java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label35_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:05:40,808 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:05:40,810 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:05:40,829 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:05:40,829 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:05:40,830 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:05:40,832 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:05:40,834 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:05:40,836 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:05:40,837 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:05:40,845 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:05:40,845 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:05:40,846 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:05:40,849 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:05:40,850 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:05:40,851 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:05:40,852 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:05:40,854 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:05:40,858 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:05:40,863 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:05:40,864 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:05:40,865 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:05:40,868 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:05:40,868 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:05:40,868 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:05:40,870 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:05:40,871 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:05:40,873 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:05:40,874 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:05:40,876 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:05:40,877 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:05:40,877 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:05:40,882 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:05:40,896 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:05:40,897 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:05:40,897 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:05:40,898 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:05:40,898 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:05:40,898 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:05:40,898 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:05:40,899 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:05:40,899 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:05:40,899 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:05:40,899 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:05:40,899 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:05:40,900 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:05:40,900 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:05:40,900 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:05:40,900 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:05:40,900 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:05:40,901 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:05:40,901 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:05:40,901 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:05:40,901 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:05:40,901 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:05:40,902 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:05:40,902 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:05:40,902 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:05:40,902 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:05:40,902 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:05:40,902 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:05:40,945 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:05:40,958 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:05:40,962 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:05:40,963 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:05:40,964 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:05:40,965 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label35_true-unreach-call.c [2018-10-24 16:05:41,026 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e5be389d4/d38347e3e6754a53839550191caa92a0/FLAG609c7178d [2018-10-24 16:05:41,594 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:05:41,600 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label35_true-unreach-call.c [2018-10-24 16:05:41,630 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e5be389d4/d38347e3e6754a53839550191caa92a0/FLAG609c7178d [2018-10-24 16:05:41,655 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e5be389d4/d38347e3e6754a53839550191caa92a0 [2018-10-24 16:05:41,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:05:41,671 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:05:41,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:05:41,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:05:41,679 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:05:41,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:05:41" (1/1) ... [2018-10-24 16:05:41,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a17b170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:41, skipping insertion in model container [2018-10-24 16:05:41,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:05:41" (1/1) ... [2018-10-24 16:05:41,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:05:41,781 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:05:42,477 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:05:42,481 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:05:42,711 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:05:42,730 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:05:42,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:42 WrapperNode [2018-10-24 16:05:42,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:05:42,732 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:05:42,732 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:05:42,732 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:05:42,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:42" (1/1) ... [2018-10-24 16:05:42,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:42" (1/1) ... [2018-10-24 16:05:42,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:05:42,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:05:42,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:05:42,990 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:05:43,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:42" (1/1) ... [2018-10-24 16:05:43,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:42" (1/1) ... [2018-10-24 16:05:43,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:42" (1/1) ... [2018-10-24 16:05:43,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:42" (1/1) ... [2018-10-24 16:05:43,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:42" (1/1) ... [2018-10-24 16:05:43,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:42" (1/1) ... [2018-10-24 16:05:43,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:42" (1/1) ... [2018-10-24 16:05:43,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:05:43,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:05:43,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:05:43,126 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:05:43,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:05:43,189 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:05:43,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:05:43,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:05:47,595 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:05:47,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:05:47 BoogieIcfgContainer [2018-10-24 16:05:47,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:05:47,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:05:47,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:05:47,605 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:05:47,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:05:41" (1/3) ... [2018-10-24 16:05:47,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ffcd62b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:05:47, skipping insertion in model container [2018-10-24 16:05:47,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:42" (2/3) ... [2018-10-24 16:05:47,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ffcd62b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:05:47, skipping insertion in model container [2018-10-24 16:05:47,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:05:47" (3/3) ... [2018-10-24 16:05:47,612 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label35_true-unreach-call.c [2018-10-24 16:05:47,621 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:05:47,631 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:05:47,649 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:05:47,688 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:05:47,689 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:05:47,689 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:05:47,689 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:05:47,690 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:05:47,691 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:05:47,691 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:05:47,691 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:05:47,691 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:05:47,721 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2018-10-24 16:05:47,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-24 16:05:47,732 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:05:47,733 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:05:47,735 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:05:47,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:05:47,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1281577798, now seen corresponding path program 1 times [2018-10-24 16:05:47,743 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:05:47,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:05:47,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:47,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:47,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:05:48,303 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:05:48,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:05:48,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:05:48,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:05:48,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:05:48,331 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 4 states. [2018-10-24 16:05:51,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:05:51,565 INFO L93 Difference]: Finished difference Result 958 states and 1725 transitions. [2018-10-24 16:05:51,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:05:51,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-10-24 16:05:51,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:05:51,591 INFO L225 Difference]: With dead ends: 958 [2018-10-24 16:05:51,592 INFO L226 Difference]: Without dead ends: 667 [2018-10-24 16:05:51,597 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:05:51,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2018-10-24 16:05:51,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2018-10-24 16:05:51,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2018-10-24 16:05:51,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 983 transitions. [2018-10-24 16:05:51,709 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 983 transitions. Word has length 59 [2018-10-24 16:05:51,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:05:51,710 INFO L481 AbstractCegarLoop]: Abstraction has 667 states and 983 transitions. [2018-10-24 16:05:51,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:05:51,710 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 983 transitions. [2018-10-24 16:05:51,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-24 16:05:51,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:05:51,720 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:05:51,720 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:05:51,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:05:51,721 INFO L82 PathProgramCache]: Analyzing trace with hash -918079649, now seen corresponding path program 1 times [2018-10-24 16:05:51,721 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:05:51,721 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:05:51,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:51,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:51,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:52,118 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:05:52,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:05:52,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:05:52,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:05:52,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:05:52,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:05:52,121 INFO L87 Difference]: Start difference. First operand 667 states and 983 transitions. Second operand 5 states. [2018-10-24 16:05:57,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:05:57,871 INFO L93 Difference]: Finished difference Result 2465 states and 3702 transitions. [2018-10-24 16:05:57,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:05:57,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2018-10-24 16:05:57,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:05:57,883 INFO L225 Difference]: With dead ends: 2465 [2018-10-24 16:05:57,884 INFO L226 Difference]: Without dead ends: 1800 [2018-10-24 16:05:57,888 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:05:57,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2018-10-24 16:05:57,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1795. [2018-10-24 16:05:57,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1795 states. [2018-10-24 16:05:57,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2358 transitions. [2018-10-24 16:05:57,945 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2358 transitions. Word has length 129 [2018-10-24 16:05:57,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:05:57,946 INFO L481 AbstractCegarLoop]: Abstraction has 1795 states and 2358 transitions. [2018-10-24 16:05:57,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:05:57,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2358 transitions. [2018-10-24 16:05:57,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-24 16:05:57,962 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:05:57,963 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:05:57,965 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:05:57,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:05:57,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1989748220, now seen corresponding path program 1 times [2018-10-24 16:05:57,965 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:05:57,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:05:57,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:57,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:57,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:58,434 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:05:58,434 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:05:58,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:05:58,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:05:58,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:05:58,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:05:58,438 INFO L87 Difference]: Start difference. First operand 1795 states and 2358 transitions. Second operand 4 states. [2018-10-24 16:06:01,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:06:01,648 INFO L93 Difference]: Finished difference Result 6759 states and 8947 transitions. [2018-10-24 16:06:01,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:06:01,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 187 [2018-10-24 16:06:01,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:06:01,674 INFO L225 Difference]: With dead ends: 6759 [2018-10-24 16:06:01,674 INFO L226 Difference]: Without dead ends: 4966 [2018-10-24 16:06:01,678 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:06:01,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4966 states. [2018-10-24 16:06:01,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4966 to 4389. [2018-10-24 16:06:01,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4389 states. [2018-10-24 16:06:01,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4389 states to 4389 states and 5560 transitions. [2018-10-24 16:06:01,765 INFO L78 Accepts]: Start accepts. Automaton has 4389 states and 5560 transitions. Word has length 187 [2018-10-24 16:06:01,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:06:01,766 INFO L481 AbstractCegarLoop]: Abstraction has 4389 states and 5560 transitions. [2018-10-24 16:06:01,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:06:01,766 INFO L276 IsEmpty]: Start isEmpty. Operand 4389 states and 5560 transitions. [2018-10-24 16:06:01,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-10-24 16:06:01,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:06:01,774 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:06:01,774 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:06:01,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:06:01,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1397134196, now seen corresponding path program 1 times [2018-10-24 16:06:01,775 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:06:01,775 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:06:01,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:01,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:06:01,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:06:02,047 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 16:06:02,128 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-10-24 16:06:02,128 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:06:02,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:06:02,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:06:02,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:06:02,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:06:02,130 INFO L87 Difference]: Start difference. First operand 4389 states and 5560 transitions. Second operand 4 states. [2018-10-24 16:06:09,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:06:09,307 INFO L93 Difference]: Finished difference Result 10828 states and 13764 transitions. [2018-10-24 16:06:09,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:06:09,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 256 [2018-10-24 16:06:09,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:06:09,339 INFO L225 Difference]: With dead ends: 10828 [2018-10-24 16:06:09,339 INFO L226 Difference]: Without dead ends: 6441 [2018-10-24 16:06:09,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:06:09,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6441 states. [2018-10-24 16:06:09,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6441 to 6238. [2018-10-24 16:06:09,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6238 states. [2018-10-24 16:06:09,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 7579 transitions. [2018-10-24 16:06:09,446 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 7579 transitions. Word has length 256 [2018-10-24 16:06:09,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:06:09,447 INFO L481 AbstractCegarLoop]: Abstraction has 6238 states and 7579 transitions. [2018-10-24 16:06:09,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:06:09,447 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 7579 transitions. [2018-10-24 16:06:09,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-10-24 16:06:09,455 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:06:09,455 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:06:09,456 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:06:09,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:06:09,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1341410710, now seen corresponding path program 1 times [2018-10-24 16:06:09,456 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:06:09,456 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:06:09,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:09,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:06:09,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:06:09,734 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-24 16:06:09,735 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:06:09,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:06:09,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:06:09,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:06:09,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:06:09,737 INFO L87 Difference]: Start difference. First operand 6238 states and 7579 transitions. Second operand 3 states. [2018-10-24 16:06:11,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:06:11,747 INFO L93 Difference]: Finished difference Result 13213 states and 16347 transitions. [2018-10-24 16:06:11,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:06:11,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 275 [2018-10-24 16:06:11,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:06:11,778 INFO L225 Difference]: With dead ends: 13213 [2018-10-24 16:06:11,778 INFO L226 Difference]: Without dead ends: 6977 [2018-10-24 16:06:11,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:06:11,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6977 states. [2018-10-24 16:06:11,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6977 to 6977. [2018-10-24 16:06:11,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6977 states. [2018-10-24 16:06:11,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6977 states to 6977 states and 8521 transitions. [2018-10-24 16:06:11,893 INFO L78 Accepts]: Start accepts. Automaton has 6977 states and 8521 transitions. Word has length 275 [2018-10-24 16:06:11,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:06:11,893 INFO L481 AbstractCegarLoop]: Abstraction has 6977 states and 8521 transitions. [2018-10-24 16:06:11,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:06:11,894 INFO L276 IsEmpty]: Start isEmpty. Operand 6977 states and 8521 transitions. [2018-10-24 16:06:11,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-24 16:06:11,902 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:06:11,903 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:06:11,903 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:06:11,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:06:11,903 INFO L82 PathProgramCache]: Analyzing trace with hash 145349327, now seen corresponding path program 1 times [2018-10-24 16:06:11,904 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:06:11,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:06:11,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:11,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:06:11,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:06:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:06:12,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:06:12,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:06:12,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:06:12,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:06:12,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:06:12,315 INFO L87 Difference]: Start difference. First operand 6977 states and 8521 transitions. Second operand 5 states. [2018-10-24 16:06:15,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:06:15,452 INFO L93 Difference]: Finished difference Result 16009 states and 19915 transitions. [2018-10-24 16:06:15,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:06:15,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 278 [2018-10-24 16:06:15,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:06:15,486 INFO L225 Difference]: With dead ends: 16009 [2018-10-24 16:06:15,487 INFO L226 Difference]: Without dead ends: 9034 [2018-10-24 16:06:15,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:06:15,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9034 states. [2018-10-24 16:06:15,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9034 to 8647. [2018-10-24 16:06:15,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8647 states. [2018-10-24 16:06:15,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8647 states to 8647 states and 10537 transitions. [2018-10-24 16:06:15,608 INFO L78 Accepts]: Start accepts. Automaton has 8647 states and 10537 transitions. Word has length 278 [2018-10-24 16:06:15,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:06:15,609 INFO L481 AbstractCegarLoop]: Abstraction has 8647 states and 10537 transitions. [2018-10-24 16:06:15,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:06:15,609 INFO L276 IsEmpty]: Start isEmpty. Operand 8647 states and 10537 transitions. [2018-10-24 16:06:15,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-10-24 16:06:15,618 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:06:15,619 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:06:15,619 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:06:15,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:06:15,619 INFO L82 PathProgramCache]: Analyzing trace with hash 62645169, now seen corresponding path program 1 times [2018-10-24 16:06:15,620 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:06:15,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:06:15,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:15,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:06:15,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:06:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:06:16,072 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:06:16,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:06:16,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:06:16,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:06:16,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:06:16,074 INFO L87 Difference]: Start difference. First operand 8647 states and 10537 transitions. Second operand 4 states. [2018-10-24 16:06:18,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:06:18,438 INFO L93 Difference]: Finished difference Result 20439 states and 25150 transitions. [2018-10-24 16:06:18,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:06:18,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 294 [2018-10-24 16:06:18,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:06:18,461 INFO L225 Difference]: With dead ends: 20439 [2018-10-24 16:06:18,462 INFO L226 Difference]: Without dead ends: 10856 [2018-10-24 16:06:18,472 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:06:18,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10856 states. [2018-10-24 16:06:18,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10856 to 10665. [2018-10-24 16:06:18,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10665 states. [2018-10-24 16:06:18,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10665 states to 10665 states and 12552 transitions. [2018-10-24 16:06:18,595 INFO L78 Accepts]: Start accepts. Automaton has 10665 states and 12552 transitions. Word has length 294 [2018-10-24 16:06:18,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:06:18,595 INFO L481 AbstractCegarLoop]: Abstraction has 10665 states and 12552 transitions. [2018-10-24 16:06:18,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:06:18,596 INFO L276 IsEmpty]: Start isEmpty. Operand 10665 states and 12552 transitions. [2018-10-24 16:06:18,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-10-24 16:06:18,611 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:06:18,611 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:06:18,612 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:06:18,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:06:18,612 INFO L82 PathProgramCache]: Analyzing trace with hash 543159351, now seen corresponding path program 1 times [2018-10-24 16:06:18,612 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:06:18,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:06:18,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:18,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:06:18,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:06:18,977 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-10-24 16:06:18,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:06:18,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:06:18,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:06:18,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:06:18,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:06:18,979 INFO L87 Difference]: Start difference. First operand 10665 states and 12552 transitions. Second operand 4 states. [2018-10-24 16:06:22,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:06:22,022 INFO L93 Difference]: Finished difference Result 21716 states and 25512 transitions. [2018-10-24 16:06:22,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:06:22,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 344 [2018-10-24 16:06:22,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:06:22,042 INFO L225 Difference]: With dead ends: 21716 [2018-10-24 16:06:22,043 INFO L226 Difference]: Without dead ends: 10864 [2018-10-24 16:06:22,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:06:22,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10864 states. [2018-10-24 16:06:22,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10864 to 10291. [2018-10-24 16:06:22,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10291 states. [2018-10-24 16:06:22,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10291 states to 10291 states and 11864 transitions. [2018-10-24 16:06:22,177 INFO L78 Accepts]: Start accepts. Automaton has 10291 states and 11864 transitions. Word has length 344 [2018-10-24 16:06:22,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:06:22,177 INFO L481 AbstractCegarLoop]: Abstraction has 10291 states and 11864 transitions. [2018-10-24 16:06:22,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:06:22,178 INFO L276 IsEmpty]: Start isEmpty. Operand 10291 states and 11864 transitions. [2018-10-24 16:06:22,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-10-24 16:06:22,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:06:22,189 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:06:22,189 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:06:22,190 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:06:22,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1626505021, now seen corresponding path program 1 times [2018-10-24 16:06:22,190 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:06:22,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:06:22,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:22,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:06:22,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:06:23,287 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 125 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:06:23,288 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:06:23,288 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:06:23,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:06:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:06:23,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:06:24,145 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 20 [2018-10-24 16:06:24,595 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 181 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:06:24,633 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:06:24,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2018-10-24 16:06:24,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 16:06:24,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 16:06:24,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-24 16:06:24,636 INFO L87 Difference]: Start difference. First operand 10291 states and 11864 transitions. Second operand 10 states. [2018-10-24 16:06:40,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:06:40,057 INFO L93 Difference]: Finished difference Result 38231 states and 43890 transitions. [2018-10-24 16:06:40,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 16:06:40,058 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 359 [2018-10-24 16:06:40,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:06:40,110 INFO L225 Difference]: With dead ends: 38231 [2018-10-24 16:06:40,111 INFO L226 Difference]: Without dead ends: 26825 [2018-10-24 16:06:40,125 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 363 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2018-10-24 16:06:40,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26825 states. [2018-10-24 16:06:40,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26825 to 16404. [2018-10-24 16:06:40,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16404 states. [2018-10-24 16:06:40,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16404 states to 16404 states and 18427 transitions. [2018-10-24 16:06:40,428 INFO L78 Accepts]: Start accepts. Automaton has 16404 states and 18427 transitions. Word has length 359 [2018-10-24 16:06:40,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:06:40,431 INFO L481 AbstractCegarLoop]: Abstraction has 16404 states and 18427 transitions. [2018-10-24 16:06:40,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 16:06:40,431 INFO L276 IsEmpty]: Start isEmpty. Operand 16404 states and 18427 transitions. [2018-10-24 16:06:40,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-10-24 16:06:40,449 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:06:40,450 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:06:40,450 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:06:40,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:06:40,451 INFO L82 PathProgramCache]: Analyzing trace with hash 45905770, now seen corresponding path program 1 times [2018-10-24 16:06:40,451 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:06:40,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:06:40,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:40,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:06:40,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:06:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 294 proven. 97 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-10-24 16:06:40,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:06:40,946 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:06:40,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:06:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:06:41,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:06:41,699 WARN L179 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 32 [2018-10-24 16:06:42,575 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 196 proven. 155 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-10-24 16:06:42,597 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:06:42,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2018-10-24 16:06:42,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:06:42,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:06:42,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:06:42,599 INFO L87 Difference]: Start difference. First operand 16404 states and 18427 transitions. Second operand 9 states. [2018-10-24 16:06:55,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:06:55,819 INFO L93 Difference]: Finished difference Result 43029 states and 48466 transitions. [2018-10-24 16:06:55,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-24 16:06:55,820 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 361 [2018-10-24 16:06:55,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:06:55,867 INFO L225 Difference]: With dead ends: 43029 [2018-10-24 16:06:55,868 INFO L226 Difference]: Without dead ends: 26254 [2018-10-24 16:06:55,888 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2018-10-24 16:06:55,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26254 states. [2018-10-24 16:06:56,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26254 to 13605. [2018-10-24 16:06:56,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13605 states. [2018-10-24 16:06:56,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13605 states to 13605 states and 15029 transitions. [2018-10-24 16:06:56,138 INFO L78 Accepts]: Start accepts. Automaton has 13605 states and 15029 transitions. Word has length 361 [2018-10-24 16:06:56,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:06:56,139 INFO L481 AbstractCegarLoop]: Abstraction has 13605 states and 15029 transitions. [2018-10-24 16:06:56,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:06:56,139 INFO L276 IsEmpty]: Start isEmpty. Operand 13605 states and 15029 transitions. [2018-10-24 16:06:56,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2018-10-24 16:06:56,156 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:06:56,157 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:06:56,157 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:06:56,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:06:56,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1268095058, now seen corresponding path program 1 times [2018-10-24 16:06:56,157 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:06:56,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:06:56,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:56,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:06:56,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:56,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:06:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 148 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:06:56,707 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:06:56,707 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:06:56,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:06:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:06:56,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:06:59,363 WARN L179 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 43 DAG size of output: 19 [2018-10-24 16:07:00,430 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 261 proven. 233 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:07:00,451 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:07:00,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2018-10-24 16:07:00,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 16:07:00,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 16:07:00,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=62, Unknown=1, NotChecked=0, Total=90 [2018-10-24 16:07:00,453 INFO L87 Difference]: Start difference. First operand 13605 states and 15029 transitions. Second operand 10 states. [2018-10-24 16:07:01,842 WARN L179 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-24 16:07:11,923 WARN L179 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 Received shutdown request... [2018-10-24 16:09:56,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-24 16:09:56,506 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:09:56,512 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:09:56,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:09:56 BoogieIcfgContainer [2018-10-24 16:09:56,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:09:56,513 INFO L168 Benchmark]: Toolchain (without parser) took 254844.11 ms. Allocated memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: 1.6 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 16:09:56,514 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:09:56,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1057.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:09:56,515 INFO L168 Benchmark]: Boogie Procedure Inliner took 257.44 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 724.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -818.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:09:56,518 INFO L168 Benchmark]: Boogie Preprocessor took 135.51 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:09:56,518 INFO L168 Benchmark]: RCFGBuilder took 4471.02 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 199.6 MB). Peak memory consumption was 199.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:09:56,519 INFO L168 Benchmark]: TraceAbstraction took 248914.96 ms. Allocated memory was 2.2 GB in the beginning and 3.1 GB in the end (delta: 887.6 MB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-24 16:09:56,527 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1057.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 257.44 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 724.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -818.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.51 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4471.02 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 199.6 MB). Peak memory consumption was 199.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 248914.96 ms. Allocated memory was 2.2 GB in the beginning and 3.1 GB in the end (delta: 887.6 MB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 180]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 180). Cancelled while BasicCegarLoop was constructing difference of abstraction (13605states) and FLOYD_HOARE automaton (currently 19 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (11055 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 284 locations, 1 error locations. TIMEOUT Result, 248.8s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 235.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2671 SDtfs, 11837 SDslu, 2172 SDs, 0 SdLazy, 27527 SolverSat, 5283 SolverUnsat, 220 SolverUnknown, 0 SolverNotchecked, 222.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1268 GetRequests, 1186 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 10.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16404occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 25006 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 4176 NumberOfCodeBlocks, 4176 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 4162 ConstructedInterpolants, 411 QuantifiedInterpolants, 9608542 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1524 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 2679/3680 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown