java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label37_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 15:40:44,756 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 15:40:44,759 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 15:40:44,772 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 15:40:44,773 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 15:40:44,774 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 15:40:44,775 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 15:40:44,777 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 15:40:44,778 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 15:40:44,779 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 15:40:44,781 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 15:40:44,781 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 15:40:44,782 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 15:40:44,783 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 15:40:44,783 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 15:40:44,786 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 15:40:44,787 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 15:40:44,788 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 15:40:44,798 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 15:40:44,800 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 15:40:44,801 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 15:40:44,801 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 15:40:44,803 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-22 15:40:44,818 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-22 15:40:44,840 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 15:40:44,841 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 15:40:44,841 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 15:40:44,843 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 15:40:44,844 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 15:40:44,844 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 15:40:44,844 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 15:40:44,844 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 15:40:44,844 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 15:40:44,845 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 15:40:44,845 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 15:40:44,845 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 15:40:44,845 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 15:40:44,845 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 15:40:44,846 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 15:40:44,846 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 15:40:44,846 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 15:40:44,846 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 15:40:44,846 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 15:40:44,846 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 15:40:44,848 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 15:40:44,848 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 15:40:44,848 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 15:40:44,848 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 15:40:44,848 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 15:40:44,848 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 15:40:44,849 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 15:40:44,849 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 15:40:44,849 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 15:40:44,903 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 15:40:44,920 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 15:40:44,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 15:40:44,926 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 15:40:44,927 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 15:40:44,927 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label37_true-unreach-call.c [2018-07-22 15:40:45,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/b8101d827/bed9cdc56af74d74946d10881a7eff2d/FLAG70e3a10cc [2018-07-22 15:40:45,989 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 15:40:45,990 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label37_true-unreach-call.c [2018-07-22 15:40:46,069 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/b8101d827/bed9cdc56af74d74946d10881a7eff2d/FLAG70e3a10cc [2018-07-22 15:40:46,091 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/b8101d827/bed9cdc56af74d74946d10881a7eff2d [2018-07-22 15:40:46,103 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 15:40:46,110 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 15:40:46,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 15:40:46,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 15:40:46,120 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 15:40:46,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:40:46" (1/1) ... [2018-07-22 15:40:46,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b3bdfb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:40:46, skipping insertion in model container [2018-07-22 15:40:46,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:40:46" (1/1) ... [2018-07-22 15:40:46,638 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 15:40:48,738 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 15:40:48,759 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 15:40:50,309 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 15:40:50,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:40:50 WrapperNode [2018-07-22 15:40:50,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 15:40:50,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 15:40:50,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 15:40:50,798 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 15:40:50,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:40:50" (1/1) ... [2018-07-22 15:40:50,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:40:50" (1/1) ... [2018-07-22 15:40:52,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 15:40:52,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 15:40:52,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 15:40:52,650 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 15:40:52,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:40:50" (1/1) ... [2018-07-22 15:40:52,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:40:50" (1/1) ... [2018-07-22 15:40:52,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:40:50" (1/1) ... [2018-07-22 15:40:52,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:40:50" (1/1) ... [2018-07-22 15:40:53,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:40:50" (1/1) ... [2018-07-22 15:40:53,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:40:50" (1/1) ... [2018-07-22 15:40:53,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:40:50" (1/1) ... [2018-07-22 15:40:53,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 15:40:53,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 15:40:53,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 15:40:53,626 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 15:40:53,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:40:50" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 15:40:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 15:40:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 15:40:53,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 15:41:12,377 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 15:41:12,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:41:12 BoogieIcfgContainer [2018-07-22 15:41:12,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 15:41:12,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 15:41:12,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 15:41:12,392 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 15:41:12,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 03:40:46" (1/3) ... [2018-07-22 15:41:12,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77af8b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:41:12, skipping insertion in model container [2018-07-22 15:41:12,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:40:50" (2/3) ... [2018-07-22 15:41:12,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77af8b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:41:12, skipping insertion in model container [2018-07-22 15:41:12,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:41:12" (3/3) ... [2018-07-22 15:41:12,398 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label37_true-unreach-call.c [2018-07-22 15:41:12,411 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 15:41:12,427 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 15:41:12,518 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 15:41:12,519 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 15:41:12,519 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 15:41:12,519 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 15:41:12,519 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 15:41:12,519 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 15:41:12,520 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 15:41:12,520 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 15:41:12,520 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 15:41:12,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-07-22 15:41:12,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-22 15:41:12,588 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:41:12,590 INFO L358 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] [2018-07-22 15:41:12,590 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:41:12,596 INFO L82 PathProgramCache]: Analyzing trace with hash 861450858, now seen corresponding path program 1 times [2018-07-22 15:41:12,598 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:41:12,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:41:12,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:41:12,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:41:12,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:41:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:41:12,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 15:41:12,967 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:41:12,967 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 15:41:12,970 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 15:41:12,984 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 15:41:12,985 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:41:12,988 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-07-22 15:41:31,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:41:31,677 INFO L93 Difference]: Finished difference Result 6326 states and 12085 transitions. [2018-07-22 15:41:31,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 15:41:31,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-07-22 15:41:31,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:41:31,735 INFO L225 Difference]: With dead ends: 6326 [2018-07-22 15:41:31,735 INFO L226 Difference]: Without dead ends: 4570 [2018-07-22 15:41:31,745 INFO L578 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 [2018-07-22 15:41:31,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2018-07-22 15:41:31,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 4564. [2018-07-22 15:41:31,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4564 states. [2018-07-22 15:41:32,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 7499 transitions. [2018-07-22 15:41:32,013 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 7499 transitions. Word has length 39 [2018-07-22 15:41:32,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:41:32,014 INFO L471 AbstractCegarLoop]: Abstraction has 4564 states and 7499 transitions. [2018-07-22 15:41:32,014 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 15:41:32,014 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 7499 transitions. [2018-07-22 15:41:32,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-22 15:41:32,021 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:41:32,022 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 15:41:32,022 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:41:32,023 INFO L82 PathProgramCache]: Analyzing trace with hash 135360988, now seen corresponding path program 1 times [2018-07-22 15:41:32,023 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:41:32,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:41:32,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:41:32,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:41:32,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:41:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:41:32,356 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 15:41:32,356 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:41:32,356 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 15:41:32,359 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 15:41:32,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 15:41:32,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:41:32,360 INFO L87 Difference]: Start difference. First operand 4564 states and 7499 transitions. Second operand 4 states. [2018-07-22 15:41:55,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:41:55,785 INFO L93 Difference]: Finished difference Result 17552 states and 29056 transitions. [2018-07-22 15:41:55,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 15:41:55,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2018-07-22 15:41:55,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:41:55,850 INFO L225 Difference]: With dead ends: 17552 [2018-07-22 15:41:55,851 INFO L226 Difference]: Without dead ends: 12990 [2018-07-22 15:41:55,858 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:41:55,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2018-07-22 15:41:56,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 8666. [2018-07-22 15:41:56,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8666 states. [2018-07-22 15:41:56,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8666 states to 8666 states and 13862 transitions. [2018-07-22 15:41:56,107 INFO L78 Accepts]: Start accepts. Automaton has 8666 states and 13862 transitions. Word has length 143 [2018-07-22 15:41:56,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:41:56,109 INFO L471 AbstractCegarLoop]: Abstraction has 8666 states and 13862 transitions. [2018-07-22 15:41:56,110 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 15:41:56,110 INFO L276 IsEmpty]: Start isEmpty. Operand 8666 states and 13862 transitions. [2018-07-22 15:41:56,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-22 15:41:56,113 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:41:56,120 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 15:41:56,120 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:41:56,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1896301798, now seen corresponding path program 1 times [2018-07-22 15:41:56,121 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:41:56,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:41:56,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:41:56,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:41:56,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:41:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:41:56,523 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 15:41:56,523 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:41:56,524 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 15:41:56,524 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 15:41:56,525 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 15:41:56,525 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:41:56,525 INFO L87 Difference]: Start difference. First operand 8666 states and 13862 transitions. Second operand 4 states. [2018-07-22 15:42:09,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:42:09,455 INFO L93 Difference]: Finished difference Result 33977 states and 54582 transitions. [2018-07-22 15:42:09,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 15:42:09,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2018-07-22 15:42:09,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:42:09,538 INFO L225 Difference]: With dead ends: 33977 [2018-07-22 15:42:09,538 INFO L226 Difference]: Without dead ends: 25313 [2018-07-22 15:42:09,554 INFO L578 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 [2018-07-22 15:42:09,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25313 states. [2018-07-22 15:42:09,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25313 to 16861. [2018-07-22 15:42:09,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16861 states. [2018-07-22 15:42:09,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16861 states to 16861 states and 23360 transitions. [2018-07-22 15:42:09,925 INFO L78 Accepts]: Start accepts. Automaton has 16861 states and 23360 transitions. Word has length 147 [2018-07-22 15:42:09,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:42:09,926 INFO L471 AbstractCegarLoop]: Abstraction has 16861 states and 23360 transitions. [2018-07-22 15:42:09,926 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 15:42:09,926 INFO L276 IsEmpty]: Start isEmpty. Operand 16861 states and 23360 transitions. [2018-07-22 15:42:09,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-22 15:42:09,929 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:42:09,935 INFO L358 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 15:42:09,935 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:42:09,935 INFO L82 PathProgramCache]: Analyzing trace with hash 99802171, now seen corresponding path program 1 times [2018-07-22 15:42:09,935 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:42:09,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:42:09,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:42:09,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:42:09,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:42:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:42:10,332 WARN L169 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-07-22 15:42:10,573 WARN L169 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-07-22 15:42:10,749 WARN L169 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 23 [2018-07-22 15:42:10,851 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-07-22 15:42:10,851 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:42:10,852 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-22 15:42:10,852 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-22 15:42:10,852 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-22 15:42:10,852 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-22 15:42:10,853 INFO L87 Difference]: Start difference. First operand 16861 states and 23360 transitions. Second operand 6 states. [2018-07-22 15:42:32,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:42:32,842 INFO L93 Difference]: Finished difference Result 54270 states and 73859 transitions. [2018-07-22 15:42:32,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-22 15:42:32,842 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 230 [2018-07-22 15:42:32,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:42:32,913 INFO L225 Difference]: With dead ends: 54270 [2018-07-22 15:42:32,914 INFO L226 Difference]: Without dead ends: 37411 [2018-07-22 15:42:32,931 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-07-22 15:42:32,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37411 states. [2018-07-22 15:42:33,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37411 to 35992. [2018-07-22 15:42:33,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35992 states. [2018-07-22 15:42:33,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35992 states to 35992 states and 48343 transitions. [2018-07-22 15:42:33,460 INFO L78 Accepts]: Start accepts. Automaton has 35992 states and 48343 transitions. Word has length 230 [2018-07-22 15:42:33,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:42:33,460 INFO L471 AbstractCegarLoop]: Abstraction has 35992 states and 48343 transitions. [2018-07-22 15:42:33,460 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-22 15:42:33,460 INFO L276 IsEmpty]: Start isEmpty. Operand 35992 states and 48343 transitions. [2018-07-22 15:42:33,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-07-22 15:42:33,470 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:42:33,470 INFO L358 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 15:42:33,470 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:42:33,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1377003563, now seen corresponding path program 1 times [2018-07-22 15:42:33,471 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:42:33,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:42:33,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:42:33,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:42:33,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:42:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:42:33,884 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 15:42:33,886 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:42:33,886 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 15:42:33,886 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 15:42:33,887 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 15:42:33,887 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:42:33,887 INFO L87 Difference]: Start difference. First operand 35992 states and 48343 transitions. Second operand 4 states. [2018-07-22 15:42:51,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:42:51,871 INFO L93 Difference]: Finished difference Result 93846 states and 128304 transitions. [2018-07-22 15:42:51,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 15:42:51,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 361 [2018-07-22 15:42:51,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:42:51,948 INFO L225 Difference]: With dead ends: 93846 [2018-07-22 15:42:51,948 INFO L226 Difference]: Without dead ends: 57856 [2018-07-22 15:42:51,984 INFO L578 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 [2018-07-22 15:42:52,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57856 states. [2018-07-22 15:42:52,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57856 to 57850. [2018-07-22 15:42:52,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57850 states. [2018-07-22 15:42:52,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57850 states to 57850 states and 73763 transitions. [2018-07-22 15:42:52,560 INFO L78 Accepts]: Start accepts. Automaton has 57850 states and 73763 transitions. Word has length 361 [2018-07-22 15:42:52,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:42:52,561 INFO L471 AbstractCegarLoop]: Abstraction has 57850 states and 73763 transitions. [2018-07-22 15:42:52,562 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 15:42:52,562 INFO L276 IsEmpty]: Start isEmpty. Operand 57850 states and 73763 transitions. [2018-07-22 15:42:52,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2018-07-22 15:42:52,596 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:42:52,596 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 15:42:52,598 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:42:52,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1199841471, now seen corresponding path program 1 times [2018-07-22 15:42:52,599 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:42:52,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:42:52,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:42:52,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:42:52,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:42:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:42:53,614 WARN L169 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-07-22 15:42:54,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 647 proven. 4 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2018-07-22 15:42:54,558 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 15:42:54,558 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 15:42:54,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:42:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:42:54,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 15:42:55,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 651 proven. 0 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2018-07-22 15:42:55,491 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 15:42:55,491 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-07-22 15:42:55,492 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 15:42:55,492 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 15:42:55,492 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-22 15:42:55,493 INFO L87 Difference]: Start difference. First operand 57850 states and 73763 transitions. Second operand 5 states. [2018-07-22 15:43:12,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:43:12,919 INFO L93 Difference]: Finished difference Result 128025 states and 160498 transitions. [2018-07-22 15:43:12,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-22 15:43:12,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 812 [2018-07-22 15:43:12,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:43:13,024 INFO L225 Difference]: With dead ends: 128025 [2018-07-22 15:43:13,024 INFO L226 Difference]: Without dead ends: 66042 [2018-07-22 15:43:13,058 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 812 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-22 15:43:13,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66042 states. [2018-07-22 15:43:14,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66042 to 64675. [2018-07-22 15:43:14,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64675 states. [2018-07-22 15:43:14,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64675 states to 64675 states and 75320 transitions. [2018-07-22 15:43:14,143 INFO L78 Accepts]: Start accepts. Automaton has 64675 states and 75320 transitions. Word has length 812 [2018-07-22 15:43:14,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:43:14,144 INFO L471 AbstractCegarLoop]: Abstraction has 64675 states and 75320 transitions. [2018-07-22 15:43:14,144 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 15:43:14,144 INFO L276 IsEmpty]: Start isEmpty. Operand 64675 states and 75320 transitions. [2018-07-22 15:43:14,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2018-07-22 15:43:14,174 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:43:14,175 INFO L358 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 15:43:14,175 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:43:14,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1839948970, now seen corresponding path program 1 times [2018-07-22 15:43:14,176 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:43:14,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:43:14,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:43:14,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:43:14,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:43:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:43:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 281 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-07-22 15:43:15,345 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:43:15,346 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-22 15:43:15,346 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 15:43:15,346 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 15:43:15,347 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 15:43:15,347 INFO L87 Difference]: Start difference. First operand 64675 states and 75320 transitions. Second operand 5 states. [2018-07-22 15:43:33,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:43:33,668 INFO L93 Difference]: Finished difference Result 255126 states and 296976 transitions. [2018-07-22 15:43:33,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 15:43:33,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 826 [2018-07-22 15:43:33,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:43:33,929 INFO L225 Difference]: With dead ends: 255126 [2018-07-22 15:43:33,929 INFO L226 Difference]: Without dead ends: 190453 [2018-07-22 15:43:33,984 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 15:43:34,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190453 states. [2018-07-22 15:43:39,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190453 to 180822. [2018-07-22 15:43:39,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180822 states. [2018-07-22 15:43:39,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180822 states to 180822 states and 201421 transitions. [2018-07-22 15:43:39,756 INFO L78 Accepts]: Start accepts. Automaton has 180822 states and 201421 transitions. Word has length 826 [2018-07-22 15:43:39,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:43:39,757 INFO L471 AbstractCegarLoop]: Abstraction has 180822 states and 201421 transitions. [2018-07-22 15:43:39,757 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 15:43:39,758 INFO L276 IsEmpty]: Start isEmpty. Operand 180822 states and 201421 transitions. [2018-07-22 15:43:39,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 895 [2018-07-22 15:43:39,768 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:43:39,769 INFO L358 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 15:43:39,769 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:43:39,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1629305439, now seen corresponding path program 1 times [2018-07-22 15:43:39,770 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:43:39,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:43:39,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:43:39,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:43:39,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:43:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:43:41,289 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-07-22 15:43:41,290 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:43:41,290 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 15:43:41,291 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 15:43:41,291 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 15:43:41,291 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:43:41,291 INFO L87 Difference]: Start difference. First operand 180822 states and 201421 transitions. Second operand 4 states. [2018-07-22 15:43:51,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:43:51,694 INFO L93 Difference]: Finished difference Result 361645 states and 402848 transitions. [2018-07-22 15:43:51,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 15:43:51,695 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 894 [2018-07-22 15:43:51,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:43:51,926 INFO L225 Difference]: With dead ends: 361645 [2018-07-22 15:43:51,926 INFO L226 Difference]: Without dead ends: 180825 [2018-07-22 15:43:52,013 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:43:52,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180825 states. [2018-07-22 15:43:54,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180825 to 171254. [2018-07-22 15:43:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171254 states. [2018-07-22 15:43:54,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171254 states to 171254 states and 184823 transitions. [2018-07-22 15:43:54,352 INFO L78 Accepts]: Start accepts. Automaton has 171254 states and 184823 transitions. Word has length 894 [2018-07-22 15:43:54,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:43:54,354 INFO L471 AbstractCegarLoop]: Abstraction has 171254 states and 184823 transitions. [2018-07-22 15:43:54,354 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 15:43:54,354 INFO L276 IsEmpty]: Start isEmpty. Operand 171254 states and 184823 transitions. [2018-07-22 15:43:54,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 990 [2018-07-22 15:43:54,369 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:43:54,370 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 15:43:54,370 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:43:54,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1483905224, now seen corresponding path program 1 times [2018-07-22 15:43:54,371 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:43:54,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:43:54,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:43:54,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:43:54,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:43:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:43:59,589 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2018-07-22 15:43:59,589 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:43:59,589 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-22 15:43:59,590 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 15:43:59,590 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 15:43:59,590 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 15:43:59,590 INFO L87 Difference]: Start difference. First operand 171254 states and 184823 transitions. Second operand 5 states. [2018-07-22 15:44:13,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:44:13,059 INFO L93 Difference]: Finished difference Result 453159 states and 493972 transitions. [2018-07-22 15:44:13,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 15:44:13,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 989 [2018-07-22 15:44:13,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:44:13,723 INFO L225 Difference]: With dead ends: 453159 [2018-07-22 15:44:13,723 INFO L226 Difference]: Without dead ends: 281907 [2018-07-22 15:44:13,820 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 15:44:13,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281907 states. [2018-07-22 15:44:15,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281907 to 227254. [2018-07-22 15:44:15,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227254 states. [2018-07-22 15:44:16,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227254 states to 227254 states and 244586 transitions. [2018-07-22 15:44:16,190 INFO L78 Accepts]: Start accepts. Automaton has 227254 states and 244586 transitions. Word has length 989 [2018-07-22 15:44:16,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:44:16,191 INFO L471 AbstractCegarLoop]: Abstraction has 227254 states and 244586 transitions. [2018-07-22 15:44:16,191 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 15:44:16,191 INFO L276 IsEmpty]: Start isEmpty. Operand 227254 states and 244586 transitions. [2018-07-22 15:44:16,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1080 [2018-07-22 15:44:16,204 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:44:16,204 INFO L358 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 15:44:16,205 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:44:16,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1586621396, now seen corresponding path program 1 times [2018-07-22 15:44:16,205 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:44:16,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:44:16,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:44:16,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:44:16,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:44:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:44:18,430 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-07-22 15:44:18,430 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:44:18,430 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 15:44:18,431 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 15:44:18,431 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 15:44:18,431 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:44:18,432 INFO L87 Difference]: Start difference. First operand 227254 states and 244586 transitions. Second operand 4 states. Received shutdown request... [2018-07-22 15:44:31,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 15:44:31,119 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-22 15:44:31,126 WARN L202 ceAbstractionStarter]: Timeout [2018-07-22 15:44:31,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 03:44:31 BoogieIcfgContainer [2018-07-22 15:44:31,126 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-22 15:44:31,127 INFO L168 Benchmark]: Toolchain (without parser) took 225024.17 ms. Allocated memory was 306.7 MB in the beginning and 2.7 GB in the end (delta: 2.4 GB). Free memory was 224.7 MB in the beginning and 772.3 MB in the end (delta: -547.6 MB). Peak memory consumption was 1.8 GB. Max. memory is 5.3 GB. [2018-07-22 15:44:31,128 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 306.7 MB. Free memory is still 271.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-22 15:44:31,129 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4684.65 ms. Allocated memory was 306.7 MB in the beginning and 394.8 MB in the end (delta: 88.1 MB). Free memory was 224.7 MB in the beginning and 127.5 MB in the end (delta: 97.2 MB). Peak memory consumption was 218.7 MB. Max. memory is 5.3 GB. [2018-07-22 15:44:31,129 INFO L168 Benchmark]: Boogie Procedure Inliner took 1851.67 ms. Allocated memory was 394.8 MB in the beginning and 689.4 MB in the end (delta: 294.6 MB). Free memory was 127.5 MB in the beginning and 412.0 MB in the end (delta: -284.5 MB). Peak memory consumption was 112.2 MB. Max. memory is 5.3 GB. [2018-07-22 15:44:31,130 INFO L168 Benchmark]: Boogie Preprocessor took 975.83 ms. Allocated memory was 689.4 MB in the beginning and 869.8 MB in the end (delta: 180.4 MB). Free memory was 412.0 MB in the beginning and 580.2 MB in the end (delta: -168.2 MB). Peak memory consumption was 169.3 MB. Max. memory is 5.3 GB. [2018-07-22 15:44:31,132 INFO L168 Benchmark]: RCFGBuilder took 18752.56 ms. Allocated memory was 869.8 MB in the beginning and 1.2 GB in the end (delta: 351.8 MB). Free memory was 580.2 MB in the beginning and 823.3 MB in the end (delta: -243.0 MB). Peak memory consumption was 560.4 MB. Max. memory is 5.3 GB. [2018-07-22 15:44:31,133 INFO L168 Benchmark]: TraceAbstraction took 198747.07 ms. Allocated memory was 1.2 GB in the beginning and 2.7 GB in the end (delta: 1.5 GB). Free memory was 823.3 MB in the beginning and 772.3 MB in the end (delta: 50.9 MB). Peak memory consumption was 1.5 GB. Max. memory is 5.3 GB. [2018-07-22 15:44:31,138 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 306.7 MB. Free memory is still 271.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 4684.65 ms. Allocated memory was 306.7 MB in the beginning and 394.8 MB in the end (delta: 88.1 MB). Free memory was 224.7 MB in the beginning and 127.5 MB in the end (delta: 97.2 MB). Peak memory consumption was 218.7 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 1851.67 ms. Allocated memory was 394.8 MB in the beginning and 689.4 MB in the end (delta: 294.6 MB). Free memory was 127.5 MB in the beginning and 412.0 MB in the end (delta: -284.5 MB). Peak memory consumption was 112.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 975.83 ms. Allocated memory was 689.4 MB in the beginning and 869.8 MB in the end (delta: 180.4 MB). Free memory was 412.0 MB in the beginning and 580.2 MB in the end (delta: -168.2 MB). Peak memory consumption was 169.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 18752.56 ms. Allocated memory was 869.8 MB in the beginning and 1.2 GB in the end (delta: 351.8 MB). Free memory was 580.2 MB in the beginning and 823.3 MB in the end (delta: -243.0 MB). Peak memory consumption was 560.4 MB. Max. memory is 5.3 GB. * TraceAbstraction took 198747.07 ms. Allocated memory was 1.2 GB in the beginning and 2.7 GB in the end (delta: 1.5 GB). Free memory was 823.3 MB in the beginning and 772.3 MB in the end (delta: 50.9 MB). Peak memory consumption was 1.5 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 130). Cancelled while BasicCegarLoop was constructing difference of abstraction (227254states) and interpolant automaton (currently 4 states, 4 states before enhancement), while ReachableStatesComputation was computing reachable states (521937 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 198.6s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 169.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14423 SDtfs, 51269 SDslu, 3656 SDs, 0 SdLazy, 87912 SolverSat, 20258 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 141.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 858 GetRequests, 826 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=227254occurred 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: 13.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 89429 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 6332 NumberOfCodeBlocks, 6332 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 6321 ConstructedInterpolants, 0 QuantifiedInterpolants, 11002049 SizeOfPredicates, 5 NumberOfNonLiveVariables, 951 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 5331/5335 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem19_label37_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-22_15-44-31-151.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem19_label37_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-22_15-44-31-151.csv Completed graceful shutdown