 Difference]: With dead ends: 426 [2018-10-23 15:51:43,474 INFO L226 Difference]: Without dead ends: 424 [2018-10-23 15:51:43,474 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2018-10-23 15:51:43,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2018-10-23 15:51:43,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 337. [2018-10-23 15:51:43,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-10-23 15:51:43,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 503 transitions. [2018-10-23 15:51:43,590 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 503 transitions. Word has length 117 [2018-10-23 15:51:43,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:51:43,591 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 503 transitions. [2018-10-23 15:51:43,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-23 15:51:43,591 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 503 transitions. [2018-10-23 15:51:43,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-23 15:51:43,593 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:51:43,594 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 21, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 15:51:43,594 INFO L424 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:51:43,594 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:51:43,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1027473157, now seen corresponding path program 2 times [2018-10-23 15:51:43,595 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:51:43,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:51:43,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:51:43,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:51:43,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:51:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:51:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 41 proven. 92 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-10-23 15:51:44,005 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 15:51:44,006 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 15:51:44,013 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-23 15:51:44,060 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-23 15:51:44,060 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 15:51:44,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 15:51:44,498 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 61 proven. 12 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2018-10-23 15:51:44,518 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 15:51:44,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2018-10-23 15:51:44,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-23 15:51:44,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-23 15:51:44,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2018-10-23 15:51:44,519 INFO L87 Difference]: Start difference. First operand 337 states and 503 transitions. Second operand 20 states. [2018-10-23 15:51:52,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:51:52,175 INFO L93 Difference]: Finished difference Result 589 states and 875 transitions. [2018-10-23 15:51:52,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-23 15:51:52,176 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 139 [2018-10-23 15:51:52,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:51:52,176 INFO L225 Difference]: With dead ends: 589 [2018-10-23 15:51:52,176 INFO L226 Difference]: Without dead ends: 0 [2018-10-23 15:51:52,179 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=539, Invalid=1911, Unknown=0, NotChecked=0, Total=2450 [2018-10-23 15:51:52,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-23 15:51:52,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-23 15:51:52,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-23 15:51:52,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-23 15:51:52,180 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 139 [2018-10-23 15:51:52,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:51:52,181 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-23 15:51:52,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-23 15:51:52,181 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-23 15:51:52,181 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-23 15:51:52,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-23 15:51:52,300 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:52,325 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:52,328 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:52,349 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:52,369 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 134 [2018-10-23 15:51:52,476 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:52,497 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:52,499 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:52,521 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:52,541 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 134 [2018-10-23 15:51:52,553 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:52,588 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:52,666 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:52,672 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 102 [2018-10-23 15:51:52,738 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:52,800 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:52,802 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:52,823 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:52,842 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:52,849 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:52,861 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:52,896 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:52,900 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:52,930 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:52,963 WARN L179 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 171 [2018-10-23 15:51:53,012 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:53,143 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:53,155 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 123 [2018-10-23 15:51:53,315 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:53,317 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:53,361 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:53,379 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:53,388 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:53,398 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:53,452 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:53,495 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:53,500 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:53,506 WARN L179 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 182 [2018-10-23 15:51:53,698 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 164 [2018-10-23 15:51:53,746 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:53,767 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:53,769 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:53,790 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:53,807 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 134 [2018-10-23 15:51:54,033 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:54,034 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:54,200 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:54,206 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:54,210 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:54,602 WARN L179 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 209 [2018-10-23 15:51:54,649 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:54,663 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:54,665 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:54,696 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:54,708 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 134 [2018-10-23 15:51:54,781 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:54,784 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:54,790 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:54,973 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:54,985 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:54,990 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:54,994 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 15:51:55,282 WARN L179 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 213 [2018-10-23 15:52:03,089 WARN L179 SmtUtils]: Spent 7.77 s on a formula simplification. DAG size of input: 111 DAG size of output: 69 [2018-10-23 15:52:44,738 WARN L179 SmtUtils]: Spent 41.65 s on a formula simplification. DAG size of input: 132 DAG size of output: 82 [2018-10-23 15:52:47,758 WARN L179 SmtUtils]: Spent 3.02 s on a formula simplification. DAG size of input: 112 DAG size of output: 69 [2018-10-23 15:53:27,556 WARN L179 SmtUtils]: Spent 39.80 s on a formula simplification. DAG size of input: 132 DAG size of output: 82 [2018-10-23 15:53:27,853 WARN L179 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 19 [2018-10-23 15:53:32,349 WARN L179 SmtUtils]: Spent 4.49 s on a formula simplification. DAG size of input: 111 DAG size of output: 69 [2018-10-23 15:53:39,918 WARN L179 SmtUtils]: Spent 7.57 s on a formula simplification. DAG size of input: 167 DAG size of output: 94 [2018-10-23 15:53:40,406 WARN L179 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 17 [2018-10-23 15:53:47,414 WARN L179 SmtUtils]: Spent 7.01 s on a formula simplification. DAG size of input: 178 DAG size of output: 94 [2018-10-23 15:54:41,886 WARN L179 SmtUtils]: Spent 54.47 s on a formula simplification. DAG size of input: 164 DAG size of output: 104 Received shutdown request... [2018-10-23 15:55:02,467 WARN L187 SmtUtils]: Removed 11 from assertion stack [2018-10-23 15:55:02,467 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-10-23 15:55:02,468 INFO L168 Benchmark]: Toolchain (without parser) took 268934.51 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 915.9 MB. Max. memory is 7.1 GB. [2018-10-23 15:55:02,469 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. [2018-10-23 15:55:02,470 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-23 15:55:02,471 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.47 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 15:55:02,471 INFO L168 Benchmark]: Boogie Preprocessor took 35.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 15:55:02,472 INFO L168 Benchmark]: RCFGBuilder took 562.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -786.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-10-23 15:55:02,473 INFO L168 Benchmark]: TraceAbstraction took 267933.29 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 293.1 MB). Free memory was 2.2 GB in the beginning and 2.5 GB in the end (delta: -292.6 MB). Peak memory consumption was 939.6 MB. Max. memory is 7.1 GB. [2018-10-23 15:55:02,477 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 350.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.47 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 562.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -786.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 267933.29 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 293.1 MB). Free memory was 2.2 GB in the beginning and 2.5 GB in the end (delta: -292.6 MB). Peak memory consumption was 939.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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 132. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown